海上深水钻井隔水管振动特性研究

Study on vibration characteristic of deepwater drilling riser

针对海上深水钻井隔水管特点和实际钻井作业中的具体情况,建立了深水钻井隔水管受力模型,并通过能量法求解得到了较为精确的隔水管挠曲变形方程;在此基础上,采用结构力学研究和分析方法,得到了深水钻井隔水管固有频率的简便计算方法和表达式。本文所提出的海上深水钻井隔水管振动特性分析方法简便易行,对指导室内设计和现场作业有重要意义。

The mechanics model of deepwater drilling riser is built based on the characteristics of the riser and its circumstances in actual drilling operations, and a more precise deflection equation for the riser is obtained by energy method. And through structural mechanics analysis, the natural frequency of the drilling riser is calculated by simple expression. The method for analyzing vibration characteristic of deepwater drilling riser proposed in the paper is easy to use and has an important significance in the design and operation of deepwater drilling riser.