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孜拉山1888 m无垂深超长水平孔钻进关键技术

简阔, 马斌, 许晓晨, 陈召英, 茹忠亮, 刘晓. 2023. 孜拉山1888 m无垂深超长水平孔钻进关键技术. 钻探工程, 50(6): 100-107. doi: 10.12143/j.ztgc.2023.06.013
引用本文: 简阔, 马斌, 许晓晨, 陈召英, 茹忠亮, 刘晓. 2023. 孜拉山1888 m无垂深超长水平孔钻进关键技术. 钻探工程, 50(6): 100-107. doi: 10.12143/j.ztgc.2023.06.013
JIAN Kuo, MA Bin, XU Xiaochen, CHEN Zhaoying, RU Zhongliang and LIU Xiao, . 2023. Research on key technologies for developing multi-branched horizontal of CBM wells in low pressure and low permeability coal reservoirs. DRILLING ENGINEERING, 50(6): 100-107. doi: 10.12143/j.ztgc.2023.06.013
Citation: JIAN Kuo, MA Bin, XU Xiaochen, CHEN Zhaoying, RU Zhongliang and LIU Xiao, . 2023. Research on key technologies for developing multi-branched horizontal of CBM wells in low pressure and low permeability coal reservoirs. DRILLING ENGINEERING, 50(6): 100-107. doi: 10.12143/j.ztgc.2023.06.013

孜拉山1888 m无垂深超长水平孔钻进关键技术

详细信息
    作者简介: 简阔,男,汉族,1986年生,副教授,硕士生导师,地质资源与地质工程专业,博士,从事煤层气地质与开发技术研究工作,山西省晋城市太原科技大学晋城校区,haikuo11@163.com。

Research on key technologies for developing multi-branched horizontal of CBM wells in low pressure and low permeability coal reservoirs

  • 西藏昌都孜拉山隧道勘察水平孔设计深度1500 m,实际完钻深度1888.88 m。钻进过程中强风化破碎带地层孔壁易坍塌,硬岩地层超长水平孔钻孔轨迹控制难度大,绳索取心岩心管和打捞器推送困难,提下钻阻力大、回转扭矩大、钻具磨损严重,局部地层涌水、冲洗液漏失频发,严重影响成孔质量、施工效率和施工成本。分析了无垂深水平孔钻进过程中破碎地层孔壁失稳、钻孔轨迹偏移、钻进扭矩大、钻具磨损严重等问题产生的原因,给出了实钻过程中的解决方案和处理措施,顺利完成钻孔施工任务,积累了无垂深水平孔绳索取心钻进复杂问题处理措施和经验。
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收稿日期:  2023-03-09
修回日期:  2023-05-19

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