改进的微震事件反演重定位方法及其应用
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
水力压裂微地震监测资料处理解释的核心是微震事件反演定位,基于微震事件准确定位的裂缝成像结果可以为评价压裂施工效果、调整压裂设计和确定致密油气藏的开发方案等提供有效指导。为此,基于前人的研究成果,提出了改进的微震事件反演重定位方法。采取将常规的极化分析约束与空间约束相结合的思路,先对微震事件进行带极化分析约束的常规反演定位,再将走时残差目标函数加入空间约束项,对常规反演结果进行重定位。将常规方法和改进的方法应用于实际资料的微震事件反演定位并作裂缝成像,分别对压裂井中目的层段裂缝发育的走向、倾角、大小进行了描述,分析对比两种方法解释的裂缝形态,改进方法的成像结果成窄带状,收敛效果更好。
Mircoseismic event location is the core of the data processing and interpretation in hydro-fracturing microseismic monitoring.Fracture imaging based on accurate microseismic event location can provide effective guidance for evaluating fracturing effect,adjusting fracturing design and determining the exploitation plan of tight oil and gas reservoirs.Therefore,the method of improved microseismic event relocation by using polarization analysis constraint in combination with spatial constraint is presented based on the research achievements of predecessors.The event coordinates inverted by conventional microseismic event location method constrained by polarization analysis are relocated by improved microseismic event relocation method which introduces spatial constraint term to objective function only containing travel time residual.The above methods have been applied to real data in order to locate the microseismic events which are used for fracture imaging.The fracture induced by hydro-fracturing in the target layer has respectively been characterized with strike,dip,size.Then the two interpreted fracture geometries have been analytically compared to each other.The imaging results from improved method are converged to a narrow strip more effectively than those from conventional location.
引文
[1]Jupe A,Cowles J,Jones R.Microseismic monitoring:listen and see the reservoir[J].World Oil,1998,219(12):171-174
    [2]梁兵,朱广生.油气田勘探开发中的微震监测方法[M].北京:石油工业出版社,2004:1-80Liang B,Zhu G S.Microseismic monitoring methods of exploration and development in oil and gas field[M].Beijing:Petroleum Industry Press,2004:1-80
    [3]宋维琪,陈泽东,毛中华.水力压裂裂缝微地震监测技术[M].东营:中国石油大学出版社,2008:1-47Song W Q,Chen Z D,Mao Z G.Hydro-fracturing break microseismic monitoring technology[M].Dongying:China University of Petroleum Press,2008:1-47
    [4]Rutledge J T,Phillips W S.Hydraulic stimulation of natural fractures as revealed by induced microearthguakes Carthage Cotton Valley gas field,east Texas[J].Geophysics,2003,68(2):441-452
    [5]Maxwell S.Comparative microseismic interpretation of hydraulic fractures[C]∥The SPE canadian unconventional resources conference.Calgary:SPE,2012:162782
    [6]Tafti T A,Aminzadeh F.Characterizing fracture network in shale reservoir using microseimic data[C]∥The SPE western regional meeting.Bakersfield:SPE,2012:153814
    [7]董世泰,高红霞.微地震监测技术及其在油田开发中的应用[J].石油仪器,2004,18(5):5-8Dong S T,Gao H X.Microseismic monitoring technology and its application to oilfield development[J].Petroleum Instruments,2004,18(5):5-8
    [8]张山,刘清林,赵群,等.微地震监测技术在油田开发中的应用[J].石油物探,2002,41(2):226-231Zhang S,Liu Q L,Zhao Q,et al.Application of microseismic monitoring technology in development of oil field[J].Geophysical Prospecting for Petroleum,2002,41(2):226-231
    [9]刘百红,秦绪英,郑四连,等.微地震监测技术及其在油田中的应用现状[J].勘探地球物理进展,2005,28(5):325-329Liu B H,Qin X Y,Zheng S L,et al.Microseismic monitoring and its application in oilfield operations[J].Progress in Exploration Geophysics,2005,28(5):325-329
    [10]宋维琪,冯超.微地震有效事件自动识别与定位方法[J].石油地球物理勘探,2013,48(2):283-288Song W Q,Feng C.Automatic identification and localization of microseismic effective events[J].Oil Geophysical Prospecting,2013,48(2):283-288
    [11]宋维琪,刘军,陈伟.改进射线追踪算法的微震源反演[J].物探与化探,2008,32(3):274-278Song W Q,Liu J,Chen W.Microearthquake sources inversion of an improved ray tracing algorithm[J].Geophysical&Geochemical Exploration,2008,32(3):274-278
    [12]林峰,李庶林,薛云亮,等.基于不同初值的微震定位方法[J].岩石力学与工程学报,2010,29(5):996-1002Lin F,Li S L,Xue Y L,et al.Microseismic sources location methods based on different initial values[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(5):996-1002
    [13]王健,曾晓献,李振峰,等.基于走时拟合的微震源定位及拾震器布阵研究[J].吉林大学学报(信息科学版),2012,30(2):192-197Wang J,Zeng X X,Li Z F,et al.Microseismic source location positioning and distribution of seismometer on travel-time fitting[J].Journal of Jilin University(Information Science Edition),2012,30(2):192-197
    [14]尹陈,刘鸿,李亚林,等.微地震监测定位精度分析[J].地球物理学进展,2013,28(2):800-807Yin C,Liu H,Li Y L,et al.The precision analysis of the microseismic location[J].Progress in Geophysics,2013,28(2):800-807
    [15]Eisner L,Duncan P M,Heigl W M,et al.Uncertainties in passive seismic monitoring[J].The Leading Edge,2009,28(6):648-655
    [16]Fehler M,Phillips W S,House L,et al.Improved relative locations of clustered earthquakes using constrained multiple event location[J].Bulletin of the Seismological Society of America,2000,90(3):775-780
    [17]Reyes-Montes J M,Pettitt W S,Hemmings B.Application of relative location techniques to induced microseismicity from hydraulic fracturing[C]∥The SPE annual technical conference and exhibition.New Orleans:SPE,2009:124620
    [18]Fehler M,Phillips W S,House L.Improved relative locations of clustered earthquakes using constrained multiple event location[J].Bulletin of the Seismological Society of America,2000,90(3):775-780
    [19]Djurdje C,Jacek K.Taboo search:an approach to the multiple minima problem[J].Science,1995,267(3):664-671
    [20]Wong J,Han L J,Bancroft J C.Microseismic hypocenter location using nonlinear optimization[J].Expanded Abstracts of 80th Annual Internat SEG Mtg,2010,2186-2190

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心