| 新型抗弯、抗剪地面钻井井身结构研究与应用 |
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| 引用本文： | 刘应科,周福宝,刘春,胡胜勇,王圣程.新型抗弯、抗剪地面钻井井身结构研究与应用[J].中国煤炭,2012,38(1):92-95. |
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| 作者姓名： | 刘应科 周福宝 刘春 胡胜勇 王圣程 |
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| 作者单位： | 中国矿业大学安全工程学院 江苏省徐州市 221116 |
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| 基金项目： | 国家自然科学基金(固相粒子封堵含瓦斯煤(岩)裂隙的机理及应用基础:51174199) |
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| 摘 要： | 将理论分析和数值模拟相结合,分析了影响地面钻井井身结构稳定性的因素,设计了新型抗弯、抗剪井身结构,并在神华宁夏煤业集团乌兰煤矿进行了工程应用。结果表明,所设计的新型抗弯、抗剪井身结构大幅度延长地面钻井的有效抽采时间,单井最短抽采期为71d,最长抽采期达到760d,其中抽采期大于100d的钻井占钻井总数的81.8%,可以满足卸压瓦斯长期抽采的要求。
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| 关 键 词： | 地面钻井 井身结构 瓦斯抽采管 筛管 |
Study and application of new bending and shearing resistant surface borehole structure |
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| Liu Yingke
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Zhou Fubao
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Liu Chun
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Hu Shengyong
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Wang Shengcheng.Study and application of new bending and shearing resistant surface borehole structure[J].China Coal,2012,38(1):92-95. |
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| Authors: | Liu Yingke Zhou Fubao Liu Chun Hu Shengyong Wang Shengcheng |
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| Affiliation: | (School of Safety Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China) |
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| Abstract: | Theoretical analysis and numerical simulation were combined to study the influencing factors on the stability of surface borehole structure,and a new bending and shearing resistant borehole structure was designed and applied to Wulan coal mine of Shenhua Ningxia Coal Industry Group.The results showed that the new borehole structure significantly enlonged the effective gas drainage time of surface boreholes,with the shortest period of 71 days and the longest period of 760 days for one borehole.The boreholes with drainage period over 100 days accounted for 81.8%,meeting the requirements for the long-term gas drainage for the pressure relief. |
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| Keywords: | surface boreholes borehole structure pipes for gas drainage screen pipes |
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