Continuity of Net 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 123.9 385.3 67.2 13.6 30.1 27.6 647.7
Discoveries, additions and extensions 12.1 15.0 8.3 (0.3) (0.3) 34.8
Purchase of reserves 0.3 0.3
Sale of reserves (0.3) (17.5) (1.6) (19.4)
Net revisions and transfers 7.4 (133.2) (5.3) 4.2 2.0 3.1 (121.8)
2008 Production (11.9) (34.2) (12.0) (1.7) (4.7) (4.1) (68.6)
Proved reserves at December 31, 2008 131.5 215.4 56.6 16.1 27.1 26.3 473.0
Discoveries, additions and extensions 4.0 5.2 1.1 (0.5) 5.3 6.5 21.6
Purchase of reserves 0.1 0.7 0.8
Sale of reserves (39.0) (0.2) (4.0) (3.7) (46.9)
Net revisions and transfers 2.7 76.8 14.5 (1.8) 3.8 (4.7) 91.3
2009 Production (9.9) (31.1) (12.3) (1.8) (7.6) (3.4) (66.1)
Proved reserves at December 31, 2009 89.4 266.1 55.9 12.7 28.6 21.0 473.7
Discoveries, additions and extensions 4.7 2.5 6.8 9.7 1.4 2.5 1.0 28.6
Purchase of reserves 0.9 1.5 2.4
Sale of reserves (15.1) (0.2) (0.5) (15.8)
Net revisions and transfers (2.4) 0.1 18.0 1.8 (0.8) 0.6 (0.2) 17.1
2010 Production (6.6) (0.1) (27.0) (14.2) (2.0) (6.1) (2.4) (58.4)
Proved reserves at December 31, 2010        70.0 3.2 263.9 53.2 12.8 25.6 18.9 447.6
Proved developed                
December 31, 2007 118.9 342.6 25.6 10.7 18.9 25.4 542.1
December 31, 2008 122.0 172.0 24.8 13.5 17.7 20.2 370.2
December 31, 2009 82.1 196.0 26.1 11.0 21.2 13.0 349.4
December 31, 2010        65.6 0.7 210.6 21.6 8.6 18.6 9.8 335.5
Natural gas (bcf)                
Total proved                
Proved reserves at December 31, 2007 2,087.1 109.0 100.2 78.9 1,359.0 245.5 223.3 4,203.0
Discoveries, additions and extensions 249.7 29.4 12.4 12.1 (30.3) 20.2 0.4 293.9
Purchase of reserves 11.9 2.4 14.3
Sale of reserves (55.2) (55.2)
Net revisions and transfers 113.3 1.3 (3.2) 17.8 143.0 42.8 (0.7) 314.3
2008 Production (237.6) (22.9) (13.8) (6.9) (64.0) (18.8) (0.2) (364.2)
Proved reserves at December 31, 2008 2,169.2 119.2 95.6 101.9 1,407.7 289.7 222.8 4,406.1
Discoveries, additions and extensions 185.6 474.6 (0.5) 62.8 25.3 747.8
Purchase of reserves 14.2 7.5 21.7
Sale of reserves (115.8) (1.4) (67.0) (220.0) (404.2)
Net revisions and transfers 28.2 2.9 12.7 (19.5) (33.3) (1.0) (10.0)
2009 Production (238.4) (26.2) (7.0) (21.1) (84.4) (20.3) (0.1) (397.5)
Proved reserves at December 31, 2009 2,043.0 566.2 24.5 93.0 1,374.1 261.4 1.7 4,363.9
Discoveries, additions and extensions 263.7 738.6 0.1 6.7 8.1 (22.6) 994.6
Purchase of reserves 17.5 42.4 59.9
Sale of reserves (772.5) (5.8) (1.6) (779.9)
Net revisions and transfers 11.2 10.3 4.9 12.1 (57.2) 14.3 (0.1) (4.5)
2010 Production (190.9) (68.9) (5.7) (32.2) (98.2) (27.3) (423.2)
Proved reserves at December 31, 2010        1,354.5 1,257.9 23.8 79.6 1,269.2 225.8 4,210.8
Proved developed                
December 31, 2007 1,725.0 95.7 86.7 7.0 811.1 44.4 1.0 2,770.9
December 31, 2008 1,785.8 101.8 65.5 99.0 1,022.2 149.0 1.2 3,224.5
December 31, 2009 1,663.5 171.1 22.4 91.2 915.2 225.5 0.8 3,089.7
December 31, 2010        1,011.4 584.9 22.0 73.3 763.7 187.2 2,642.5
  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 of this Annual Report.