利用常规测井资料识别砂泥岩中裂缝的方法研究  

Method Research to Distinguish Fracture by Using Conventional Logging Data

作　　者：谭海芳[1] 师桂祥[1] 申梅英[1] 张营胜[1] 

机构地区：[1]中原石油勘探局测井公司

出　　处：《断块油气田》2004年第6期81-82,共2页Fault-Block Oil & Gas Field

摘　　要：裂缝在砂泥岩地层中的作用虽次于在碳酸盐岩中 ,但在深部地层 ,由于压实作用使储层孔隙度很小的情况下 ,如果有裂缝存在 ,势必会对砂岩的渗透性起到改善作用 ,形成有开发价值的产层。研究证明 ,通过孔隙度差值、电阻率下降、声波时差增大、变密度异常等常规测井资料的显示能指示出裂缝。同时常规测井具有普及面广、经济、实用的优点 ,因此用常规测井资料识别砂泥岩中裂缝是具有研究和使用价值的技术。Fracture plays less important role in sandstone and shale But in deep formation,there is small porosity as the result of compaction If the fractures exist,the permeability of sandstone formation will be improved,then production zone is formed The research shows that the fracture can be distinguished by using conventional logging data,for example,porosity difference,big sonic interval time,low resistivity,VDL anomaly etc The conventional logging have prevalent,economical and practical advantages,so the method of distinguishing fracture by using conventional logging data is a valuable technique

关 键 词：裂缝 孔隙度曲线 电阻率 变密度 

分 类 号：TE347[石油与天然气工程—油气田开发工程]