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渝东南地区常压页岩气勘探开发进展及下步攻关方向

云露 高玉巧 高全芳

云露, 高玉巧, 高全芳. 渝东南地区常压页岩气勘探开发进展及下步攻关方向[J]. 石油实验地质, 2023, 45(6): 1078-1088. doi: 10.11781/sysydz2023061078
引用本文: 云露, 高玉巧, 高全芳. 渝东南地区常压页岩气勘探开发进展及下步攻关方向[J]. 石油实验地质, 2023, 45(6): 1078-1088. doi: 10.11781/sysydz2023061078
YUN Lu, GAO Yuqiao, GAO Quanfang. Progress and research direction of normal-pressure shale gas exploration and development in southeastern Chongqing[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(6): 1078-1088. doi: 10.11781/sysydz2023061078
Citation: YUN Lu, GAO Yuqiao, GAO Quanfang. Progress and research direction of normal-pressure shale gas exploration and development in southeastern Chongqing[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(6): 1078-1088. doi: 10.11781/sysydz2023061078

渝东南地区常压页岩气勘探开发进展及下步攻关方向

doi: 10.11781/sysydz2023061078
基金项目: 

国家重大科技专项 2016ZX05061

中国石化科技部项目 P21087-6

详细信息
    作者简介:

    云露(1972—),男,博士,正高级工程师,从事石油地质综合研究。E-mail: yunl.xbsj@sinopec.com

  • 中图分类号: TE132.2

Progress and research direction of normal-pressure shale gas exploration and development in southeastern Chongqing

  • 摘要: 四川盆地及其周缘发育高压和常压2种页岩气藏类型。近年来,中国石化华东油气分公司立足于渝东南盆缘复杂构造区及盆外褶皱带开展常压页岩气技术攻关,经过十余年的探索攻关,常压页岩气勘探开发取得了重大进展,形成了相对完善的常压页岩气地质理论认识及工程工艺技术系列。与高压页岩气相比,常压页岩气具有构造复杂、保存条件差异大、地应力变化快等特点,为加快对该类页岩气的勘探开发,从地质特征、富集规律、勘探开发效果等方面,系统总结了渝东南地区常压页岩气勘探开发进展及认识:①深水陆棚相控制常压页岩气优质页岩展布,多期构造作用控制了构造样式、裂缝及地应力差异性分布,保存条件具有自东向西、由南往北逐渐变好的变化规律;②构建了4种常压页岩气聚散模式,有效指导了勘探部署,盆缘地区落实了平桥、东胜、阳春沟3个千亿立方米增储区带,发现了南川常压页岩气田,盆外地区明确了武隆、道真、老厂坪等一批有利目标;③制定了常压页岩气开发技术政策,明确产能主控因素,实现了效益开发。通过系统总结渝东南地区前期成果认识和勘探开发经验,分析面临的挑战,明确了下步攻关方向,可为中国南方同类地区常压页岩气效益开发提供借鉴。

     

  • 图  1  渝东南地区位置

    Figure  1.  Location of southeastern Chongqing

    图  2  渝东南地区常压页岩气勘探开发历程

    Figure  2.  Exploration and development history of normal-pressure shale gas in southeastern Chongqing

    图  3  渝东南地区及周边重点钻井五峰组—龙马溪组一段连井剖面

    剖面位置见图 1

    Figure  3.  Well connection profile of important wells in Wufeng Formation-Member 1 of Longmaxi Formation in southeastern Chongqing and surrounding area

    图  4  渝东南地区五峰组—龙马溪组一段沉积微相连井对比

    Figure  4.  Well connection contrasts of sedimentary microfacies in Wufeng Formation-Member 1 of Longmaxi Formation in southeastern Chongqing

    图  5  渝东南地区不同构造带岩性组合特征

    Figure  5.  Lithology combination characters in different tectonic zones of southeastern Chongqing

    图  6  渝东南南川地区五峰组底面构造及地应力平面图

    Figure  6.  Structural map and distribution of in-situ stress of the bottom of Wufeng Formation in Nanchuan area of southeastern Chongqing

    表  1  渝东南南川地区平桥开发分区特征

    Table  1.   Characteristics of Pingqiao development zonation in Nanchuan area of southeastern Chongqing

    项目 背斜主体 背斜两翼 南斜坡
    地质特征 埋深/m 2 500~3 700 3 700~4 200 2 500~3 700
    压力系数 1.2~1.32 1.3~1.32 1.1~1.2
    地应力/MPa 60~80 80~110 70~80
    生产特征 初期 日产气/104 m3 8.6 7.9 9.2
    套压/MPa 27.5 15.3 16.2
    稳产期 日产气/104 m3 6.8 5.3 4.6
    压降/(MPa/d) 0.15 0.18 0.22
    稳产期/年 3 1.4 1
    阶段累产/104 m3 6 954 2 628 1 920
    递减期 初始递减率/% 34.8 46.8 59.3
    压降/(MPa/d) 0.009 0.007 0.005
    阶段累产/104 m3 6 646 4 472 4 800
    递减期占比/% 48.5 62.9 73.8
    平均EUR/108 m3 1.36 0.71 0.65
    下载: 导出CSV
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  • 收稿日期:  2023-09-08
  • 修回日期:  2023-10-19
  • 刊出日期:  2023-11-28

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