RESERVES RECONCILIATION Gross Interest (Working Interest - Royalties Payable) Light and Oil Medium Heavy Total Conventional Natural Gas Total Equivalent Crude Oil Crude Crude Oil NGLs Natural Gas from Coal Natural Gas 2008 (mbbl) (mbbl) (mbbl) (mbbl) (bcf) (bcf) (bcf) (mboe)
PROVED PRODUCING Opening Balance Exploration discoveries Drilling extensions Improved recovery Infill drilling Technical revisions Acquisitions Dispositions Economic factors Production Closing Balance
98,381 55 851 1,364 2,272 1,260 46 0 506 (9,930) 94,805
2,224 0 15 0 210 200 0 0 71 (363) 2,358
100,605 55 866 1,364 2,483 1,460 46 0 577 (10,293) 97,163
9,280 1 37 136 232 214 0 0 32 (1,397) 8,535
432.6 0.4 4.5 15.3 29.5 15.3 0.0 0.0 1.8 (68.7) 430.7
6.4 0.0 1.7 0.0 0.4 (0.2) 0.0 0.0 (0.0) (1.2) 7.0
438.9 0.4 6.2 15.4 29.9 15.1 0.0 0.0 1.8 (69.9) 437.8
183,042 122.6 1,935 4,062 7,701 4,185 46 0 911 (23,345) 178,660
110,686 55 860 1,108 2,685 (1,095) 46 0 496 (9,930) 104,912
2,353 0 15 0 160 137 7 0 58 (363) 2,366
113,039 55 875 1,108 2,845 (958) 53 0 554 (10,293) 107,278
11,249 17 199 60 758 141 0 0 30 (1,397) 11,057
578.3 4.3 48.1 0.6 140.7 19.3 0.0 0.0 1.9 (68.7) 724.6
11.5 0.0 2.4 0.0 0.5 (0.8) 0.0 0.0 0.0 (1.2) 12.4
589.8 4.3 50.5 0.6 141.2 18.6 0.0 0.0 1.9 (69.9) 736.9
222,592 794 9,486 1,264 27,132 2,278 54 0 898 (23,345) 241,154
29,698 26 477 300 709 (1,004) 15 0 (83) 0 30,138
781 0 5 0 (110) (68) 2 0 30 0 640
30,479 26 482 300 599 (1,073) 17 0 (53) 0 30,777
2,969 8 145 10 177 17 0 0 4 0 3,330
157.8 1.9 51.5 0.3 37.3 6.5 0.0 0.0 0.7 0.0 256.2
7.2 0.0 0.9 (0.0) 0.1 (1.3) 0.1 0.0 (0.0) 0.0 6.9
165.1 1.9 52.3 0.3 37.4 5.3 0.1 0.0 0.7 0.0 263.1
60,958 355 9,348 355 7,012 (178) 37 0 73 0 77,960
3,134 0 20 0 50 68 9 0 88 (363) 3,006
143,518 81 1,357 1,408 3,444 (2,031) 70 0 501 (10,293) 138,055
14,218 25 344 70 935 158 0 0 34 (1,397) 14,386
736.2 6.3 99.6 0.9 178.1 25.9 0.0 0.0 2.6 (68.7) 980.7
18.7 0.0 3.2 (0.0) 0.5 (2.0) 0.1 0.0 (0.0) (1.2) 19.3
754.9 6.3 102.8 0.8 178.6 23.8 0.1 0.0 2.6 (69.9) 1,000.0
283,550 1,149 18,834 1,619 34,144 2,100 91 0 971 (23,345) 319,114
TOTAL PROVED Opening Balance Exploration discoveries Drilling extensions Improved recovery Infill drilling Technical revisions Acquisitions Dispositions Economic factors Production Closing Balance
PROBABLE Opening Balance Exploration discoveries Drilling extensions Improved recovery Infill drilling Technical revisions Acquisitions Dispositions Economic factors Production Closing Balance
PROVED PLUS PROBABLE Opening Balance Exploration discoveries Drilling extensions Improved recovery Infill drilling Technical revisions Acquisitions Dispositions Economic factors Production Closing Balance
31
IDENTIFY. CREATE. DELIVER.
140,384 81 1,337 1,408 3,394 (2,099) 61 0 413 (9,930) 135,049