Segment Reporting Level 1 (Notes)

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

SEGMENT REPORTING

We operate our business in three reportable segments:  (1) Reservoir Description, (2) Production Enhancement and (3) Reservoir Management.  These business segments provide different services and utilize different technologies.

• Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples. We provide analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry.

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

• Reservoir Management: Combines and integrates information from reservoir description and production enhancement services to increase production and improve recovery of oil and gas from our clients' reservoirs.

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

(Unaudited)	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other 1			Consolidated
Three Months Ended March 31, 2012
Revenues from unaffiliated customers	$	116,106	$	96,733	$	21,352	$	—		$	234,191
Inter-segment revenues	536		468		19		(1,023		)	—
Segment operating income (loss)	32,415		33,531		7,915		45			73,906
Total assets (at end of period)	271,320		248,866		24,191		66,301			610,678
Capital expenditures	2,479		1,842		411		2,565			7,297
Depreciation and amortization	3,547		1,598		167		571			5,883
Three Months Ended March 31, 2011
Revenues from unaffiliated customers	$	107,621	$	82,098	$	17,014	$	—		$	206,733
Inter-segment revenues	369		308		359		(1,036		)	—
Segment operating income (loss)	26,438		23,262		6,664		135			56,499
Total assets (at end of period)	271,875		201,970		24,967		98,462			597,274
Capital expenditures	3,303		804		107		165			4,379
Depreciation and amortization	3,482		1,639		180		530			5,831

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