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Do We Need an Intelligent Makeup Solution for Modern Rotary Shouldered Connections?

机译:我们是否需要智能化妆解决方案来实现现代旋转肩部连接?

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The accurate makeup of Rotary Shouldered Connections (RSC) is a critical step in optimizing the connection lifetime under complex downhole conditions. The makeup torque value of RSC depends on the friction coefficient of the assembly and the lubricant, which cannot normally be individually measured or determined, so that the API RP7G gives a recommended makeup torque based upon an assumed, yet constant, friction coefficient while a certain safety margin is considered. Therefore, the field induced stress state of the connection may differ from the connection optimum torque under reference conditions. This will lead to the following consequences: the lifetime of each connection is not maximized based on its drillstring position and the torque and axial force that can be transferred through the connection is different from the technical maximum limit. Due to the technological development, a wide spectrum of power tongs can accommodate the increasing interest in mechanized operations at the rig floor today. The importance of a torque-turn recording was stated in many papers as a good control method of the makeup process, especially for casing running applications. However, we believe that the reliability of a drill string can be improved by using feed back of torque turn recordings. State-of-the-art devices not only allow the precise mechanized makeup of connections, but they also provide sufficient data to analyze the quality of the connection make-up. The motivation behind the research is the desire to make use of the data that is already provided for the benefit of increased lifetime of the connections and the reduction of drill string failures, especially for drilling under extreme downhole conditions like long horizontal, HPHT or deep water. This paper presents a short overview of the state-of-the-art of current technology followed by a discussion of how technological advances can be used to improve the drill string reliability. Also, the readers are challenged to find the answer to the title question: "Do we need an Intelligent Makeup Solution for Rotary Shouldered Connections?"
机译:旋转肩部连接(RSC)的准确构成是在复杂的井下条件下优化连接寿命的关键步骤。 RSC的化妆扭矩值取决于组件和润滑剂的摩擦系数,它们不能正常被单独测量或确定,使得API RP7G基于假设但恒定的摩擦系数给出推荐的化妆扭矩,同一定的情况下考虑安全保证金。因此,该磁场引起的连接应力状态可以与参考条件下的连接最佳扭矩不同。这将导致以下后果:基于其钻井位置,并且可以通过连接的扭矩和轴向力来最大化每个连接的寿命与技术最大限度不同。由于技术开发,广泛的动力钳可以适应今天钻机在钻井平台上的机械化运营的兴趣日益幅度。扭矩匝数记录的重要性在许多纸张中陈述了化妆过程的良好控制方法,特别是对于套管运行应用。然而,我们认为可以通过使用扭矩匝数记录的回料来改善钻柱的可靠性。最先进的设备不仅允许确切的机械化构成连接,而且还提供足够的数据来分析连接化妆的质量。研究背后的动机是希望利用已经提供的数据,该数据是为了增加连接的寿命和钻弦故障的减少,特别是在像长水平,HPHT或深水一样在极端井下条件下钻井。本文介绍了当前技术最先进的技术概述,然后讨论如何使用技术进步来提高钻弦可靠性。此外,读者受到挑战,以找到标题问题的答案:“我们是否需要旋转肩部连接的智能化妆解决方案?”

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