Influence of Neighboring Rock on Cased Crosswell Electromagnetic Logging
详细信息
- 责任者：Yu Xinjuan (Key Laboratory of Exploration Technologies for Oil and Gas Resources ; Ministry of Education ; Yangtze University ; Jingzhou 434023 ; China) ; Liu Diren
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(4)
- 关键词：电磁测井 ; electromagnetic logging
- 页码：p.654-656
- 图表：6 illus., 10 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
///On the basis of electromagnetic field theory, this paper first builds the heterogeneous casing cross-well model including borehole, casing, cement sheath, neighboring rock and targets in a condition of the heterogeneous casing cross-well low-frequency electromagnetic field, and then analyzes the effect of neighboring rock on cross-well electromagnetic logging (CWEML) by finite element method. The result shows that the effect of neighboring rock is bigger as the target stratum is thinner; and the change of electromotive force is larger when neighboring rock resistivity (Rs