中国海相油气成藏特征与富集主控因素

Main Controlling Factors of Reservoiring Features of Marine Oil/gas and Enrichment in China

中国海相油气资源丰富,但复杂的构造演化历史以及热体制变化,使得海相油气成藏具复杂性。地温场演变决定了海相烃源岩成烃具多期性;多期构造运动导致了多期成藏与调整、改造与破坏;晚期强烈构造变形,使得现今海相油气藏成藏期晚。海相古隆起、有利储集带以及古断裂带利于海相油气富集,是勘探的主要有利区带。

Oil/gas resources is rich in marine strata in China, due to the evolution history of complicate tectonics and the variation of thermalsystem, the features of formation and accumulation of marine oil/gas reservoirs are relatively complicated. The variation of geotemperature fieldwould result in the multistage hydrocarbon-generating of source rocks; Multistage tectonic movements result in the multistage reservoir-formingand adjustment, reconstruction and damaging; During the later period, strong tectonic deformation made the marine oil/gas reservoirs generatevery late. The favorable tectonic positions such as marine paleo-uplift, promising reservoiring belts and paleo-fault belts, are regarded as themain areas for exploration.