石油物探2018，Vol.57Issue(2)：312-320,9.DOI:10.3969/j.issn.1000-1441.2018.02.017
水力压裂微地震震源定位与震源机制联合反演研究
Joint inversion of source location and microseismic focal mechanism
摘要
Abstract
In the traditional workflow for microseismic monitoring,location comes first and focal mechanism inversion second;however,this workflow may introduce location errors into the focal mechanism inversion.The method for the joint inversion of a location and focal mechanism involves discretizing the space of the location and focal mechanism simultaneously,and its computing efficiency is affected due to the large number of search grids required.Therefore,an iterative joint inversion of the location and focal mechanism is proposed.In this iterative process,the inversion result of the P-wave first-kinetic focal mechanism is used to correct the target function of the location,and then the focal mechanism is inverted using the P-wave radiation pattern as a constraint.This method can improve the accuracy of the location and focal mechanism inversion while reducing the calculation required.Tests of synthetic data and microseismic monitoring data from a fracturing well in the Sichuan Basin,China,have verified the robustness,accuracy,and efficiency of the proposed method.关键词
水力压裂/微地震监测/震源定位/震源机制反演/联合反演/迭代反演Key words
hydraulic fracturing/microseismic monitoring/source location/focal mechanism inversion/joint inversion/iterative inversion分类
天文与地球科学引用本文复制引用
李宏,杨心超,朱海波,张伟,曲寿利..水力压裂微地震震源定位与震源机制联合反演研究[J].石油物探,2018,57(2):312-320,9.基金项目
国家科技重大专项“大型油气田及煤层气开发及勘探评价-涪陵页岩气开发示范工程”(2016ZX05060-005)资助.This research is financially supported by the National Science and Technology Major Project (Grant No.2016ZX05060-005). （2016ZX05060-005）
