南华北盆地中牟地区太原组页岩气储层特征及甜点段优选  

Shale gas reservoirs characteristics and sweet spot selection of Taiyuan Formationin Zhongmou area ,the South of North China Basin

作　　者：汪超 袁青松 孙均 冯辉 赵百顺 董果果 王中英 WANG Chao;YUAN Qingsong;SUN Jun;FENG Hui;ZHAO Baishun;DONG Guoguo;WANG Zhongying(Henan Yukuang Geological Prospecting Investment Co.,Ltd.,Zhengzhou 450001,Henan,China;Zhongyuan Energy and Min-ing Investment and Development Co.Ltd,Zhengzhou 450001,Henan,China;Henan Academy of Geology.Zhengzhou 450001,Henan,China;Exploration Research Institute of China Petroleum&Chemical Corporation Exploration Branch,Chengdu 610041,Sichuan,China;Henan Provincial Resources and Environment Survey Institute Co.,Ltd.,Zhengzhou 450001,Henan,China)

机构地区：[1]河南豫矿地质勘查投资有限公司,河南郑州450001 [2]中原能矿投资开发有限公司,河南郑州450001 [3]河南省地质研究院,河南郑州450001 [4]中国石油化工股份有限公司勘探分公司勘探研究院,四川成都610041 [5]河南省资源环境调查四院有限公司,河南郑州450001

出　　处：《矿产勘查》2023年第9期1652-1660,共9页Mineral Exploration

基　　金：河南省重大科技专项“河南页岩气勘查开发及示范应用研究(151100311000)”;河南省地质研究院地质科技攻关项目“基于气液两相流的煤系气合层共采工艺动态调控机理研究(2023-331-XM026-KT04)”联合资助。

摘　　要：页岩气作为一种非常规油气资源,已成为中国天然气增储上产的重要接替对象。本文以南华北盆地中牟地区重点探井中牟2井为研究对象,分析了太原组储层地质特征,基于实验测试分析、显微薄片鉴定、测井解释评价以及沉积微相等研究手段,在泥页岩储层精细分析评价的基础上,将中牟地区石炭系太原组泥页岩划分为3大段、7小层。通过小层综合对比分析显示:太原组潮坪相页岩层段②~④小层具有高TOC含量(平均3.24%)、高脆性矿物含量(平均54.5%)、高孔隙度(平均1.8%)、高含气量(平均1.45 m^(3)/t)及高全烃显示(1.89%)的“五高”特征,据此将②~④小层优选为太原组页岩气储层甜点段,研究成果可为下一步中牟地区水平井部署及水平段穿行层位优选提供指导。As an unconventional oil and gas resource,shale gas has become an important replacement for China's natural gas reserves and production.In this paper,the geological characteristics of Zhongmu No.2 well in Zhongmu area of Southern North China Basin was taken as the research target,and the geological characteristics of Taiyuan Formation reservoir are analyzed.Based on the experimental test analysis,microscopic thin section identification,logging interpretation and evaluation and sedimentary microfacies research methods,on the basis of fine analysis and evaluation of shale reservoir,the shale of Carboniferous Taiyuan Formation in Zhongmu area was divided into three sections and seven layers.Through comprehensive comparative analysis,it showed that the shale sections of the 2-4 small layers of Taiyuan Formation had the characteristics of'five highs'with high TOC content(average3.24%),high brittle mineral content(average54.5%),high porosity(average1.8%),high gas content(average1.45 m^(3)/t)and high total hydrocarbon(average1.89%).Based on this,the 2-4 small layers were prefer⁃ably selected as the sweet spots of the shale gas reservoir of Taiyuan Formation,which could provide guidance for the deployment of horizontal wells in Zhongmu area and the optimization of horizontal sections.

关 键 词：南华北盆地 中牟地区 太原组 泥页岩储层 甜点段 

分 类 号：P631.4[天文地球—地质矿产勘探]