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气侵钻井过程中井底衡压的节流阀开度控制研究

孔祥伟 林元华 邱伊婕 袁继明

孔祥伟, 林元华, 邱伊婕, 袁继明. 气侵钻井过程中井底衡压的节流阀开度控制研究[J]. 应用数学和力学, 2014, 35(5): 572-580. doi: 10.3879/j.issn.1000-0887.2014.05.011
引用本文: 孔祥伟, 林元华, 邱伊婕, 袁继明. 气侵钻井过程中井底衡压的节流阀开度控制研究[J]. 应用数学和力学, 2014, 35(5): 572-580. doi: 10.3879/j.issn.1000-0887.2014.05.011
KONG Xiang-wei, LIN Yuan-hua, QIU Yi-jie, YUAN Ji-ming. Research on the Throttle Valve Opening Degree Control to Keep Bottomhole Pressure in Balance When Gas Influx Occurs During Drilling Operations[J]. Applied Mathematics and Mechanics, 2014, 35(5): 572-580. doi: 10.3879/j.issn.1000-0887.2014.05.011
Citation: KONG Xiang-wei, LIN Yuan-hua, QIU Yi-jie, YUAN Ji-ming. Research on the Throttle Valve Opening Degree Control to Keep Bottomhole Pressure in Balance When Gas Influx Occurs During Drilling Operations[J]. Applied Mathematics and Mechanics, 2014, 35(5): 572-580. doi: 10.3879/j.issn.1000-0887.2014.05.011

气侵钻井过程中井底衡压的节流阀开度控制研究

doi: 10.3879/j.issn.1000-0887.2014.05.011
基金项目: 国家科技重大专项(2011ZX05022-005-005HZ);国家自然科学基金(51274170)
详细信息
    作者简介:

    孔祥伟(1982—),男,黑龙江大庆人,博士生(通讯作者. E-mail: 76922591@qq.com);

  • 中图分类号: O352

Research on the Throttle Valve Opening Degree Control to Keep Bottomhole Pressure in Balance When Gas Influx Occurs During Drilling Operations

Funds: The National Science and Technology Major Project of China(2011ZX05022-005-005HZ);The National Natural Science Foundation of China(51274170)
  • 摘要: 基于钻井中的多相流控制体方程,建立了井底衡压的节流阀套压补偿控制模型,通过节流阀的实时调节可补偿气相滑脱压降,使井底压力与地层压力保持平衡.结果表明,气侵发现得越早,井底衡压控制越容易实现,气侵早期发现依靠井底气侵监测装置;当发现井底气侵时,大幅调节节流阀开度,使节流阀产生的套压快速平衡地层压力,此时根据井底欠压差的变化调节节流阀;随气体沿环空上移,微调节流阀开度,实时平衡气体滑脱产生的压降,此时调节节流阀依靠补偿控制模型;随气体循环出井口,环空中呈现0气流,节流阀开度及套压趋于稳定.
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出版历程
  • 收稿日期:  2013-11-06
  • 修回日期:  2014-03-03
  • 刊出日期:  2014-05-15

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