摘要
采用微地震定位与震源机制联合反演算法(JSSA算法)对威H3-1井的实际压裂数据进行处理,得到1507个事件的空间位置和震源机制信息。根据联合反演的震源机制信息,计算事件的P轴分布,从而解释压裂施工区域的应力分布状态。通过对压裂施工区域的综合解释分析,表明工区西侧存在较大的SN向天然裂缝,以及在水平井附近存在较小的压裂裂缝,从而达到了评价压裂效果、指导压裂施工的目的。
Through analyzing the field fracturing data of WeiH3-1 well,we obtained the spatial positions and focal mechanisms of 1507 events simultaneously by using the joint inversion algorithm(Joint Source Scanning Algorithm,JSSA).Based on the focal mechanisms of joint inversion,the P axes of events can be calculated,and the stress distribution state of the work area can be explained.Through the comprehensive interpretation and analysis of the work area,we find that there is a large-scale natural fracture with north-south trend in the west of the work area,and some small-scale fracturing fractures near the horizontal well,so as to evaluate the fracturing effect and guide the fracturing operation.
作者
余洋洋
梁春涛
杜瑶
王宇玺
庄园旭
Yu Yangyang;Liang Chuntao;Du Yao;Wang Yuxi;Zhuang Yuanxu(Sichuan Earthquake Agency,Chengdu 610041,China;Key Laboratory of Earth Exploration and Information Technique of Education Ministry of China,Chengdu University of Technology,Chengdu 610059,China)
出处
《中国地震》
北大核心
2021年第2期273-284,共12页
Earthquake Research in China
基金
国家自然科学基金(U19A2098)
四川省地震局地震科技专项(LY2104)
科技创新团队(201901)共同资助。
关键词
微地震监测
微地震定位
震源机制
应力分析
Microseismic monitoring
Microseismic location
Focal mechanism
Stress analysis
