| 刘巨保,丁皓江.间隙元在钻柱瞬态动力学分析中的应用[J].计算力学学报,2002,19(4):456~460471 |
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| 间隙元在钻柱瞬态动力学分析中的应用 |
| An application of gap element to the transient dynamics analysis of drillstring |
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| DOI：10.7511/jslx20024096 |
| 中文关键词: 间隙元 钻柱 瞬态动力学 石油钻井工程 冲量定理 有限元 非线性 |
| 英文关键词:drillstring,dynamics,impact and contact,finite element method |
| 基金项目: |
| 刘巨保 丁皓江 |
| [1]大庆石油学院机械系，黑龙江安达151400 [2]浙江大学土木工程系，浙江杭州310027 |
| 摘要点击次数: 1525 |
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| 中文摘要: |
| 为了描述钻柱与井壁的随机碰撞接触状态，本文构造了动力间隙元，并推导了动力间隙元的相对压缩量和迭代求解格式。把动力间隙元与梁单元相结合，采用Newmark直接积分法和冲量定理，进行了钻柱碰撞接触非线性瞬态动力学分析。经工程应用表明，构造的动力间隙元能够描述钻柱的碰撞接触状态，所设计的偏心防斜钻具已在大庆油田得到应用，取得了明显的经济和社会效益。 |
| 英文摘要: |
| In order to describe the random impact and contact between the drillstring and the hole wall, the dynamic gap element is developed and its relative compression and corresponding iterative formulation are derived. Through that the dynamic gap element is connection with the beam element, the nonlinear transient dynamics of impact and contact for the drillstring is analyzed by using the direct integral method of Newmark and the impulsive theorem. From the applications in engineering, it indicates that the gap element presented can describe the impact and contact state of the drillstring, basically. The eccentric BHA designed has been widely used in Daqing oil field, thus the remarkable economic and social benefit are given. |
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