| 穿煤层钻孔定向水压致裂的数值仿真 |
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| 引用本文： | 富向,刘洪磊,杨天鸿,杨宏伟.穿煤层钻孔定向水压致裂的数值仿真[J].东北大学学报(自然科学版),2011,32(10):1480-1483. |
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| 作者姓名： | 富向 刘洪磊 杨天鸿 杨宏伟 |
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| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳,110819
2. 煤炭科学研究总院沈阳研究院,辽宁沈阳,113001 |
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| 基金项目： | 国家重点基础研究发展计划项目(2010CB735508); 国家大型油气田及煤层气开发科技重大专项(2011ZX05041); 中央高校基本科研业务费专项资金资助项目(N090101001,N090601003) |
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| 摘 要： | 选取鸡西城山煤矿现场实例,利用RFPA2D-Flow软件模拟了穿煤层钻孔定向水压致裂全过程.分析了应力、水压的分布与变化规律,研究了损伤区域、卸压区域的形成与扩展过程.对穿煤层钻孔定向水压致裂前后煤层瓦斯抽放过程中瓦斯抽放效果及压力分布进行了对比研究.结果表明,实施定向水压致裂后压裂孔与控制孔之间的卸压区成为主要的瓦斯渗流通道,使瓦斯抽放效果显著提高.
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| 关 键 词： | 穿煤层钻孔 水压致裂 数值模拟 瓦斯抽放 |
Simulating Directional Hydraulic Fracturing Through Coal Seam Drilling Hole |
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| FU Xiang,LIU Hong-lei,YANG Tian-hong,YANG Hong-wei.Simulating Directional Hydraulic Fracturing Through Coal Seam Drilling Hole[J].Journal of Northeastern University(Natural Science),2011,32(10):1480-1483. |
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| Authors: | FU Xiang LIU Hong-lei YANG Tian-hong YANG Hong-wei |
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| Institution: | FU Xiang1,LIU Hong-lei1,YANG Tian-hong1,YANG Hong-wei2(1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China,2.Shenyang Institute,China Coal Research Institute,Shenyang 113001,China.) |
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| Abstract: | Selecting on-site case of Jixi Chengshan coal mine as an engineering example,RFPA2D-Flow software was used to simulate the entire process of the directional hydraulic fracturing through coal seam drilling hole.The distribution and change of stress and water pressure were analyzed,with the formation and expansion of the damage and pressure relief zones studied.The gas drainage effect and gas pressure distribution during the gas drainage were contrastively studied before/after directional hydraulic fracturing... |
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| Keywords: | through coal seam drilling hole hydraulic fracturing numerical simulation drainage gas |
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