Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities

12 Months Ended

Dec. 31, 2012

Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities

Schedule 3 – Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities

(Millions of dollars)	United States			Canada		Malaysia		United Kingdom1			Republic of the Congo			Other		Total
Year Ended December 31, 2012
Property acquisition costs
Unproved	$	107.7			14.6		0.0		0.0			0.0			10.2		132.5
Proved		69.1			242.4		0.0		0.0			0.0			0.0		311.5
Total acquisition costs		176.8			257.0		0.0		0.0			0.0			10.2		444.0
Exploration costs2		174.5			57.0		68.8		(1.0	)		51.1			97.6		448.0
Development costs2		1,352.7			664.5		1,433.7		46.6			22.6			1.6		3,521.7
Total costs incurred		1,704.0			978.5		1,502.5		45.6			73.7			109.4		4,413.7
Charged to expense
Dry hole expense		32.3			8.0		26.1		(0.8	)		76.2			39.3		181.1
Geophysical and other costs		19.6			2.5		1.1		(0.2	)		0.6			45.4		69.0
Total charged to expense		51.9			10.5		27.2		(1.0	)		76.8			84.7		250.1
Property additions	$	1,652.1			968.0		1,475.3		46.6			(3.1	)		24.7		4,163.6
Year Ended December 31, 2011
Property acquisition costs
Unproved	$	233.8			18.5		0.0		0.0			0.0			27.0		279.3
Proved		0.0			0.0		0.0		0.0			23.5			0.0		23.5
Total acquisition costs		233.8			18.5		0.0		0.0			23.5			27.0		302.8
Exploration costs2		253.2			76.0		0.7		0.5			0.5			231.6		562.5
Development costs2		263.9			871.9		705.5		30.5			78.7			3.8		1,954.3
Total costs incurred		750.9			966.4		706.2		31.0			102.7			262.4		2,819.6
Charged to expense
Dry hole expense		0.6			50.6		0.1		0.0			18.1			181.6		251.0
Geophysical and other costs		35.9			10.2		11.0		0.5			2.9			60.2		120.7
Total charged to expense		36.5			60.8		11.1		0.5			21.0			241.8		371.7
Property additions	$	714.4			905.6		695.1		30.5			81.7			20.6		2,447.9
Year Ended December 31, 2010
Property acquisition costs
Unproved	$	129.8			78.6		0.0		0.0			0.0			34.4		242.8
Proved		0.0			22.0		0.0		0.0			0.0			0.0		22.0
Total acquisition costs		129.8			100.6		0.0		0.0			0.0			34.4		264.8
Exploration costs2		204.1			1.8		99.6		6.7			93.5			67.7		473.4
Development costs2		98.3			721.0		396.7		15.5			132.3			2.0		1,365.8
Total costs incurred		432.2			823.4		496.3		22.2			225.8			104.1		2,104.0
Charged to expense
Dry hole expense		(1.4	)		0.0		14.3		15.2			35.5			26.5		90.1
Geophysical and other costs		37.1			1.9		5.5		1.0			20.9			27.8		94.2
Total charged to expense		35.7			1.9		19.8		16.2			56.4			54.3		184.3
Property additions	$	396.5			821.5		476.5		6.0			169.4			49.8		1,919.7
1       The Company has accounted for U.K. operations as discontinued operations due to the impending sale of these operations in early 2013.
2       Includes non-cash asset retirement costs as follows:
2012
Exploration costs	$	(1.7	)		0.1		0.0		0.0			0.0			0.0		(1.6	)
Development costs		37.9			80.7		48.6		(11.5	)		17.6			0.0		173.3
	$	36.2			80.8		48.6		(11.5	)		17.6			0.0		171.7
2011
Exploration costs	$	2.0			0.3		0.0		0.0			0.0			0.0		2.3
Development costs		15.8			20.1		0.3		10.8			2.1			0.0		49.1
	$	17.8			20.4		0.3		10.8			2.1			0.0		51.4
2010
Exploration costs	$	3.4			0.0		0.0		0.0			0.0			0.0		3.4
Development costs		23.7			17.1		8.6		10.7			5.8			0.0		65.9
	$	27.1			17.1		8.6		10.7			5.8			0.0		69.3