Exhibit 12.1

     For purposes of calculating the ratio of earnings to fixed charges, earnings consist of pretax income from continuing operations less undistributed earnings from unconsolidated affiliates (net of dividends) plus amortization of capitalized interest and fixed charges (excluding capitalized interest). Fixed charges consist of interest incurred (whether expensed or capitalized), amortization of debt expense, and that portion of rental expense on operating leases deemed to be the equivalent of interest. The following table sets forth Core Laboratories N.V.’s ratio of earnings to fixed charges for each of the periods indicated:

CORE LABORATORIES AND SUBSIDIARIES
COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES
(In thousands, except ratio amounts)

													Nine months ended
	Year ended December 31,												September 30,
	2001		2002			2003		2004			2005		2005		2006
Fixed Charges:
Interest on debt and capitalized leases		7,921,000		7,603,000			7,669,000		8,275,000			8,277,000		6,034,000		4,785,000
Amortization of debt discount and expense		544,000		247,000			168,000		255,000			685,000		228,000		86,000
Interest element of rentals		2,900,461		2,538,049			3,054,580		3,285,846			3,173,122		2,284,196		2,607,269
Total Fixed Charges		11,365,461		10,388,049			10,891,580		11,815,846			12,135,122		8,546,196		7,478,269
Earnings:
Consolidated net income		20,632,000		(9,062,000	)		18,700,000		12,290,000			31,211,000		26,462,000		57,489,000
Addback:
Extraordinary charge/Cumm change in Acctg Principle		—		15,540,000			—		—			—		—		—
Loss from discontinued operation		2,810,000		3,116,000			2,092,000		15,732,000			506,000		—		—
Consolidated provision for income taxes		9,103,000		5,782,000			7,457,000		10,217,000			14,925,000		11,834,000		24,521,000
Fixed charges less interest capitalized		11,365,461		10,388,049			10,891,580		11,815,846			12,135,122		8,546,196		7,478,269
Subtotal Earnings		43,910,461		25,764,049			39,140,580		50,054,846			58,777,122		46,842,196		89,488,269
Less: Undistributed earning of less-than-50% owned affiliates		150,000		161,000			52,000		(265,000	)		36,000		44,000		(53,000	)
Total Earnings		43,760,461		25,603,049			39,088,580		50,319,846			58,741,122		46,798,196		89,541,269
Ratio (Earnings Divided by Fixed Charges)		3.9		2.5			3.6		4.3			4.8		5.5		12.0