3Cr抗CO2和H2S腐蚀系列油套管开发

CO2、H2S腐蚀是石油天然气开采过程中的主要腐蚀问题。文章在分析油井管CO2腐蚀行为和腐蚀特点的基础上，介绍了抗CO2、H2S腐蚀油套管的研制过程并开发出腐蚀性能良好的3Cr系列经济型油套管。文章重点介绍了80、95、110等不同钢级成品管的力学性能，抗CO2、H2S应力腐蚀开裂性能。运用SEM扫描电境、X光电子能谱仪、X射线衍射、体视显微镜等分析了钢经腐蚀后的表面腐蚀产物的组成、结构，并对Cr元素改善钢的抗CO2腐蚀行为及机理进行了分析。

Development of 3 Cr Series Oil Pipes with Good CO2 and H2S Corrosion Resistant Properties

Carbon dioxide and hydrogen sulphide corrosion is the main corrosion occurring in mining petroleum and gas.Carbon dioxide's corrosive characteristics and behavior of oil casings are analyzed.Development of the oil casing that is carbon dioxide corrosion resistant and hydrogen sulphide corrosion resistant,and a kind of low-alloyed steel with three percent of chromium and good corrosion resistant performance is introduced in this paper.The mechanical properties,carbon dioxide corrosion resistance as well as hydrogen sulphide stress corrosion cracking properties of 80,95,110ksi grades are focused on.The make up and structure of the surface corrosion products,corrosion resistant behavior and mechanism of chromium in the low alloyed steels are also studied by means of advanced SEM,XPS,XRD,stereo light microscope,etc.