利用阵列声波测井资料评价变质岩储层有效性  

Evaluation of metamorphic reservoir effectiveness by array acoustic logging data

作　　者：谭礼洪 张国强 谭忠健 张贵斌[4] 章成广[1,2] 蔡明[1,2] TAN Lihong;ZHANG Guoqiang;TAN Zhongjian;ZHANG Guibin;ZHANG Chengguang;CAI Ming(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan,Hubei 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze University),Ministry of Education,Wuhan,Hubei 430100,China;Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300459,China;China Oilfield Services Limited(COSL),Tianjin 300459,China)

机构地区：[1]长江大学地球物理与石油资源学院,湖北武汉430100 [2]油气资源与勘探技术教育部重点实验室(长江大学),湖北武汉430100 [3]中海石油(中国)有限公司天津分公司,天津300459 [4]中海油田服务股份有限公司,天津300459

出　　处：《石油地球物理勘探》2022年第6期1464-1472,I0009,共10页Oil Geophysical Prospecting

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)联合资助。

摘　　要：目前主要利用常规测井识别变质岩岩性进而评价储层,利用阵列声波测井评价变质岩储层有效性的研究较少。为此,以渤中19-6气田变质岩测井资料为基础,分析阵列声波测井的响应特征,基于常规声学参数计算提出平均衰减计算方法;通过定量研究多种声学参数与不同储层之间的相关性,提炼出对有效储层敏感的9种声学参数(纵波、横波、斯通利波的时差、阵列衰减以及平均衰减等),建立基于敏感声学参数的储层有效性评价图板与方案。利用所提方法对新井资料进行处理,并评价了储层有效性,评价结果与测试结果符合率达到91.43%,满足现场应用需求。At present,conventional logging is mainly used to identify the lithology of metamorphic rock and then evaluate the reservoirs,while array acoustic logging is seldom used to evaluate the effectiveness of metamorphic rock reservoirs.Therefore,given the logging data of metamorphic rock in Bozhong 19-6(BZ19-6)gas field,the response characteristics of array acoustic logging are analyzed,and the average attenuation calculation method is proposed on the basis of the conventional acoustic parameter calculation.By the quantitative study of the correlation between various acoustic parameters and different reservoirs,nine acoustic parameters sensitive to effective reservoirs,such as the time difference of longitudinal wave,shear wave,and Stoneley wave,array attenuation,and average attenuation,are extracted,and the evaluation chart and scheme of reservoir effectiveness based on sensitive acoustic parameters are established.The new well data are processed by the proposed method,and the reservoir effectiveness is evaluated.The coincidence rate between the evaluation results and the test results is 91.43%,which meets the field application requirements.

关 键 词：渤中19-6气田 变质岩储层 阵列声波测井 敏感声学参数 储层有效性 图板 

分 类 号：P631[天文地球—地质矿产勘探]