焊管2011，Vol.34Issue(4)：26-28,40,4.
连续油管在川东气田的腐蚀行为研究
Study on Corrosion Behavior of Coiled Tubing in East Sichuan Gas Field
摘要
Abstract
According to the CT80 coiled tubing corrosion situation occurred in down-hole operation at East Sichuan Gas Field,the corrosion product on pipe surface, microstructure, hardness and corrosive media were analyzed by using XRD, laser microscope and ion chromatography, and the corrosion failure of coiled tubing in the weak alkaline solution contained Gl - and SO42 - under high pressure and temperature was studied. The results showed that Cl - and S2 - play a major role on the coiled tubing corrosion in the solution of East Sichuan Gas Field;the higher the hardness of coiled tubing, the higher the corrosion sensitivity. The extruded surface and compression surface are the most serious areas of corrosion which are caused by the repeated plastic deformation in operation process of coiled tubing.关键词
连续油管/腐蚀/失效Key words
coiled tubing/ corrosion/ failure分类
能源科技引用本文复制引用
毕宗岳,张鹏,井晓天,黄晓辉..连续油管在川东气田的腐蚀行为研究[J].焊管,2011,34(4):26-28,40,4.基金项目
国家"863"项目(2006AA06A106) （2006AA06A106）
