Parker Drilling Co North America S-4 Registration of securities issued in business combination transactions

EXHIBIT 12.1

RATIO OF EARNINGS TO FIXED CHARGES

     The following table sets forth the historical ratios of earnings to fixed charges for the periods indicated. For more information on our consolidated ratios of earnings to fixed charges, see our Annual Report on Form 10-K for the year ended December 31, 2009, and our Quarterly Report on Form 10-Q for the quarter ended March 31, 2010.

	Three Months Ended
	March 31,					Year Ended December 31,
	2010			2009		2009		2008		2007		2006		2005
Income (loss) from continuing operations before income taxes, minority interest and income (loss) from equity investees	$	(3,610	)	$	4,852	$	9,827	$	30,775	$	166,842	$	117,435	$	70,228
Plus fixed charges:
Interest expense on indebtedness		6,093			7,613		27,460		27,597		25,809		30,215		40,634
Capitalized interest		2,492			1,148		5,976		5,087		6,159		3,658		—
Amortization of borrowing expenses, premiums and discounts		639			453		1,990		1,669		1,408		1,383		1,479
Amortization of capitalized interest		481			483		2,128		1,712		799		471		481
Rental expense under operating leases deemed to be representative of the interest factor		255			194		875		1,141		906		1,705		1,636
Adjusted income (loss) from continuing operations	$	6,350		$	14,743	$	48,256	$	67,981	$	201,923	$	154,867	$	114,458
Fixed charges		9,960			9,891		38,429		37,206		35,081		35,432		44,230
Ratio of earnings to fixed charges		0.6x			1.5x		1.3x		1.8x		5.8x		4.1x		2.6x

     The ratio of earnings to fixed charges is computed by dividing fixed charges into earnings, as defined. Earnings include income (loss) from continuing operations before income taxes, minority interest and income (loss) from equity investees, plus fixed charges. Fixed charges include interest expense and the interest factor of lease obligations.