天然气与石油2024，Vol.42Issue(6)：106-113,8.DOI:10.3969/j.issn.1006-5539.2024.06.012
深水钻井表层作业井口稳定性影响因素分析
Analysis of factors affecting the wellhead stability during surface operations in deepwater drilling
郭新军 1张玉山 1赵维青 1刘剑 1游尧 2刘坤翔2
作者信息
- 1. 中海油能源发展股份有限公司工程技术分公司,海南 海口 570100||海南省深海深层能源工程重点实验室,海南 海口 570100
- 2. 中海石油(中国)有限公司深圳分公司,广东 深圳 518067||中海石油深海开发有限公司,广东 深圳 518067
- 折叠
摘要
Abstract
The surface conductor is a critical structure in deepwater drilling operations,supporting the subsea wellhead,lower casing strings,and subsea blowout preventers.Researching the factors influencing the load-bearing capacity of the surface conductor,as well as the relevant theories and field practices that impact the stability of the subsea wellhead,is of paramount importance.This paper investigates the influence patterns of various factors on the stability of the subsea wellhead and the load-bearing capacity of the conductor during operations.It establishes a theoretical model and calculation method for the axial load-bearing capacity of the surface conductor applicable to deepwater drilling.By considering changes in fluid density,a calculation method for the variation of axial loads on the subsea wellhead during surface cementing operations is proposed.The most critical operating conditions for axial forces on the wellhead are identified,and measures to enhance wellhead stability are suggested.The study concludes that the properties of shallow seabed soil,the load-bearing capacity of the surface conductor,jetting operation parameters,and changes in axial loads on the subsea wellhead caused by variations in fluids inside and outside the cementing process are the primary factors leading to instability or subsidence of the subsea wellhead.The research results can provide a reference for deepwater surface drilling and completion operations.关键词
深水钻井/井口下沉/井口轴向稳定性/喷射导管/表层套管固井Key words
Deepwater drilling/Wellhead subsidence/Axial stability of wellhead/Jet conductor/Surface casing cementing引用本文复制引用
郭新军,张玉山,赵维青,刘剑,游尧,刘坤翔..深水钻井表层作业井口稳定性影响因素分析[J].天然气与石油,2024,42(6):106-113,8.
