电成像测井在砂砾岩体沉积特征研究中的应用  

Application of electrical image logging in the study of sedimentary characteristics of sandy conglomerates

作　　者：闫建平[1,2] 蔡进功[1] 赵铭海[3] 李尊芝[4] 徐冠华[1] 

机构地区：[1]同济大学海洋与地球科学学院 [2]西南石油大学资源与环境学院 [3]中国石化胜利油田地质科学研究院 [4]中国石化胜利油田临盘地质研究所

出　　处：《石油勘探与开发》2011年第4期444-451,共8页Petroleum Exploration and Development

基　　金：国家自然科学基金项目(40872089);中国石油化工股份有限公司科技局基金项目(P08039)

摘　　要：东营凹陷北部陡坡带发育各种成因类型的砂砾岩体储集层,由于物源及沉积过程复杂,利用常规测井信息难以判识其岩性及沉积微相。以盐家油田沙四段上亚段砂砾岩体为研究对象,根据微电阻率扫描成像测井(FMI)、岩心观察资料,利用岩心刻度FMI图像,分析总结砂砾岩体不同岩性、沉积构造及韵律等在FMI图像上的显示特征,并建立了具有地质意义的图像模式;在此基础上,结合常规测井、录井剖面及物性分析资料划分单井砂砾岩体地层的沉积旋回及沉积相,并确定了该区砂砾岩体的沉积相平面展布,为研究区沉积相编图及寻找有利油气储集带提供了依据。The northern steep-slope region in the Dongying Sag developed sandy conglomerate reservoirs of various origins.However,it is difficult to identify lithology and sedimentary microfacies using conventional logs owing to complex provenance and sedimentary process.The selected research object is the upper Es4 sandy conglomerate reservoir of the Yanjia Oilfield.By use of core and formation micro-resistivity imager（FMI） data,the FMI image features of lithology,sedimentary structure and rhythm of different sandy conglomerates are analyzed,and an image model of geologic significance is established.Then in combination with conventional logging,borehole log,and physical properties data,the sedimentary cycle and sedimentary facies of single well sandy conglomerate bodies are divided,and the plane distribution of sedimentary facies of sandy conglomerate bodies is concluded,which provides a basis for mapping sedimentary facies and searching for favorable hydrocarbon zones in the study area.

关 键 词：东营凹陷 盐家油田 砂砾岩 成像测井 岩性 沉积相 

分 类 号：P631.81[天文地球—地质矿产勘探]