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| Reserves |
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| Oil and Gas Activities | Total Oil and Gas |
Mining | Total Oil, Gas and Mining |
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| International | US | Canada | Syncrude 3 |
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| Yemen | United Kingdom | Other Intl | |||||||||||
| mmboe | Oil | Oil | Gas | Oil | Oil | Gas | Oil | Gas | Bitumen | ||||
| Proved Reserves1 | |||||||||||||
| December 31, 2006 | 66 | 179 | 3 | 40 | 34 | 39 | 57 | 61 | 246 | 725 | 324 | 1,049 | |
| Extensions & Discoveries | 2 | 10 | - | - | 1 | 3 | 1 | 6 | - | 23 | 8 | 31 | |
| Acquisitions | - | 1 | - | - | 3 | 8 | - | - | - | 12 | - | 12 | |
| Dispositions | - | - | - | - | - | (2) | - | - | - | (2) | - | (2) | |
| Revisions | 1 | 43 | 1 | - | (7) | (5) | 4 | 2 | 22 | 61 | - | 61 | |
| Production | (28)4 | (30) | - | (2) | (6) | (6) | (6) | (7) | - | (85) | (8) | (93) | |
| December 31, 2007 | 41 | 203 | 4 | 38 | 25 | 37 | 56 | 62 | 268 | 734 | 324 | 1,058 | |
| Probable Reserves 1,2 | |||||||||||||
| December 31, 2006 | 22 | 152 | 8 | 59 | 69 | 30 | 22 | 40 | 154 | 556 | 46 | 602 | |
| Extensions, Discoveries & Conversions | (4) | (29) | (2) | - | 0 | 2 | 1 | (2) | 378 | 344 | - | 343 | |
| Acquisitions | - | 2 | - | - | 1 | 6 | - | - | - | 9 | - | 9 | |
| Dispositions | - | - | - | - | (15) | (9) | - | - | - | (24) | - | (24) | |
| Revisions | (3) | 14 | (1) | 1 | (16) | (8) | 1 | (4) | (9) | (25) | - | (24) | |
| December 31, 2007 | 15 | 139 | 5 | 60 | 39 | 21 | 24 | 34 | 523 | 860 | 46 | 906 | |
| Proved + Probable Reserves 1,2 | |||||||||||||
| December 31, 2006 | 88 | 331 | 11 | 99 | 103 | 69 | 79 | 101 | 400 | 1,281 | 370 | 1,651 | |
| Extensions, Discoveries & Conversions | (2) | (19) | (2) | - | 1 | 5 | 2 | 4 | 378 | 367 | 8 | 374 | |
| Acquisitions | - | 3 | - | - | 4 | 14 | - | - | - | 21 | - | 21 | |
| Dispositions | - | - | - | - | (15) | (11) | - | - | - | (26) | - | (26) | |
| Revisions | (2) | 57 | - | 1 | (23) | (13) | 5 | (2) | 13 | 36 | - | 37 | |
| Production | (28)4 | (30) | - | (2) | (6) | (6) | (6) | (7) | - | (85) | (8) | (93) | |
| December 31, 2007 | 56 | 342 | 9 | 98 | 64 | 58 | 80 | 96 | 791 | 1,594 | 370 | 1,964 | |
| Notes | ||||
| 1 We internally evaluate all of our reserves and have at least 80% of our proved reserves assessed by independent qualified consultants each year; 98% were assessed this year. Our reserves are also reviewed and approved by our Reserves Committee and our Board of Directors. Reserves represent our working interest before royalties at year-end constant pricing using Securities and Exchange Commission rules. Gas is converted to equivalent oil at a 6:1 ratio. | ||||
| 2 Probable reserves are determined according to SPE/WPC definitions. US investors should read the Cautionary Note to US Investors. | ||||
| 3 US investors should read the Cautionary Note to US Investors. | ||||
| 4Production includes volumes used for fuel in Yemen. | ||||