斯通利波裂缝渗透率计算模型与应用  

Calculation model and application of fracture permeability based on Stoneley wave

作　　者：陈渊博 章成广[1,2] 蔡明 张泽天[3] CHEN Yuanbo;ZHANG Chengguang;CAI Ming;ZHANG Zetian(MOE Key Laboratory of Exploration Technology for Oil and Gas Resources,Yangtze University,Wuhan 430100,China;College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Safety and Environment Protection Department,Henan Oilfield Company,SINOPEC,Nanyang 473132,China)

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]长江大学地球物理与石油资源学院,湖北武汉430100 [3]中国石化河南油田分公司安全环保部,河南南阳473132

出　　处：《断块油气田》2022年第5期609-613,640,共6页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金项目“致密储层裂缝有效性的双尺度声波测井评价方法研究”(42104126);“基于声波测井数值与实验模拟的裂缝性储层渗透率定量评价方法研究”(41774116);中国石油科技创新基金项目“碳酸盐岩水平井声波全波测井响应特征与时差及裂缝参数精细反演方法研究”(2019D-5007-0303);湖北省教育厅科学技术研究项目“鄂西页岩气藏水平井中声波测井响应正演模拟研究”(Q20211309)。

摘　　要：塔里木库车地区发育致密砂岩储层,如何准确评价储层裂缝渗透性是油田面临的主要问题。针对这一问题,利用含人工造缝岩心开展了裂缝渗透率测量实验,根据实验结果对裂缝渗透率理论公式进行刻度,结合斯通利波能量衰减系数与裂缝张开度的关系,建立了裂缝渗透率计算模型并进行应用。结果表明:实验测得裂缝渗透率与裂缝张开度具有良好的相关性;刻度后的裂缝渗透率模型计算的渗透率与试井渗透率吻合较好,裂缝渗透率评价结果与产能测试数据匹配较好。试井渗透率和厚度乘积与模型计算的平均渗透率和厚度乘积的对比结果表明,模型计算所得渗透率相对误差小于20%,满足目前裂缝渗透性评价的需求。The Kuqa area in Tarim belongs to tight sandstone reservoirs.How to accurately evaluate the permeability of reservoir fractures is the main problem faced by the oilfield.To solve the problem,a fracture permeability measurement experiment was carried out using core containing artificial fractures,and the experimental results were used to calibrate the theoretical formula of fracture permeability.Combining the relationship between Stoneley wave energy attenuation coefficient and fracture opening degree,a fracture permeability calculation model was established and applied.The results show that the experimentally measured fracture permeability has a good correlation with the fracture opening degree;the permeability calculated by the calibrated fracture permeability calculation model is in good agreement with the well test permeability,and the fracture permeability evaluation results match the test productivity data well.The comparison result of the product of permeablity and thickness by well test and the average product of permeablity and thickness calculated by this model shows that the relative error of the calculated permeability of this model is less than 20%,which meets the current fracture permeability evaluation requirements.

关 键 词：裂缝 裂缝渗透率 斯通利波 致密储层 

分 类 号：TE319[石油与天然气工程—油气田开发工程]