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基于cohesive单元海域天然气水合物储层水力压裂模拟

蒋亚峰, 田英英, 李小洋, 韩泽龙, 张欣, 赵明, 刘聃, 尤志伟, 梁金强, 黄伟. 2023. 基于cohesive单元海域天然气水合物储层水力压裂模拟. 钻探工程, 50(1): 18-25. doi: 10.12143/j.ztgc.2023.01.004
引用本文: 蒋亚峰, 田英英, 李小洋, 韩泽龙, 张欣, 赵明, 刘聃, 尤志伟, 梁金强, 黄伟. 2023. 基于cohesive单元海域天然气水合物储层水力压裂模拟. 钻探工程, 50(1): 18-25. doi: 10.12143/j.ztgc.2023.01.004
JIANG Yafeng, TIAN Yingying, LI Xiaoyang, HAN Zelong, ZHANG Xin, ZHAO Ming, LIU Dan, YOU Zhiwei, LIANG Jinqiang and HUANG Wei, . 2023. Numerical simulation of hydrate reservoir hydraulic fracturing based on cohesive units. DRILLING ENGINEERING, 50(1): 18-25. doi: 10.12143/j.ztgc.2023.01.004
Citation: JIANG Yafeng, TIAN Yingying, LI Xiaoyang, HAN Zelong, ZHANG Xin, ZHAO Ming, LIU Dan, YOU Zhiwei, LIANG Jinqiang and HUANG Wei, . 2023. Numerical simulation of hydrate reservoir hydraulic fracturing based on cohesive units. DRILLING ENGINEERING, 50(1): 18-25. doi: 10.12143/j.ztgc.2023.01.004

基于cohesive单元海域天然气水合物储层水力压裂模拟

  • 基金项目:

    国家重点研发计划项目“天然气水合物勘查开发技术联合研究”(编号:2018YFE0208200); 国家自然科学基金青年基金项目“海洋天然气水合物保压取样球阀密封失效机理及优化设计研究”(编号:42102352);中国地质调查局地质调查项目“深海钻探工程关键技术支撑”(编号:DD20221721)

详细信息
    作者简介: 蒋亚峰,男,汉族,1993年生,助理工程师,地质工程专业,硕士,从事海洋钻探新技术、新设备、新工艺的研发工作,河北省廊坊市广阳区金光道77号,jiangyafeng12@gmail.com
  • 中图分类号: P634;TE37

Numerical simulation of hydrate reservoir hydraulic fracturing based on cohesive units

  • 天然气水合物作为一种高效清洁能源,广泛分布于我国南海海域的沉积地层中。我国先后于2017年和2020年成功开展了2次试开采,但由于海域天然气水合物特殊的赋存条件,单井水合物试采仍然面临着开采范围小、高产稳产时间短等问题。为了提高水合物的开采范围,基于cohesive单元进行了水合物储层二维水力压裂数值模型研究,比较了100 m×100 m和20 m×20 m两种模型的裂缝半长和宽度,得出了当注入压力为25 MPa时,压裂裂缝半长均为6 m,最大宽度分别为5.8、5.5 mm,构建尺寸较大的模型得出的实验结果更加准确。并且研究了裂缝宽度随注入时间的变化规律,随着注入压力和注入量的不断增加,初期裂缝宽度急速变大,后续在地应力和注入流体压力的共同作用下裂缝出现“阶梯式”的扩展规律。该研究在页岩气和煤层气等非常规能源储层水力压裂模型分析中得到了成功运用,为海域天然气水合物储层水力压裂提供一定的理论指导。
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出版历程
收稿日期:  2022-05-19
修回日期:  2022-08-30

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