Continuity of Gross Proved Reserves 1

  Canada US UK Scandinavia Indonesia Other
Southeast
Asia
Other Total
Oil and liquids (mmbbls)                
Total proved                
Proved reserves at December 31, 2007 152.8 387.2 67.3 35.7 53.5 52.8 749.3
Discoveries, additions and extensions 13.7 15.0 8.3 0.4 0.2 (0.7) 36.9
Purchase of reserves 0.3 0.3
Sale of reserves (0.3) (17.5) (1.7) (19.5)
Net revisions and transfers 2.6 (133.7) (5.3) 0.6 (5.6) 0.6 (140.8)
2008 Production (14.8) (34.3) (12.0) (4.3) (8.7) (7.6) (81.7)
Proved reserves at December 31, 2008 154.3 216.7 56.6 32.4 39.4 45.1 544.5
Discoveries, additions and extensions 4.8 5.2 1.1 (1.7) 7.4 12.2 29.0
Purchase of reserves 0.2 1.0 1.2
Sale of reserves (45.7) (0.2) (4.0) (3.8) (53.7)
Net revisions and transfers 77.0 14.5 1.1 3.8 (8.6) 87.8
2009 Production (12.6) (31.2) (12.3) (4.2) (10.7) (5.9) (76.9)
Proved reserves at December 31, 2009 101.0 267.5 55.9 28.6 39.9 39.0 531.9
Discoveries, additions and extensions 5.0 3.4 6.8 9.7 3.4 3.0 2.2 33.5
Purchase of reserves 1.2 3.5 4.7
Sale of reserves (18.5) (0.2) (0.7) (19.4)
Net revisions and transfers 0.2 18.0 1.8 0.9 6.7 0.2 27.8
2010 Production (8.4) (0.1) (27.0) (14.2) (4.3) (9.7) (5.1) (68.8)
Proved reserves at December 31, 2010        79.3 4.3 265.3 53.2 32.1 39.9 35.6 509.7
Proved developed                
December 31, 2007 146.2 344.5 25.6 28.2 31.3 48.2 624.0
December 31, 2008 143.4 173.3 24.8 26.0 24.9 35.2 427.6
December 31, 2009 92.6 197.1 26.1 23.2 31.2 23.7 393.9
December 31, 2010        74.6 0.9 211.9 21.6 21.4 30.8 19.6 380.8
Natural gas (bcf)                
Total proved                
Proved reserves at December 31, 2007 2,565.7 126.5 100.2 78.9 1,981.9 387.0 224.0 5,464.2
Discoveries, additions and extensions 308.2 33.9 12.4 12.1 1.3 27.0 0.4 395.3
Purchase of reserves 15.3 2.8 18.1
Sale of reserves (65.3) (65.3)
Net revisions and transfers (30.3) 1.4 (3.2) 17.8 (2.5) (0.8) (17.6)
2008 Production (286.6) (26.7) (13.8) (6.9) (97.2) (24.9) (0.2) (456.3)
Proved reserves at December 31, 2008 2,507.0 137.9 95.6 101.9 1,886.0 386.6 223.4 5,338.4
Discoveries, additions and extensions 201.2 544.5 (0.5) 88.6 27.9 861.7
Purchase of reserves 15.9 8.7 24.6
Sale of reserves (137.6) (1.5) (67.0) (220.5) (426.6)
Net revisions and transfers (75.3) 0.1 2.9 12.7 14.8 (11.1) (1.0) (56.9)
2009 Production (262.7) (30.3) (7.0) (21.1) (120.6) (26.7) (0.1) (468.5)
Proved reserves at December 31, 2009 2,248.5 650.7 24.5 93.0 1,877.5 376.7 1.8 5,272.7
Discoveries, additions and extensions 286.4 874.7 0.1 6.7 21.2 (37.4) 1,151.7
Purchase of reserves 23.0 60.7 83.7
Sale of reserves (867.3) (7.3) (1.8) (876.4)
Net revisions and transfers 33.2 12.5 4.9 12.1 (3.0) 44.6 104.3
2010 Production (203.6) (80.5) (5.7) (32.2) (141.2) (35.9) (499.1)
Proved reserves at December 31, 2010        1,497.2 1,473.1 23.8 79.6 1,815.2 348.0 5,236.9
Proved developed                
December 31, 2007 2,125.6 111.4 86.7 7.0 1,197.6 58.2 1.1 3,587.6
December 31, 2008 2,066.8 117.9 65.5 99.0 1,348.9 199.0 1.2 3,898.3
December 31, 2009 1,840.9 197.9 22.4 91.2 1,231.6 320.8 0.8 3,705.6
December 31, 2010        1,134.7 687.5 22.0 73.3 1,083.1 281.3 3,281.9
  1. Talisman’s estimates of its reserves as at December 31, 2009 and December 31, 2010 are based on average pricing methodology. Talisman’s estimates of its reserves for years ended prior to December 31, 2009 were based on a single-day end-of-year price basis (using existing economic and operating conditions). For definitions of reserves, see the notes found in this Annual Report.