西南石油大学学报（自然科学版）2016，Vol.38Issue(2)：176-182,7.DOI:10.11885/j.issn.1674-5086.2014.05.08.02
大斜度井中套管磨损机理研究
A Study on the Casing Wear Mechanism in Highly-deviated Well Drilling
摘要
Abstract
Aimed at studying the wear failure in the drilling process of highly-deviated well,this paper firstly carried out casing wear experiment research. According to the liner casing wear model based on the energy loss suggested by Dawson R and White J,and the experiment,the joint-casing wear coefficient is obtained. The finite element model of casing wear mechanism research is constructed using ABAQUS software. This paper uses the re-development user subroutine and Arbitrary Lagrange-Euler mesh. In the process of numerical simulation,the location of the wear node can be adjusted timely,the mesh element is smoothed,and the contact relations between joint and casing is altered continuously,which all contribute to the study on casing wear mechanism. Based on the shape of worn casing,the numerical simulation research is carried out to determine the remaining collapse strength,as a result of which,the relationship between the maximum wear depth and wear time is obtained. On this basis,the exact relationship between the maximum wear depth and wear time is determined to predict the maximum wear depth and remaining strength of casing after a period of accumulating wear time,which also provides theoretical basis for the safety assessment of worn casing.关键词
实验研究/套管磨损/有限元/剩余强度/抗外挤强度Key words
experiment study/casing wear/finite element/remaining strength/collapse strength分类
能源科技引用本文复制引用
练章华,于浩,刘永辉,林铁军,张强..大斜度井中套管磨损机理研究[J].西南石油大学学报（自然科学版）,2016,38(2):176-182,7.基金项目
国家“十二五”科技重大专项（2011ZX05050）；教育部博士点基金（20135121110005）。 （）
