含油气盆地油气成藏流体动力系统划分的方法

流体动力系统是控制油气藏形成和分布的基本单元，在含油气盆地分析中，划分流体动力系统，确定流体动力系统的类型，进而按类型研究不同系统的成藏作用和没气藏分布规律，是指导油气勘探的一条有效途径。而在盆地内进行纵、横向上流体动力系统的划分，是一个基于构造、地层、温度、流体动力和流体化学等方面以及温度－压力关系综合分析的一个十分复杂的资料整理、信息加工和逻辑推理过程，其目的主要是在纵向上把控制油气成藏的不同

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A fluid dynam icsystem isabasicunitwhich controlsoiland gaspools'formation and distribution.In petrolif- erous basins analysis, itisan efficientway to divide thebasin understudy into severalfluid dynam icsystem , and assess the oiland gasform ation conditionsforeach system according to itstype. Division ofa basin into severalfluid dynam ic system s is a com plex procedure w hich needsa com prehensive study and inference on tectonics, stratigraphy, tem pera- ture, fluid dynam icsand fluid geochem istry, and therelation between tem peratureand pressure. Itsm ain objectivesare the verticaldivision ofseveralsystem s and determ ination ofinfluenced area by lateralgravity-driven fluid flow . In this article, the principes ofsystem s division in verticaldirection and the procedure fordeterm ination ofinfluenced area by lateralgravitydriven flow are sum m arized.