塔里木盆地库车坳陷油气藏形成及油气聚集规律

库车坳陷已在5个层系(组)中获得工业油气流,发现了多个大型油气藏。从烃源条件、圈闭条件、储盖组合及保存条件,系统分析了库车前陆盆地油气藏形成与演化,指出库车前陆盆地的油气藏类型多,含油气层系多,且多沿断裂和不整合面分布。油气聚集受盆地构造格局、区域盖层、断裂和不整合面控制。

Reservoir Formation and Oil and Gas Accumulation Pattern in Kuche Depression,Tarim Basin

Commercial hydrocarbon nows have been obtained in five series of strata (formations) in Kuche Depression, leading to the discovery of multiple large reservoirs. In terms of hydrocarbon sources conditions, trap conditions, reservoir-cap combinations and preservation conditions, the paper made a systematic analysis on the reservoir formation and evolution in Kuche foreland basin, and pointed out that there exist a large variety of reservoir types,hydrocarbon bearing intervials, which are mostly distributed along the faulted surface and unconformable surfaces. Hydrocarbon ac- cumulation is controlled by tectonic framework, regional cap formation, faults and unconformable surfaces.