实测岩石压缩系数偏高的原因分析  

Results Interpretation of Higher Measured Rock Compressibility

作　　者：李传亮[1] 

机构地区：[1]西南石油学院油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《大庆石油地质与开发》2005年第5期53-54,共2页Petroleum Geology & Oilfield Development in Daqing

基　　金：四川省应用基础研究资助项目(04JY029-14)

摘　　要：实测的岩石压缩系数数值普遍偏高,甚至高于地层原油的压缩系数,该现象是由于岩心的表皮效应所致。由于岩心表面不够光滑,岩心与封套之间存在一定的微间隙,当岩心受到压缩时,微间隙也随之受到压缩,从而增大了岩石的压缩系数。The measured rock compressibility is generally higher, or even higher than that of formation oil. This is due to the skin effect of cores. There is certain minor interspace between cores and packets because the surface of cores is not smooth enough. When cores are compressed, the minor interspace will be also compressed. So, the compressibility of rocks will be higher.

关 键 词：油藏 岩石 岩心 压缩系数 

分 类 号：TE135[石油与天然气工程—油气勘探]