深层地应力地理方位确定的新方法  

A NEW METHOD FOR DETERMINATION OF GEOGRAPHIC ORIENTATION OF DEEP FORMATION GEOSTRESS

作　　者：卢运虎[1] 陈勉[1] 金衍[1] 吴文[2] 张家振[3] 李远[4] 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249 [2]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [3]川庆钻探工程有限公司钻采工程技术研究院,四川广汉618300 [4]北京科技大学土木与环境工程学院,北京100083

出　　处：《岩石力学与工程学报》2011年第2期233-237,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226700);教育部新世纪优秀人才支持计划项目(NCET–08–0840)

摘　　要：地应力地理方位是合理井网布置、水力压裂设计、复杂结构井定向方位优选及安全钻井液密度窗口确定的重要基础参数。针对室内地应力测试方法对非定向岩芯无法确定水平地应力地理方位的难题,利用深部地层岩芯的黏滞剩磁分量标定岩芯的地理方位;同时对标定岩芯开展围压下的声发射Kaiser试验,测量出水平地应力大小和相对方位;最终确定出最大、最小地应力的地理方位。该方法解决Kaiser试验地应力地理方位无法确定的难题,完善深层地应力测试方法,可为钻井工程和油田增产措施优化设计提供基础的数据。Geographic orientation of geostress is an important basic parameter for reasonable well layout,hydraulic fracturing design,optimization of directional orientation of complex structural well and determination of safe drilling fluid density window. According to the problems that laboratory geostress testing methods can not determine the geographic orientation of horizontal geostress for nondirectional cores,the geographic orientation of cores is calibrated by using viscous remanent magnetization component;the acoustic emission Kaiser test under confining pressures for calibrated cores is carried out so as to determine the magnitude and relative orientation of horizontal geostress. Eventually,the geographic orientations of the maximum and minor principal geostresses are determined. This method solves the problem that the geographic orientation of geostresses can not be determined by using Kaiser test and improves the testing methods of geostress in deep formation. Meanwhile,it provides basic data for drilling engineering and optimization of oilfield stimulation.

关 键 词：石油工程 地应力测量 KAISER效应 黏滞剩磁 地理方位 

分 类 号：TD311[矿业工程—矿井建设]