A decoupling model for fatigue life assessment of double wellhead system with subsea suction anchor

被引：0

作者：

Wang, Yingying ^{[1
]}

Kong, Wei ^{[1
]}

Li, Jianchang ^{[2
]}

Sun, Haibo ^{[1
]}

Li, Xingye ^{[1
]}

Wei, Qi ^{[1
]}

机构：

[1] China Univ Petr, Coll Safety & Ocean Engn, Beijing 102249, Peoples R China

[2] Nanjing Chenguang Grp Co Ltd, Nanjing 210006, Peoples R China

来源：

OCEAN ENGINEERING | 2024年 / 311卷

基金：

中国国家自然科学基金;

关键词：

Double wellhead system with suction anchor; Decoupling analysis; Fatigue life; Drilling conditions; CAISSON FOUNDATIONS; CAPACITY; INSTALLATION; STABILITY; TESTS; SAND; SOIL;

D O I：

10.1016/j.oceaneng.2024.118896

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The double wellhead system equipped with a suction anchor is subject to alternating loads, such as shear forces and bending moments, which can lead to fatigue failure. Considering the impact of the suction anchor on the subsea wellhead, an equivalent theory has been derived, and a refined equivalent model established to determine the fatigue hot spot moment-stress transfer function. To address the challenges of high computational complexity and convergence difficulties in the dynamic analysis of the refined equivalent model, a simplified theory of global coupling analysis has been derived, and a corresponding simplified subsea wellhead model established. Utilizing the environmental conditions of X gas field in China south sea, the fatigue life of the double wellhead system with suction anchor is evaluated. The results were compared with those of a conventional subsea wellhead, demonstrating that the double wellhead system with suction anchor can significantly improve fatigue life of the subsea wellhead. The fatigue life of high and low pressure welds in conventional subsea wellheads under drilling conditions has been extended from 17.77 years to 1.20 years-186.16 years and 25.62 years, respectively.

引用

页数：15

共 51 条

[1] Experimental and Numerical Investigation of the Performance of Piles and Suction Caissons Subjected to Inclined Cyclic Loading in Cohesive Soils
Al-Janabi, Husham A.
Aubeny, Charles P.
[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2022, 148 (06)
[2] Andersen M.K., 2015, Analysis of Forces in a Subsea Wellhead System Supported by NeoDrill Conductor Anchor Node
[3] [Anonymous], 2016, DNVGL-RP-C203
[4] [Anonymous], 2019, DNVGL-RP-E104
[5] The influence of wellhead stick-up on the analysis of critical stress points on conductor casing
Auad, Isabella Tomasella
Yamamoto, Marcio
Carrion, Ronaldo
[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2022, 212
[6] Simplified limit solutions for the capacity of suction anchors under undrained conditions
Aubeny, C
Murff, JD
[J]. OCEAN ENGINEERING, 2005, 32 (07) : 864 - 877
[7] A probabilistic fatigue life prediction method under random combined high and low cycle fatigue load history
Bai, Song
Huang, Tudi
Li, Yan-Feng
Lu, Ning
Huang, Hong-Zhong
[J]. RELIABILITY ENGINEERING & SYSTEM SAFETY, 2023, 238
[8] Britton J. S., 1988, SPE Drill. Eng., V3, P381, DOI DOI 10.2118/16617-PA
[9] STABILITY OF INSTALLATION OF MARINE CAISSON ANCHORS IN CLAY
BURGESS, IW
HIRD, CC
[J]. CANADIAN GEOTECHNICAL JOURNAL, 1983, 20 (03) : 385 - 393
[10] Resilience evaluation methodology of engineering systems with dynamic-Bayesian-network-based degradation and maintenance
Cai, Baoping
Zhang, Yanping
Wang, Haifeng
Liu, Yonghong
Ji, Renjie
Gao, Chuntan
Kong, Xiangdi
Liu, Jing
[J]. RELIABILITY ENGINEERING & SYSTEM SAFETY, 2021, 209

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