四川盆地威远页岩气藏高效开发关键技术

伍贤柱

伍贤柱. 四川盆地威远页岩气藏高效开发关键技术[J]. 石油钻探技术, 2019, 47(4): 1-9. doi: 10.11911/syztjs.2019074
引用本文: 伍贤柱. 四川盆地威远页岩气藏高效开发关键技术[J]. 石油钻探技术, 2019, 47(4): 1-9. doi: 10.11911/syztjs.2019074
WU Xianzhu. Key Technologies in the Efficient Development of the Weiyuan Shale Gas Reservoir, Sichuan Basin[J]. Petroleum Drilling Techniques, 2019, 47(4): 1-9. doi: 10.11911/syztjs.2019074
Citation: WU Xianzhu. Key Technologies in the Efficient Development of the Weiyuan Shale Gas Reservoir, Sichuan Basin[J]. Petroleum Drilling Techniques, 2019, 47(4): 1-9. doi: 10.11911/syztjs.2019074

四川盆地威远页岩气藏高效开发关键技术

doi: 10.11911/syztjs.2019074
基金项目: 

中国石油集团天然气有限公司川渝威远页岩气风险合作开发项目资助

详细信息
    作者简介:

    伍贤柱(1963—),男,四川开江人,1983年毕业于西南石油学院钻井工程专业,教授级高级工程师,主要从事钻井技术、井控技术管理。系本刊编委。E-mail:wuxianzhu1@163.com

  • 中图分类号: TE37

Key Technologies in the Efficient Development of the Weiyuan Shale Gas Reservoir, Sichuan Basin

  • 摘要: 威远页岩气藏地质条件复杂,工程技术面临很大挑战,因此,通过地质和工程技术的相互融合,以“选好区、打准层、压好井、采好气”为核心,从地质评价及井位部署优化、水平井优快钻井及精准地质导向、水平井体积压裂、排采及动态分析等4个关键环节入手进行技术攻关,形成了适合威远页岩气藏勘探开发的6项关键技术,即页岩气高产区带评价与优选技术、复杂地表条件下一体化井位部署与优化、长水平段丛式水平井高效钻井完井技术、页岩甜点录井辅助地质导向技术、页岩气体积压裂技术、排采测试及气藏开发动态分析技术。6项关键技术在威远页岩气藏开发中得到推广应用并不断完善,开发效果不断提高,主力产层龙一11小层的钻遇率达到98%,钻井周期缩短至69.2 d,测试产量达到19.7×104 m3/d,单井最终可采储量增至10 482×104 m3。6项关键开发技术为威远页岩气藏的高效开发提供了技术支持,且技术的适应性不断增强。
  • 图  1  威远页岩气藏主要构造体系

    Figure  1.  Main structural system of Weiyuan shale gas reservoir

    图  2  威远某平台布井方式示意

    Figure  2.  Schematic diagram of the wells arrangement of a Weiyuan well-pad

    图  3  双二维井眼轨道示意

    Figure  3.  Schematic diagram of double two-dimensional wellbore trajectory

    图  4  威远五峰组—龙马溪组地球化学标准层序

    Figure  4.  Geochemical standard sequence of Weiyuan Wufeng-Longmaxi Formations

    图  5  威远X井随钻地质导向模型

    Figure  5.  Geosteering model while drilling of Well Weiyuan X

    图  6  威远页岩水力裂缝扩展与形态判别

    Figure  6.  Hydraulic fracture propagation and pattern discrimination of Weiyuan shale

    图  7  威远页岩气区块主要钻井试采指标

    Figure  7.  Main drilling and pilot production indicators in Weiyuan shale gas block

    表  1  威远区块不同类别井年产量递减率

    Table  1.   Annual production decline rate of different well types in Weiyuan Block

    井类别产量/(104m3·d–1递减率,%
    第1年第2年
    Ⅰ类14.26 5.3962.2
    Ⅱ类6.592.5860.8
    Ⅲ类3.851.7155.6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-03-20
  • 网络出版日期:  2019-07-23
  • 刊出日期:  2019-07-01

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