石油地球物理勘探2025，Vol.60Issue(3)：806-816,11.DOI:10.13810/j.cnki.issn.1000-7210.20240417
时频电磁法三维自适应有限元正演及含油储层灵敏度分析研究
Three-dimensional adaptive finite element forward modeling of time-frequency electromagnetic method and sensitivity analysis of oil-bearing reservoirs
摘要
Abstract
The time-frequency electromagnetic method is widely used in the field of oil and gas exploration.Three-dimensional forward modeling can obtain the electromagnetic response of the three-dimensional electrical structure of subsurface,serving as an essential tool for qualitative interpretation of electromagnetic data and ob-servation system design for electromagnetic exploration,as well as the basis for three-dimensional inversion.This paper utilizes a three-dimensional adaptive finite element forward modeling algorithm of the time-fre-quency electromagnetic method to solve the second-order partial differential equations that the electric field sati-sfies and estimate the posterior error based on the continuity conditions of the electromagnetic field.This guides the adaptive refinement of the mesh,achieving efficient and accurate simulation of the electromagnetic re-sponse.Compared to traditional forward modeling methods,this approach effectively reduces computational load while ensuring accuracy.Numerical examples validate the accuracy and efficiency of the algorithm.Addi-tionally,simulations of oil and gas models are conducted to analyze the sensitivity of time-frequency electromag-netic responses to reservoirs.This study provides significant reference for oil and gas exploration with the help of the time-frequency electromagnetic method.关键词
时频电磁法/三维正演/自适应有限元/油气勘探/电磁响应Key words
time-frequency electromagnetic method/three-dimensional forward modeling/adaptive finite ele-ment/oil and gas exploration/electromagnetic response分类
天文与地球科学引用本文复制引用
李宗杰,蔡盼盼,李清坤,秦策,高文龙,王绪本..时频电磁法三维自适应有限元正演及含油储层灵敏度分析研究[J].石油地球物理勘探,2025,60(3):806-816,11.基金项目
本项研究受中国石化科技部项目"超深碳酸盐岩油气藏地震—电磁联合描述技术研究"(P22875)资助. （P22875）
