石油钻采工艺2025，Vol.47Issue(6)：674-683,10.DOI:10.13639/j.odpt.202509043
深水喷射钻井等候时间对表层导管稳定性影响分析及设计方法
Analytic approach for the influence of waiting time on deepwater conductor stability
摘要
Abstract
In deepwater jet drilling,the design of waiting time after surface conductors installation is crucial for safe and efficient well construction.Addressing the problems that current design methods are mostly developed by regional experience without comprehensive consideration of the vertical and lateral stability of conductors,it is necessary to develop a waiting time design approach with wider applicability and higher accuracy.Based on the pipe-soil interaction theory,this study analyzes the variation patterns of the vertical and lateral bearing capacities of surface conductors with waiting time from completion of jetting placement to the release of running tools.Through laboratory simulation experiments,the variation rules of soil recovery coefficient of cohesive soil and sandy soil with waiting time are studied.On this basis,an optimal waiting time design method comprehensively considering vertical and lateral stability is proposed.Laboratory experimental results show that under the same conditions,the recovery coefficient of cohesive soil is higher than that of sandy soil.Field application indicates that by using this method,the minimum waiting time required for the first spud-in phase of the target well to meet the requirements of vertical and lateral stability is 2.9 hours,which saves 10.6 hours compared to the traditional operation method of determining waiting time based on experience in adjacent wells.By quantifying the influence of soil properties and coupling vertical and lateral stability,this method establishes a more comprehensive theoretical design model and provides a scientific basis for the safe and efficient installation of conductors in deepwater drilling.关键词
深水钻井/表层导管/喷射安装/等候时间/土体恢复力系数/井口稳定性Key words
deepwater drilling/surface conductor/jetting installation/waiting time/soil recovery coefficient/wellhead stability分类
能源科技引用本文复制引用
LI Lei,ZHAO Ying,ZHOU Bo,CUI Tiancong,DONG Mengke,ZHU Chiheng..深水喷射钻井等候时间对表层导管稳定性影响分析及设计方法[J].石油钻采工艺,2025,47(6):674-683,10.基金项目
国家自然科学基金"深水钻井表层导管承载力主控因素及演化机制研究"(编号:52404013). （编号:52404013）
