Schedule 2 – Summary of Proved Natural Gas Reserves Based on Average Prices for 2009 – 2012


(Billions of cubic feet)	Total			United States			Canada			Malaysia			United Kingdom
Proved developed and undeveloped natural gas reserves:
December 31, 2009		754.6			89.3			124.7			511.8			28.8
Revisions of previous estimates		15.2			6.6			15.2			(11.2	)		4.6
Improved recovery		(1.0	)		0.0			0.0			(1.0	)		0.0
Extensions and discoveries		220.5			14.3			194.2			12.0			0.0
Purchases of properties		24.0			0.0			24.0			0.0			0.0
Production		(130.2	)		(19.4	)		(31.2	)		(77.6	)		(2.0	)

December 31, 2010		883.1			90.8			326.9			434.0			31.4
Revisions of previous estimates		12.6			(6.3	)		59.4			(32.5	)		(8.0	)
Improved recovery		13.8			0.0			0.0			14.8			(1.0	)
Extensions and discoveries		363.5			31.1			321.5			10.9			0.0
Production		(166.9	)		(17.2	)		(68.9	)		(79.4	)		(1.4	)

December 31, 2011		1,106.1			98.4			638.9			347.8			21.0
Revisions of previous estimates		20.2			16.5			(37.2	)		41.4			(0.5	)
Improved recovery		7.2			0.0			0.0			7.2			0.0
Extensions and discoveries		173.5			107.2			25.8			40.5			0.0
Purchases of properties		9.4			7.0			2.4			0.0			0.0
Production		(179.4	)		(19.4	)		(79.5	)		(79.3	)		(1.2	)

December 31, 2012		1,137.0			209.7			550.4			357.6			19.3

Proved developed natural gas reserves:
December 31, 2009		401.6			73.2			89.7			209.9			28.8
December 31, 2010		586.0			67.0			210.1			277.5			31.4
December 31, 2011		711.6			58.2			427.1			210.5			15.8
December 31, 2012		706.0			78.8			415.8			197.3			14.1

Proved undeveloped natural gas reserves:
December 31, 2009		353.0			16.1			35.0			301.9			0.0
December 31, 2010		297.1			23.8			116.8			156.5			0.0
December 31, 2011		394.5			40.2			211.8			137.3			5.2
December 31, 2012		431.0			130.9			134.6			160.3			5.2

Note:

All natural gas reserves included in the table above are from consolidated subsidiaries and proportionately consolidated joint ventures. The Company has no proved natural gas reserves attributable to investees accounted for by the equity method.

2012 Comments for Proved Natural Gas Reserves Changes

Revisions of previous estimates – The positive proved natural gas reserves revisions in the U.S. during 2012 were primarily caused by better well performance for certain fields in the Gulf of Mexico. The negative revision in Canada was mostly attributable to weaker natural gas prices that unfavorably affected economical recovery at certain wells in the Montney formation in Western Canada. A positive natural gas reserves revision in Malaysia was related to better well performance and favorable entitlement effects for gas operations offshore Sarawak.

Improved recovery – The improved recovery in 2012 in Malaysia was essentially caused by better waterflood response in certain Kikeh field reservoir sands.

Extensions and discoveries – U.S. natural gas proved reserves added were primarily in the Eagle Ford Shale due to recognition of additional offsets from expanded use of reliable technology with 80 acre downspacing in certain areas of the play, plus the initial booking of proved gas reserves for the Dalmatian field in the Gulf of Mexico. Natural gas reserves added in Canada were primarily associated with drilling performed in the Tupper area. Reserves added in Malaysia were principally associated with development drilling operations at Sarawak gas fields.

Purchases of properties – Natural gas reserves added in 2012 related to additional interests acquired during the year at the Front Runner and Thunder Hawk fields in the U.S. Gulf of Mexico and in the Seal area of Western Canada.