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“十三五”期间我国煤层气勘探开发进展及下一步勘探方向

叶建平 侯淞译 张守仁

叶建平,侯淞译,张守仁. “十三五”期间我国煤层气勘探开发进展及下一步勘探方向[J]. 煤田地质与勘探,2022,50(3):15−22 doi: 10.12363/issn.1001-1986.21.12.0738
引用本文: 叶建平,侯淞译,张守仁. “十三五”期间我国煤层气勘探开发进展及下一步勘探方向[J]. 煤田地质与勘探,2022,50(3):15−22 doi: 10.12363/issn.1001-1986.21.12.0738
YE Jianping,HOU Songyi,ZHANG Shouren. Progress of coalbed methane exploration and development in China during the 13th Five-Year Plan period and the next exploration direction[J]. Coal Geology & Exploration,2022,50(3):15−22 doi: 10.12363/issn.1001-1986.21.12.0738
Citation: YE Jianping,HOU Songyi,ZHANG Shouren. Progress of coalbed methane exploration and development in China during the 13th Five-Year Plan period and the next exploration direction[J]. Coal Geology & Exploration,2022,50(3):15−22 doi: 10.12363/issn.1001-1986.21.12.0738

“十三五”期间我国煤层气勘探开发进展及下一步勘探方向

doi: 10.12363/issn.1001-1986.21.12.0738
基金项目: 国家科技重大专项项目(2016ZX05066);国家重点研发计划项目(2018YFB0605600)
详细信息
    第一作者:

    叶建平,1962年生,男,浙江宁海人,教授级高级工程师,从事煤层气等非常规天然气研究和技术管理工作. E-mail:yejp01@163.com

  • 中图分类号: TE132;P168.11

Progress of coalbed methane exploration and development in China during the 13th Five-Year Plan period and the next exploration direction

  • 摘要: 基于我国煤层气勘探开发项目、煤层气田生产现状以及科研技术成果的调研资料,分析了煤层气田稳产、提产综合治理技术措施,深层煤层气取得勘探突破的地质条件和潜力,支撑上述两方面进展的煤层气水平井技术以及相配套的井网优化、排采技术。结果认为,我国煤层气田稳产、低产井提产综合治理最有效的技术措施有四类,包括增加新层、调整开发方案扩大产量规模、水平井嵌入加密井网、老井增产改造技术。提出了“煤层气水平井+技术体系”概念,即水平井钻完井+套管分段压裂+无杆泵排采技术组合体系,强调在井网优化部署、钻完井、压裂工艺和排采技术设备等各个环节的相互匹配。界定了深层煤层气涵义,深层煤储层一般存在游离气,临界深度受地层温度梯度和压力影响。指出深层煤层气、低阶煤煤层气是下一步煤层气勘探重点领域和方向。

     

  • 图  1  “十三五”时期全国历年煤层气储量、产量、钻井和投资变化

    Fig. 1  Changes in coalbed methane reserves, production, drilling and investment in China during the 13th Five-Year Plan period

    图  2  潘河气田3号、15号煤层层间接替产量

    Fig. 2  Replacement production of No.3, No.15 coal seams in Panhe gas field

    图  3  柿庄南老井井网中嵌入水平井部署与TS-707H1煤层气水平井轨迹剖面图

    Fig. 3  Trajectory profile of the TS-707H1 coalbed methane horizontal well

    表  1  深层煤层气勘探基本情况

    Table  1  Basic information of deep CBM exploration projects

    参数项大宁–吉县区块白家海凸起
    盆地构造位置鄂尔多斯盆地东缘晋西挠折带西侧深部准噶尔盆地东部白家海凸起
    地层组二叠系太原组侏罗系八道湾组、西山窑组
    煤层8号煤
    煤层埋深/m2 000~2 5202 567~2 828
    煤层厚度/m4~12八道湾组平均10,西山窑组平均8
    镜质体反射率/%2.700.84
    煤体结构原生结构原生结构
    含气量/(m3·t−1)18~2613.34~16.11
    含气饱和度/%96.12~100213.78~220.08
    地层温度/℃61.3~73.480~85
    游离气存在游离气游离气占煤层总含气量的一半以上
    直井产气量/(m3·d−1)1 300~5 100彩17井8 500;彩504井7 300
    水平井产气量/(m3·d−1)1.1×104彩探1H井2×104,最高5.7×104
    其他已获探明储量压裂后自喷
    下载: 导出CSV
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  • 收稿日期:  2021-12-06
  • 修回日期:  2021-12-20
  • 刊出日期:  2022-03-01
  • 网络出版日期:  2022-03-04

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