摘要
作为含油气盆地中油气运移的重要通道,断裂带的内部结构及其输导作用一直是研究的重点。通过野外露头及室内岩心观察发现,断裂带内部结构具有分带性,主要包括破碎带和高裂缝带,同时影响断裂带输导作用的物质因素主要有断裂带破碎程度、泥岩涂抹和矿物沉淀3方面。根据断裂带流体活动周期性变化特征,在断裂发生、发展和封闭的不同时期,将断裂带的输导作用划分为3个阶段:断裂活动期油气沿断裂带的高效运移阶段、断裂静止期前后油气沿断裂裂缝带的连续运移阶段和断裂静止期油气沿断裂破碎带的低速运移阶段。
As an important pathway of hydrocarbon migration in oil and gas bearing basin,the internal structure andhydrocarbon migration through the fault zone are always the key to the study.The field-geology survey shows that the internal structure of the fault zone is composed by two main parts:breakage zone and induced fracture zone.And,the factors influencing the migration within the fault zone are mainly breakage of the fault zone,the smearing of the mudstone and the mineral precipitation.Based on the cyclic changes of the fluid in the fault zone,the migration within the fault zone may be classified into 3 stages according to different evolutionary period from occurrence to development and to closure,that is,the high-efficient migration stage in active period of fault,continuous migration stage through fracture during static period of fault and limited migration stage in static period of fault.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第4期1-3,共3页
Petroleum Geology and Recovery Efficiency
基金
国家重大专项"渤海湾盆地东营凹陷勘探成熟区精细评价示范工程"(2008ZX05051)
关键词
断裂带
内部结构
输导作用
流体活动
断裂活动
fault zone
internal structure
hydrocarbon migration
fluid activity
fault activity
