泌阳凹陷页岩储层岩石物理关键参数建模与“甜点”预测  

Modeling of key petrophysical parameters and“sweet spot”prediction for shale reservoirs in Biyang Sag

作　　者：唐军[1] 魏刚[2] 胡挺[3] 田新 龚佳 何泽 TANG Jun;WEI Gang;HU Ting;TIAN Xin;GONG Jia;HE Ze(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Oil and Gas Exploration Management Department of Sinopec He’nan Oilfield Company,Nanyang 473000,China;North China Measurement and Control Company of Sinopec Matrix Corporation,Zhengzhou 450000,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]中国石化河南油田分公司油气勘探管理部,河南南阳473000 [3]中国石化经纬有限公司华北测控公司,河南郑州450000

出　　处：《大庆石油地质与开发》2025年第2期127-135,共9页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国高校产学研创新基金项目“岩石物理虚拟实验教学设计与实践”(2023YC0062)。

摘　　要：陆相页岩非均质性强、岩性多变、储层表征参数多,构建融合储层品质和工程品质两类参数的页岩综合评估策略,是提高陆相页岩甜点预测准确度的有效途径。首先通过对比分析,明确泌阳凹陷湖相页岩与其他典型海相页岩的差异;然后建立考虑碳酸盐矿物导电性能的电阻率校正因子,根据岩心实验对系数K进行修正,改进总有机碳含量计算方法;接着利用有机质对密度与中子测井曲线的影响差异,建立饱和度非电法测井计算方法;最后引入层次分析法,优选反映页岩储层品质与工程品质两类甜点的7个参数,依据贡献程度、计算精确度和数据可靠性构建判断矩阵,形成页岩优势储层判别量化图版。依据该方法,能够将泌阳凹陷页岩优势储层准确识别,为后续勘探开发提供有利的岩石物理分析证据。Continental shale has high heterogeneity,variable lithology and many reservoir characterization parame-ters.Constructing a comprehensive shale evaluation strategy that integrates reservoir quality and engineering quality parameters is an effective way to improve prediction accuracy of continental shale sweet spots.Firstly,through com-parative analysis,differences between lacustrine shales in Biyang Sag and other typical marine shales are clarified.Then,resistivity correction factor considering electric conductivity of carbonate minerals is established and coeffi-cient K is modified based on core experiment,improving w(TOC)calculation method.After that,non-electric log-ging method is established for saturation calculation based on different influence of organic matter on density and neutron.Finally,analytic hierarchy process(AHP)is introduced to select 7 parameters reflecting 2 types of sweet spots of shale reservoir quality and engineering quality,constructing a judgment matrix in aspects of contribution degree,calculation accuracy and data reliability and forming quantitative chart for identifying favorable shale reser-voirs.This method supports accurately identification of dominant shale reservoirs in Biyang Sag,providing favor-able petrophysical analysis evidence for subsequent exploration and development.

关 键 词：泌阳凹陷 页岩 甜点预测 总有机碳含量 饱和度 层次分析法 

分 类 号：P631[天文地球—地质矿产勘探]