天然气地质学

全球致密砂岩气盆地参数统计分析

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  • 1.中国石油大学油气资源与探测国家重点实验室,北京 102249;
    2.中国石油大学非常规天然气研究院,北京 102249;
    3.中国石油勘探开发研究院,北京 100083;
    4.东北石油大学地球科学学院,黑龙江 大庆 163318
李耀华(1987-),男,黑龙江大庆人,博士研究生,主要从事非常规油气成藏与资源评价研究. E-mail:majing06@126.com.

收稿日期: 2017-03-11

  修回日期: 2017-05-03

  网络出版日期: 2017-06-10

基金资助

国家自然科学石油化工联合基金重点项目“非常规油气富集机制与地球物理甜点识别”(编号:U1562215);国家科技重大专项“大型油气田及煤层气开发”(编号:2011ZX05028-002)联合资助.

Parameters statistic analysis of global tight sand gas basins

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  • 1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China;
    2.Unconventional Natural Gas Institute,China University of Petroleum,Beijing 102249,China;
    3.PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083,China;
    4.School of Earth Sciences,Northeast Petroleum University,Daqing 163318,China

Received date: 2017-03-11

  Revised date: 2017-05-03

  Online published: 2017-06-10

摘要

利用美国西部落基山地区7个致密砂岩气盆地(Washakie、Uinta、Piceance、Greater Green River、Wind River、Powder River、Sand Wash)的常规孔隙度(2 100点)、常规渗透率(2 073点),分析致密砂岩物性参数的概率特征,结合国内的典型致密砂岩气藏(鄂尔多斯盆地苏里格气田上古生界储层)覆压基质渗透率和孔隙度数据对其致密特征进行验证,在此基础上提出统计学范畴的致密气定义:“如果覆压基质渗透率值累加概率在80%范围内都小于0.1×10-3mm2,可认为是典型致密储层,部分高于此值则为过渡状态,对应孔隙度界限值可为10%”。在全球范围内选出7个大区的44个致密砂岩气盆地,典型致密储层评价单元的物性参数分布规律符合致密气统计学定义,同时按照“全球”“大区”“国家”“盆地”级别分别对“盆地类型”“沉积环境”“评价时代”“源岩时代”“源岩岩性”“源岩类型”“源岩成熟度”“储层平均埋深”“评价面积”“其他机构资评结果”“开发程度”等盆地参数进行数据挖掘,旨在弄清在全球范围内致密砂岩气盆地各项参数的分布特征,结合全球板块构造学说、层序地层学说、致密砂岩气成藏机制和富集规律,对各个参数的统计规律进行分析论证。

本文引用格式

李耀华,宋岩,姜振学,王朋岩,赵荣,刘顺宇,阴丽诗 . 全球致密砂岩气盆地参数统计分析[J]. 天然气地球科学, 2017 , 28(6) : 952 -964 . DOI: 10.11764/j.issn.1672-1926.2017.05.007

Abstract

Statistical definition of “tight gas” is proposed based on the probabilistic characteristics of the conventional porosity(2 100 points) and permeability(2 073 points)in seven tight sand gas basins,Western Rocky Mountain area,USA(Washakie,Uinta,Piceance,Greater Green River,Wind River,Powder River,Sand Wash).It can be verified by analyzing the porosity and permeability data of Sulige tight sand gas field,Ordos Basin: “Reservoir is tight if 80% accumulation probability of conventional permeability is less than 0.1×10-3μm2,corresponded with the porosity of 10%”.Based on this,44 typical tight sand gas basins are selected for the data-mining of the basin parameters in global range,which are graded as the sequence of “global”-“continental”-“national”-“basinal”,aiming to analyze the probability distribution rule of the tight sand gas basin parameters.

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