Locating Microseismic events using elastic wave-equation migration operators
作者单位：Institute of Geology and Geophysics Chinese Academy of Sciences
会议名称：《2014年中国地球科学联合学术年会——国际专题（2）Microseismic Monitoring and Inversion》
会议日期：2014年
学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程]
摘 要：Microseismic monitoring is a widely used measurement tool for hydraulic fracturing,and become more and more important in the oil and gas *** pre-existing fracture networks in the target formation are reactivated due to stress changed which is caused by high pressure fluid *** order to characterize the fracture network,researchers assume that the microseismic hypocenters can directly reveal the geometry of the fluid flowing *** methods usually need to pick first arrival P and S waves and propagate these picked arrival time by ray tracing(Warpinski ***.,2005;Rentsch,2007).If the data has low S/N ratio,then it is a not an easy task for first arrival picking(Bose et al.,2009).Reverse time migration is a common technique