源-盖共控论述要

ESSENTIALS ABOUT HYDROCARBON DISTRIBUTION CONTROLLED BY SOURCE AND SELA

中国石油地质家早在1982年已提出“生油区基本控制油气分布”的“源控论”，此后又提出区域盖层对油气富集起关键作用。在此基础上，提出“源-盖共控论”：有效烃源老和盖层共同控制着油气系统的有效性，盖层获得封闭能力的地质时期是形成油气系统的关键时刻，一旦盖层被破坏，油气系统即失去有效性；烃源岩与盖层共同控制油气成藏，二者间关系是影响油气富集最为重要的耦合效能关节；在二者兼备的前提下，将油气系统各要素的动态、静态演化与其油气资源前景的相关性归纳为5方面。以塔里木盆地油气富集条件为实例，论述了“源-盖共控”的具体方式。

In 1982, some Chinese petroleum geologists advanced a theory called 'Hydrocarbon ixstribution Controlled by Source Rock',it is said the distribution of the hydrocarbon in a basin is controlled by the distribution area of source rock. And then, theyalso suggested that the regional seal is really important to oil and gas accumulation. According to these theories, the authorhere advances a theory named 'Hydrocarbons ixstribution Controlled by bource and Seal'. The active source rock and sealdetermine an effective petroleum system, which has a critical moment just when the seal gets enough impedance to stophydrocarbon migration. While is destroyed, the system died. Regional seal and active source are essential to the integrity andretention characteristics of oil and gas pools. The coupling relationship between them greatly affects the richness of oil andgas. When the conditions of source and seal are available, five points are summed up to explain the connection betweenpetroleum prosPect and the dynamic and static evo1ution of the system,s elements. Taking Tarim basin as an example, thispaper discusses the theory about 'Hydrocarbons ixstribution Controlled by Source and Seal'.