测井技术2017，Vol.41Issue(4)：383-388,6.
金属套管井间电磁校正方法研究
Method of Cross-well Electromagnetic Correction in Metal Casing
臧德福 1晁永胜 1李智强 2姬勇力 2郭红旗1
作者信息
- 1. 中石化胜利石油工程有限公司测井公司,山东 东营 257096
- 2. 中国电子科技集团公司第22研究所,河南 新乡 453003
- 折叠
摘要
Abstract
The electromagnetic field equations in vertical stratified media are derived from the Maxwell equations, and the analytical formula about the relations between received signals, parameters of boreholes, casing, formation and the receiver position, are obtained.The impact of mud resistivity, casing position, casing resistivity, casing magnetic permeability, cement resistivity, transmission frequency and receiver position on the received signal has been simulated.And the relation of cross-well electromagnetic to borehole media and casing has been obtained through large amounts of numerical simulation and analysis.The analyzing results show that the influence of the borehole mud and cement resistivity on received signals could be ignored.Metal casing plays a significant role in received signals.When the distance of two wells is larger than 20 m, the receiving signals could be calibrated by built database while the metal casing's position, thickness, conductivity, and permeability and transmitting frequency are determined.The difference is within 1% between the data calibrated and data without metal casing.关键词
测井方法/井间电磁/金属套管/频率/井间距/校正/数值模拟Key words
logging methodology/cross-well electromagnetic/metal casing/frequency/cross-well distance/calibration/numerical simulation分类
天文与地球科学引用本文复制引用
臧德福,晁永胜,李智强,姬勇力,郭红旗..金属套管井间电磁校正方法研究[J].测井技术,2017,41(4):383-388,6.
