首页 | 本学科首页   官方微博 | 高级检索  
     

三种套管接头抗压缩性能研究
引用本文:林凯,吕国志,白登相,王建军. 三种套管接头抗压缩性能研究[J]. 天然气工业, 2006, 26(4): 68-69
作者姓名:林凯  吕国志  白登相  王建军
作者单位:1.西北工业大学;2.中国石油天然气集团公司管材研究所;3.塔里木油田分公司
基金项目:中国石油天然气集团公司资助项目
摘    要:针对套管接头抗压缩强度问题,使用全尺寸实物试验的方法对几种不同钢级、不同螺纹形式的套管接头的抗压缩强度进行了对比试验,并借助材料力学和有限元方法对试验结果进行了分析。实物试验中出现了管体失稳和接箍跳扣两种套管接头压缩失效形式。试验结果和分析结果表明,N80、P110钢级材料的压缩屈服强度高于拉伸屈服强度;偏梯形螺纹套管接头的压缩屈服强度比同钢级、同壁厚特殊扣螺纹套管接头低6.7%~7.7%;上扣是否到位,直接影响套管接头部分的抗压缩能力,上扣不到位的特殊螺纹套管接头的抗压缩性能甚至低于偏梯形螺纹接头。同时指出,为了保证上扣质量,不应使用浮动上扣方法,管柱设计中应进行抗压缩强度设计。

关 键 词:套管  压缩  拉伸  接头  屈服  上扣  扭矩
收稿时间:2005-11-19
修稿时间:2005-11-19

STUDY ON COMPRESSIBILITY OF 3 KINDS OF CASING JOINTS
Lin Kai,Lu Guozhi,Bai Dengxiang,Wang Jianjun. STUDY ON COMPRESSIBILITY OF 3 KINDS OF CASING JOINTS[J]. Natural Gas Industry, 2006, 26(4): 68-69
Authors:Lin Kai  Lu Guozhi  Bai Dengxiang  Wang Jianjun
Affiliation:1.Northwest Polytechnic University; 2.CNPC Tubular Material Institute; 3.PetroChina Tarim Oil Field Company
Abstract:Aiming at the compressibility of casing joints, using full-size real objects of casing joints with different steel grades and thread profiles, their compressibility is compared by testing. Based on the material mechanics and the finite element method, the testing results are analyzed. Two modalities of casing joint failures i.e. pipe body buckling and joint jumping happen in the testing. The testing and analyzing results show the compression yield strength of the steel grades of N80 and P110 are greater than the tension yield strength. The compression yield strength of the casing joint with eccentric trapezoidal thread is 6.7%~7.7% lower than that of the casing joint with special thread under the conditions of same steel grade and wall thickness. The make-up quality of casing joints will directly influence the compressibility. The compressibility of the casing joints with special thread and poor make-up quality is even lower than that of the casing joints with eccentric trapezoidal thread. To guarantee the make-up quality, the float making-up method should not be used. The casing-string design should consider the compression strength of joints.
Keywords:casing   compression   tension   joint   yield   make up   torque
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《天然气工业》浏览原始摘要信息
点击此处可从《天然气工业》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号