Exhibit 12.1

Complete Production Services, Inc.
Calculation of Ratio of Earnings to Fixed Charges, as Defined
Updated May 25, 2007

	Year			Year			Year			Year			Year			Quarter
	Ended			Ended			Ended			Ended			Ended			Ended
	12/31/02			12/31/03			12/31/04			12/31/05			12/31/06			3/31/07
Earnings:
Pre-tax income before M.I.		(1,354	)		1,375			26,465			84,420			215,122			76,790
Fixed charges		1,482			3,141			8,078			25,138			44,336			16,452
Amort. of capitalized interest		—			—			—			—			17	(c)		29	(c)
Less: interest capitalized		—			—			—			—			(2,058	)		(427	)
Less: minority interest		—			(247	)		(4,705	)		(384	)		49			(261	)
Total earnings		128			4,269			29,838			109,174			257,467			92,583
FixedCharges:
Interest expensed		1,260			2,683			7,218			23,875			40,308			15,108
Interest capitalized		—			—			—			—			2,058			427
Deferred financing fees		101	(b)		212	(b)		465			585			451			517
Interest in rent expense		121	(a)		246			395			678			1,519			400	(d)
Total fixed charges		1,482			3,141			8,078			25,138			44,336			16,452
Ratio of earnings to FC		0.09			1.36			3.69			4.34			5.81			5.63

(a)	Calculated at 1/2 of 2003 actuals per audited financial statements for IPS (IPSL was acquired by Sabre in July 2002—thus, the majority of the operating lease arrangements would have only been in place for approx. half of the year).
(b)	Projected based upon 2004 actual expense and status of accumulated amortization associated with deferred financing fees on IPS’ books as of that date. Total IPS accumulated amortization at 12/31/04 was $525k, of which $212k related to 2004. A similar amount was allocated to 2003 with the remainder allocated to 2002.
(c)	Total capitalized interest assuming a 20 year life (drilling rigs) and assuming amortization for the applicable periods.
(d)	Calculated as actual 2006 rent expense at 7.9% (approx. effective annual interest rate of 7.84%) for three months.