Exhibit 12.1

WHITING PETROLEUM CORPORATION AND SUBSIDIARIES
RATIO OF EARNINGS TO FIXED CHARGES
(dollars in thousands)

	Six Months
	Ended			Year Ended December 31,
	June 30, 2010			2009			2008			2007			2006			2005
Fixed charges:
Interest expensed	$	25,600		$	53,582		$	59,010		$	65,977		$	66,265		$	35,245
Interest capitalized		783			3,406			3,129			3,664			556			—
Amortized premiums, discounts and capitalized expenses related to indebtedness		5,724			11,026			6,068			6,527			7,224			6,802
Estimate of interest within rental expense		326			603			431			424			386			298
Total fixed charges		32,433			68,617			68,638			76,592			74,431			42,345
Earnings:
Income (loss) before income taxes	$	341,984		$	(162,835	)	$	408,820		$	207,162		$	233,272		$	196,098
Income from equity investees		(643	)		(1,581	)		(1,625	)		(1,365	)		(282	)		(409	)
Fixed charges (above)		32,433			68,617			68,638			76,592			74,431			42,345
Amortization of capitalized interest		559			776			463			97			41			41
Distributed income from equity investees		673			1,780			1,775			928			987			657
Interest capitalized		(783	)		(3,406	)		(3,129	)		(3,664	)		(556	)		—
Total earnings	$	374,223		$	(96,649	)	$	474,942		$	279,750		$	307,893		$	238,732
Ratio of earnings to fixed charges (unaudited) (1)		11.54			—			6.92			3.65			4.14			5.64

(1) For the year ended December 31, 2009, earnings were inadequate to cover fixed charges, and the ratio of earnings to fixed charges therefore has not been presented for that period. The coverage deficiency necessary for the ratio of earnings to fixed charges to equal 1.00x (one-to-one coverage) was $165.3 million for the year ended December 31, 2009.