工程研究-跨学科视野中的工程2017，Vol.9Issue(5)：460-464,5.DOI:10.3724/SP.J.1224.2017.00460
套管下入过程中最大井眼曲率计算方法研究
The Study of Maximum Hole Curvature based on Casing Tripability
摘要
Abstract
The axial force of the bending section is the key point to select the curvature of the wellbore for the stress analysis of the bending section casing and the design of directional well track. Its size is subject to a va-riety of conditions. The derivation of the maximum borehole curvature traditional formula is based on the API. The scope and deficiencies of its application are clarified. It makes a comment on the optimization of the calcula-tion model of other scholars. In order to improve the applicability and accuracy, the calculation model is derived based on the effective stress of the bending segment casing and effective stress. All kinds of working conditions are analyzed in the process of casing running. The analysis results show that the top casing is the most dangerous condition. Under this condition, the maximum wellbore curvature is a certain curved section to ensure the maxi-mum wellbore curvature under the safety of the casing. A new model of maximum borehole curvature applicable to any tension condition is obtained.关键词
井眼曲率/套管下入/弯曲应力/有效应力/上提下冲Key words
hole curvature/casing running/bending stress/effective seress/putting up and down分类
能源科技引用本文复制引用
郑鑫,周杨飞,邓赛赫,谢艺华..套管下入过程中最大井眼曲率计算方法研究[J].工程研究-跨学科视野中的工程,2017,9(5):460-464,5.基金项目
埋地管道泄漏定位检验技术研究(编号2015kj22)资助. （编号2015kj22）
