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新型斜控PDC钻头冠形设计与破岩机理研究

田家林,  刘刚,  杨琳,  吴纯明,  杨志,  袁长福,  付传红,  李友

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文章导航 > 机械科学与技术  > 2015 >  34(12): 1813-1818
田家林, 刘刚, 杨琳, 吴纯明, 杨志, 袁长福, 付传红, 李友. 新型斜控PDC钻头冠形设计与破岩机理研究[J]. 机械科学与技术, 2015, 34(12): 1813-1818. doi: 10.13433/j.cnki.1003-8728.2015.1202
引用本文: 田家林, 刘刚, 杨琳, 吴纯明, 杨志, 袁长福, 付传红, 李友. 新型斜控PDC钻头冠形设计与破岩机理研究[J]. 机械科学与技术, 2015, 34(12): 1813-1818. doi: 10.13433/j.cnki.1003-8728.2015.1202
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Tian Jialin, Liu Gang, Yang Lin, Wu Chunming, Yang Zhi, Yuan Changfu, Fu Chuanhong, Li You. Crown-shaped Design and Rock-breaking Mechanism of New-style PDC Bit with Whipstocking Controllability[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(12): 1813-1818. doi: 10.13433/j.cnki.1003-8728.2015.1202
Citation: Tian Jialin, Liu Gang, Yang Lin, Wu Chunming, Yang Zhi, Yuan Changfu, Fu Chuanhong, Li You. Crown-shaped Design and Rock-breaking Mechanism of New-style PDC Bit with Whipstocking Controllability[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(12): 1813-1818. doi: 10.13433/j.cnki.1003-8728.2015.1202
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新型斜控PDC钻头冠形设计与破岩机理研究

doi: 10.13433/j.cnki.1003-8728.2015.1202
  • 1.

    西南石油大学 机电工程学院, 成都 610500;

  • 2.

    西南交通大学 机械工程学院, 成都 610031

基金项目: 

石油天然气装备教育部重点实验室开放课题(OGE201403-05)、国家自然科学基金项目(51074202,11102173)及四川省教育厅成果转化重大培育项目(12ZZ003)资助

详细信息
    作者简介:

    田家林(1979-),副教授,博士,研究方向为井下工具、钻井动力学及理论,tianjialin001@gmail.com,309009838@qq.com

Crown-shaped Design and Rock-breaking Mechanism of New-style PDC Bit with Whipstocking Controllability

  • 1.

    School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China;

  • 2.

    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China

    摘要
  • 摘要: 针对新型油气资源开采的复杂条件,为提高新形势下定向井造斜段井眼质量,提出一种新型斜控PDC钻头。首先根据刀翼线型轮廓设计准则,突破现有锥形心部曲线的局限,将传统锥形心部曲线变为圆弧过渡型曲线;综合考虑影响钻头造斜能力的关键因素,结合布齿参数与钻井实际工况,建立切削齿破岩过程的力学分析模型,然后在此基础上分析钻头造斜易控特性。研究结果表明:传统PDC钻头的锥形心部是制约钻头偏转的关键因素,钻头心部曲线变为圆弧轮廓后,其偏转易控特性得到较大提升。同时通过现场试验,将新型斜控PDC钻头与现有钻头的造斜段钻进性能进行对比,分析其定向钻进的破岩特性与造斜能力。研究结论对钻头破岩机理的研究及定向井技术的发展具有重要的参考价值。
    Abstract: Aiming at the complex exploitation conditions of new-type oil and gas resources, we put forward a new-style PDC bit with whipstocking controllability to improve the wellborn quality of directional well on whipstocking segment. First, according to the design criterion of blade linear contour, we change the traditional conical curve on bit central pilot into the circular arc transitional curve which breaks through the limitations of traditional conical curve. Considering the key factors which affect the drill deflection ability, we established the mechanics analysis model of cutting teeth combined with cloth tooth parameters and actual drilling conditions, and then analyze bit whipstocking controllability. The research results show that: the heart conical curve of traditional PDC bit is the key factor to restrict bit deflection; its deflection ability has been improved a lot after changing conical curve into circular arc contour. Meanwhile, according to field test, we conducte the comparison between new-style PDC bit with whipstocking controllability and conventional PDC bit, and analyze the rock-breaking characteristic and deflecting ability. Findings above have important reference value for the research of rock-breaking mechanism and the development of directional drilling technology.
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    • 参考文献(20)
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出版历程
  • 收稿日期:  2015-03-31
  • 刊出日期:  2015-12-05

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