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3
Financial statements
BP Annual Report and Accounts 2008
Supplementary information on oil and natural gas
Movements in estimated net proved reserves continued
2008
Natural gasabillion cubic feet
Rest of Rest of Asia
UK Europe US Americas Pacific Africa Russia Other Total
Subsidiaries
At 1 January 2008
Developed 2,049 63 10,670 3,683 1,822 990 583 19,860
Undeveloped 553 410 4,705 8,394 4,817 1,410 981 21,270
2,602 473 15,375 12,077 6,639 2,400 – 1,564 41,130
Changes attributable to
Revisions of previous estimates 23 (8) (2,063) (405) 326 142 35 (1,950)
Purchases of reserves-in-place 183 – 183
Discoveries and extensions 549 1,073 82 37 1,741
Improved recovery 77 9 1,322 175 56 6 54 1,699
Productionb(298) (11) (834) (1,040) (264) (198) (150) (2,795)
Sales of reserves-in-place (3) – (3)
(198) (10) (843) (200) 118 32 (24) (1,125)
At 31 December 2008c
Developed 1,822 61 9,059 3,975 2,482 1,050 507 18,956
Undeveloped 582 402 5,473 7,902 4,275 1,382 – 1,033 21,049
2,404 463 14,532 11,877 6,757 2,432 – 1,540 40,005
Equity-accounted entities (BP share)
At 1 January 2008
Developed 1,478 39 808 148 2,473
Undeveloped 831 37 353 76 1,297
2,309 76 1,161 224 3,770
Changes attributable to
Revisions of previous estimates (96) (2) 182 1,273 1,357
Purchases of reserves-in-place – –– 3 ––––
Discoveries and extensions 192 – – – – 192
Improved recovery 301 11 312
Productionb (188) (12) (221) (10) (431)
Sales of reserves-in-place – –––––
212 (3) 182 1,052 (10) 1,433
At 31 December 2008d
Developed 1,498 37 1,560 139 3,234
Undeveloped 1,023 36 182 653 75 1,969
2,521 73 182 2,213 214 5,203
aProved reserves exclude royalties due to others, whether payable in cash or in kind where the royalty owner has a direct interest in the underlying production and the option and ability to make lifting and
sales arrangements independently.
bIncludes 193 billion cubic feet of natural gas consumed in operations, 149 billion cubic feet in subsidiaries, 44 billion cubic feet in equity-accounted entities and excludes 16.9 billion cubic feet of produced
non-hydrocarbon components which meet regulatory requirements for sales.
cIncludes 3,108 billion cubic feet of natural gas in respect of the 30% minority interest in BP Trinidad and Tobago LLC.
dIncludes 131 billion cubic feet of natural gas in respect of the 5.92% minority interest in TNK-BP.
183