• 责任者：Wang Chenlong (State Key Laboratory of Marine Geology ; School of Ocean and Earth Science ; Tongji University ; Shanghai 200092 ; China) ; Cheng Jiubing
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(9)
• 关键词：微震法 ; microseismic methods ; 油气勘探 ; petroleum exploration
• 页码：p.3184-3196
• 图表：illus., 2 tables, 27 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     Development and recovery of unconventional reservoir has become a new central issue of international hydrocarbon industry.For the unconventional reservoir has the characteristic of low-permeability usually,multiple stages of hydraulic fracturing are usually required to create connected cracks through which hydrocarbons can flow.We can characterize the crack attributes （i.e.,direction,density,etc.）,evaluate the effect of hydro-fracturing,analyze the rupture pattern,speculate the source mechanisms by locating and analyzing the induced microseismic events.Microseismic events locating can be achieved by using reverse-time focusing technique.But many factors such as high noise,velocity errors,and sparsely-sampled data will cause remarkable location errors.In this study,we focus on combining the reverse-time focusing technique with interferometric imaging condition,and investigate the multi-sources locating method using the multi-component data on the earth surface,in the well,and combined well and surface especially.Synthetic examples and case study reveal the advantage of suppressing artifacts and increasing accuracy.At the same time we point out the constraint of reverse-time focusing method in practical application,and provide some tactics.