基于物性分析建模的时频电磁反演及储层评价——以准北缘石北构造带为例  

Time-frequency electromagnetic data inversion and reservoir evaluation based on physical property analysis modeling:A case study of the Shibei structural belt on the northern margin of the Junggar Basin

作　　者：王有涛 何展翔[4,5] 陈学国 李竹强[2] 吴梦影[4,5] 曹杨 WANG Youtao;HE Zhanxiang;CHEN Xueguo;LI Zhuqiang;WU Mengying;CAO Yang(Key Laboratory of Exploration Technologies for Oil and Gas Resources,Ministry of Education,Yangtze University,Wuhan,Hubei 430100,China;Research Institute of Exploration&Development of Shengli Oilfield,SINOPEC,Dongying,Shandong 257000,China;College of Geophysics and Petroleum Resources,Yangtze University,Wuhan,Hubei 430100,China;Guangdong Provincial Key Laboratory of Geophysical High-resolution Imaging Technology,Southern University of Science and Technology,Shenzhen,Guangdong 518055,China;Department of Earth and Space Science,Southern University of Science and Technology,Shenzhen,Guangdong 518055,China;GME&Geochemical Surveys,BGP,CNPC,Zhuozhou,Hebei 072751,China)

机构地区：[1]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 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257000 [3]长江大学地球物理与石油资源学院,湖北武汉430100 [4]广东省地球物理高精度成像技术重点实验室,广东深圳518055 [5]南方科技大学地球与空间科学系,广东深圳518055 [6]东方地球物理公司综合物化探处,河北涿州072751

出　　处：《石油地球物理勘探》2022年第6期1489-1497,I0010,共10页Oil Geophysical Prospecting

基　　金：国家自然科学基金项目“深地/深海探测中强电流激发下可控源电磁法激电效应机理研究及应用”(41874085);广东省地球物理高精度成像技术重点实验室(2022B1212010002);中国石油化工股份有限公司课题“重磁电震一体化建模及预测技术研究(P21079-3)”;深圳市科技计划项目“深海深地资源探测技术系统研发”(KQTD 20170810111725321)联合资助。

摘　　要：时频电磁法(TFEM)在油气勘探中发挥着重要作用,数据反演中模型精度对反演精度影响很大,充分利用已知资料精确建模可有效降低反演的非唯一性、提高反演精度。基于准北探区实际资料,对研究区电测井数据进行高斯分布统计分析,获得各地层的电阻率均值、离差等特征数据,据此提出对研究区上、下构造层及不同地层进行分层电性建模的方法;通过火成岩储层岩石频散测试分析,获得探区不同油气饱和度火成岩的频散特性,同时依据该地区时频电磁油气检测结果与钻井含油气信息建立油气电磁属性识别模板。示例展示了通过分层建模和反演获得的电阻率和极化率剖面,以及剖面的分析、解释结果,指出了含油气有利目标。文中的建模方法和油气目标解释思路可为类似地区的油气储层评价提供有价值参考。Time-frequency electromagnetic(TFEM)method plays an important role in oil and gas exploration.In addition,model accuracy in data inversion has a great impact on the inversion accuracy.In order to effectively reduce the non-uniqueness of inversion and improve the inversion accuracy,it is necessary to make full use of existing data for accurate modeling.Based on the actual exploration data of the Northern Junggar Basin,this paper uses Gaussian distribution to statistically analyze the electrical logging data of the study area and obtains characteristic electrical data of each stratum,such as the mean value of resistivity and deviation,so as to propose a layered electrical modeling method for the upper and lower structural layers and different strata in the study area.Through the rock dispersion test of igneous greservoirs,the dispersion characteristics of igneous rock with different oil and gas saturation in the study area are obtained.Furthermore,according to the TFEM oil and gas detection results and the oil and gas information during drilling,an identification template for oil and gas electromagnetic attributes is established.The case shows the resistivity and polarization profiles obtained through layered modeling and TFEM inversion,as well as the analysis and interpretation of profiles,have identified favorable targets for hydrocarbon exploration.The modeling method and hydrocarbon target interpretation idea in the paper can provide a valuable reference for hydrocarbon reservoir evaluation in similar areas.

关 键 词：时频电磁 物性分析 分层建模 储层评价 

分 类 号：P631[天文地球—地质矿产勘探]