地学前缘 ›› 2016, Vol. 23 ›› Issue (3): 36-40.DOI: 10.13745/j.esf.2016.03.005

• “煤层气地质与工程”特约栏目 • 上一篇    下一篇

煤系非常规天然气资源特征及分隔合采技术

傅雪海,德勒恰提·加娜塔依,朱炎铭,申建,李刚   

  1. 1. 中国矿业大学 煤层气资源与成藏过程教育部重点实验室, 江苏 徐州 221116
    2. 新疆大学 地质与矿业工程学院, 新疆 乌鲁木齐 830047
  • 收稿日期:2015-06-23 修回日期:1999-11-30 出版日期:2016-05-15 发布日期:2016-05-15
  • 作者简介:傅雪海(1965—)，男，博士，教授，博士生导师，从事能源地质教学与科研工作。E-mail：fuxuehai@163.com
  • 基金资助:

    2014年度山西省煤基重点科技攻关项目(MQ201402);新疆维吾尔自治区首批引进百名高层次人才和“天山学者”计划（教育部对口支援）资助项目

Resources characteristics and separated reservoirs drainage of unconventional gas in coal measures.

FU Xuehai, Deleqiati JIANATAYI, ZHU Yanming   

  1. 1. Key Laboratory of Coalbed Methane Resources and ReservoirFormation Process(Ministry of Education), China University of Mining & Technology, Xuzhou 221116, China
    2. College of Geology and Exploration Engineering, Xinjiang University, rümqi 830047, China
  • Received:2015-06-23 Revised:1999-11-30 Online:2016-05-15 Published:2016-05-15

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摘要：

煤系为煤层气、页岩气、致密砂岩气多层叠置的储层群(青海木里煤田侏罗纪煤系上部还有天然气水合物矿层)，海陆过渡相煤系以多层叠置页岩气与煤层气储层为主，陆相煤系以多层叠置煤层气与致密气储层为特色；煤泥砂结构系统使煤系内经常出现煤层气和页岩气的混合储层。中国煤系中煤层气资源量约为36.8×1012 m3；页岩气、致密气资源量分别约为32×1012 m3和20×1012 m3(未包括东北地区)。煤系“三气”单独开发经济效益不明显；煤系“三气”具有地面卸压带抽采和煤矿井下穿层钻孔抽采的便利条件；通过增加悬挂套管和连通管，文中设计了煤系“三气”原位分隔合采工艺技术。

关键词: 非常规天然气, 煤系, 煤层气, 页岩气, 致密砂岩气, 天然气水合物

Abstract:

Coal measures area group of multiply superposed reservoirs which contain coalbed methane, shale gas and tight sandstone gas(there is also a gas hydrate reservoir lying on the Jurassic coal seam in the Muli coalfield, Qinghai Province); the transitional coal measures mainly contain coalbed methane and shale gas;the inland coal measures feature coalbed methane and tight sandstone gas; the mixed reservoir containing coalbed methane and shale gas often appears in coal measures owing to the coalmudsand structure system. In China, coalbed methane resources are about 36.8×1012 m3; shale gas and tight gas resources are about 32×1012 m3 and 20×1012 m3 respectively in coal measure(not including the Northeast China). The economic benefit of developing three kinds of gas individually is not obvious; but it has some convenient conditions, such as stress relief with three kinds of gas drainage by vertical surface wells and by crossmeasures boreholes in underground mine. Technology of separated reservoirs drainage was designed by adding hanging case and communicating tubes.

Key words: unconventional gas, coal measure, coalbed methane, shale gas, tight sandstone gas, gas hydrate

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