NUMERICAL SIMULATION OF MICROSEISMIC WAVEFIELDS WITH MOMENT-TENSOR SOURCES

摘要：

Microseismic monitoring has been a key technology in the exploitation of unconventional reservoirs.Numerical simulation of various types of microseismic sources is the foundation for source location and source mechanism inversion.In this paper,equations of equivalent body forces with stress components and particle velocity components are derived,then they are included in the finite difference method (FDM) to simulate moment-tensor sources.The microseismic wavefields of different moment-tensor sources in three-dimensional isotropic media and transversely isotropic media with a vertical symmetry axis (VTI) are simulated and analyzed.Through the forward modeling of surface star-array monitoring,the feasibility of source mechanism inversion with P-wave first motion for surface microseismic monitoring has been preliminarily demonstrated.

关键词： Microseismic monitoring FDM Moment-tensor Three-dimensional VTI

作者: Lei LI Hao CHEN Xiu-ming WANG

作者单位: Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, P. R. China;University of Chin Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, P. R. China

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 339-343

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）