Upstream > Oil and gas acreage / Number of   productive wells Key figures | Key operating ratios | Productions | Changes in reserves | Results of operations | Costs incurred | Capitalized cost | Standardized measure of discounted future net cash flow | Changes in the standardized measure of discounted future net cash flows | Main producing fields | Oil and gas acreage / Number of productive wells | Drilling activities | Liquified natural gas activity | Gas and Power activity | Upstream maps Oil and gas acreage Download Excel table (thousands of acres at year end)   Undeveloped acreage (1) Developed acreage     2000 2000 Europe Gross 15,696 1,435   Net 6,167 277 Africa Gross 74,265 370   Net 22,470 154 North America Gross 3,814 20   Net 1,329 6 Far East Gross 20,424 555   Net 12,506 208 Rest of the world Gross 51,690 1,439   Net 19,544 306 Total Gross 165,889 3,819   Net (2) 62,286 951 (1) Undeveloped acreage includes leases and concessions. (2) Net acreage equals the sum of the Company's fractional interests in gross acreage. Number of productive oil and gas wells Download Excel table (thousands of acres at year end)   Gross wells capable Net wells capable     of producing of producing(1)     2000 2000 Europe Oil 556 186   Gas 398 164 Africa Oil 2,549 729   Gas 16 10 North America Oil 83 24   Gas 661 343 Far East Oil 203 86   Gas 601 157 Rest of the world Oil 139 64   Gas 148 36 Total Oil 3,530 1,089   Gas 1,824 710 (1) Net wells equal the sum of the Company's fractional interests in gross acreage. Key figures | Key operating ratios | Productions | Changes in reserves | Results of operations | Costs incurred | Capitalized cost | Standardized measure of discounted future net cash flow | Changes in the standardized measure of discounted future net cash flows | Main producing fields | Oil and gas acreage / Number of productive wells | Drilling activities | Liquified natural gas activity | Gas and Power activity | Upstream maps