【摘要】 在塔里木盆地满西寒武系—下奥陶统油气系统中已发现了哈得4石炭系油田、乡3井奥陶系和石炭系油气藏以及东河塘石炭系、侏罗系油田;烃源岩为寒武系—下奥陶统,成藏关键时刻在喜山期;油气沿断裂向上运移至石炭系底不整合面后,主要沿石炭系东河砂岩输导层运移,遇断层可进一步向上覆地层运移;油气系统中储层正常压力分布区有利于油气聚集;油气藏除构造型外,还有地层、岩性、构造—地层复合型。该油气系统的确定拓展了寻找以寒武系—下奥陶统为主力烃源岩的黑油油藏的新领域。更多还原

【Abstract】 In the Manxi Cambrian—Lower Ordovician petroleum system of Tarim basin, Hade-4 Carboniferous oil field, Xiang-3 Ordovician and Carboniferous petroleum reservoir, and Donghetang Carboniferous and Jurassic oil field have been found. The source rock is the Cambrian—Lower Ordovician shale and shaly carbonate. The critical moment of the above reservoirs is the Himalayan phase. Hydrocarbon migareted upwards at first from the source rock to the unconformity surface below the Carboniferous, and then migareted along the unconformity conduit layer until they are traped. Hydrocarbon are normally ditributed in reservoirs with normal pressure. In this petroleum system, besides the structural traps, stratigraphic and lithological traps can also be found. The identification of this petroleum system is benificial to finding more reservoirs sourced from the Cambrian—Lower Ordovician.更多还原