水下采油树与永久导向基座对接过程的动力特性

doi:10.7623/syxb202203009

石油学报 ›› 2022, Vol. 43 ›› Issue (3): 420-431.DOI: 10.7623/syxb202203009

水下采油树与永久导向基座对接过程的动力特性

王莹莹¹, 王名春², 杨钟山¹, 刘文涛³, 罗文涛¹, 尹建喜¹, 胡洋东¹

1. 中国石油大学(北京)安全与海洋工程学院北京 102200;
2. 中海油研究总院有限责任公司北京 100028;
3. 深圳海油工程水下技术有限公司广东深圳 518267

收稿日期:2021-06-03 修回日期:2022-01-26 发布日期:2022-04-06
通讯作者: 王莹莹,女,1982年8月生,2012年获中国石油大学(北京)博士学位,现为中国石油大学(北京)安全与海洋工程学院副教授、博士生导师,主要从事水下装备结构研发、安装水动力及可靠性评价研究工作。
作者简介:王莹莹,女,1982年8月生,2012年获中国石油大学(北京)博士学位,现为中国石油大学(北京)安全与海洋工程学院副教授、博士生导师,主要从事水下装备结构研发、安装水动力及可靠性评价研究工作。Email:wyy@cup.edu.cn
基金资助:
国家自然基金面上项目"大型水下管汇多体耦合系统安装姿态控制规律研究"(No.52071336)、渤海油田七年行动计划重大专项"简易水下井口和采油树风险评价及安全可靠性分析"(2019CCL2019RCPS0180RCN)和中海石油(中国)有限公司生产科研项目"国内外采油树类型及安装方案研究和水下采油树安装受力分析技术服务"(2020Z20AZFNS0438)资助。

Dynamic characteristics of subsea Christmas tree in the process of docking with permanent guide base

Wang Yingying¹, Wang Mingchun², Yang Zhongshan¹, Liu Wentao³, Luo Wentao¹, Yin Jianxi¹, Hu Yangdong¹

1. College of Safety and Ocean Engineering, China University of Petroleum, Beijing 102200, China;
2. CNOOC Research Institute Co., Ltd., Beijing 100028, China;
3. COOEC Subsea Technology Co., Ltd., Guangdong Shenzhen 518267, China

Received:2021-06-03 Revised:2022-01-26 Published:2022-04-06

摘要/Abstract

摘要： 永久导向基座(PGB)是保证水下采油树在海底与水下井口对接的重要基础结构,因对接过程中波流扰动复杂,给水下采油树的安装带来巨大挑战和安全隐患。建立了工程船-钢丝缆绳-水下采油树-永久导向基座的耦合系统受力分析模型,基于微元法和六自由度方程分别对钢丝缆绳和水下采油树进行了动态响应分析。同时,针对南海X油田实际海况建立了水下采油树与PGB对接过程的数值模型,对最为危险的第Ⅰ阶段和第Ⅱ阶段开展了不同海流对水下采油树安装姿态和PGB的受力影响分析,揭示了导向桩出现压顶或脱离现象的机理成因,探究了不同对接阶段船舶升沉与海流激励下水下采油树与永久导向基座对接过程的动态响应规律,并选取不同时期工况对PGB进行了强度校核。结果表明,在第Ⅰ阶段,采油树更易与PGB 1号导向桩产生压顶和脱离现象;在第Ⅱ阶段,采油树更易与PGB 4号导向桩产生压顶和脱离现象;两个阶段PGB的导向桩均满足强度要求,处于安全工况。研究结果已在中国南海油田采油树PGB导向安装中得到有效应用。

关键词: 水下采油树, 永久导向基座, 安装姿态, 压顶和脱离, 动态响应

Abstract: Permanent guide base (PGB) is an important basic structure that guarantees the successful docking between subsea Christmas tree and subsea wellhead. Due to complex wave flow disturbance in the docking process, a great challenge and safety risk are encountered during the installation of a subsea Christmas tree. In view of this, the paper establishes the force analysis model of ship-wire rope-subsea Christmas tree-PGB coupled system, and analyzes the dynamic responds of wire rope and subsea Christmas tree using infinitesimal method and six-free-degree equation, respectively. Meanwhile, a numerical model for the process of connecting subsea Christmas tree and PGB has been established according to the actual sea conditions of an oil-gas field in the South China Sea. For the most dangerous stage Ⅰ and stage Ⅱ, this paper analyzes the stressing influence of different sea currents on the installation posture of subsea Christmas tree and PGB, reveals the causes and mechanism for topping and detachment of the guide pile, explores the dynamic response regularity of subsea Christmas tree and PGB in the docking process under the incentive of ship heaving and sea current at different stages of docking, and checks PGB intensity according to the working conditions of different periods. The results shows that the topping and detachment of No. 1 and 4 guide pile is easily to occur in stage Ⅰ and stage Ⅱ, respectively; in these two stages, the guide piles of PGB can both meet strength requirements, thus guaranteeing the safe working conditions. These research results have been effectively applied in the guiding installation of PGB in an oilfield of the South China Sea.

Key words: subsea Christmas tree, permanent guide base, installation posture, topping and detachment, dynamic response

中图分类号:

TE42

王莹莹, 王名春, 杨钟山, 刘文涛, 罗文涛, 尹建喜, 胡洋东. 水下采油树与永久导向基座对接过程的动力特性[J]. 石油学报, 2022, 43(3): 420-431.

Wang Yingying, Wang Mingchun, Yang Zhongshan, Liu Wentao, Luo Wentao, Yin Jianxi, Hu Yangdong. Dynamic characteristics of subsea Christmas tree in the process of docking with permanent guide base[J]. Acta Petrolei Sinica, 2022, 43(3): 420-431.

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水下采油树与永久导向基座对接过程的动力特性

Dynamic characteristics of subsea Christmas tree in the process of docking with permanent guide base

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