非洲油气勘探区战略选择建议

非洲不同类型的沉积盆地主要可归纳为：古、中生代挠曲盆地，中、新生代大陆边缘断陷盆地，板内裂谷盆地和大陆边缘进积三角洲盆地。通过盆地油气成藏条件地质综合评价、不同勘探阶段的类比和最终勘探潜力分析，对非洲的沉积盆地进行了划分，在此基础上，总结出非洲油气勘探区选择应遵循的原则。对于油气勘探长期战略选区，原则上，优选低成本油气远景区，即使存在高风险，但亦可获得高回报；对于油气勘探中期发展策略选区，应该寻找地质条件好的油气资源区，投资中短期高利润项目；对于油气勘探中短期发展策略选区，一般应优选中低成本、低风险、低利润且短期能获得油气发现和勘探突破的有利油气勘探区。图1表3参5

Recommendations on strategic selection of exploration areas in Africa

The sedimentary basins in Africa are of different structure styles: Paleozoic and Mesozoic flexure basins,Mesozoic and Cenozoic continental margin rift basins,intra-plate rift basins and continental margin progradational deltaic basins.The paper categorizes the basins according to the integrated geological evaluation of the play elements,the basin analog analysis of various exploration stages and the ultimate exploration potential analysis.Based on which,the authors conclude that the selection of exploration areas in Africa should follow the following principles: for long-term the strategic exploration areas should have resources potential,low cost,high risk and high return;for mid-term the strategic exploration areas should be the hydrocarbon resources in good geological conditions,with high return in short to middle terms;for short-term the strategic exploration areas should be of middle to low cost,low risk and low return,just be favorable for petroleum discovery during a short period.