BP 2013 Annual Report Download - page 222

Movements in estimated net proved reserves – continued
million barrels of oil equivalentb
Total hydrocarbonsa2011
Europe North
America
South
America
Africa Asia Australasia Total
UK
Rest of
Europe USc
Rest of
North
America Russia
Rest of
Asia
Subsidiaries
At 1 January 2011
Developed 608 84 3,366 10 660 600 – 491 662 6,481
Undeveloped 574 295 1,923 179 1,192 779 – 371 462 5,775
1,182 379 5,289 189 1,852 1,379 – 862 1,124 12,256
Changes attributable to
Revisions of previous estimates 28 10 27 (3) 41 (103) – (119) 55 (64)
Improved recovery 24 8 200 – 15 12 – 75 10 344
Purchases of reserves-in-place 1 – 26 2 7 – – 58 – 94
Discoveries and extensions – – 39 – 9 19 – – – 67
Productionde (66) (13) (289) (1) (153) (108) – (92) (59) (781)
Sales of reserves-in-place (36) – (97) (4) (76) (12) – (87) – (312)
(49) 5 (94) (6) (157) (192) – (165) 6 (652)
At 31 December 2011f
Developed 531 76 3,362 5 522 522 – 355 675 6,048
Undeveloped 602 308 1,833 178 1,173 665 – 342 455 5,556
1,133 384 5,195 183 1,695 1,187 – 697 1,130 11,604
Equity-accounted entities (BP share)g
At 1 January 2011
Developed – – – – 593 – 2,716 382 – 3,691
Undeveloped – – – – 613 43 1,441 27 – 2,124
– – – – 1,206 43 4,157 409 – 5,815
Changes attributable to
Revisions of previous estimates – – – – (25) 5 795 (5) – 770
Improved recovery – – – – 103 – 73 2 – 178
Purchases of reserves-in-place – – – – 103 – – 14 – 117
Discoveries and extensions – – – – – – 25 – – 25
Productionde – – – – (59) – (362) (80) – (501)
Sales of reserves-in-place – – – – (260) – – – – (260)
– – – – (138) 5 531 (69) – 329
At 31 December 2011hi
Developed – – – – 546 – 2,961 274 – 3,781
Undeveloped – – – – 522 48 1,727 66 – 2,363
– – – – 1,068 48 4,688 340 – 6,144
Total subsidiaries and equity-accounted entities (BP share)
At 1 January 2011
Developed 608 84 3,366 10 1,253 600 2,716 873 662 10,172
Undeveloped 574 295 1,923 179 1,805 822 1,441 398 462 7,899
1,182 379 5,289 189 3,058 1,422 4,157 1,271 1,124 18,071
At 31 December 2011
Developed 531 76 3,362 5 1,068 522 2,961 629 675 9,829
Undeveloped 602 308 1,833 178 1,695 713 1,727 408 455 7,919
1,133 384 5,195 183 2,763 1,235 4,688 1,037 1,130 17,748
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.
b5.8 billion cubic feet of natural gas = 1 million barrels of oil equivalent.
cProved reserves in the Prudhoe Bay field in Alaska include an estimated 82 million barrels of oil equivalent upon which a net profits royalty will be payable over the life of the field under the terms of the
BP Prudhoe Bay Royalty Trust.
dExcludes NGLs from processing plants in which an interest is held of 28 thousand barrels of oil equivalent a day.
eIncludes 34 million barrels of oil equivalent of natural gas consumed in operations, 27 million barrels of oil equivalent in subsidiaries, seven million barrels of oil equivalent in equity-accounted entities
and excludes two million barrels of oil equivalent of produced non-hydrocarbon components which meet regulatory requirements for sales.
fIncludes 616 million barrels of NGLs. Also includes 496 million barrels of oil equivalent in respect of the 30% non-controlling interest in BP Trinidad and Tobago LLC.
gVolumes of equity-accounted entities include volumes of equity-accounted investments of those entities.
hIncludes 19 million barrels of NGLs. Also includes 340 million barrels of oil equivalent in respect of the non-controlling interest in TNK-BP.
iTotal proved reserves held as part of our equity interest in TNK-BP is 4,802 million barrels of oil equivalent, comprising 100 million barrels of oil equivalent in Venezuela, 14 million barrels of oil
equivalent in Vietnam and 4,688 million barrels of oil equivalent in Russia. In 2011, BP aligned its reporting with TNK-BP by moving to a life of field reporting basis. Reasonable certainty of licence
renewals is demonstrated by evidence of Russian subsoil law, track record of renewals within the industry and track record of success in obtaining renewals by TNK-BP. This has resulted in an increase
in proved reserves of 253 million barrels of oil equivalent.
218 BP Annual Report and Form 20-F 2013