SIGNIFICANCE OF STUDING FAULT SEAL IN HYDROCARBON ACCUMULATION SYSTEM ANALYSIS
断层封闭性研究在烃类聚集系统分析中的意义

Petroleum system is one of hotspot questions for discussion in petroluem geologic field. Petroluem system includes structures of source bed, reservoir bed, overburded bed, seal bed fluid and trap. Systemic roper-ties of scale, relative self-existence and space time are emphsized in system Theory. The key is division of system in ptroleum system analysis. It is important for evaluating potential of hydrocarbons and confirming favouroble exploration plays and traps. Studing seal performance of petroleum system is basis of the system division. Seal or open of fault may be changed geographic distribution of petroleum system,which results in change of evaluation of petroleum exploration. Conotation of petroleum system, mechanism of fault seal and studing methods are reviewed in this paper. Importance of studing fault seal is demon-strted by example of Bachu rise Petroleum system ,Tarim Basin.