断层封闭性研究在烃类聚集系统分析中的意义  

SIGNIFICANCE OF STUDING FAULT SEAL IN HYDROCARBON ACCUMULATION SYSTEM ANALYSIS

作　　者：马立祥[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《天然气地球科学》2000年第3期1-7,34,共8页Natural Gas Geoscience

摘　　要：油气系统(petroleum system)理论是当今油气勘探领域中的热点研究课题之一。油气系统具有生油层、储集层、上覆层、封闭层、流体和圈闭等系统结构。系统论强调系统的尺度、相对独立性和相对的时空性。在油气系统分析中,油气系统的划分是关键,它对客观评价油气系统的前景、确定有利的勘探区带和圈闭具有十分重要的意义。系统的封闭性研究是划分油气系统的基础。在断层发育的地区,由于断层的封闭或开启,可使油气系统的地理分布范围缩小或扩大,其油气勘探远景的评价也就发生相应的变化。论述了油气系统的内涵和断层的封闭性机理及其研究方法,并以塔里木盆地巴楚隆起油气系统分析实例论证了断层的封闭性研究在油气系统分析中的重要意义。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.

关 键 词：油气系统 断层封闭 系统边界 烃系聚集 

分 类 号：P618.130.2[天文地球—矿床学]