中国石油大学学报（自然科学版）2018，Vol.42Issue(3)：50-56,7.DOI:10.3969/j.issn.1673-5005.2018.03.006
油基钻井液环境下电成像测井响应分析及定量反演
Response analysis and quantitative inversion of electrical imaging logging in oil based drilling fluid environment
摘要
Abstract
Aiming at existing problems of electrical imaging logging technology in oil based drilling fluid environment,the ap-parent resistivity characteristics of a vertical coupling method and conventional processing methods are studied using numeri-cal simulation. Then,the formation resistivity and the standoff between the instruments pad and formation are inversed quan-titatively using support vector machine for regression. The effectiveness of this inversion processing is verified by comparing results with that imaged in a water based drilling fluid environment. Fuzzy images in the conventional processing for low-re-sistivity formation is resolved,and the reversal problem that may occur in the vertical coupling method for high-resistivity for-mation is eliminated.The low or high formation resistivity and the standoff variation in relatively low-resistivity formation can be interpreted quantitatively. This study can greatly benefit data processing for electrical imaging logging in oil based drilling fluid environment.关键词
油基钻井液/电成像测井/支持向量回归/定量反演/地层电阻率Key words
oil based drilling fluid/electrical imaging logging/support vector machine for regression(SVR)/quantitative in-version/formation resistivity分类
天文与地球科学引用本文复制引用
高建申,孙建孟,姜艳娇,于其蛟,刘彦萍..油基钻井液环境下电成像测井响应分析及定量反演[J].中国石油大学学报（自然科学版）,2018,42(3):50-56,7.基金项目
国家自然科学基金项目(41474108,41704106) （41474108,41704106）
国家科技重大专项(2016ZX05006002-004) （2016ZX05006002-004）
