BP 2011 Annual Report Download - page 282

280 BP Annual Report and Form 20-F 2011
Supplementary information on oil and natural gas (unaudited)
Operational and statistical information
The following tables present operational and statistical information related to production, drilling, productive wells and acreage. Figures include amounts
attributable to assets held for sale.
Crude oil and natural gas production
The following table shows crude oil and natural gas production for the years ended 31 December 2011, 2010 and 2009.
Production for the yeara
Europe North
America
South
America
Africa Asia Australasia Total
UK
Rest of
Europe US
Rest of
North
America Russia
Rest of
Asia
Subsidiaries
Crude oilbthousand barrels per day
2011 113 32 453 239 190 –138 25 992
2010 137 40 594 754 246 –119 32 1,229
2009 168 40 665 861 304 –123 31 1,400
Natural gascmillion cubic feet per day
2011 355 13 1,843 14 2,197 558 –618 795 6,393
2010 472 15 2,184 202 2,544 556 –574 785 7,332
2009 618 16 2,316 263 2,492 621 –610 514 7,450
Equity-accounted entities (BP share)
Crude oilbthousand barrels per day
2011 ––––90 –865 210 –1,165
2010 ––––98 –856 191 –1,145
2009 ––––101 –840 194 –1,135
Natural gascmillion cubic feet per day
2011 ––––392 –699 34 –1,125
2010 ––––399 –640 30 –1,069
2009 ––––392 –601 42 –1,035
a Production excludes 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.
b Crude oil includes natural gas liquids and condensate.
c Natural gas production excludes gas consumed in operations.
Productive oil and gas wells and acreage
The following tables show the number of gross and net productive oil and natural gas wells and total gross and net developed and undeveloped oil and
natural gas acreage in which the group and its equity-accounted entities had interests as at 31 December 2011. A ‘gross’ well or acre is one in which a
whole or fractional working interest is owned, while the number of ‘net’ wells or acres is the sum of the whole or fractional working interests in gross wells or
acres. Productive wells are producing wells and wells capable of production. Developed acreage is the acreage within the boundary of a field, on which
development wells have been drilled, which could produce the reserves; while undeveloped acres are those on which wells have not been drilled or
completed to a point that would permit the production of commercial quantities, whether or not such acres contain proved reserves.
Europe North
America
South
America
Africa Asia Australasia Total
UK
Rest of
Europe US
Rest of
North
America Russia
Rest of
Asia
Number of productive wells at
31 December 2011
Oil wellsa– gross 197 73 2,629 36 3,764 566 20,308 1,750 13 29,336
– net 97 28 1,063 18 2,090 429 9,131 315 213,173
Gas wellsb– gross 273 –24,986 376 467 122 72 589 68 26,953
– net 137 –12,863 185 152 47 36 219 14 13,653
Oil and natural gas acreage at 31 December 2011 Thousands of acres
Developed – gross 334 65 7,350 228 1,718 560 1,618 1,952 162 13,987
– net 182 21 4,266 111 450 207 723 384 35 6,379
Undevelopedc– gross 1,276 186 7,210 6,273 10,064 27,000 33,704 56,189 18,641 160,543
– net 764 79 4,798 4,253 4,571 17,895 14,712 17,890 13,452 78,414
a Includes approximately 3,866 gross (1,702 net) multiple completion wells (more than one formation producing into the same well bore).
b Includes approximately 2,683 gross (1,689 net) multiple completion wells. If one of the multiple completions in a well is an oil completion, the well is classified as an oil well.
c Undeveloped acreage includes leases and concessions.