电测井视电导率定义的统一性及感应测井的趋肤效应校正  

Consistency of the Definition of Apparent Conductivity in Electrical Logging and Skin Effect Correctron in Induction Logging.

作　　者：高杰[1] 刘迪军[1] 

机构地区：[1]石油大学地球科学系

出　　处：《测井技术》2001年第5期332-334,共3页Well Logging Technology

摘　　要：从电测井视电导 (阻 )率定义的统一性出发 ,对于感应测井 ,建议采用把不同条件下 (包括测量频率、仪器结构等条件 )的均匀介质的视电导 (阻 )率定义成其真实电导 (阻 )率的作法。在均匀介质中 ,如此定义的视电导率相当于进行了趋肤效应校正后的数值 ,与真实地层电导率是相等的 ,因此 ,直流电测井和感应测井的视电导 (阻 )率的定义达到了一致。同时 ,根据推导出的相关公式用复数域的 Newton最速下降法给出非均匀地层条件下几种频率的测量结果 ,数值效果较好 。On the base of consideration of consistency of the definition of apparent conductivity (or resistivity) in electrical logging,we propose that the apparent concuctivity of induction tool be defined to be equal to the true conductivity in the homogeneous formation like the DC apparent conductivity, thus the apparen retsistivity of induction tool and DC apparent resistivity are unified. In fact, the definition of apparent conductivity of induction tool means that the skin effect has been corrected for the measured data. On the basis above, several stimulation examples are illustrated by the Newton steepest descent method in complex domain, and the results are so good that the new definition of the apparent conductivity in induction logging is recommended to log colleagues herein.

关 键 词：电测井 视电阻率 感应测井 趋肤效应 校正 

分 类 号：P631.811[天文地球—地质矿产勘探]