Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Schedule II Valuation and Qualifying Accounts

Schedule II Valuation and Qualifying Accounts

Schedule II

Kosmos Energy Ltd.

Valuation and Qualifying Accounts

For the Years Ended December 31, 2011, 2010 and 2009

			Additions
	Balance January 1,		Charged to Costs and Expenses			Charged To Other Accounts		Deductions From Reserves		Balance December 31,
Description
2011
Allowance for doubtful receivables	$	39,782	$	(39,782	)	$	—	$	—	$	—
Allowance for deferred tax asset	$	30,140	$	19,362		$	—	$	—	$	49,502
2010
Allowance for doubtful receivables	$	—	$	39,782		$	—	$	—	$	39,782
Allowance for deferred tax asset	$	33,749	$	(3,609	)	$	—	$	—	$	30,140
2009
Allowance for doubtful receivables	$	—	$	—		$	—	$	—	$	—
Allowance for deferred tax asset	$	19,131	$	14,618		$	—	$	—	$	33,749

        Schedules other than Schedule I and Schedule II have been omitted because they are not applicable or the required information is presented in the consolidated financial statements or the notes to consolidated financial statements.