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气体钻水平井岩屑运移数值模拟研究

李皋 肖贵林 李小林 李诚

李皋, 肖贵林, 李小林, 李诚. 气体钻水平井岩屑运移数值模拟研究[J]. 石油钻探技术, 2015, 43(4): 66-72. doi: 10.11911/syztjs.201504012
引用本文: 李皋, 肖贵林, 李小林, 李诚. 气体钻水平井岩屑运移数值模拟研究[J]. 石油钻探技术, 2015, 43(4): 66-72. doi: 10.11911/syztjs.201504012
Li Gao, Xiao Guilin, Li Xiaolin, Li Cheng. Numerical Simulation for Cuttings Migration during Gas Drilling of Horizontal Wells[J]. Petroleum Drilling Techniques, 2015, 43(4): 66-72. doi: 10.11911/syztjs.201504012
Citation: Li Gao, Xiao Guilin, Li Xiaolin, Li Cheng. Numerical Simulation for Cuttings Migration during Gas Drilling of Horizontal Wells[J]. Petroleum Drilling Techniques, 2015, 43(4): 66-72. doi: 10.11911/syztjs.201504012

气体钻水平井岩屑运移数值模拟研究

doi: 10.11911/syztjs.201504012
基金项目: 

国家自然科学基金重点项目"气体钻井技术基础研究"(编号:51134004)和国家科技重大专项"低渗气藏复杂地层高效钻井关键技术"(编号:2011ZX05022-005)资助。

详细信息
    作者简介:

    李皋(1976—),男,四川武胜人,1999年毕业于西南石油学院地质专业,2002年获西南石油学院地质专业硕士学位,2005年获西南石油大学油气井工程专业博士学位,副研究员,主要从事气体钻井、欠平衡钻井和储层保护方面的研究。

  • 中图分类号: TE21

Numerical Simulation for Cuttings Migration during Gas Drilling of Horizontal Wells

  • 摘要: 针对气体钻水平井过程中的井眼净化问题,开展了水平段岩屑运移特征研究。基于气固两相流动模型,采用FLUENT软件模拟了气体钻井条件下不同粒径、不同注气量、不同钻杆转速和不同钻杆偏心距下单颗粒岩屑和岩屑颗粒群在水平环空的运移特性。模拟结果表明,单颗粒岩屑在水平环空的运移以跃移形式为主,而岩屑颗粒群的运移主要包括蠕移和跃移两种形式;粒径5.0 mm岩屑在注气量50,70和90 m3/min下的首次跳跃距离分别为0.55,0.90和1.50 m;在注气量为50 m3/min时,粒径1.5 mm岩屑的首次跳跃距是粒径3.0 mm岩屑的1.5倍;粒径7.0 mm岩屑在钻杆静止和转速为60 r/min下的第3次跳跃距离分别为0.43和0.62 m;粒径6.0 mm岩屑在偏心距0,10和15 mm条件下的第2次跳跃距离分别为0.55,0.44和0.28 m。研究表明,注气量越大、粒径越小、偏心距越小、钻杆转动越快,则岩屑运移的距离越远。建议采取适当提高注气量、安装水平井井眼净化工具、提高钻杆居中度等措施,以提高井眼净化效果。

     

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出版历程
  • 收稿日期:  2014-09-22
  • 修回日期:  2015-03-31
  • 刊出日期:  1900-01-01

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