特种油气藏 ›› 2022, Vol. 29 ›› Issue (5): 154-160.DOI: 10.3969/j.issn.1006-6535.2022.05.022

• 钻采工程 • 上一篇    下一篇

页岩气体积改造人工缝网优化设计

蒋海1, 肖阳2,3, 王栋4, 刘子平1, 王家豪2, 赵地1, 邹龙庆1   

  1. 1.中国石油川庆钻探工程公司,四川 成都 610051;
    2.成都理工大学,四川 成都 610059;
    3.成都理工阳光能源科技有限公司,四川 成都 610059;
    4.揭阳中石油昆仑燃气有限公司,广东 揭阳 515300
  • 收稿日期:2021-10-26 修回日期:2022-07-23 发布日期:2023-01-10
  • 作者简介:蒋海(1982—),男,高级工程师,2004年毕业于西南石油学院石油与天然气工程专业,2009年毕业于西南石油大学油气田开发专业,获博士学位,现从事试油压裂技术管理工作。
  • 基金资助:
    国家自然科学基金青年科学基金“多尺度多场应力耦合致密砂岩体积改造裂缝评价模型研究”(51504042);国家科技重大专项“鄂南致密低渗油藏水力压裂裂缝起裂及扩展规律”(2016ZX05048-001-04-LH);四川省教育厅基金重点项目“自流注水关键节点仿真及流动耦合计算模型研究”(18ZA0063)

Optimal Design of Artificial Fracture Network for Shale Gas Volume Stimulation

Jiang Hai1, Xiao Yang2,3, Wang Dong4, Liu Ziping1, Wang Jiahao2, Zhao Di1, Zou Longqing1   

  1. 1. CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan 610051, China;
    2. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Sunshine Energy Technology Co., Ltd. of Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    4. Jieyang PetroChina Kunlun Gas Co., Ltd., Jieyang, Guangdong 515300, China
  • Received:2021-10-26 Revised:2022-07-23 Published:2023-01-10

摘要: 威远页岩气区块储层致密,天然裂缝局部发育,储层非均质性较强,常规的水平井分段压裂技术无法满足产能需求。针对该问题,以威AH1平台为例,基于地质工程一体化技术思路,综合地质属性模型和地质力学模型,建立了威AH1平台的一体化压裂模型。利用模型对压裂排量、压裂液量、砂比、分簇数量、支撑剂配比与注入方式进行了分析,确定了压裂施工最优化参数。该研究结果在威AH1平台应用了8口井,与压裂前相比,日产气量提高了30%。该研究可为威远地区页岩气一体化开发提供技术支持。

关键词: 页岩气, 体积压裂, 人工缝网, 支撑面积, 威远地区

Abstract: Due to the tight reservoirs in the Weiyuan shale gas block, the local development of natural fractures, and the strong reservoir heterogeneity, the conventional horizontal well staged fracturing technology cannot meet the productivity demand. To address the problem, taking Wei AH1 platform as an example, an integrated fracturing model for the Wei AH1 platform was established based on the technical idea of integrated geological engineering, geological property model and geomechanical model. The model was used to analyze the fracturing displacement, fracturing fluid volume, sand ratio, number of clusters, proppant ratio and injection method, and to determine the optimal parameters of fracturing operation. The research results were applied to 8 wells on the Wei AH1 platform, and the daily gas production was increased by 30% compared with that before the fracturing. This research can provide technical support for the integrated development of shale gas in Weiyuan Area.

Key words: shale gas, volume fracturing, artificial fracture network, support area, Weiyuan Area

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