毛管力影响电缆地层测试压力的校正新方法  

INFLUENCE OF CAPILLARY FORCE ON WFT MEASUREMENT AND NEW CORRECTING METHOD

作　　者：关富佳[1] 李相方[1] 隋秀香[1] 李云波[1] 刘书民 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京昌平102249 [2]中海油技术服务有限公司,北京燕郊101149

出　　处：《西南石油大学学报（自然科学版）》2007年第6期17-20,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家高技术研究发展计划(863)项目(JSKF2004YJ38)

摘　　要：针对电缆地层测试(WFT)在短时间内抽吸地层流体无法解除侵入带的泥浆污染,泥浆侵入带形成的毛管力对测试压力数据有很大的影响。在分析不同储层的侵入带形成的毛管力性质,及几种校正方法的基础上,把核磁共振测井资料与斯伦贝谢经验公式相结合,建立了一种计算泥浆侵入带毛管力的新方法。应用该方法对电缆地层测试压力数据进行了校正,经与DST测试数据的对比分析,证明该方法能够准确地校正毛管力对电缆地层测试压力数据的影响,提高了电缆地层测试数据解释精度。Wireline formation testing(WFT)is one of primary methods of deriving reservoir information in oil industry. As the testing time is relatively short, WFT pumping Volume seldom breaks down mud contamination, capillary force in the invaded zone impacts testing pressure data. The capillary force properties of invaded zone in different formation type are analyzed, and a novel capillary force calculation model is established based on the combination of NMR logging data and empirical equation from Schlumberger CORP. The WFT testing data corrected by this model are compared with DST testing data. The comparative result shows that this novel model method can effectively correct WFT data, and improve WFT interpreting accuracy.

关 键 词：电缆地层测试(WFT) 毛管力 润湿性 钻杆地层测试(DST) 地层压力 

分 类 号：TE272[石油与天然气工程—油气井工程]