深海石油管柱下放过程力学分析

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中图分类号：TE951 文献标志码：A doi：10.3969/j.issn.1001-3482.2025.06.003

文章编号：1001-3482（2025）06-0024-06

Abstract： When cond ucting deep-sea tubing string lowering operations in marine environments and directional wells，thereisahigh probabilityof string failure，whichcan lead to failedoil extraction， increased maintenance costs，and environmental problems.Therefore，based on the extreme wave and flow velocity environment that occur once a year in the South China Sea，a simulation model for deep sea tubing strings and directional wells was established using the finite element analysis software Abaqus.The influence of different ship positioning deviations on the mechanical characteristics of the string system was investigated when strings were lowered in open watersand entered the directional well. The results indicatethatif theship is tooclose to the axis of theverticalsectionof thedirectional well，it will cause a sharp increase in the maximum equivalent stress of the string system. In order to ensure the safety of the string lowering process，it is necessary to pause the lowering to release the elastic strain energy of the string system.The research conclusion of this article provides a theoretical basis for ship positioning during the process of lowering deep-sea string systems.

Key words： ship positioning ; deep-sea ;tubing string; finite element method; mechanical response

随着陆地石油储量的逐步下降，探索和开发海洋深处的石油资源，正逐渐变成全球各国关注的焦点[1-2]。（剩余6987字）