致密裂缝储层双侧向测井侵入响应数值模型  

Numerical model of dual laterolog intrusion response in tight fractured reservoir

作　　者：吴进波 陈鸣 许巍[2] 孙殿强 杨冬 杨红斌[3] WU Jinbo;CHEN Ming;XU Wei;SUN Dianqiang;YANG Dong;YANG Hongbin(Zhanjiang Branch of Cnooc (China) Ltd. , Guangdong Zhanjiang 524057, China;Geophysics & Oil Resources Department, Yangtze University, Wuhan 430100, China;School of Petroleum Engineering, China University of Petroleum(East China), Shandong Qingdao 266580, China)

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]长江大学地球物理与石油资源学院,武汉430100 [3]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《非常规油气》2022年第4期32-36,共5页Unconventional Oil & Gas

基　　金：油气资源与勘探技术教育部重点实验室开放基金项目“基于岩心复电阻率频谱的油气评价方法研究”(K2018-12);油气资源与探测国家重点实验室开放基金项目“油气储层电频谱探测特性及导电机理研究”(PRP/open-1704);中海油综合科研项目“双孔介质储层测录井综合评价技术与作业方案优化研究”(YXKY-2021-ZJ-01)。

摘　　要：为了评价裂缝储层泥浆侵入程度,针对水层及油层不同侵入情况,构建了一种考虑泥浆侵入的裂缝储层双侧向测井有限元模型,并基于裂缝地层宏观各向异性电导率张量分析了裂缝的影响。模拟结果表明,在高矿化度地层模型中,双侧向测井深浅探测视电阻率值呈“负差异”,而在高阻油气储层模型中,双侧向测井深浅探测视电阻率值呈“正差异”。随着泥浆侵入深度的增大,双侧向测井深浅探测视电阻率值差异先增大后减小,对比而言,深探测值对泥浆侵入更加敏感。文中数值模拟结果为利用双侧向测井评价潜山储层裂缝提供了理论基础和模型基础。In order to evaluate the degree of mud intrusion in fractured reservoir,a dual laterolog finite element model was constructed considering mud intrusion in different water and oil reservoirs,and the influence of fractures was analyzed based on the macroscopic anisotropic conductivity tensor of fractured formation.The simulation results show that the apparent resistivity values of dual laterolog depth and shallowness are“negative difference”in the high salinity formation model,and“positive difference”in the high resistivity oil and gas reservoir model.With the increase of mud intrusion depth,the apparent resistivity value difference of dual laterolog depth detection increases first and then decreases,and the deep detection value is more sensitive to mud intrusion.The numerical simulation results provide a theoretical and model basis for evaluating fractures in buried hill reservoir by dual laterolog.

关 键 词：裂缝储层 双侧向测井 有限元 数值模拟 

分 类 号：P631.3[天文地球—地质矿产勘探]