中国石油勘探 ›› 2018, Vol. 23 ›› Issue (2): 51-58.DOI: 10.3969/j.issn.1672-7703.2018.02.007

• 石油地质 • 上一篇    下一篇

涪陵焦石坝区块水平井组拉链压裂实践与认识

肖佳林1, 李奎东1, 高东伟2, 包汉勇3   

  1. 1 中国石化江汉油田分公司石油工程技术研究院;
    2 中石化重庆涪陵页岩气勘探开发有限公司;
    3 中国石化江汉油田分公司勘探开发研究院
  • 收稿日期:2017-10-30 修回日期:2018-02-11 出版日期:2018-03-15 发布日期:2018-03-16
  • 基金资助:
    国家科技重大专项"涪陵页岩气开发示范工程"(2016ZX05060004)。

Practice and cognition on zipper fracturing of horizontal well group in Jiaoshiba block, Fuling

Xiao Jialin1, Li Kuidong1, Gao Dongwei2, Bao Hanyong3   

  1. 1 Research Institute of Petroleum Engineering, SINOPEC Jianghan Oilfield Company;
    2 SINOPEC Chongqing Fuling Shale Gas Exploration and Development Co., Ltd;
    3 Research Institute of Exploration & Development, SINOPEC Jianghan Oilfield Company
  • Received:2017-10-30 Revised:2018-02-11 Online:2018-03-15 Published:2018-03-16
  • Supported by:
     

摘要: 涪陵页岩气田具有不同于北美页岩气区的地面和地下地质条件,山地环境下多井压裂工程设计及现场施工如何组织运行,成为实现该区域页岩气经济有效开发的关键环节。结合涪陵国家级页岩气示范区建设需求,在高效产建模式下形成了基于地质工程一体化理念的拉链压裂整体参数设计技术及运行模式。围绕全面提高页岩气单井产能,针对焦石坝区块山地"井工厂"作业需求及特点,通过压前关键地质因素识别分析、平面-横向-段间多层次工程参数设计、现场施工动态调整等方面开展工艺参数优化,创新了以交叉立体布缝为核心的拉链压裂整体参数设计技术。实现了焦石坝区块页岩气地质工程一体化开发、单井-井组批量化施工,现场推广应用200余口井累计4000余段,在增加水平井组产量、全面提高压裂时效、降低综合成本等方面效果显著,为涪陵页岩气田一期50×108m3产能高速高效建成提供了有力技术支撑。

 

关键词: 焦石坝, 页岩气, 地质工程一体化, 拉链压裂, 复杂裂缝, 多层次

Abstract: Fuling shale gas field is different from the shale gas zones in the North America in terms of surface and underground geological conditions. And the key to the economic and efficient development of shale gas in Fuling shale gas field is how to organize and conduct multi-well fracturing engineering design and field construction in the mountainous environment. The overall parameter design technology and operation mode of zipper fracturing based on the concept of geology-engineering integration was established in the pattern of efficient productivity construction according to the construction demand of Fuling national shale gas demonstration area. To increase the shale gas well productivity overall and satisfy the operational demand and characteristics of "well factory" in the mountain areas of Jiaoshiba block, the technological parameters were optimized from the aspects of prefrac key geological factor identification and analysis, areal-lateral-interval multiple level engineering parameter design, dynamic adjustment of field construction, etc, and then the overall parameter design technology of zipper fracturing with three-dimension cross fracture arrangement as the core was innovatively developed. And thus, geology-engineering integration and single well-well group batch construction are realized for the shale gas development in Jiaoshiba block. It was practically applied to over 4000 intervals in more 200 wells cumulatively. It plays a remarkable role in increasing the production rate of horizontal well group, improving the fracturing time efficiency overall and reducing the comprehensive cost. And it provides the powerful technical support for the fast and efficient productivity construction of 50×108m3 in the first stage of Fuling shale gas field.

Key words: Jiaoshiba, shale gas, geology-engineering integration, zipper fracturing, complex fracture, multiple level

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