2010 Acreage

Year ended December 31, 2010
(thousand acres)
 Developed Undeveloped Total
Property Gross Net Gross Net Gross Net
North America1            
Shale 27.8 21.8 2,480.1 1,898.9 2,507.9 1,920.7
Conventional2        827.6 554.4 1,969.8 1,391.0 2,797.4 1,945.4
Frontier3        2.7 – 6,453.7 3,650.3 6,456.4 3,650.3
Total North America        858.1 576.2 10,903.6 6,940.2 11,761.7 7,516.4
UK            
Northern Business Area 166.1 108.0 434.2 202.8 600.3 310.8
Central Business Area 117.7 90.9 254.6 158.4 372.3 249.3
Other UK – – 4.2 0.8 4.2 0.8
Total UK        283.8 198.9 693.0 362.0 976.8 560.9
Scandinavia            
Southern North Sea 66.1 44.5 157.9 76.5 224.0 121.0
Mid North Sea 74.9 26.6 27.2 13.2 102.1 39.8
Other Scandinavia4        – – 1,376.4 503.3 1,376.4 503.3
Total Scandinavia        141.0 71.1 1,561.5 593.0 1,702.5 664.1
Southeast Asia            
Indonesia5 460.0 75.9 12,223.6 5,411.2 12,683.6 5,487.1
Malaysia        115.3 57.4 3,687.3 2,451.4 3,802.6 2,508.8
Vietnam        8.3 2.7 3,547.8 1,707.7 3,556.1 1,710.4
Australia        9.2 3.6 371.0 108.0 380.2 111.6
Papua New Guinea        – – 17,190.4 9,031.9 17,190.4 9,031.9
Total Southeast Asia        592.8 139.6 37,020.1 18,710.2 37,612.9 18,849.8
Latin America            
Colombia6        – – 10,906.4 5,280.2 10,906.4 5,280.2
Peru        – – 8,219.4 4,324.2 8,219.4 4,324.2
Total Latin America        – – 19,125.8 9,604.4 19,125.8 9,604.4
Other            
Algeria        196.0 34.4 – – 196.0 34.4
Tunisia        – – – – – –
Rest of World7        – – 846.1 402.9 846.1 402.9
Total Other        196.0 34.4 846.1 402.9 1,042.1 437.3
Total Worldwide8        2,071.7 1,020.2 70,150.1 36,612.7 72,221.8 37,632.9
  1. ‘‘Developed’’ acreage consists of acreage assigned to productive wells. Each productive shale well has been allocated 80 acres of spacing, rather than the more traditional spacing of 640 acres used for conventional wells.
  2. Conventional acreage is derived by subtracting total shale acreage and total frontier acreage from total acreage. Where the Company has both shale and conventional formations under one title document, acreage is counted only with respect to shale.
  3. Frontier includes properties in the Northwest Territories, Nunavut, Yukon and Alaska.
  4. Other Scandinavia includes exploration acreage in the Barents Sea and Denmark.
  5. The Corridor PSC constitutes a significant portion of the Company’s gross and net developed acreage in Indonesia.
  6. Excludes 1,680,000 gross acres and 330,000 net acres acquired as part of the BP Colombia acquisition which was completed in January 2011.
  7. Rest of World includes the Kurdistan region of northern Iraq.
  8. Excludes 375,000 net acres which are subject to regulatory approval in UK, Norway and Papua New Guinea.