Allis-Chalmers Tubular Services POS AM Prospectus update (post-effective amendment)

Exhibit 12.1

ALLIS-CHALMERS ENERGY INC AND SUBSIDIARIES
Calculation of Ratio of Earnings to Fixed Charges

														Nine Months Ended
	Year Ended December 31,													September 30,
	2001			2002			2003		2004		2005			2005			2006
Earnings
Net income before minority interest and income taxes		(2,273	)		(3,699	)		3,640		1,723		9,007			5,676			17,099
Fixed Charges
Interest and debt expense (a)		869			2,549			3,000		3,624		4,740			3,442			12,828
Interest portion of rent expense (b)		9			30			37		58		99			74			105
Fixed Charges		878			2,579			3,037		3,682		4,839			3,516			12,933
Adjusted Earnings		(1,395	)		(1,120	)		6,677		5,405		13,846			9,192			30,032
Ratio of Earnings to fixed charges		(1.6	)x		(0.4	)x		2.2x		1.5x		2.9	x		2.6	x		2.3	x

(a)	Interest expense includes interest expense on debt and amortization of deferred finance costs and debt discount.
(b)	Interest portion of rent expense represents the portion of rental expense which we estimate as an interest component.