10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
(Mark One)
Q	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2017
OR
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from ________________ to ______________
Commission File Number:  001-14273
CORE LABORATORIES N.V.
(Exact name of registrant as specified in its charter)
The Netherlands		Not Applicable
(State or other jurisdiction of		(I.R.S. Employer Identification No.)
incorporation or organization)
Strawinskylaan 913
Tower A, Level 9
1077 XX Amsterdam
The Netherlands		Not Applicable
(Address of principal executive offices)		(Zip Code)
(31-20) 420-3191
(Registrant's telephone number, including area code)
None
(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes Q  No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes Q  No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer Q	Accelerated filer  o	Non-accelerated filer  o	Smaller reporting company  o	Emerging growth company  o
		(Do not check if a smaller reporting company)

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨  No Q

The number of common shares of the registrant, par value EUR 0.02 per share, outstanding at July 25, 2017 was 44,138,104.

CORE LABORATORIES N.V.
FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2017
INDEX
PART I - FINANCIAL INFORMATION
		Page
Item 1.	Financial Statements
	Consolidated Balance Sheets (Unaudited) at June 30, 2017 and December 31, 2016	1
	Consolidated Statements of Operations (Unaudited) for the Three Months Ended June 30, 2017 and 2016	2
	Consolidated Statements of Operations (Unaudited) for the Six Months Ended June 30, 2017 and 2016	3
	Consolidated Statements of Comprehensive Income (Unaudited) for the Three and Six Months Ended June 30, 2017 and 2016	4
	Consolidated Statements of Cash Flows (Unaudited) for the Six Months Ended June 30, 2017 and 2016	5
	Notes to the Unaudited Consolidated Interim Financial Statements	6
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	24
Item 4.	Controls and Procedures	24
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	26
Item 1A.	Risk Factors	26
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	26
Item 6.	Exhibits	27
	Signature	28

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements

CORE LABORATORIES N.V.

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

	June 30, 2017			December 31, 2016
ASSETS	(Unaudited)
CURRENT ASSETS:
Cash and cash equivalents	$	14,318		$	14,764
Accounts receivable, net of allowance for doubtful accounts of $2,905 and $3,139 at 2017 and 2016, respectively	128,983			114,329
Inventories	35,598			33,720
Prepaid expenses	11,353			10,711
Income taxes receivable	9,067			6,426
Other current assets	6,903			6,511
TOTAL CURRENT ASSETS	206,222			186,461
PROPERTY, PLANT AND EQUIPMENT, net	125,746			129,882
INTANGIBLES, net	9,705			9,936
GOODWILL	179,044			179,044
DEFERRED TAX ASSETS, net	13,748			20,605
OTHER ASSETS	49,293			47,124
TOTAL ASSETS	$	583,758		$	573,052
LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Accounts payable	$	41,607		$	33,720
Accrued payroll and related costs	22,817			19,411
Taxes other than payroll and income	7,318			5,816
Unearned revenue	17,046			15,690
Income taxes payable	943			15,718
Other current liabilities	11,075			13,668
TOTAL CURRENT LIABILITIES	100,806			104,023
LONG-TERM DEBT, net	233,739			216,488
DEFERRED COMPENSATION	49,308			46,251
DEFERRED TAX LIABILITIES, net	6,146			6,277
OTHER LONG-TERM LIABILITIES	42,307			44,716
COMMITMENTS AND CONTINGENCIES (Note 6)
EQUITY:
Preference shares, EUR 0.02 par value; 6,000,000 shares authorized, none issued or outstanding	—			—
Common shares, EUR 0.02 par value; 200,000,000 shares authorized, 44,796,252 issued and 44,128,235 outstanding at 2017 and 44,796,252 issued and 44,151,261 outstanding at 2016	1,148			1,148
Additional paid-in capital	59,043			52,850
Retained earnings	179,631			187,957
Accumulated other comprehensive income (loss)	(9,621		)	(9,828		)
Treasury shares (at cost), 668,017 at 2017 and 644,991 at 2016	(82,708		)	(80,773		)
Total Core Laboratories N.V. shareholders' equity	147,493			151,354
Non-controlling interest	3,959			3,943
TOTAL EQUITY	151,452			155,297
TOTAL LIABILITIES AND EQUITY	$	583,758		$	573,052

The accompanying notes are an integral part of these consolidated financial statements.

1

CORE LABORATORIES N.V.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

	Three Months Ended
	June 30,
	2017			2016
	(Unaudited)
REVENUE:
Services	$	117,239		$	118,172
Product sales	46,664			29,897
Total revenue	163,903			148,069
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below	80,431			83,349
Cost of product sales, exclusive of depreciation expense shown below	36,687			26,650
General and administrative expense, exclusive of depreciation expense shown below	11,100			11,139
Depreciation	6,093			6,531
Amortization	209			220
Other (income) expense, net	(24		)	(47		)
OPERATING INCOME	29,407			20,227
Interest expense	2,692			3,021
Income before income tax expense	26,715			17,206
Income tax expense	4,006			671
Net income	22,709			16,535
Net income (loss) attributable to non-controlling interest	19			(89		)
Net income attributable to Core Laboratories N.V.	$	22,690		$	16,624
EARNINGS PER SHARE INFORMATION:
Basic earnings per share attributable to Core Laboratories N.V.	$	0.51		$	0.38
Diluted earnings per share attributable to Core Laboratories N.V.	$	0.51		$	0.38
Cash dividends per share	$	0.55		$	0.55
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic	44,164			43,297
Diluted	44,374			43,505

The accompanying notes are an integral part of these consolidated financial statements.

2

CORE LABORATORIES N.V.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

	Six Months Ended
	June 30,
	2017		2016
	(Unaudited)
REVENUE:
Services	$	238,175	$	240,942
Product sales	83,535		60,774
Total revenue	321,710		301,716
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below	164,032		168,643
Cost of product sales, exclusive of depreciation expense shown below	67,658		54,170
General and administrative expense, exclusive of depreciation expense shown below	23,856		22,189
Depreciation	12,295		13,158
Amortization	434		440
Other (income) expense, net	849		(51		)
OPERATING INCOME	52,586		43,167
Interest expense	5,310		6,455
Income before income tax expense	47,276		36,712
Income tax expense	6,885		5,060
Net income	40,391		31,652
Net income (loss) attributable to non-controlling interest	43		(54		)
Net income attributable to Core Laboratories N.V.	$	40,348	$	31,706
EARNINGS PER SHARE INFORMATION:
Basic earnings per share attributable to Core Laboratories N.V.	$	0.91	$	0.74
Diluted earnings per share attributable to Core Laboratories N.V.	$	0.91	$	0.74
Cash dividends per share	$	1.10	$	1.10
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic	44,162		42,839
Diluted	44,360		43,008

The accompanying notes are an integral part of these consolidated financial statements.

3

CORE LABORATORIES N.V.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
	(Unaudited)						(Unaudited)
Net income	$	22,709		$	16,535		$	40,391		$	31,652
Other comprehensive income:
Derivatives
Gain (loss) in fair value of interest rate swaps	(278		)	(800		)	(197		)	(2,420		)
Interest rate swap amounts reclassified to interest expense	140			211			307			424
Income taxes on derivatives	48			217			(39		)	735
Total derivatives	(90		)	(372		)	71			(1,261		)
Pension and other postretirement benefit plans
Prior service cost
Amortization to net income of prior service cost	(19		)	(19		)	(38		)	(38		)
Amortization to net income of actuarial loss	110			148			220			296
Income taxes on pension and other postretirement benefit plans	(22		)	(32		)	(46		)	(64		)
Total pension and other postretirement benefit plans	69			97			136			194
Total other comprehensive income (loss)	(21		)	(275		)	207			(1,067		)
Comprehensive income	22,688			16,260			40,598			30,585
Comprehensive income (loss) attributable to non-controlling interest	19			(89		)	43			(54		)
Comprehensive income attributable to Core Laboratories N.V.	$	22,669		$	16,349		$	40,555		$	30,639

The accompanying notes are an integral part of these consolidated financial statements.

4

CORE LABORATORIES N.V.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Six Months Ended
	June 30,
	2017			2016
	(Unaudited)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	40,391		$	31,652
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	11,563			11,087
Depreciation and amortization	12,729			13,598
Changes to value of life insurance policies	(48		)	(497		)
Deferred income taxes	6,766			(1,256		)
Other non-cash items	(561		)	(1,670		)
Changes in assets and liabilities:
Accounts receivable	(14,527		)	34,700
Inventories	(1,926		)	805
Prepaid expenses and other current assets	(3,675		)	(2,344		)
Other assets	(1,083		)	733
Accounts payable	8,443			(3,826		)
Accrued expenses	(12,459		)	(6,079		)
Unearned revenue	1,356			(2,987		)
Other long-term liabilities	1,507			(102		)
Net cash provided by operating activities	48,476			73,814
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(9,362		)	(5,302		)
Patents and other intangibles	(203		)	(99		)
Proceeds from sale of assets	511			539
Premiums on life insurance	(863		)	(970		)
Net cash used in investing activities	(9,917		)	(5,832		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(67,000		)	(258,676		)
Proceeds from debt borrowings	84,000			34,000
Excess tax benefits from stock-based compensation	—			(284		)
Non-controlling interest - dividend	(27		)	(211		)
Dividends paid	(48,590		)	(46,626		)
Repurchase of common shares	(7,388		)	(1,112		)
Issuance of common shares	—			197,211
Net cash used in financing activities	(39,005		)	(75,698		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(446		)	(7,716		)
CASH AND CASH EQUIVALENTS, beginning of period	14,764			22,494
CASH AND CASH EQUIVALENTS, end of period	$	14,318		$	14,778

The accompanying notes are an integral part of these consolidated financial statements.

5

CORE LABORATORIES N.V.

NOTES TO THE UNAUDITED CONSOLIDATED INTERIM FINANCIAL STATEMENTS

1.  BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements include the accounts of Core Laboratories N.V. and its subsidiaries for which we have a controlling voting interest and/or a controlling financial interest. These financial statements have been prepared in accordance with United States ("U.S.") generally accepted accounting principles ("GAAP") for interim financial information using the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all of the information and footnote disclosures required by U.S. GAAP and should be read in conjunction with the audited financial statements and the summary of significant accounting policies and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2016 (the "2016 Annual Report").

Core Laboratories N.V. uses the equity method of accounting for investments in which it has less than a majority interest and over which it does not exercise control but does exert significant influence. We use the cost method to record certain other investments in which we own less than 20% of the outstanding equity and do not exercise control or exert significant influence. Non-controlling interests have been recorded to reflect outside ownership attributable to consolidated subsidiaries that are less than 100% owned. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the interim periods presented have been included in these financial statements. Furthermore, the operating results presented for the three and six months ended June 30, 2017 may not necessarily be indicative of the results that may be expected for the year ending December 31, 2017.

Core Laboratories N.V.'s balance sheet information for the year ended December 31, 2016 was derived from the 2016 audited consolidated financial statements but does not include all disclosures in accordance with U.S. GAAP.

Core Lab's continuing efforts to streamline its business has led to a simplification of its reporting structure and as of January 1, 2017, the Company presents its operating results in two reporting segments: Reservoir Description and Production Enhancement. For more detail about our segments, see Note 13 - Segment Reporting.

Certain reclassifications were made to prior period amounts in order to conform to the current period presentation. These reclassifications had no impact on the reported net income or cash flows for the three or six months ended June 30, 2016.

References to "Core Lab", the "Company", "we", "our" and similar phrases are used throughout this Quarterly Report on Form 10-Q and relate collectively to Core Laboratories N.V. and its consolidated subsidiaries.

2.  INVENTORIES

Inventories consisted of the following (in thousands):

	June 30, 2017		December 31, 2016
Finished goods	$	22,506	$	21,635
Parts and materials	11,762		11,185
Work in progress	1,330		900
Total inventories	$	35,598	$	33,720

We include freight costs incurred for shipping inventory to our clients in the Cost of product sales caption in the accompanying Consolidated Statements of Operations.

3.  ACQUISITIONS

We had no significant acquisitions during the six months endedJune 30, 2017.

6

4.  DEBT, NET

We have no capital lease obligations. Debt is as follows (in thousands):

	June 30, 2017			December 31, 2016
Senior notes	$	150,000		$	150,000
Credit facility	85,000			68,000
Total debt	235,000			218,000
Less: Debt issuance costs	(1,261		)	(1,512		)
Long-term debt, net	$	233,739		$	216,488

We have two series of senior notes outstanding with an aggregate principal amount of $150 million ("Senior Notes") issued in a private placement transaction. Series A consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.01% and are due in full on September 30, 2021. Series B consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.11% and are due in full on September 30, 2023. Interest on each series of the Senior Notes is payable semi-annually on March 30 and September 30.

We maintain a revolving credit facility ("Credit Facility") that allows for an aggregate borrowing capacity of $400 million. The Credit Facility also provides an option to increase the commitment under the Credit Facility by an additional $50 million to bring the total borrowings available to $450 million if certain prescribed conditions are met by the Company. The Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00%. Any outstanding balance under the Credit Facility is due August 29, 2019, when the Credit Facility matures. Our available capacity at any point in time is reduced by borrowings outstanding at the time and outstanding letters of credit which totaled $21.7 million at June 30, 2017, resulting in an available borrowing capacity under the Credit Facility of $293.3 million. In addition to those items under the Credit Facility, we had $13.4 million of outstanding letters of credit and performance guarantees and bonds from other sources as of June 30, 2017.

The terms of the Credit Facility and Senior Notes require us to meet certain covenants, including, but not limited to, an interest coverage ratio (consolidated EBITDA divided by interest expense) and a leverage ratio (consolidated net indebtedness divided by consolidated EBITDA), where consolidated EBITDA (as defined in each agreement) and interest expense are calculated using the most recent four fiscal quarters. The Credit Facility has the more restrictive covenants with a minimum interest coverage ratio of 3.0 to 1.0 and a maximum leverage ratio of 2.5 to 1.0. We believe that we are in compliance with all such covenants contained in our credit agreements. Certain of our material, wholly-owned subsidiaries are guarantors or co-borrowers under the Credit Facility and Senior Notes.

In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million. See Note 11 - Derivative Instruments and Hedging Activities.

The estimated fair value of total debt at June 30, 2017 and December 31, 2016 approximated the book value of total debt. The fair value was estimated using Level 2 inputs by calculating the sum of the discounted future interest and principal payments through the date of maturity.

5.  PENSION

Defined Benefit Plan

We provide a noncontributory defined benefit pension plan covering substantially all of our Dutch employees ("Dutch Plan") who were hired prior to 2007. The pension benefit is based on years of service and final pay or career average pay, depending on when the employee began participating. The benefits earned by the employees are immediately vested.

7

The following table summarizes the components of net periodic pension cost under the Dutch Plan (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Service cost	$	366		$	375		$	741		$	733
Interest cost	268			342			543			669
Expected return on plan assets	(228		)	(287		)	(460		)	(562		)
Amortization of prior service cost	(19		)	(19		)	(38		)	(38		)
Amortization of actuarial loss	110			148			220			296
Net periodic pension cost	$	497		$	559		$	1,006		$	1,098

During the six months ended June 30, 2017, we contributed $1.6 million to fund the estimated 2017 premiums on investment contracts held by the Dutch Plan.

6. COMMITMENTS AND CONTINGENCIES

We have been and may from time to time be named as a defendant in legal actions that arise in the ordinary course of business. These include, but are not limited to, employment-related claims and contractual disputes or claims for personal injury or property damage which occur in connection with the provision of our services and products. Management does not currently believe that any of our pending contractual, employment-related, personal injury or property damage claims and disputes will have a material effect on our future results of operations, financial position or cash flow.

7.  EQUITY

During the three months ended June 30, 2017, we repurchased 58,676 of our common shares for $6.1 million; included in this total were rights to 3,676 shares valued at $0.4 million surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. During the six months ended June 30, 2017, we repurchased 69,428 of our common shares for $7.4 million; included in this total were rights to 14,428 shares valued at $1.7 million surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. Such common shares, unless canceled, may be reissued for a variety of purposes such as future acquisitions, non-employee director stock awards or employee stock awards. We distributed 11,180 and 46,402 treasury shares upon vesting of stock-based awards during the three and six months ended June 30, 2017, respectively.

In February and May 2017, we paid quarterly dividends of $0.55 per share of common stock. In addition, on July 6, 2017, we declared a quarterly dividend of $0.55 per share of common stock for shareholders of record on July 17, 2017 and payable on August 14, 2017.

8

The following table summarizes our changes in equity for the six months ended June 30, 2017 (in thousands):

	Common Shares		Additional Paid-In Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Non-Controlling Interest			Total Equity
December 31, 2016	$	1,148	$	52,850	$	187,957		$	(9,828	)	$	(80,773	)	$	3,943		$	155,297
Adoption of ASU 2016-09 (see note 14)	—		84		(84		)	—			—			—			—
Stock based-awards	—		6,109		—			—			5,453			—			11,562
Repurchase of common shares	—		—		—			—			(7,388		)	—			(7,388		)
Dividends paid	—		—		(48,590		)	—			—			—			(48,590		)
Non-controlling interest dividends	—		—		—			—			—			(27		)	(27		)
Amortization of deferred pension costs, net of tax	—		—		—			136			—			—			136
Interest rate swaps, net of tax	—		—		—			71			—			—			71
Net income	—		—		40,348			—			—			43			40,391
June 30, 2017	$	1,148	$	59,043	$	179,631		$	(9,621	)	$	(82,708	)	$	3,959		$	151,452

Accumulated other comprehensive income (loss) consisted of the following (in thousands):

	June 30, 2017			December 31, 2016
Prior service cost	572			600
Unrecognized net actuarial loss	(9,605		)	(9,769		)
Fair value of derivatives, net of tax	(588		)	(659		)
Total accumulated other comprehensive income (loss)	$	(9,621	)	$	(9,828	)

8.  EARNINGS PER SHARE

We compute basic earnings per common share by dividing net income attributable to Core Laboratories N.V. by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common shares include additional shares in the weighted average share calculations associated with the incremental effect of dilutive restricted stock awards and contingently issuable shares, as determined using the treasury stock method. The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2017	2016	2017	2016
Weighted average basic common shares outstanding	44,164	43,297	44,162	42,839
Effect of dilutive securities:
Performance shares	148	127	143	105
Restricted stock	62	81	55	64
Weighted average diluted common and potential common shares outstanding	44,374	43,505	44,360	43,008

9

9. OTHER (INCOME) EXPENSE, NET

The components of Other (income) expense, net, were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Sale of assets	$	(123	)	$	(122	)	$	(302	)	$	(488	)
Results of non-consolidated subsidiaries	(96		)	(136		)	(175		)	(324		)
Foreign exchange	358			433			455			1,212
Rents and royalties	(109		)	(98		)	(231		)	(199		)
Severance, compensation and other charges	—			—			1,145			—
Other, net	(54		)	(124		)	(43		)	(252		)
Total other (income) expense, net	$	(24	)	$	(47	)	$	849		$	(51	)

Foreign exchange gains and losses are summarized in the following table (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Gains) losses by currency	2017			2016			2017			2016
Angolan Kwanza	$	(4	)	$	43		$	(3	)	$	505
British Pound	(74		)	247			(55		)	475
Euro	732			(40		)	835			170
Mexican Peso	11			114			(28		)	136
Russian Ruble	(141		)	(57		)	(125		)	(93		)
Other currencies, net	(166		)	126			(169		)	19
Total (gain) loss, net	$	358		$	433		$	455		$	1,212

10.  INCOME TAX EXPENSE

The effective tax rates for the three months ended June 30, 2017 and 2016 were 15.0% and 3.9%, respectively. The effective tax rates for the six months ended June 30, 2017 and 2016 were 14.6% and 13.8%, respectively. Income tax expense of $4.0 million in the second quarter of 2017increased by $3.3 million compared to $0.7 million in the same period in 2016, due to the result of several items discrete to each quarter, along with changes in activity levels in jurisdictions with differing tax rates. In addition, during the second quarter of 2016, we settled a tax audit covering the years 2010 through 2012 that resulted in the release of reserves for uncertain tax positions in the amount of $0.9 million which contributed to the lower effective tax rate in that quarter.

On March 29, 2017, the Prime Minister of the United Kingdom ("UK") formally notified the European Council of the UK's intention to withdraw from the European Union ("EU") under Article 50 of the Treaty of Lisbon. The UK's formal withdrawal may impact tax exemptions and reliefs on intra-European transactions between our UK affiliates and EU companies. In addition, it may impact transactions between our UK affiliates and non-EU based companies as EU tax treaties may no longer apply to these transactions.

Due to the uncertainty involved in evaluating the effect of the loss of tax exemptions and reliefs, we are unable to estimate the impact of these changes, if any, at this time. We will continue to monitor developments in this area.

10

11.  DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

We are exposed to market risks related to fluctuations in interest rates. To mitigate these risks, we utilize derivative instruments in the form of interest rate swaps. We do not enter into derivative transactions for speculative purposes.

Interest Rate Risk

Our Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00%. As a result of two interest rate swap agreements, we are subject to interest rate risk on debt in excess of $50 million drawn on our Credit Facility.

In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million to hedge changes in the variable rate interest expense on $50 million of our existing or replacement LIBOR-priced debt. Under the first swap agreement of $25 million, we have fixed the LIBOR portion of the interest rate at 1.73% through August 29, 2019, and under the second swap agreement of $25 million, we have fixed the LIBOR portion of the interest rate at 2.5% through August 29, 2024. Each swap is measured at fair value and recorded in our Consolidated Balance Sheet as a liability. They are designated and qualify as cash flow hedging instruments and are highly effective. Unrealized losses are deferred to shareholders' equity as a component of accumulated other comprehensive loss and are recognized in income as an increase to interest expense in the period in which the related cash flows being hedged are recognized in expense.

At June 30, 2017, we had fixed rate long-term debt aggregating $200 million and variable rate long-term debt aggregating $35 million, after taking into account the effect of the swaps.

The fair values of outstanding derivative instruments are as follows:

	Fair Value of Derivatives
	June 30, 2017		December 31, 2016		Balance Sheet Classification
Derivatives designated as hedges:
5 year interest rate swap	$	103	$	211	Other long-term liabilities
10 year interest rate swap	833		835		Other long-term liabilities
	$	936	$	1,046

The fair value of all outstanding derivatives was determined using a model with inputs that are observable in the market (Level 2) or can be derived from or corroborated by observable data.

The effect of the interest rate swaps on the Consolidated Statement of Operations was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016		Income Statement Classification
Derivatives designated as hedges:
5 year interest rate swap	$	46	$	81	$	105	$	163	Increase to interest expense
10 year interest rate swap	94		130		202		261		Increase to interest expense
	$	140	$	211	$	307	$	424

11

12.  FINANCIAL INSTRUMENTS

The Company's only financial assets and liabilities which are measured at fair value on a recurring basis relate to certain aspects of the Company's benefit plans and our derivative instruments. We use the market approach to value certain assets and liabilities at fair value using significant other observable inputs (Level 2) with the assistance of a third-party specialist. We do not have any assets or liabilities measured at fair value on a recurring basis using quoted prices in an active market (Level 1) or significant unobservable inputs (Level 3). Gains and losses related to the fair value changes in the deferred compensation assets and liabilities are recorded in General and administrative expense in the Consolidated Statements of Operations. Gains and losses related to the fair value of the interest rate swaps are recorded in Other comprehensive income. The following table summarizes the fair value balances (in thousands):

			Fair Value Measurement at
			June 30, 2017
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	26,788	$	—	$	26,788	$	—
Liabilities:
Deferred compensation plan	$	33,963	$	—	$	33,963	$	—
5 year interest rate swap	103		—		103		—
10 year interest rate swap	833		—		833		—
	$	34,899	$	—	$	34,899	$	—

			Fair Value Measurement at
			December 31, 2016
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	25,530	$	—	$	25,530	$	—
Liabilities:
Deferred compensation plan	$	31,672	$	—	$	31,672	$	—
5 year interest rate swap	211		—		211		—
10 year interest rate swap	835		—		835		—
	$	32,718	$	—	$	32,718	$	—
(1) Trust assets consist of the cash surrender value of life insurance policies and are intended to assist in the funding of the deferred compensation agreements.

13.  SEGMENT REPORTING

Core Laboratories has taken steps to streamline its business by realigning its reporting structure into two reporting segments. These complementary segments provide different services and products and utilize different technologies for improving reservoir performance and increasing oil and gas recovery from new and existing fields. In connection with the realignment of our reporting structure, amounts previously reported in our Reservoir Management segment are now presented within our Reservoir Description and Production Enhancement segments, and prior periods have been revised to conform to the current presentation.

• Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples to increase production and improve recovery of oil and gas from our clients' reservoirs. We provide laboratory based analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry. We also provide proprietary and joint industry studies based on these types of analysis.

• Production Enhancement: Includes services and products relating to reservoir well completions, perforations, stimulations and production. We provide integrated diagnostic services to evaluate and monitor the effectiveness of well completions and to develop solutions aimed at increasing the effectiveness of enhanced oil recovery projects.

12

Results for these segments are presented below. We use the same accounting policies to prepare our segment results as are used to prepare our Consolidated Financial Statements. All interest and other non-operating income (expense) is attributable to Corporate & Other and is not allocated to specific segments. Summarized financial information concerning our segments is shown in the following table (in thousands):

	Reservoir Description		Production Enhancement		Corporate & Other 1			Consolidated
Three Months Ended June 30, 2017
Revenue from unaffiliated clients	$	104,313	$	59,590	$	—		$	163,903
Inter-segment revenue	47		249		(296		)	—
Segment operating income (loss)	18,670		10,765		(28		)	29,407
Total assets (at end of period)	319,433		206,096		58,229			583,758
Capital expenditures	2,098		769		46			2,913
Depreciation and amortization	4,528		1,256		518			6,302
Three Months Ended June 30, 2016
Revenue from unaffiliated clients	$	108,278	$	39,791	$	—		$	148,069
Inter-segment revenue	304		384		(688		)	—
Segment operating income (loss)	20,139		247		(159		)	20,227
Total assets (at end of period)	323,623		196,339		52,144			572,106
Capital expenditures	2,274		160		10			2,444
Depreciation and amortization	4,631		1,501		619			6,751
Six Months Ended June 30, 2017
Revenue from unaffiliated clients	$	209,208	$	112,502	$	—		$	321,710
Inter-segment revenue	221		450		(671		)	—
Segment operating income (loss)	34,610		18,160		(184		)	52,586
Total assets	319,433		206,096		58,229			583,758
Capital expenditures	4,675		3,789		898			9,362
Depreciation and amortization	9,148		2,542		1,039			12,729
Six Months Ended June 30, 2016
Revenue from unaffiliated clients	$	215,702	$	86,014	$	—		$	301,716
Inter-segment revenue	1,046		604		(1,650		)	—
Segment operating income (loss)	38,737		4,497		(67		)	43,167
Total assets	323,623		196,339		52,144			572,106
Capital expenditures	4,356		538		408			5,302
Depreciation and amortization	9,267		3,089		1,242			13,598

(1) "Corporate & Other" represents those items that are not directly related to a particular segment and eliminations.

14.  RECENT ACCOUNTING PRONOUNCEMENTS

Pronouncements Adopted in 2017

In July 2015, the FASB issued ASU 2015-11 ("Simplifying the Measurement of Inventory") to require the measurement of inventory at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. We adopted this standard on January 1, 2017. The adoption of this standard had no effect on our Consolidated Balance Sheets, Consolidated Statements of Operations and Consolidated Statements of Cash Flows.

In March 2016, the FASB issued ASU 2016-09 ("Improvements to Employee Share-Based Payment Accounting") to simplify the accounting for share-based payment transactions, including accounting for forfeitures, excess tax benefit/expense, and tax withholding requirements. Under this new guidance, (1) companies have the option to estimate how many shares in a grant will be forfeited or to elect to recognize forfeitures as they occur; (2) all excess tax benefit and expense is recognized as income tax benefit or expense in the income statement as a discrete item to the quarter, and the accumulated benefits in additional paid-in

13

capital ("APIC") are eliminated; and (3) companies are able to withhold share amounts up to the statutory maximum and the award will still be classified as equity. We adopted this standard on January 1, 2017 and have elected to recognize forfeitures as they occur. This resulted in a reclassification between retained earnings and additional paid-in-capital of $84 thousand for the estimated forfeitures on unvested shares as of January 1, 2017. The adoption of this standard will result in periodic adjustments in the recognition of stock compensation expense associated with forfeitures in the period in which they occur. In addition to the income statement treatment of including the excess tax benefit/expense as a discrete income tax item each quarter, this has been removed from the Cash from financing activities section of the Statement of Cash Flows.

Pronouncements Not Yet Effective

In May 2014, the FASB issued ASU 2014-09 ("Revenue from Contracts with Customers"), which provides guidance on revenue recognition. The core principle of this guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance requires entities to apply a five-step method to (1) identify the contract(s) with customers; (2) identify the performance obligation(s) in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligation(s) in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017 (on July 9, 2015, the FASB deferred the implementation date for one year). We are currently analyzing the standard's impact on our revenues by looking at all of our revenue streams to determine the impact on our Consolidated Balance Sheets, Consolidated Statements of Operations and Consolidated Statements of Cash Flows. At this point, we do not anticipate any material changes to our revenue recognition policies and procedures nor to our financial statements, but extensive additional disclosures will be required.

In February 2016, the FASB issued ASU 2016-02 ("Leases"), which introduces the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The new standard establishes a right-of-use ("ROU") model that requires a lessee to record an ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. The new standard is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years with early adoption permitted. We do not anticipate the adoption of this standard to have a material impact on how we currently record lease transactions; however, it may have a significant impact on our Consolidated Balance Sheets, increasing both asset balances and liability balances.

In June 2016, the FASB issued ASU 2016-13 ("Measurement of Credit Losses on Financial Instruments") which replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The new standard is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years with early adoption permitted in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are evaluating the impact that the adoption of this standard will have on our consolidated financial statements.

14

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion summarizes the financial position of Core Laboratories N.V. and its subsidiaries as of June 30, 2017 and should be read in conjunction with (i) the unaudited consolidated interim financial statements and notes thereto included elsewhere in this Quarterly Report on Form 10-Q ("Quarterly Report") and (ii) the audited consolidated financial statements and accompanying notes to our Annual Report on Form 10-K for the fiscal year ended December 31, 2016 (the "2016 Annual Report").

General

Core Laboratories N.V. is a limited liability company incorporated and domiciled in the Netherlands. It was established in 1936 and is one of the world's leading providers of proprietary and patented reservoir description and production enhancement services and products to the oil and gas industry. These services and products can enable our clients to improve reservoir performance and increase oil and gas recovery from their producing fields. Core Laboratories N.V. has over 70 offices in more than 50 countries and employs approximately 4,400 people worldwide.

References to "Core Lab", the "Company", "we", "our" and similar phrases are used throughout this Quarterly Report and relate collectively to Core Laboratories N.V. and its consolidated affiliates.

Core Lab's continuing efforts to streamline its business has led to a simplification of its reporting structure and as of January 1, 2017, the Company presents its operating results in two reporting segments: Reservoir Description and Production Enhancement. These complementary segments provide different services and products and utilize different technologies for improving reservoir performance and increasing oil and gas recovery from new and existing fields.

• Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples to increase production and improve recovery of oil and gas from our clients' reservoirs. We provide laboratory based analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry. We also provide proprietary and joint industry studies based on these types of analysis.

• Production Enhancement: Includes services and products relating to reservoir well completions, perforations, stimulations and production. We provide integrated diagnostic services to evaluate and monitor the effectiveness of well completions and to develop solutions aimed at increasing the effectiveness of enhanced oil recovery projects.

Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Certain statements contained in this Management's Discussion and Analysis of Financial Condition and Results of Operations section, including those under the headings "Outlook" and "Liquidity and Capital Resources", and in other parts of this Quarterly Report, are forward-looking. In addition, from time to time, we may publish forward-looking statements relating to such matters as anticipated financial performance, business prospects, technological developments, new products, research and development activities and similar matters. Forward-looking statements can be identified by the use of forward-looking terminology such as "may", "will", "believe", "expect", "anticipate", "estimate", "continue", or other similar words, including statements as to the intent, belief, or current expectations of our directors, officers, and management with respect to our future operations, performance, or positions or which contain other forward-looking information. These forward-looking statements are based on our current expectations and beliefs concerning future developments and their potential effect on us. While management believes that these forward-looking statements are reasonable as and when made, no assurances can be given that the future results indicated, whether expressed or implied, will be achieved. While we believe that these statements are and will be accurate, our actual results and experience may differ materially from the anticipated results or other expectations expressed in our statements due to a variety of risks and uncertainties.

We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. For a more detailed discussion of some of the foregoing risks and uncertainties, see "Item 1A - Risk Factors" in our 2016 Annual Report and in Part II of this Quarterly Report, as well as the other reports filed by us with the Securities and Exchange Commission (“SEC”).

15

Outlook

As part of our long-term growth strategy, we continue our long-term efforts to expand our market presence by opening or expanding facilities in strategic areas and realizing synergies within our business lines subject to client demand and market conditions. We believe our market presence provides us a unique opportunity to service clients who have global operations whether they are international oil companies, national oil companies, or independent oil companies.

The volatility and significant reduction in the average price of crude oil during 2015 and 2016 resulted in a significant decrease in the activities associated with both the exploration and production of oil during 2015 and throughout most of 2016. Although the average price of oil and gas decreased in 2016, prices showed some signs of improvement in the second half of the year and remained more stable during the first half of 2017.

In the U.S., the land-based rig count decreased 39% during the first half of 2016, which greatly impacted both services and product sales to this market. The third quarter of 2016 marked the beginning of a recovery in onshore U.S. drilling activity that continued through the first half of 2017. According to Baker Hughes, the U.S. land-based rig count increased 15% during the second quarter of 2017 and 44% during the first half of 2017. We believe this increase is in response to the improved pricing of crude oil in the first quarter, where the average oil price increased almost 10%, although prices have been more volatile in the second quarter while trending down as the quarter progressed. We believe that further increases in the U.S. land-based rig count will begin to slow in the second half of 2017 and may flatten by the end of the year.

International and offshore activities associated with the exploration for and production of oil and natural gas also decreased during 2016, although not as significantly as the U.S. land-based activities. Our clients' activities relating to capital projects in the international and deepwater markets remained depressed throughout 2016 as well as the first half of 2017. Although several final investment decisions ("FID") have been recently announced by oil and gas companies, activities relating to those fields are not expected to materially increase in 2017 as the operators are currently developing their project plans and should begin to implement them in 2018.

16

Results of Operations

Our results of operations as a percentage of applicable revenue were as follows (in thousands):

	Three Months Ended June 30,										Change
	2017					2016					$			%
REVENUE:
Services	$	117,239		72	%	$	118,172		80	%	$	(933	)	(1	)%
Product sales	46,664			28	%	29,897			20	%	16,767			56	%
Total revenue	163,903			100	%	148,069			100	%	15,834			11	%
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below*	80,431			69	%	83,349			71	%	(2,918		)	(4	)%
Cost of product sales, exclusive of depreciation expense shown below*	36,687			79	%	26,650			89	%	10,037			38	%
Total cost of services and product sales	117,118			71	%	109,999			74	%	7,119			6	%
General and administrative expense	11,100			7	%	11,139			8	%	(39		)	—	%
Depreciation and amortization	6,302			4	%	6,751			5	%	(449		)	(7	)%
Other (income) expense, net	(24		)	—	%	(47		)	—	%	23			NM
Operating income	29,407			18	%	20,227			14	%	9,180			45	%
Interest expense	2,692			2	%	3,021			2	%	(329		)	(11	)%
Income before income tax expense	26,715			16	%	17,206			12	%	9,509			55	%
Income tax expense	4,006			2	%	671			1	%	3,335			497	%
Net income	22,709			14	%	16,535			11	%	6,174			37	%
Net income (loss) attributable to non-controlling interest	19			—	%	(89		)	—	%	108			NM
Net income attributable to Core Laboratories N.V.	$	22,690		14	%	$	16,624		11	%	$	6,066		36	%
"NM"  means not meaningful
* Percentage based on applicable revenue rather than total revenue.

17

	Three Months Ended									Change
	Jun 30, 2017					Mar 31, 2017				$			%
REVENUE:
Services	$	117,239		72	%	$	120,936	77	%	$	(3,697	)	(3	)%
Product sales	46,664			28	%	36,871		23	%	9,793			27	%
Total revenue	163,903			100	%	157,807		100	%	6,096			4	%
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below*	80,431			69	%	83,601		69	%	(3,170		)	(4	)%
Cost of product sales, exclusive of depreciation expense shown below*	36,687			79	%	30,971		84	%	5,716			18	%
Total cost of services and product sales	117,118			71	%	114,572		73	%	2,546			2	%
General and administrative expense	11,100			7	%	12,756		8	%	(1,656		)	(13	)%
Depreciation and amortization	6,302			4	%	6,427		4	%	(125		)	(2	)%
Other (income) expense, net	(24		)	—	%	873		1	%	(897		)	NM
Operating income	29,407			18	%	23,179		15	%	6,228			27	%
Interest expense	2,692			2	%	2,618		2	%	74			3	%
Income before income tax expense	26,715			16	%	20,561		13	%	6,154			30	%
Income tax expense	4,006			2	%	2,879		2	%	1,127			39	%
Net income	22,709			14	%	17,682		11	%	5,027			28	%
Net income (loss) attributable to non-controlling interest	19			—	%	24		—	%	(5		)	NM
Net income attributable to Core Laboratories N.V.	$	22,690		14	%	$	17,658	11	%	$	5,032		28	%
"NM"  means not meaningful
* Percentage based on applicable revenue rather than total revenue.

18

	Six Months Ended June 30,									Change
	2017				2016					$			%
REVENUE:
Services	$	238,175	74	%	$	240,942		80	%	$	(2,767	)	(1	)%
Product sales	83,535		26	%	60,774			20	%	22,761			37	%
Total revenue	321,710		100	%	301,716			100	%	19,994			7	%
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below*	164,032		69	%	168,643			70	%	(4,611		)	(3	)%
Cost of product sales, exclusive of depreciation expense shown below*	67,658		81	%	54,170			89	%	13,488			25	%
Total cost of services and product sales	231,690		72	%	222,813			74	%	8,877			4	%
General and administrative expense	23,856		7	%	22,189			7	%	1,667			8	%
Depreciation and amortization	12,729		4	%	13,598			4	%	(869		)	(6	)%
Other (income), net	849		—	%	(51		)	—	%	900			NM
Operating income	52,586		16	%	43,167			14	%	9,419			22	%
Interest expense	5,310		2	%	6,455			2	%	(1,145		)	(18	)%
Income before income tax expense	47,276		15	%	36,712			12	%	10,564			29	%
Income tax expense	6,885		2	%	5,060			2	%	1,825			36	%
Net income	40,391		13	%	31,652			10	%	8,739			28	%
Net income (loss) attributable to non-controlling interest	43		—	%	(54		)	—	%	97			NM
Net income attributable to Core Laboratories N.V.	$	40,348	13	%	$	31,706		11	%	$	8,642		27	%
"NM"  means not meaningful
* Percentage based on applicable revenue rather than total revenue.

Operating Results for the Three Months EndedJune 30, 2017 Compared to the Three Months EndedMarch 31, 2017 and June 30, 2016 and for the Six Months Ended June 30, 2017 Compared to the Six Months EndedJune 30, 2016

Services Revenue

Services revenue decreased 3% to $117.2 million for the second quarter of 2017 from $120.9 million for the first quarter of 2017 and decreased 1% from $118.2 million in the second quarter of 2016. The sequential decrease was driven by the decrease in international activity and lower oil prices. For the six months endedJune 30, 2017, services revenue decreased 1% to $238.2 million as compared to $240.9 million for the same period of 2016. We continue to focus on large-scale core analyses and reservoir fluids characterization studies in the U.S. Permian basin, offshore West and East Africa, offshore South America, and the Middle East, including Kuwait and the United Arab Emirates. Additionally, we have client interest in our existing multi-client reservoir studies such as the Tight Oil Reservoirs of the Midland Basin study and the Deepwater Gulf of Mexico ("GOM") Phase II as well as several major enhanced oil recovery ("EOR") projects for unconventional reservoirs underway in various stages in the laboratory.

Product Sales Revenue

Revenue associated with product sales increased 27% to $46.7 million for the second quarter of 2017 from $36.9 million for the first quarter of 2017 and increased 56% from $29.9 million in the second quarter of 2016. Our product sales revenue is primarily driven by completions of wells in the North American market and, more specifically, the activity associated with the completion of each stage in a wellbore. We continue to benefit from increasing completion activity in the U.S. as revenue from U.S. land-based completions increased 111% on a year-over-year quarterly basis. This outpaced the 47% increase in U.S. well completions for the same periods, indicating increased market penetration of our newly introduced HERO^® PerFRAC technology. For the six months endedJune 30, 2017, product sales revenue increased 37% to $83.5 million as compared to $60.8 million for the same period of 2016.

19

Cost of Services, excluding depreciation

Cost of services expressed as a percentage of services revenue was 69% for the three months endedJune 30, 2017, compared to 69% and 71% for the three months ended March 31, 2017 and June 30, 2016, respectively. Cost of services as a percentage of services revenue remained consistent at 69% and 70% for the six months endedJune 30, 2017 and June 30, 2016, respectively.

Cost of Product Sales, excluding depreciation

Cost of product sales expressed as a percentage of product sales revenue improved to 79% for the three months endedJune 30, 2017, compared to 84% and 89% for the three months ended March 31, 2017 and June 30, 2016, respectively. Cost of product sales expressed as a percentage of product sales revenue improved to 81% for the six months endedJune 30, 2017, compared to 89% for the same period in 2016. The decrease in cost of product sales as a percentage of revenue was primarily due to the improved absorption of our fixed costs as a result of increased revenue and activity.

General and Administrative Expense

General and administrative ("G&A") expense includes corporate management and centralized administrative services that benefit our operations. G&A expense for the three months endedJune 30, 2017 was $11.1 million compared to $12.8 million and $11.1 million for the three months ended March 31, 2017 and June 30, 2016, respectively. The sequential decrease was primarily due to lower compensation costs in the second quarter of 2017. General and administrative expense for the six months endedJune 30, 2017 was $23.9 million compared to $22.2 million for the same period in 2016, primarily due to lower compensation costs in 2016.

Depreciation and Amortization Expense

Depreciation and amortization expense for the three months ended June 30, 2017 was $6.3 million compared to $6.4 million and $6.8 million for the three months endedMarch 31, 2017 and June 30, 2016, respectively. Depreciation and amortization expense for the six months endedJune 30, 2017 was $12.7 million compared to $13.6 million for the same period in 2016.

Other (Income) Expense, Net

The components of other (income) expense, net, were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Sale of assets	$	(123	)	$	(122	)	$	(302	)	$	(488	)
Results of non-consolidated subsidiaries	(96		)	(136		)	(175		)	(324		)
Foreign exchange	358			433			455			1,212
Rents and royalties	(109		)	(98		)	(231		)	(199		)
Severance, compensation and other charges	—			—			1,145			—
Other, net	(54		)	(124		)	(43		)	(252		)
Total other (income) expense, net	$	(24	)	$	(47	)	$	849		$	(51	)

20

Foreign exchange (gain) loss, net by currency is summarized in the following table (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Angolan Kwanza	$	(4	)	$	43		$	(3	)	$	505
British Pound	(74		)	247			(55		)	475
Euro	732			(40		)	835			170
Mexican Peso	11			114			(28		)	136
Russian Ruble	(141		)	(57		)	(125		)	(93		)
Other currencies, net	(166		)	126			(169		)	19
Total (gain) loss, net	$	358		$	433		$	455		$	1,212

Interest Expense

Interest expense for the three months endedJune 30, 2017 was $2.7 million compared to $2.6 million and $3.0 million for the three months ended March 31, 2017 and June 30, 2016, respectively. Interest expense for the six months endedJune 30, 2017 was $5.3 million compared to $6.5 million for the same period in 2016. Interest expense was lower compared to the period ended June 30, 2016 primarily due to the reduction of our outstanding debt during the second quarter of 2016.

Income Tax Expense

The effective tax rates for the three months ended June 30, 2017 and 2016 were 15.0% and 3.9%, respectively. The effective tax rates for the six months ended June 30, 2017 and 2016 were 14.6% and 13.8%, respectively. Income tax expense of $4.0 million in the second quarter of 2017increased by $3.3 million compared to $0.7 million in the same period in 2016, due to the result of several items discrete to each quarter, along with changes in activity levels in jurisdictions with differing tax rates. In addition, during the second quarter of 2016, we settled a tax audit covering the years 2010 through 2012 that resulted in the release of reserves for uncertain tax positions in the amount of $0.9 million which contributed to the lower effective tax rate in that quarter.

Segment Analysis

Core Laboratories has taken steps to streamline its business by realigning its reporting structure into two reporting segments: Reservoir Description and Production Enhancement. These complementary segments provide different services and products and utilize different technologies for improving reservoir performance and increasing oil and gas recovery from new and existing fields. The following tables summarize our results by segment (in thousands):

	Three Months Ended June 30,						2017 / 2016					Three Months Ended Mar 31,			Q2 / Q1
	2017			2016			$ Change			% Change		2017			$ Change			% Change
Revenue:
Reservoir Description	$	104,313		$	108,278		$	(3,965	)	(4	)%	$	104,895		$	(582	)	(1	)%
Production Enhancement	59,590			39,791			19,799			50	%	52,912			6,678			13	%
Consolidated	$	163,903		$	148,069		$	15,834		11	%	$	157,807		$	6,096		4	%
Operating income (loss):
Reservoir Description	$	18,670		$	20,139		$	(1,469	)	(7	)%	$	15,940		$	2,730		17	%
Production Enhancement	10,765			247			10,518			4,258	%	7,395			3,370			46	%
Corporate and Other1	(28		)	(159		)	131			NM		(156		)	128			NM
Consolidated	$	29,407		$	20,227		$	9,180		45	%	$	23,179		$	6,228		27	%
(1) "Corporate and Other" represents those items that are not directly related to a particular segment
"NM"  means not meaningful

21

	Six Months Ended June 30,
	2017			2016			$ Change			% Change
Revenue:	(Unaudited)
Reservoir Description	$	209,208		$	215,702		$	(6,494	)	(3	)%
Production Enhancement	112,502			86,014			26,488			31	%
Consolidated	$	321,710		$	301,716		$	19,994		7	%
Operating income (loss):
Reservoir Description	$	34,610		$	38,737		$	(4,127	)	(11	)%
Production Enhancement	18,160			4,497			13,663			304	%
Corporate and Other1	(184		)	(67		)	(117		)	NM
Consolidated	$	52,586		$	43,167		$	9,419		22	%
(1) "Corporate and Other" represents those items that are not directly related to a particular segment
"NM"  means not meaningful

Reservoir Description

Revenue from the Reservoir Description segment decreased slightly to $104.3 million in the second quarter of 2017, compared to $104.9 million in the first quarter of 2017 and 4% lower than $108.3 million in the second quarter of 2016. For the six months ended June 30, 2017, revenue decreased $6.5 million to $209.2 million, compared to the same period in 2016. This segment's operations continue to work on large-scale, long-term crude-oil projects with an emphasis on international markets. We continue to focus on large-scale core analyses and reservoir fluids characterization studies offshore West and East Africa, offshore South America and in the Middle East, including Kuwait and the United Arab Emirates. Crude oil characterization, distillation, and fractionation studies increased during the first half of 2017, as oil company clients continued to investigate ways to maximize yields through the refining process. We are still focused on our joint industry projects, including the Utica, Duvernay, Montney, Wilrich, Mississippi Lime and Central Atlantic studies and the Marcellus, Niobrara, Wolfcamp, Eaglebine and Eagle Ford plays. Additionally, we currently have several major EOR projects for unconventional reservoirs underway in various stages in the laboratory and have initiated the GOM Deepwater Phase II joint industry project.

Operating income was $18.7 million in the second quarter of 2017, an increase of 17% compared to $15.9 million in the first quarter of 2017 and a decrease of 7% compared to $20.1 million in the second quarter of 2016. The sequential increase was primarily due to the severance, compensation and other charges incurred during the first quarter of 2017. Operating income for the six months ended June 30, 2017 decreased to $34.6 million compared to $38.7 million for the same period in 2016 primarily due to lower revenue.

Operating margins were 18% in the second quarter of 2017, an increase from 15% in the first quarter of 2017 and a decrease from 19% in the second quarter of 2016. The sequential improvement was due to lower costs sequentially as we incurred costs associated with severance, compensation, and other costs in the first quarter of 2017. This segment emphasizes technologically demanding services on internationally-based development and production-related crude oil projects over more cyclical exploration-related projects.

Production Enhancement

Revenue from the Production Enhancement segment, largely focused on North American unconventional reservoirs and complex completions and stimulations, was $59.6 million in the second quarter of 2017, an increase of 13% from $52.9 million in the first quarter of 2017 and an increase of 50% from $39.8 million in the second quarter of 2016. The increased revenue was tied to the increase in the North America completions during the first half of 2017, including the second quarter of 2017, as compared to the level of completions in the first quarter of 2017 and the second quarter of 2016. Revenue increased 31% to $112.5 million for the six months ended June 30, 2017 compared to $86.0 million for the same period in 2016 as the average number of U.S. land-based completions for the first six months of 2017 increased 23% from the same period in 2016.

Operating income in the second quarter of 2017 was $10.8 million, an increase from $7.4 million in the first quarter of 2017 and an increase from $0.2 million in the second quarter of 2016. The increased profitability was related to increased revenue and the benefits of our cost reduction program that was implemented in prior periods.

22

Operating margins were 18% in the second quarter of 2017, up from 14% in the first quarter of 2017 and 1% in the same period of 2016 as we benefited from the cost reduction program and realized improved absorption rates of our fixed costs across higher revenue.

Liquidity and Capital Resources

General

We have historically financed our activities through cash on hand, cash flows from operations, bank credit facilities, equity financing and the issuance of debt. Cash flows from operating activities provides the primary source of funds to finance operating needs, capital expenditures, our dividend and share repurchase program. As we are a Netherlands holding company, we conduct substantially all of our operations through subsidiaries. Our cash availability is largely dependent upon the ability of our subsidiaries to pay cash dividends or otherwise distribute or advance funds to us. There are no restrictions preventing any of our subsidiaries from repatriating earnings, and there are no restrictions or income taxes associated with distributing cash to the parent company through loans or advances. As of June 30, 2017, $11.2 million of our $14.3 million of cash was held by our foreign subsidiaries.

We utilize the non-GAAP financial measure of free cash flow to evaluate our cash flows and results of operations. Free cash flow is defined as net cash provided by operating activities (which is the most directly comparable GAAP measure) less cash paid for capital expenditures. Management believes that free cash flow provides useful information to investors regarding the cash available in the period that was in excess of our needs to fund our capital expenditures and operating activities. Free cash flow is not a measure of operating performance under GAAP, and should not be considered in isolation nor construed as an alternative to operating profit, net income (loss) or cash flows from operating, investing or financing activities, each as determined in accordance with GAAP. Free cash flow does not represent residual cash available for distribution because we may have other non-discretionary expenditures that are not deducted from the measure. Moreover, since free cash flow is not a measure determined in accordance with GAAP and thus is susceptible to varying interpretations and calculations, free cash flow as presented, may not be comparable to similarly titled measures presented by other companies. The following table reconciles this non-GAAP financial measure to the most directly comparable measure calculated and presented in accordance with GAAP (in thousands):

	Six Months Ended June 30,				2017 / 2016
	2017		2016		% Change
Free cash flow calculation:
Net cash provided by operating activities	$	48,476	$	73,814	(34	)%
Less: cash paid for capital expenditures	9,362		5,302		77	%
Free cash flow	$	39,114	$	68,512	(43	)%

The decrease in free cash flow for the first six months of 2017 compared to the same period in 2016 was primarily due to changes in working capital.

Cash Flows

The following table summarizes cash flows (in thousands):

	Six Months Ended June 30,						2017 / 2016
	2017			2016			% Change
Cash provided by/(used in):
Operating activities	$	48,476		$	73,814		(34	)%
Investing activities	(9,917		)	(5,832		)	70	%
Financing activities	(39,005		)	(75,698		)	(48	)%
Net change in cash and cash equivalents	$	(446	)	$	(7,716	)	(94	)%

Cash flows from operating activities for the first six months of 2017 compared to the same period in 2016 decreased primarily due to changes in working capital.

23

The increase in cash flows used in investing activities during the first six months of 2017 compared to the same period in 2016 was primarily attributable to increased capital expenditures in 2017.

Cash flows used in financing activities decreased for the first six months of 2017 compared to the same period in 2016. During the first six months of 2017, we increased our debt by $17 million, as compared to decreasing it by $225 million during the first six months of 2016. In the first six months of 2016, we issued 1,696,250 shares of our common stock with net proceeds of $197.2 million after deducting underwriting discounts and offering expenses. In the first six months of 2017, we repurchased 69,428 shares of our common stock for an aggregate purchase price of $7.4 million compared to the repurchase of 10,164 shares for an aggregate purchase price of $1.1 million during the same period in 2016.

Notes, Credit Facilities and Available Future Liquidity

We have two series of senior notes outstanding with an aggregate principal amount of $150 million ("Senior Notes") issued in a private placement transaction. Series A consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.01% and are due in full on September 30, 2021. Series B consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.11% and are due in full on September 30, 2023. Interest on each series of the Senior Notes is payable semi-annually on March 30 and September 30.

We maintain a revolving credit facility ("Credit Facility") that allows for an aggregate borrowing capacity of $400 million. The Credit Facility also provides an option to increase the commitment under the Credit Facility by an additional $50 million to bring the total borrowings available to $450 million if certain prescribed conditions are met by the Company. The Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00%. Any outstanding balance under the Credit Facility is due August 29, 2019, when the Credit Facility matures. Our available capacity at any point in time is reduced by borrowings outstanding at the time and outstanding letters of credit which totaled $21.7 million at June 30, 2017, resulting in an available borrowing capacity under the Credit Facility of $293.3 million. In addition to those items under the Credit Facility, we had $13.4 million of outstanding letters of credit and performance guarantees and bonds from other sources as of June 30, 2017.

The terms of the Credit Facility and Senior Notes require us to meet certain covenants, including, but not limited to, an interest coverage ratio (consolidated EBITDA divided by interest expense) and a leverage ratio (consolidated net indebtedness divided by consolidated EBITDA), where consolidated EBITDA (as defined in each agreement) and interest expense are calculated using the most recent four fiscal quarters. The Credit Facility has the more restrictive covenants with a minimum interest coverage ratio of 3.0 to 1.0 and a maximum leverage ratio of 2.5 to 1.0. We believe that we are in compliance with all such covenants contained in our credit agreements. Certain of our material, wholly-owned subsidiaries are guarantors or co-borrowers under the Credit Facility and Senior Notes.

In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million. See Note 11 - Derivative Instruments and Hedging Activities.

Our ability to maintain and grow our operating income and cash flow depends, to a large extent, on continued investing activities. We believe our future cash flows from operations, supplemented by our borrowing capacity and issuances of additional equity, should be sufficient to fund our debt requirements, capital expenditures, working capital, dividend payments and future acquisitions.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes in market risk from the information provided in Item 7A. "Quantitative and Qualitative Disclosures About Market Risk" in our 2016 Annual Report.

Item 4. Controls and Procedures

A complete discussion of our controls and procedures is included in our 2016 Annual Report.

24

Disclosure Controls and Procedures

Our management, under the supervision of and with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures, as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), as of the end of the period covered by this report. Our disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed by us in our reports filed or submitted under the Exchange Act is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective as of June 30, 2017 at the reasonable assurance level.

Our management does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. Further, the design of disclosure controls and internal control over financial reporting must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within a company have been detected.

Changes in Internal Control Over Financial Reporting

There have been no changes in our system of internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act, during the fiscal quarter ended June 30, 2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

25

CORE LABORATORIES N.V.

PART II - OTHER INFORMATION

Item 1.  Legal Proceedings

See Note 6 to our Consolidated Interim Financial Statements in Part I, Item 1 of this Quarterly Report.

Item 1A.  Risk Factors

Our business faces many risks. Any of the risks discussed in this Quarterly Report or our other SEC filings could have a material impact on our business, financial position or results of operations. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also impair our business operations. For a detailed discussion of the risk factors that should be understood by any investor contemplating investment in our securities, please refer to "Item 1A - Risk Factors" in our 2016 Annual Report.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds

Unregistered Sales of Equity Securities

None.

Issuer Repurchases of Equity Securities

The following table provides information about purchases of equity securities that are registered by us pursuant to Section 12 of the Exchange Act:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of a Publicly Announced Program	Maximum Number of Shares That May Yet be Purchased Under the Program (3)(4)
April 1 - 30, 2017 (1)	3,460	$	115.52	—	3,866,199
May 1 - 31, 2017 (2)	30,216	105.26		30,000	3,836,608
June 1 - 30, 2017	25,000	101.40		25,000	3,811,608
Total	58,676	$	104.22	55,000

(1) All shares repurchased during April, 2017 were surrendered to us by participants in a stock-based compensation plan to settle any personal tax liabilities which may result from the award.

(2) Includes 216 shares valued at $24,000, or $111.89 per share, surrendered to us by participants in a stock-based compensation plan to settle any personal tax liabilities which may result from the award.

(3) In connection with our initial public offering in September 1995, our shareholders authorized our Management Board to repurchase up to 10% of our issued share capital for a period of 18 months. This authorization was renewed at subsequent annual or special shareholder meetings. The repurchase of shares in the open market is at the discretion of management pursuant to this shareholder authorization.

(4) We distributed 11,180 treasury shares upon vesting of stock-based awards during the three months ended June 30, 2017.

26

Item 6.  Exhibits

Exhibit No.		Exhibit Title	Incorporated by reference from the following documents
3.1	-	Articles of Association of Core Laboratories N.V., as amended in 2012 (including English translation)	Exhibit 3.1 filed on February 19, 2013 with 2012 10-K (File No. 001-14273)
31.1	-	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed herewith
31.2	-	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed herewith
32.1	-	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Furnished herewith
32.2	-	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Furnished herewith
101.INS	-	XBRL Instance Document	Filed herewith
101.SCH	-	XBRL Schema Document	Filed herewith
101.CAL	-	XBRL Calculation Linkbase Document	Filed herewith
101.LAB	-	XBRL Label Linkbase Document	Filed herewith
101.PRE	-	XBRL Presentation Linkbase Document	Filed herewith
101.DEF	-	XBRL Definition Linkbase Document	Filed herewith

27

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant, Core Laboratories N.V., has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		CORE LABORATORIES N.V.
Date:	July 26, 2017	By:	/s/ Richard L. Bergmark
			Richard L. Bergmark
			Chief Financial Officer
			(Duly Authorized Officer and
			Principal Financial Officer)

28

EX-31.1

Certification

Exhibit 31.1

I, David M. Demshur, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Core Laboratories N.V. (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Date:	July 26, 2017	By:	/s/ David M. Demshur
			David M. Demshur
			Chief Executive Officer

EX-31.2

Certification

Exhibit 31.2

I, Richard L. Bergmark, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Core Laboratories N.V. (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Date:	July 26, 2017	By:	/s/ Richard L. Bergmark
			Richard L. Bergmark
			Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of

Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, David M. Demshur, Chief Executive Officer of Core Laboratories N.V. (the "Company"), hereby certify that the accompanying report on Form 10-Q for the quarter ended June 30, 2017, filed by the Company with the Securities and Exchange Commission on the date hereof fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended, (the "Report").

I further certify that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	July 26, 2017	/s/ David M. Demshur
		Name: David M. Demshur
		Title: Chief Executive Officer

EX-32.2

Exhibit 32.2

Certification of

Chief Financial Officer

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Richard L. Bergmark, Chief Financial Officer of Core Laboratories N.V. (the "Company"), hereby certify that the accompanying report on Form 10-Q for the quarter ended June 30, 2017, filed by the Company with the Securities and Exchange Commission on the date hereof fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended, (the "Report").

I further certify that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	July 26, 2017	/s/ Richard L. Bergmark
		Name: Richard L. Bergmark
		Title: Chief Financial Officer

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 25, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	CORE LABORATORIES N V
Entity Central Index Key	0001000229
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		44,138,104

XML

Consolidated Balance Sheets Statement - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 14,318	$ 14,764
Accounts receivable, net of allowance for doubtful accounts of $2,905 and $3,139 at 2017 and 2016, respectively	128,983	114,329
Inventories	35,598	33,720
Prepaid expenses	11,353	10,711
Income taxes receivable	9,067	6,426
Other current assets	6,903	6,511
TOTAL CURRENT ASSETS	206,222	186,461
PROPERTY, PLANT AND EQUIPMENT, net	125,746	129,882
INTANGIBLES, net	9,705	9,936
GOODWILL	179,044	179,044
DEFERRED TAX ASSETS, net	13,748	20,605
OTHER ASSETS	49,293	47,124
TOTAL ASSETS	583,758	573,052
CURRENT LIABILITIES:
Accounts payable	41,607	33,720
Accrued payroll and related costs	22,817	19,411
Taxes other than payroll and income	7,318	5,816
Unearned revenue	17,046	15,690
Income taxes payable	943	15,718
Other current liabilities	11,075	13,668
TOTAL CURRENT LIABILITIES	100,806	104,023
LONG-TERM DEBT, net	233,739	216,488
DEFERRED COMPENSATION	49,308	46,251
DEFERRED TAX LIABILITIES, net	6,146	6,277
OTHER LONG-TERM LIABILITIES	42,307	44,716
COMMITMENTS AND CONTINGENCIES (Note 6)
Preference shares, EUR 0.02 par value; 6,000,000 shares authorized, none issued or outstanding	0	0
Common shares, EUR 0.02 par value; 200,000,000 shares authorized, 44,796,252 issued and 44,128,235 outstanding at 2017 and 44,796,252 issued and 44,151,261 outstanding at 2016	1,148	1,148
Additional paid-in capital	59,043	52,850
Retained earnings	179,631	187,957
Accumulated other comprehensive income (loss)	(9,621)	(9,828)
Treasury shares (at cost), 668,017 at 2017 and 644,991 at 2016	(82,708)	(80,773)
Total Core Laboratories N.V. shareholders' equity	147,493	151,354
Non-controlling interest	3,959	3,943
TOTAL EQUITY	151,452	155,297
TOTAL LIABILITIES AND EQUITY	$ 583,758	$ 573,052

XML

Consolidated Balance Sheets Balance Sheet Parenthetical $ in Thousands	Jun. 30, 2017 USD ($) shares	Jun. 30, 2017 € / shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2016 € / shares
Allowance for Doubtful Accounts Receivable, Current | $	$ 2,905		$ 3,139
Common Stock, Par or Stated Value Per Share | € / shares		€ 0.02		€ 0.02
Common Stock, Shares Authorized	200,000,000		200,000,000
Common Stock, Shares, Issued	44,796,252		44,796,252
Common Stock, Shares, Outstanding	44,128,235		44,151,261
Treasury Stock, Shares	668,017		644,991
Preferred Stock, Par or Stated Value Per Share | € / shares		€ 0.02		€ 0.02
Preferred Stock, Shares Authorized	6,000,000		6,000,000
Preferred Stock, Shares Issued	0		0
Preferred Stock, Shares Outstanding	0		0

XML

Consolidated Statements of Operations Statement - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
REVENUE:
Services	$ 117,239	$ 118,172	$ 238,175	$ 240,942
Product sales	46,664	29,897	83,535	60,774
Total revenue	163,903	148,069	321,710	301,716
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below	80,431	83,349	164,032	168,643
Cost of product sales, exclusive of depreciation expense shown below	36,687	26,650	67,658	54,170
General and administrative expense, exclusive of depreciation expense shown below	11,100	11,139	23,856	22,189
Depreciation	6,093	6,531	12,295	13,158
Amortization	209	220	434	440
Other (income) expense, net	(24)	(47)	849	(51)
OPERATING INCOME	29,407	20,227	52,586	43,167
Interest expense	2,692	3,021	5,310	6,455
Income before income tax expense	26,715	17,206	47,276	36,712
Income tax expense	4,006	671	6,885	5,060
Net income	22,709	16,535	40,391	31,652
Net income (loss) attributable to non-controlling interest	19	(89)	43	(54)
Net income attributable to Core Laboratories N.V.	$ 22,690	$ 16,624	$ 40,348	$ 31,706
EARNINGS PER SHARE INFORMATION:
Basic earnings per share attributable to Core Laboratories N.V. (in dollars per share)	$ 0.51	$ 0.38	$ 0.91	$ 0.74
Diluted earnings per share attributable to Core Laboratories N.V. (in dollars per share)	0.51	0.38	0.91	0.74
Cash dividends per share (in dollars per share)	$ 0.55	$ 0.55	$ 1.10	$ 1.10
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic	44,164	43,297	44,162	42,839
Diluted	44,374	43,505	44,360	43,008

XML

Consolidated Statement of Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 22,709	$ 16,535	$ 40,391	$ 31,652
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	(278)	(800)	(197)	(2,420)
Interest rate swap amounts reclassified to interest expense	140	211	307	424
Income taxes on derivatives	48	217	(39)	735
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(90)	(372)	71	(1,261)
Amortization to net income of prior service cost	(19)	(19)	(38)	(38)
Amortization to net income of actuarial loss	110	148	220	296
Income taxes on pension and other postretirement benefit plans	(22)	(32)	(46)	(64)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	69	97	136	194
Other Comprehensive Income (Loss), Net of Tax	(21)	(275)	207	(1,067)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Comprehensive income	22,688	16,260	40,598	30,585
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	19	(89)	43	(54)
Comprehensive income attributable to Core Laboratories N.V.	$ 22,669	$ 16,349	$ 40,555	$ 30,639

XML

Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 40,391	$ 31,652
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	11,563	11,087
Depreciation and amortization	12,729	13,598
Changes to value of life insurance policies	(48)	(497)
Deferred income taxes	6,766	(1,256)
Other non-cash items	(561)	(1,670)
Changes in assets and liabilities:
Accounts receivable	(14,527)	34,700
Inventories	(1,926)	805
Prepaid expenses and other current assets	(3,675)	(2,344)
Other assets	(1,083)	733
Accounts payable	8,443	(3,826)
Accrued expenses	(12,459)	(6,079)
Increase (Decrease) in Deferred Revenue	1,356	(2,987)
Other long-term liabilities	1,507	(102)
Net cash provided by operating activities	48,476	73,814
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(9,362)	(5,302)
Patents and other intangibles	(203)	(99)
Proceeds from sale of assets	511	539
Premiums on life insurance	(863)	(970)
Net cash used in investing activities	(9,917)	(5,832)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(67,000)	(258,676)
Proceeds from debt borrowings	84,000	34,000
Excess tax benefits from stock-based compensation	0	(284)
Non-controlling interest - dividend	(27)	(211)
Payments of Dividends	(48,590)	(46,626)
Repurchase of common shares	(7,388)	(1,112)
Stock Issued During Period, Value, New Issues	0	197,211
Net cash used in financing activities	(39,005)	(75,698)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(446)	(7,716)
CASH AND CASH EQUIVALENTS, beginning of period	14,764	22,494
CASH AND CASH EQUIVALENTS, end of period	$ 14,318	$ 14,778

XML

Basis of Presentation

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

The accompanying unaudited consolidated financial statements include the accounts of Core Laboratories N.V. and its subsidiaries for which we have a controlling voting interest and/or a controlling financial interest. These financial statements have been prepared in accordance with United States ("U.S.") generally accepted accounting principles ("GAAP") for interim financial information using the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all of the information and footnote disclosures required by U.S. GAAP and should be read in conjunction with the audited financial statements and the summary of significant accounting policies and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2016 (the "2016 Annual Report").

Core Laboratories N.V. uses the equity method of accounting for investments in which it has less than a majority interest and over which it does not exercise control but does exert significant influence. We use the cost method to record certain other investments in which we own less than 20% of the outstanding equity and do not exercise control or exert significant influence. Non-controlling interests have been recorded to reflect outside ownership attributable to consolidated subsidiaries that are less than 100% owned. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the interim periods presented have been included in these financial statements. Furthermore, the operating results presented for the three and six months ended June 30, 2017 may not necessarily be indicative of the results that may be expected for the year ending December 31, 2017.

Core Laboratories N.V.'s balance sheet information for the year ended December 31, 2016 was derived from the 2016 audited consolidated financial statements but does not include all disclosures in accordance with U.S. GAAP.

Core Lab's continuing efforts to streamline its business has led to a simplification of its reporting structure and as of January 1, 2017, the Company presents its operating results in two reporting segments: Reservoir Description and Production Enhancement. For more detail about our segments, see Note 13 - Segment Reporting.

Certain reclassifications were made to prior period amounts in order to conform to the current period presentation. These reclassifications had no impact on the reported net income or cash flows for the three or six months ended June 30, 2016.

References to "Core Lab", the "Company", "we", "our" and similar phrases are used throughout this Quarterly Report on Form 10-Q and relate collectively to Core Laboratories N.V. and its consolidated subsidiaries.

XML

Inventories

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following (in thousands):

	June 30, 2017		December 31, 2016
Finished goods	$	22,506	$	21,635
Parts and materials	11,762		11,185
Work in progress	1,330		900
Total inventories	$	35,598	$	33,720

We include freight costs incurred for shipping inventory to our clients in the Cost of product sales caption in the accompanying Consolidated Statements of Operations.

XML

Acquisitions (Notes)

6 Months Ended

Jun. 30, 2017

Acquisitions [Abstract]

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

We had no significant acquisitions during the six months endedJune 30, 2017.

XML

Debt and Capital Lease Obligations

6 Months Ended

Jun. 30, 2017

Debt and Capital Lease Obligations [Abstract]

Debt and Capital Lease Obligations

We have no capital lease obligations. Debt is as follows (in thousands):

	June 30, 2017			December 31, 2016
Senior notes	$	150,000		$	150,000
Credit facility	85,000			68,000
Total debt	235,000			218,000
Less: Debt issuance costs	(1,261		)	(1,512		)
Long-term debt, net	$	233,739		$	216,488

We have two series of senior notes outstanding with an aggregate principal amount of $150 million ("Senior Notes") issued in a private placement transaction. Series A consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.01% and are due in full on September 30, 2021. Series B consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.11% and are due in full on September 30, 2023. Interest on each series of the Senior Notes is payable semi-annually on March 30 and September 30.

We maintain a revolving credit facility ("Credit Facility") that allows for an aggregate borrowing capacity of $400 million. The Credit Facility also provides an option to increase the commitment under the Credit Facility by an additional $50 million to bring the total borrowings available to $450 million if certain prescribed conditions are met by the Company. The Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00%. Any outstanding balance under the Credit Facility is due August 29, 2019, when the Credit Facility matures. Our available capacity at any point in time is reduced by borrowings outstanding at the time and outstanding letters of credit which totaled $21.7 million at June 30, 2017, resulting in an available borrowing capacity under the Credit Facility of $293.3 million. In addition to those items under the Credit Facility, we had $13.4 million of outstanding letters of credit and performance guarantees and bonds from other sources as of June 30, 2017.

The terms of the Credit Facility and Senior Notes require us to meet certain covenants, including, but not limited to, an interest coverage ratio (consolidated EBITDA divided by interest expense) and a leverage ratio (consolidated net indebtedness divided by consolidated EBITDA), where consolidated EBITDA (as defined in each agreement) and interest expense are calculated using the most recent four fiscal quarters. The Credit Facility has the more restrictive covenants with a minimum interest coverage ratio of 3.0 to 1.0 and a maximum leverage ratio of 2.5 to 1.0. We believe that we are in compliance with all such covenants contained in our credit agreements. Certain of our material, wholly-owned subsidiaries are guarantors or co-borrowers under the Credit Facility and Senior Notes.

In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million. See Note 11 - Derivative Instruments and Hedging Activities.

The estimated fair value of total debt at June 30, 2017 and December 31, 2016 approximated the book value of total debt. The fair value was estimated using Level 2 inputs by calculating the sum of the discounted future interest and principal payments through the date of maturity.

XML

Pensions and Other Postretirement Benefits

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Pensions and Other Postretirement Benefits

Defined Benefit Plan

We provide a noncontributory defined benefit pension plan covering substantially all of our Dutch employees ("Dutch Plan") who were hired prior to 2007. The pension benefit is based on years of service and final pay or career average pay, depending on when the employee began participating. The benefits earned by the employees are immediately vested.

The following table summarizes the components of net periodic pension cost under the Dutch Plan (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Service cost	$	366		$	375		$	741		$	733
Interest cost	268			342			543			669
Expected return on plan assets	(228		)	(287		)	(460		)	(562		)
Amortization of prior service cost	(19		)	(19		)	(38		)	(38		)
Amortization of actuarial loss	110			148			220			296
Net periodic pension cost	$	497		$	559		$	1,006		$	1,098

During the six months ended June 30, 2017, we contributed $1.6 million to fund the estimated 2017 premiums on investment contracts held by the Dutch Plan.

XML

Commitments and Contingencies

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

We have been and may from time to time be named as a defendant in legal actions that arise in the ordinary course of business. These include, but are not limited to, employment-related claims and contractual disputes or claims for personal injury or property damage which occur in connection with the provision of our services and products. Management does not currently believe that any of our pending contractual, employment-related, personal injury or property damage claims and disputes will have a material effect on our future results of operations, financial position or cash flow.

XML

Equity

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Equity

During the three months ended June 30, 2017, we repurchased 58,676 of our common shares for $6.1 million; included in this total were rights to 3,676 shares valued at $0.4 million surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. During the six months ended June 30, 2017, we repurchased 69,428 of our common shares for $7.4 million; included in this total were rights to 14,428 shares valued at $1.7 million surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. Such common shares, unless canceled, may be reissued for a variety of purposes such as future acquisitions, non-employee director stock awards or employee stock awards. We distributed 11,180 and 46,402 treasury shares upon vesting of stock-based awards during the three and six months ended June 30, 2017, respectively.

In February and May 2017, we paid quarterly dividends of $0.55 per share of common stock. In addition, on July 6, 2017, we declared a quarterly dividend of $0.55 per share of common stock for shareholders of record on July 17, 2017 and payable on August 14, 2017.

The following table summarizes our changes in equity for the six months ended June 30, 2017 (in thousands):

	Common Shares		Additional Paid-In Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Non-Controlling Interest			Total Equity
December 31, 2016	$	1,148	$	52,850	$	187,957		$	(9,828	)	$	(80,773	)	$	3,943		$	155,297
Adoption of ASU 2016-09 (see note 14)	—		84		(84		)	—			—			—			—
Stock based-awards	—		6,109		—			—			5,453			—			11,562
Repurchase of common shares	—		—		—			—			(7,388		)	—			(7,388		)
Dividends paid	—		—		(48,590		)	—			—			—			(48,590		)
Non-controlling interest dividends	—		—		—			—			—			(27		)	(27		)
Amortization of deferred pension costs, net of tax	—		—		—			136			—			—			136
Interest rate swaps, net of tax	—		—		—			71			—			—			71
Net income	—		—		40,348			—			—			43			40,391
June 30, 2017	$	1,148	$	59,043	$	179,631		$	(9,621	)	$	(82,708	)	$	3,959		$	151,452

Accumulated other comprehensive income (loss) consisted of the following (in thousands):

	June 30, 2017			December 31, 2016
Prior service cost	572			600
Unrecognized net actuarial loss	(9,605		)	(9,769		)
Fair value of derivatives, net of tax	(588		)	(659		)
Total accumulated other comprehensive income (loss)	$	(9,621	)	$	(9,828	)

XML

Earnings per Share

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Earnings per Share

We compute basic earnings per common share by dividing net income attributable to Core Laboratories N.V. by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common shares include additional shares in the weighted average share calculations associated with the incremental effect of dilutive restricted stock awards and contingently issuable shares, as determined using the treasury stock method. The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2017	2016	2017	2016
Weighted average basic common shares outstanding	44,164	43,297	44,162	42,839
Effect of dilutive securities:
Performance shares	148	127	143	105
Restricted stock	62	81	55	64
Weighted average diluted common and potential common shares outstanding	44,374	43,505	44,360	43,008

XML

Other (Income) Expense, Net

6 Months Ended

Jun. 30, 2017

Other Income and Expenses [Abstract]

Other (Income) Expense, Net

The components of Other (income) expense, net, were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Sale of assets	$	(123	)	$	(122	)	$	(302	)	$	(488	)
Results of non-consolidated subsidiaries	(96		)	(136		)	(175		)	(324		)
Foreign exchange	358			433			455			1,212
Rents and royalties	(109		)	(98		)	(231		)	(199		)
Severance, compensation and other charges	—			—			1,145			—
Other, net	(54		)	(124		)	(43		)	(252		)
Total other (income) expense, net	$	(24	)	$	(47	)	$	849		$	(51	)

Foreign exchange gains and losses are summarized in the following table (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Gains) losses by currency	2017			2016			2017			2016
Angolan Kwanza	$	(4	)	$	43		$	(3	)	$	505
British Pound	(74		)	247			(55		)	475
Euro	732			(40		)	835			170
Mexican Peso	11			114			(28		)	136
Russian Ruble	(141		)	(57		)	(125		)	(93		)
Other currencies, net	(166		)	126			(169		)	19
Total (gain) loss, net	$	358		$	433		$	455		$	1,212

XML

Income Tax Expense

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Income Tax Expense

The effective tax rates for the three months ended June 30, 2017 and 2016 were 15.0% and 3.9%, respectively. The effective tax rates for the six months ended June 30, 2017 and 2016 were 14.6% and 13.8%, respectively. Income tax expense of $4.0 million in the second quarter of 2017increased by $3.3 million compared to $0.7 million in the same period in 2016, due to the result of several items discrete to each quarter, along with changes in activity levels in jurisdictions with differing tax rates. In addition, during the second quarter of 2016, we settled a tax audit covering the years 2010 through 2012 that resulted in the release of reserves for uncertain tax positions in the amount of $0.9 million which contributed to the lower effective tax rate in that quarter.

On March 29, 2017, the Prime Minister of the United Kingdom ("UK") formally notified the European Council of the UK's intention to withdraw from the European Union ("EU") under Article 50 of the Treaty of Lisbon. The UK's formal withdrawal may impact tax exemptions and reliefs on intra-European transactions between our UK affiliates and EU companies. In addition, it may impact transactions between our UK affiliates and non-EU based companies as EU tax treaties may no longer apply to these transactions.

Due to the uncertainty involved in evaluating the effect of the loss of tax exemptions and reliefs, we are unable to estimate the impact of these changes, if any, at this time. We will continue to monitor developments in this area.

XML

Derivative Instruments (Notes)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

11.  DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

We are exposed to market risks related to fluctuations in interest rates. To mitigate these risks, we utilize derivative instruments in the form of interest rate swaps. We do not enter into derivative transactions for speculative purposes.

Interest Rate Risk

Our Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00%. As a result of two interest rate swap agreements, we are subject to interest rate risk on debt in excess of $50 million drawn on our Credit Facility.

In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million to hedge changes in the variable rate interest expense on $50 million of our existing or replacement LIBOR-priced debt. Under the first swap agreement of $25 million, we have fixed the LIBOR portion of the interest rate at 1.73% through August 29, 2019, and under the second swap agreement of $25 million, we have fixed the LIBOR portion of the interest rate at 2.5% through August 29, 2024. Each swap is measured at fair value and recorded in our Consolidated Balance Sheet as a liability. They are designated and qualify as cash flow hedging instruments and are highly effective. Unrealized losses are deferred to shareholders' equity as a component of accumulated other comprehensive loss and are recognized in income as an increase to interest expense in the period in which the related cash flows being hedged are recognized in expense.

At June 30, 2017, we had fixed rate long-term debt aggregating $200 million and variable rate long-term debt aggregating $35 million, after taking into account the effect of the swaps.

The fair values of outstanding derivative instruments are as follows:

	Fair Value of Derivatives
	June 30, 2017		December 31, 2016		Balance Sheet Classification
Derivatives designated as hedges:
5 year interest rate swap	$	103	$	211	Other long-term liabilities
10 year interest rate swap	833		835		Other long-term liabilities
	$	936	$	1,046

The fair value of all outstanding derivatives was determined using a model with inputs that are observable in the market (Level 2) or can be derived from or corroborated by observable data.

The effect of the interest rate swaps on the Consolidated Statement of Operations was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016		Income Statement Classification
Derivatives designated as hedges:
5 year interest rate swap	$	46	$	81	$	105	$	163	Increase to interest expense
10 year interest rate swap	94		130		202		261		Increase to interest expense
	$	140	$	211	$	307	$	424

XML

Financial Instruments (Notes)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

12.  FINANCIAL INSTRUMENTS

The Company's only financial assets and liabilities which are measured at fair value on a recurring basis relate to certain aspects of the Company's benefit plans and our derivative instruments. We use the market approach to value certain assets and liabilities at fair value using significant other observable inputs (Level 2) with the assistance of a third-party specialist. We do not have any assets or liabilities measured at fair value on a recurring basis using quoted prices in an active market (Level 1) or significant unobservable inputs (Level 3). Gains and losses related to the fair value changes in the deferred compensation assets and liabilities are recorded in General and administrative expense in the Consolidated Statements of Operations. Gains and losses related to the fair value of the interest rate swaps are recorded in Other comprehensive income. The following table summarizes the fair value balances (in thousands):

			Fair Value Measurement at
			June 30, 2017
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	26,788	$	—	$	26,788	$	—
Liabilities:
Deferred compensation plan	$	33,963	$	—	$	33,963	$	—
5 year interest rate swap	103		—		103		—
10 year interest rate swap	833		—		833		—
	$	34,899	$	—	$	34,899	$	—

			Fair Value Measurement at
			December 31, 2016
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	25,530	$	—	$	25,530	$	—
Liabilities:
Deferred compensation plan	$	31,672	$	—	$	31,672	$	—
5 year interest rate swap	211		—		211		—
10 year interest rate swap	835		—		835		—
	$	32,718	$	—	$	32,718	$	—
(1) Trust assets consist of the cash surrender value of life insurance policies and are intended to assist in the funding of the deferred compensation agreements.

XML

Segment Reporting

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Reporting

Core Laboratories has taken steps to streamline its business by realigning its reporting structure into two reporting segments. These complementary segments provide different services and products and utilize different technologies for improving reservoir performance and increasing oil and gas recovery from new and existing fields. In connection with the realignment of our reporting structure, amounts previously reported in our Reservoir Management segment are now presented within our Reservoir Description and Production Enhancement segments, and prior periods have been revised to conform to the current presentation.

• Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples to increase production and improve recovery of oil and gas from our clients' reservoirs. We provide laboratory based analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry. We also provide proprietary and joint industry studies based on these types of analysis.

• Production Enhancement: Includes services and products relating to reservoir well completions, perforations, stimulations and production. We provide integrated diagnostic services to evaluate and monitor the effectiveness of well completions and to develop solutions aimed at increasing the effectiveness of enhanced oil recovery projects.

Results for these segments are presented below. We use the same accounting policies to prepare our segment results as are used to prepare our Consolidated Financial Statements. All interest and other non-operating income (expense) is attributable to Corporate & Other and is not allocated to specific segments. Summarized financial information concerning our segments is shown in the following table (in thousands):

	Reservoir Description		Production Enhancement		Corporate & Other 1			Consolidated
Three Months Ended June 30, 2017
Revenue from unaffiliated clients	$	104,313	$	59,590	$	—		$	163,903
Inter-segment revenue	47		249		(296		)	—
Segment operating income (loss)	18,670		10,765		(28		)	29,407
Total assets (at end of period)	319,433		206,096		58,229			583,758
Capital expenditures	2,098		769		46			2,913
Depreciation and amortization	4,528		1,256		518			6,302
Three Months Ended June 30, 2016
Revenue from unaffiliated clients	$	108,278	$	39,791	$	—		$	148,069
Inter-segment revenue	304		384		(688		)	—
Segment operating income (loss)	20,139		247		(159		)	20,227
Total assets (at end of period)	323,623		196,339		52,144			572,106
Capital expenditures	2,274		160		10			2,444
Depreciation and amortization	4,631		1,501		619			6,751
Six Months Ended June 30, 2017
Revenue from unaffiliated clients	$	209,208	$	112,502	$	—		$	321,710
Inter-segment revenue	221		450		(671		)	—
Segment operating income (loss)	34,610		18,160		(184		)	52,586
Total assets	319,433		206,096		58,229			583,758
Capital expenditures	4,675		3,789		898			9,362
Depreciation and amortization	9,148		2,542		1,039			12,729
Six Months Ended June 30, 2016
Revenue from unaffiliated clients	$	215,702	$	86,014	$	—		$	301,716
Inter-segment revenue	1,046		604		(1,650		)	—
Segment operating income (loss)	38,737		4,497		(67		)	43,167
Total assets	323,623		196,339		52,144			572,106
Capital expenditures	4,356		538		408			5,302
Depreciation and amortization	9,267		3,089		1,242			13,598

(1) "Corporate & Other" represents those items that are not directly related to a particular segment and eliminations.

XML

Recent Accounting Pronouncements

6 Months Ended

Jun. 30, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recent Accounting Pronouncements

Pronouncements Adopted in 2017

In July 2015, the FASB issued ASU 2015-11 ("Simplifying the Measurement of Inventory") to require the measurement of inventory at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. We adopted this standard on January 1, 2017. The adoption of this standard had no effect on our Consolidated Balance Sheets, Consolidated Statements of Operations and Consolidated Statements of Cash Flows.

In March 2016, the FASB issued ASU 2016-09 ("Improvements to Employee Share-Based Payment Accounting") to simplify the accounting for share-based payment transactions, including accounting for forfeitures, excess tax benefit/expense, and tax withholding requirements. Under this new guidance, (1) companies have the option to estimate how many shares in a grant will be forfeited or to elect to recognize forfeitures as they occur; (2) all excess tax benefit and expense is recognized as income tax benefit or expense in the income statement as a discrete item to the quarter, and the accumulated benefits in additional paid-in capital ("APIC") are eliminated; and (3) companies are able to withhold share amounts up to the statutory maximum and the award will still be classified as equity. We adopted this standard on January 1, 2017 and have elected to recognize forfeitures as they occur. This resulted in a reclassification between retained earnings and additional paid-in-capital of $84 thousand for the estimated forfeitures on unvested shares as of January 1, 2017. The adoption of this standard will result in periodic adjustments in the recognition of stock compensation expense associated with forfeitures in the period in which they occur. In addition to the income statement treatment of including the excess tax benefit/expense as a discrete income tax item each quarter, this has been removed from the Cash from financing activities section of the Statement of Cash Flows.

Pronouncements Not Yet Effective

In May 2014, the FASB issued ASU 2014-09 ("Revenue from Contracts with Customers"), which provides guidance on revenue recognition. The core principle of this guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance requires entities to apply a five-step method to (1) identify the contract(s) with customers; (2) identify the performance obligation(s) in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligation(s) in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017 (on July 9, 2015, the FASB deferred the implementation date for one year). We are currently analyzing the standard's impact on our revenues by looking at all of our revenue streams to determine the impact on our Consolidated Balance Sheets, Consolidated Statements of Operations and Consolidated Statements of Cash Flows. At this point, we do not anticipate any material changes to our revenue recognition policies and procedures nor to our financial statements, but extensive additional disclosures will be required.

In February 2016, the FASB issued ASU 2016-02 ("Leases"), which introduces the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The new standard establishes a right-of-use ("ROU") model that requires a lessee to record an ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. The new standard is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years with early adoption permitted. We do not anticipate the adoption of this standard to have a material impact on how we currently record lease transactions; however, it may have a significant impact on our Consolidated Balance Sheets, increasing both asset balances and liability balances.

In June 2016, the FASB issued ASU 2016-13 ("Measurement of Credit Losses on Financial Instruments") which replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The new standard is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years with early adoption permitted in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are evaluating the impact that the adoption of this standard will have on our consolidated financial statements.

XML

Inventories (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30, 2017		December 31, 2016
Finished goods	$	22,506	$	21,635
Parts and materials	11,762		11,185
Work in progress	1,330		900
Total inventories	$	35,598	$	33,720

XML

Debt and Capital Lease Obligations (Tables)

6 Months Ended

Jun. 30, 2017

Debt and Capital Lease Obligations [Abstract]

Schedule of Long-term Debt Instruments

(in thousands):

	June 30, 2017			December 31, 2016
Senior notes	$	150,000		$	150,000
Credit facility	85,000			68,000
Total debt	235,000			218,000
Less: Debt issuance costs	(1,261		)	(1,512		)
Long-term debt, net	$	233,739		$	216,488

XML

Pensions and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table summarizes the components of net periodic pension cost under the Dutch Plan (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Service cost	$	366		$	375		$	741		$	733
Interest cost	268			342			543			669
Expected return on plan assets	(228		)	(287		)	(460		)	(562		)
Amortization of prior service cost	(19		)	(19		)	(38		)	(38		)
Amortization of actuarial loss	110			148			220			296
Net periodic pension cost	$	497		$	559		$	1,006		$	1,098

XML

Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Schedule of Stockholders Equity

The following table summarizes our changes in equity for the six months ended June 30, 2017 (in thousands):

	Common Shares		Additional Paid-In Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Non-Controlling Interest			Total Equity
December 31, 2016	$	1,148	$	52,850	$	187,957		$	(9,828	)	$	(80,773	)	$	3,943		$	155,297
Adoption of ASU 2016-09 (see note 14)	—		84		(84		)	—			—			—			—
Stock based-awards	—		6,109		—			—			5,453			—			11,562
Repurchase of common shares	—		—		—			—			(7,388		)	—			(7,388		)
Dividends paid	—		—		(48,590		)	—			—			—			(48,590		)
Non-controlling interest dividends	—		—		—			—			—			(27		)	(27		)
Amortization of deferred pension costs, net of tax	—		—		—			136			—			—			136
Interest rate swaps, net of tax	—		—		—			71			—			—			71
Net income	—		—		40,348			—			—			43			40,391
June 30, 2017	$	1,148	$	59,043	$	179,631		$	(9,621	)	$	(82,708	)	$	3,959		$	151,452

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) consisted of the following (in thousands):

	June 30, 2017			December 31, 2016
Prior service cost	572			600
Unrecognized net actuarial loss	(9,605		)	(9,769		)
Fair value of derivatives, net of tax	(588		)	(659		)
Total accumulated other comprehensive income (loss)	$	(9,621	)	$	(9,828	)

XML

Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2017	2016	2017	2016
Weighted average basic common shares outstanding	44,164	43,297	44,162	42,839
Effect of dilutive securities:
Performance shares	148	127	143	105
Restricted stock	62	81	55	64
Weighted average diluted common and potential common shares outstanding	44,374	43,505	44,360	43,008

XML

Other (Income) Expense, Net (Tables)

6 Months Ended

Jun. 30, 2017

Other Income and Expenses [Abstract]

Foreign Currency Gains Losses By Currency

Foreign exchange gains and losses are summarized in the following table (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Gains) losses by currency	2017			2016			2017			2016
Angolan Kwanza	$	(4	)	$	43		$	(3	)	$	505
British Pound	(74		)	247			(55		)	475
Euro	732			(40		)	835			170
Mexican Peso	11			114			(28		)	136
Russian Ruble	(141		)	(57		)	(125		)	(93		)
Other currencies, net	(166		)	126			(169		)	19
Total (gain) loss, net	$	358		$	433		$	455		$	1,212

Schedule of Other Operating Cost and Expense, by Component

The components of Other (income) expense, net, were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Sale of assets	$	(123	)	$	(122	)	$	(302	)	$	(488	)
Results of non-consolidated subsidiaries	(96		)	(136		)	(175		)	(324		)
Foreign exchange	358			433			455			1,212
Rents and royalties	(109		)	(98		)	(231		)	(199		)
Severance, compensation and other charges	—			—			1,145			—
Other, net	(54		)	(124		)	(43		)	(252		)
Total other (income) expense, net	$	(24	)	$	(47	)	$	849		$	(51	)

XML

Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Derivatives, Fair Value [Line Items]

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

The fair values of outstanding derivative instruments are as follows:

	Fair Value of Derivatives
	June 30, 2017		December 31, 2016		Balance Sheet Classification
Derivatives designated as hedges:
5 year interest rate swap	$	103	$	211	Other long-term liabilities
10 year interest rate swap	833		835		Other long-term liabilities
	$	936	$	1,046

XML

Derivative Instruments Derivative Instruments Gain Loss Table (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Instruments, Gain (Loss) [Table Text Block]

The effect of the interest rate swaps on the Consolidated Statement of Operations was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016		Income Statement Classification
Derivatives designated as hedges:
5 year interest rate swap	$	46	$	81	$	105	$	163	Increase to interest expense
10 year interest rate swap	94		130		202		261		Increase to interest expense
	$	140	$	211	$	307	$	424

XML

Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements [Table Text Block]

			Fair Value Measurement at
			June 30, 2017
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	26,788	$	—	$	26,788	$	—
Liabilities:
Deferred compensation plan	$	33,963	$	—	$	33,963	$	—
5 year interest rate swap	103		—		103		—
10 year interest rate swap	833		—		833		—
	$	34,899	$	—	$	34,899	$	—

			Fair Value Measurement at
			December 31, 2016
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation trust assets (1)	$	25,530	$	—	$	25,530	$	—
Liabilities:
Deferred compensation plan	$	31,672	$	—	$	31,672	$	—
5 year interest rate swap	211		—		211		—
10 year interest rate swap	835		—		835		—
	$	32,718	$	—	$	32,718	$	—
(1) Trust assets consist of the cash surrender value of life insurance policies and are intended to assist in the funding of the deferred compensation agreements.

XML

Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Summarized financial information concerning our segments is shown in the following table (in thousands):

	Reservoir Description		Production Enhancement		Corporate & Other 1			Consolidated
Three Months Ended June 30, 2017
Revenue from unaffiliated clients	$	104,313	$	59,590	$	—		$	163,903
Inter-segment revenue	47		249		(296		)	—
Segment operating income (loss)	18,670		10,765		(28		)	29,407
Total assets (at end of period)	319,433		206,096		58,229			583,758
Capital expenditures	2,098		769		46			2,913
Depreciation and amortization	4,528		1,256		518			6,302
Three Months Ended June 30, 2016
Revenue from unaffiliated clients	$	108,278	$	39,791	$	—		$	148,069
Inter-segment revenue	304		384		(688		)	—
Segment operating income (loss)	20,139		247		(159		)	20,227
Total assets (at end of period)	323,623		196,339		52,144			572,106
Capital expenditures	2,274		160		10			2,444
Depreciation and amortization	4,631		1,501		619			6,751
Six Months Ended June 30, 2017
Revenue from unaffiliated clients	$	209,208	$	112,502	$	—		$	321,710
Inter-segment revenue	221		450		(671		)	—
Segment operating income (loss)	34,610		18,160		(184		)	52,586
Total assets	319,433		206,096		58,229			583,758
Capital expenditures	4,675		3,789		898			9,362
Depreciation and amortization	9,148		2,542		1,039			12,729
Six Months Ended June 30, 2016
Revenue from unaffiliated clients	$	215,702	$	86,014	$	—		$	301,716
Inter-segment revenue	1,046		604		(1,650		)	—
Segment operating income (loss)	38,737		4,497		(67		)	43,167
Total assets	323,623		196,339		52,144			572,106
Capital expenditures	4,356		538		408			5,302
Depreciation and amortization	9,267		3,089		1,242			13,598

XML

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods	$ 22,506	$ 21,635
Parts and materials	11,762	11,185
Work in progress	1,330	900
Total inventories	$ 35,598	$ 33,720

XML

Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity	$ 400,000
Line of Credit Facility, Extension Capacity	50,000
Line of credit facility, maximum borrowing capacity	450,000
Performance bonds under credit facility	21,700
Line of credit facility, remaining borrowing capacity	293,300
Performance bonds	13,400
Long-term Debt, Excluding Current Maturities	233,739	$ 216,488
Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	150,000	150,000
Face amount	150,000
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 85,000	68,000
Maturity date	Aug. 29, 2019
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.01%
Face amount	$ 75,000
Maturity date	Sep. 30, 2021
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.11%
Face amount	$ 75,000
Maturity date	Sep. 30, 2023
Total debt [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 235,000	218,000
Debt issuance costs [Domain]
Debt Instrument [Line Items]
Debt acquisition costs	$ (1,261)	$ (1,512)
Minimum [Member]
Debt Instrument [Line Items]
Basis Spread on Variable Rate	1.25%
Maximum [Member]
Debt Instrument [Line Items]
Basis Spread on Variable Rate	2.00%
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	$ 50,000

XML

Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 366	$ 375	$ 741	$ 733
Interest cost	268	342	543	669
Expected return on plan assets	(228)	(287)	(460)	(562)
Amortization of prior service cost	19	19	38	38
Amortization of actuarial loss	110	148	220	296
Net periodic pension cost	$ 497	$ 559	1,006	$ 1,098
Contributions by employer			$ 1,600

XML

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Equity [Abstract]
Treasury shares, acquired, tax burden	3,676		14,428
Treasury shares, acquired, value, tax burden	$ 400		$ 1,700
Treasury Stock, Shares, Acquired	58,676		69,428
Treasury Stock, Value, Acquired, Cost Method	$ 6,100		$ 7,400
Treasury Stock, Value	$ 82,708		$ 82,708		$ 80,773
Stock Issued During Period, Shares, Treasury Stock Reissued	11,180		46,402
Cash dividends per share (in dollars per share)	$ 0.55	$ 0.55	$ 1.10	$ 1.10
Dividends declared (in dollars per share)	$ 0.55

XML

Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			155,297
Stock based-awards			11,562
Repurchase of common shares			(7,388)
Dividends paid			(48,590)
Non-controlling interest dividends			(27)
Amortization of deferred pension costs, net of tax			136
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	$ (90)	$ (372)	71	$ (1,261)
Net income	22,709	16,535	40,391	31,652
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	19	$ (89)	43	$ (54)
Ending balance	151,452		151,452
Common Shares [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,148
Stock based-awards			0
Repurchase of common shares			0
Dividends paid			0
Non-controlling interest dividends			0
Amortization of deferred pension costs, net of tax			0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			0
Net income			0
Ending balance	1,148		1,148
Additional Paid-In Capital [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			84
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			52,850
Stock based-awards			6,109
Repurchase of common shares			0
Dividends paid			0
Non-controlling interest dividends			0
Amortization of deferred pension costs, net of tax			0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			0
Net income			0
Ending balance	59,043		59,043
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			(84)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			187,957
Stock based-awards			0
Repurchase of common shares			0
Dividends paid			(48,590)
Non-controlling interest dividends			0
Amortization of deferred pension costs, net of tax			0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			0
Net income			40,348
Ending balance	179,631		179,631
Accumulated Other Comprehensive Income (Loss) [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(9,828)
Stock based-awards			0
Repurchase of common shares			0
Dividends paid			0
Non-controlling interest dividends			0
Amortization of deferred pension costs, net of tax			136
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			71
Net income			0
Ending balance	(9,621)		(9,621)
Treasury Stock [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(80,773)
Stock based-awards			5,453
Repurchase of common shares			(7,388)
Dividends paid			0
Non-controlling interest dividends			0
Amortization of deferred pension costs, net of tax			0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			0
Net income			0
Ending balance	(82,708)		(82,708)
Non-Controlling Interests [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			3,943
Stock based-awards			0
Repurchase of common shares			0
Dividends paid			0
Non-controlling interest dividends			(27)
Amortization of deferred pension costs, net of tax			0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			0
Ending balance	$ 3,959		$ 3,959

XML

Equity (Comprehensive Income) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Prior service cost	$ 572	$ 600
Unrecognized net actuarial loss	(9,605)	(9,769)
Derivative, Fair Value, Net	(588)	(659)
Total accumulated other comprehensive income (loss)	$ (9,621)	$ (9,828)

XML

Earnings per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Weighted average basic common shares outstanding	44,164	43,297	44,162	42,839
Performance shares (in shares)	148	127	143	105
Restricted stock (in shares)	62	81	55	64
Weighted average diluted common and potential common shares outstanding	44,374	43,505	44,360	43,008

XML

Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	$ (24)	$ (47)	$ 849	$ (51)
Total other (income) expense, net	(24)	(47)	849	(51)
Other Income [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	(54)	(124)	(43)	(252)
Rents and Royalties Income (Loss) [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	(109)	(98)	(231)	(199)
Severance and other charges [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	0	0	1,145	0
Investment Income [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	(96)	(136)	(175)	(324)
gain loss on sale of asset [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	(123)	(122)	(302)	(488)
Foreign Currency Gain (Loss) [Member]
Income Statement Location [Line Items]
Other Nonoperating Income (Expense)	$ 358	$ 433	$ 455	$ 1,212

XML

Other (Income) Expense, Net (Foreign Currency (Gain ) Loss by Currency) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Nonoperating Income (Expense)	$ 24	$ 47	$ (849)	$ 51
Foreign exchange	358	433	455	1,212
Angola, Kwanza
Foreign exchange	(4)	43	(3)	505
British Pound [Member]
Foreign exchange	(74)	247	(55)	475
Euro [Member]
Foreign exchange	732	(40)	835	170
Mexican Peso [Member]
Foreign exchange	11	114	(28)	136
Russian Ruble [Member]
Foreign exchange	(141)	(57)	(125)	(93)
Other Currencies Net [Member]
Foreign exchange	$ (166)	$ 126	$ (169)	$ 19

XML

Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Contingency [Line Items]
Release of reserves for uncertain tax positions		$ 900
Change in income tax expense	$ 3,300
Effective income tax rate	15.00%	3.90%	14.60%	13.80%
Income tax expense	$ 4,006	$ 671	$ 6,885	$ 5,060

XML

Derivative Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 936	$ 1,046
Derivative, Notional Amount	50,000
Interest Rate Swap No. 1 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	833	835
Derivative, Notional Amount	$ 25,000
Derivative, Fixed Interest Rate	2.50%
Derivative, Maturity Date	Aug. 29, 2024
Interest Rate Swap No. 2 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 103	211
Derivative, Notional Amount	$ 25,000
Derivative, Fixed Interest Rate	1.73%
Derivative, Maturity Date	Aug. 29, 2019
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap No. 1 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 833	835
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap No. 2 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 103	$ 211

XML

Derivative Instruments Long-term debt (Details) $ in Millions	Jun. 30, 2017 USD ($)
Debt Disclosure in Derivatives Footnote [Abstract]
Long-term Debt, Percentage Bearing Variable Interest, Amount	$ 35
Long-term Debt, Percentage Bearing Fixed Interest, Amount	$ 200

XML

Derivative Instruments Derivative gain loss table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 140	$ 211	$ 307	$ 424
Interest Rate Swap No. 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	94	130	202	261
Interest Rate Swap No. 2 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 46	$ 81	$ 105	$ 163

XML

Financial Instruments FInancial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 26,788	$ 25,530
Deferred Compensation Liability, Current and Noncurrent	33,963	31,672
Financial and Nonfinancial Liabilities, Fair Value Disclosure	34,899	32,718
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Deferred Compensation Liability, Current and Noncurrent	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	26,788	25,530
Deferred Compensation Liability, Current and Noncurrent	33,963	31,672
Financial and Nonfinancial Liabilities, Fair Value Disclosure	34,899	32,718
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Deferred Compensation Liability, Current and Noncurrent	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Interest Rate Swap No. 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	103	211
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	103	211
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	833	835
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	833	835
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 0	$ 0

XML

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	$ 163,903	$ 148,069	$ 321,710	$ 301,716
Inter-segment revenue	0	0	0	0
Segment operating income (loss)	29,407	20,227	52,586	43,167
Total assets (at end of period)	583,758	572,106	583,758	572,106	$ 573,052
Capital expenditures	2,913	2,444	9,362	5,302
Depreciation and amortization	6,302	6,751	12,729	13,598
Operating Segments [Member] | Reservoir Description [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	104,313	108,278	209,208	215,702
Inter-segment revenue	47	304	221	1,046
Segment operating income (loss)	18,670	20,139	34,610	38,737
Total assets (at end of period)	319,433	323,623	319,433	323,623
Capital expenditures	2,098	2,274	4,675	4,356
Depreciation and amortization	4,528	4,631	9,148	9,267
Operating Segments [Member] | Production Enhancement [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	59,590	39,791	112,502	86,014
Inter-segment revenue	249	384	450	604
Segment operating income (loss)	10,765	247	18,160	4,497
Total assets (at end of period)	206,096	196,339	206,096	196,339
Capital expenditures	769	160	3,789	538
Depreciation and amortization	1,256	1,501	2,542	3,089
Corporate & Other [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	0	0	0	0
Inter-segment revenue	(296)	(688)	(671)	(1,650)
Segment operating income (loss)	(28)	(159)	(184)	(67)
Total assets (at end of period)	58,229	52,144	58,229	52,144
Capital expenditures	46	10	898	408
Depreciation and amortization	$ 518	$ 619	$ 1,039	$ 1,242