BP 2009 Annual Report Download - page 190

Movements in estimated net proved reserves continued
8
22
–
188
BP Annual Report and Accounts 2009
Supplementary information on oil and natural gas (unaudited)
billion cubic feet
Natural gasa2007
Europe North South Africa Asia Australasia Total
America America
Rest of
Rest of North Rest of
UK Europe US America Russia Asia
Subsidiaries
At 1 January 2007
Developed 1,968 242 10,438 627 3,305 1,032 – 808 882 19,302
Undeveloped 825 56 4,660 310 8,884 1,675 – 1,781 4,675 22,866
2,793 298 15,098 937 12,189 2,707 – 2,589 5,557 42,168
Changes attributable to
Revisions of previous estimates 93 (37) 744 (72) (204) (146) – (21) 140 497
Improved recovery 15 1 326 32 – 9 – 100 16 499
Purchases of reserves-in-place – – 23 ––––109 – 132
Discoveries and extensions – 293 95 237 12 17 – – 88 742
Productionb(299) (14) (879) (98) (949) (187) – (238) (137) (2,801)
Sales of reserves-in-place – (68) (32) (7) –––––(107)
(191) 175 277 92 (1,141) (307) – (50) 107 (1,038)
At 31 December 2007c
Developed 2,049 63 10,670 608 3,075 990 – 1,270 1,135 19,860
Undeveloped 553 410 4,705 421 7,973 1,410 – 1,269 4,529 21,270
2,602 473 15,375 1,029 11,048 2,400 – 2,539 5,664 41,130
Equity-accounted entities (BP share)e
At 1 January 2007
Developed ––––1,460 – 1,087 222 – 2,769
Undeveloped ––––735 – 184 75 – 994
––––2,195 – 1,271 297 – 3,763
Changes attributable to
Revisions of previous estimates ––––73 –61 9 –143
Improved recovery ––––195 – – 16 – 211
Purchases of reserves-in-place ––––––8 ––
Discoveries and extensions ––––22 ––––
Productionb––––(176) – (179) (22) – (377)
Sales of reserves-in-place –––––––––
––––114 – (110) 3 – 7
At 31 December 2007d
Developed ––––1,478 – 808 187 – 2,473
Undeveloped ––––831 – 353 113 – 1,297
––––2,309 – 1,161 300 – 3,770
Total subsidiaries and equity-accounted entities (BP share)
At 1 January 2007
Developed 1,968 242 10,438 627 4,765 1,032 1,087 1,030 882 22,071
Undeveloped 825 56 4,660 310 9,619 1,675 184 1,856 4,675 23,860
2,793 298 15,098 937 14,384 2,707 1,271 2,886 5,557 45,931
At 31 December 2007
Developed 2,049 63 10,670 608 4,553 990 808 1,457 1,135 22,333
Undeveloped 553 410 4,705 421 8,804 1,410 353 1,382 4,529 22,567
2,602 473 15,375 1,029 13,357 2,400 1,161 2,839 5,664 44,900
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 202 billion cubic feet of natural gas consumed in operations, 161 billion cubic feet in subsidiaries, 41 billion cubic feet in equity-accounted entities and excludes 10.9 billion cubic feet of
produced non-hydrocarbon components which meet regulatory requirements for sales.
cIncludes 3,211 billion cubic feet of natural gas in respect of the 30% minority interest in BP Trinidad and Tobago LLC.
dIncludes 68 billion cubic feet of natural gas in respect of the 5.88% minority interest in TNK-BP.
eVolumes of equity-accounted entities include volumes of equity-accounted investments of those entities.