海洋工程装备与技术

海洋工程装备与技术 ›› 2023, Vol. 10 ›› Issue (2): 14-21.doi: 10.12087/oeet.2095-7297.2023.02.03

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水下井口及配套工具压力测试工装设计与分析

耿亚楠, 王名春1 , 孙翀1 , 张会增1 , 赵维青2 , 赵苏文2* , 李健2 , 胡晓宇3   

  1. 1. 中海油研究总院有限责任公司, 北京 100028; 2. 中海油能源发展股份有限公司工程技术深水钻采技术公司, 广东 湛江 524057; 3. 中国石油大学海洋油气装备与安全技术研究中心, 山东 青岛 266580
  • 出版日期:2023-07-02 发布日期:2023-07-02

Design and Analysis of the Pressure Test Facilities of Subsea Wellhead and Supporting Tools

GENG Yanan1 , WANG Mingchun1 , SUN Chong1 , ZHANG Huizeng1 ,ZHAO Weiqing2 , ZHAO Suwen2 , LIJian2 , HU Xiaoyu3   

  1. 1. CNOOC ResearchInstitute Co . , Ltd . , Beijing100028 , China ; 2. Engineering Technology Branchof CNOOC Energy Development Corporation, Zhanjiang Guangdong524057 , China ; 3. Centerfor Offshore Equipmentand Safety Technology at China Universityof PetroleumQingdao Shandong266580 , China
  • Online:2023-07-02 Published:2023-07-02

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摘要： 水下井口是深水油气钻井作业的关键装备, 承受复杂多变的内压和外部载荷。 目前, 主要通过理论分析和数值模拟的方法, 对水下井口进行强度分析。 但缺乏水下井口压力测试的专用测试工装, 无法真实反映水下井口系统及其配套工具承压作业时的安全性。 针对此问题, 本文考虑水下井口系统作业过程中的不同作业工况, 针对水下井口不同作业阶段的内压载荷, 分别设计了相应的专用测试工装。 为保证工装结构的测试稳定性, 采用有限元分析方法, 建立测试工装有限元模型, 开展了不同测试载荷下工装结构的力学响应分析。 分析结果表明, 水下井口专用测试工装能够开展不同作业阶段的承压能力测试, 在测试过程中, 工装结构各部件应力均未超出材料屈服强度。 本研究可为水下井口测试工装的结构设计和优化分析提供技术支持。

关键词: 水下井口, 压力测试工装, 强度分析;Ansys Workbench

Abstract: Subsea wellheads subjected to complex internal pressure and external loads is the key equipment for deepwater oil and gas development. Currently, stability of subsea wellhead and corresponding supporting tools are mainly assessed by theoretical analysis and numerical simulation. Due to lack of pressure test tools, the actual structure responses of subsea wellhead and corresponding supporting tools could not be reflected. In this work, specialized tools aiming attesting the internal pressure of subsea wellhead and corresponding supporting tools are designed with consideration of different operation conditions and loads. Additionally, for guaranteeing the security of test tools during test experiments, mechanical strength analysis is carried out by establishing related finite element model. Simulation results show that bearing capacity test could be implemented in safety using the designed test tools, and the stress are lower than the yielding strength of test tools. The research could provide technical support for the structural design and optimization analysis of the subsea wellhead test tool.

Key words: subsea wellhead, pressuretesttool, strengthanalysis, Ansys Workbench