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首页> 外文期刊>The international journal of multiphysics >The analysis on coupling vibration of drill string and marine riser in deep-water drilling
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The analysis on coupling vibration of drill string and marine riser in deep-water drilling

机译：深水钻井中钻柱与船用立管耦合振动分析

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摘要

During drilling in the deep water, the system including marine riser and drill string over the wellhead exits strong dynamic response because of the motion of platform. The contact-collision problem between the drill string and marine riser under platform swaying is a highly non-linear dynamics problem, drill string and marine riser contact-collision position along the axis of marine riser is randomly distributed, and that there exits friction. In this paper, by using the method of finite element, the model of dynamical behavior of the system is set up, the state of contact between marine riser and drill string shows randomness. The rule of free lateral coupling vibration of drill string and marine riser has been obtained; the result shows the situation of random contact between drill string and marine rising. By case analysis the result shows that the platform swaying has great effect to the system of marine riser and drill string.
机译：在深水钻井过程中，由于平台的运动，包括船用立管和井口上方的钻柱在内的系统会产生强烈的动力响应。平台摇摆下钻柱与船用立管之间的接触碰撞问题是一个高度非线性的动力学问题，钻柱与船用立管沿船用立管轴线的接触碰撞位置是随机分布的，并且存在摩擦。本文采用有限元方法建立了系统的动力特性模型，船用立管与钻柱的接触状态呈现出随机性。得出了钻柱与船用立管自由横向耦合振动的规律。结果表明，钻柱与海平面上升无规律接触。实例分析表明，平台摇摆对船舶立管和钻柱系统有很大影响。

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