水力压裂储层孔隙度计算方法

周晓华,孟文博,甘棣元（吉林大学仪器科学与电气工程学院,吉林长春130026）

摘要：孔隙度是对水力压裂施工进行评价的一个重要参数,为准确地计算压裂后储层孔隙度,结合储层压裂前初始孔隙度的测井结果和微地震监测技术的监测结果提出一种水力压裂储层孔隙度计算的新方法三首先对储层孔隙度的计算方法进行分析,然后结合微地震监测技术的监测结果进行新计算方法的推导,最后以一次压裂实验后目标储层孔隙度计算过程为例,证明该计算方法的有效性三结果表明：相较于测井法,利用压裂前测井参数和压裂后微地震监测结果结合的方法能够有效避免压裂对孔隙度测量二计算的影响,计算结果能更合理地反映压裂后储层的孔隙度三关键词：孔隙度;水力压裂;测井信息;微地震监测

文献标志码：A 文章编号：1674-5124(2017)09-0013-05

Calculation method of porosity of hydraulic fracturing reservoir

ZHOU Xiaohua,MENG Wenbo,GAN Diyuan （College of Instrumentation &Electrical Engineering,Jilin University,Changchun 130026,China）

Abstract:Porosity is an important parameter for the evaluation of hydraulic fracturing.In order to accurately calculate the porosity of fractured reservoir,a new method of calculating porosity of hydraulic fracturing reservoir is proposed by combining the logging results of the initial porosity before fracturing and the monitoring results of micro -seismic monitoring technology.The calculation method of reservoir porosity is analyzed,and then combined with the monitoring results of micro-seismic monitoring technology,the new calculation method is deduced.Finally,the effectiveness of the calculation method is proved by the calculation process of the reservoir porosity after primary fracturing experiment.The results show that compared with the logging method,the method of combining the logging parameters before fracturing and the micro-seismic monitoring results after fracturing can effectively avoid the influence of fracturing on the measurement and calculation of porosity,and the calculation results can reflect the porosity of the fractured reservoir more reasonably.Keywords:porosity;hydraulic fracturing;logging information;micro-seismic monitoring

收稿日期：2017-02-20；收到修改稿日期：2017-04-19

基金项目：国家自然科学基金项目（41204069）;吉林省教育厅十二五科学技术研究项目联合资助（吉教科合字[2015]476号）作者简介：周晓华（1981-）,女,内蒙古乌兰察布市人,副教授,博士,主要从事被动源勘探技术与地震信号处理研究三中国测试CHINA MEASUREMENT &TEST Vol.43No.9September ，2017

第43卷第9期2017年9月doi ：

10.11857/j.issn.1674-5124.2017.09.003