长江大学学报（自然科学版）2024，Vol.21Issue(5)：56-65,10.
基于自动正则化的井间电磁成像方法
Cross-well electromagnetic imaging method based on automatic regularization
高国忠 1冯晓钰 1白彦 2陈涛 2王剑2
作者信息
- 1. 长江大学地球物理与石油资源学院,湖北武汉 430100
- 2. 中国石油集团测井有限公司,陕西西安 710076
- 折叠
摘要
Abstract
Cross-well electromagnetic technology can be used to obtain high-resolution resistivity images between wells,which is of great significance for monitoring formation fluid changes and enhancing oil and gas recovery.In this paper,a resistivity imaging method based on rigorous 2.5-dimensional electromagnetic modeling and inversion is developed using the Gauss-Newton method with a multiplicative cost function and automatic regularization.The regularization parameter is related to the data cost function such that it will be reduced automatically with the data cost function,and stop at the noise level to avoid the overfitting of the data.The tests on stratified formations and formations with abnormal bodies show that the method can achieve accurate resistivity imaging between wells.The cross-well resistivity imaging method is used to invert the electromagnetic data acquired by the newly developed cross-well electromagnetic imaging prototype instrument in Xinan region,and the imaging results are in good agreement with the resistivity curves of two wells,which verifies the effectiveness of the instrument,as well as the cross-well resistivity imaging method.关键词
井间电磁成像/乘积性代价函数/自动正则化/高斯牛顿法Key words
cross-well electromagnetic imaging/multiplicative cost function/automatic regularization/Gauss Newton method分类
能源科技引用本文复制引用
高国忠,冯晓钰,白彦,陈涛,王剑..基于自动正则化的井间电磁成像方法[J].长江大学学报（自然科学版）,2024,21(5):56-65,10.
