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在论述西湖凹陷沉积演化、生烃岩、生烃凹陷和油气生成期的基础上,对油气运移的时间、过程和动力进行了界定,论证了生烃岩在压实团结过程中释放的压实水和粘土矿物转化释水在油气初次运移中的贡献,进行了排烃量的估算,论述了渗透层中重力水的流动态势和油气二次运移的时间和指向,并从地质、水文地质、地球化学三个方面综合评价了西部斜坡、中央长垣和东部断阶利于油气运聚成藏的条件和地段.
Based on the discussion of sedimentary evolution, hydrocarbon-generating rocks, hydrocarbon-generating sags and hydrocarbon generation stages in the Xihu Sag, the time, process and dynamics of hydrocarbon migration are defined, and the pressure released during the process of compaction and solidification is demonstrated The contribution of solid-water and clay-derived water released during the primary migration of oil and gas, the hydrocarbon expulsion was estimated, the flow momentum of gravitational water in the infiltration layer and the time and orientation of secondary migration of oil and gas were discussed, Hydrogeology and geochemistry. The conditions and locations of west slope, Central Plains and the east fault are favorable for hydrocarbon migration and accumulation.