• Pick up drill stem test tool.

    提起测试工具

    blog.sina.com.cn

  • DST (drill Stem test), a fast test for show of oil and gas while drilling.

    中途测试,是指油井在钻井过程有。

    www.iciba.com

  • The longer the single drill pipe, the lesser the critical compressive force of drill stem.

    钻杆单根长度越长所能承受的临界载荷

    www.chemyq.com

  • Drill stem tests are taken from some Wells almost immediately after drilling and completion operations.

    有些进行完井作业,就立即采取钻杆测试

    www.dictall.com

  • Therefore the nonlinear lateral free vibration of drill stem is investigated by the perturbation method.

    分析公式表明,横向线性振动钻柱横向非线性振动一种特殊情况;

    epub.cnki.net

  • The influence of the initial deflection on the nonlinear lateral free vibration of drill stem is discussed.

    讨论了弯曲横向非线性振动影响

    dict.cnki.net

  • On the basis of energy method, the possibility of drill stem buckling in inclined straight hole is studied.

    本文应用虚位移原理,充分考虑柱所处特殊环境的基础上,考察了斜直井眼中钻柱屈曲可能性

    dict.cnki.net

  • The rotary drill stem will engender direction drift in rotary drilling of directional well and cluster well.

    定向井转盘钻进旋转产生方位漂移

    dict.cnki.net

  • A new method for calculating drill stem strength can be applied to designing and checking strength of drill stem.

    提出了一种强度计算方法用于钻柱强度设计强度校核

    dict.cnki.net

  • In this paper, the problem about stability of the drill stem in the borehole with iso-curvature is studied by use of energy method.

    文中利用能量研究了曲率眼中稳定性问题

    dict.cnki.net

  • This paper discusses the prediction of the drill stem torque and bit forward direction in an offshore horizontal well by nonlinear FEM.

    探讨非线性有限元预测水平井钻进中的扭矩钻头前进方向的应用。

    dict.cnki.net

  • In order to enhance the service hfe of hollow steel for rock drill stem, the odd number side section shape hollow steel has been designed.

    为了提高凿岩钎中空使用寿命,设计了奇数截面形状的中空钢。

    www.chemyq.com

  • The Numbers of half wave are related with the length of drill stem, the nature of geometry and material of drill stem and the rock coefficient.

    长度几何参数材料性质地层弹性系数有关

    dict.cnki.net

  • It is very important for improving drilling rate, reducing drilling cost and safety drilling to carry out drill stem failure analysis and prevention.

    开展油田钻失效分析预防提高钻井速度降低钻井成本井下安全钻进具有重要意义。

    dict.cnki.net

  • Drill stem test plays an important role in drilling operation. It is easy to fail or to cause complicated down hole situations if conducted improperly.

    中途测试钻井施工中具有重要作用,如果测试措施不到位,容易导致测试失败发生钻井复杂情况

    www.chemyq.com

  • The research indicated that the critical compressive force of drill stem in horizontal well is closely related with the length of single drill pipe in use.

    研究表明水平井眼中所能承受临界载荷使用钻杆单根长度密切关系

    www.chemyq.com

  • The effect of initial deflection on the first frequency increased with either the length of drill stem or the axial compressive force on the drill stem increases.

    柱横向非线性振动随着弯曲最大挠度增大而减小,初弯曲钻柱横向非线性振动基频的影响随钻柱长度增大而增大,随轴向压力的影响而增加。

    dict.cnki.net

  • This paper describes how the rotary drilling stem lost its stability in detail, and presents the main factors influencing drill stem stability in rotary condition.

    系统地进行了斜直井旋转状态下钻柱稳定性的试验研究描述了旋转稳的过程,分析了旋转状态下影响稳定性主要因素

    www.chemyq.com

  • The utility model relates to a combined flaw detection transporting device for a drill stem or a pipe joint, particularly a curved combined flaw detection transporting device.

    实用新型涉及钻杆导管接头探伤检验组合输送装置尤其涉及曲线式探伤检验组合输送装置。

    ip.com

  • The drilling circles generally considers that for the drill stem in crooked hole, the phenomenon of losing stability will not happen, but a detail theoretical proof is not seen.

    钻井普遍认为弯曲井眼中钻不会发生现象见到详细理论论证

    zuci.chaziwang.com

  • Considering the complex influence factors for the failure of drill stem, an analytic model for failure of drill stem based on support vector machine and cluster analysis theory was established.

    针对钻具失效影响因素比较复杂问题,建立了基于支持向量聚类分析理论的钻具失效原因分析模型

    www.dictall.com

  • Considering the complex influence factors for the failure of drill stem, an analytic model for failure of drill stem based on support vector machine and cluster analysis theory was established.

    针对钻具失效影响因素比较复杂问题,建立了基于支持向量聚类分析理论的钻具失效原因分析模型

    www.dictall.com

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