海洋环境水下采油树腐蚀与防护研究进展

根据国内外水下采油树腐蚀防护技术现状,从采油树腐蚀环境、材料选择、阴极保护及涂层防护方面系统地探究了水下采油树的腐蚀防护技术,对各种技术的优缺点进行了比较分析.材料选择方面,主要对采油树的服役环境、服役要求及材料性能等进行了探究,并对常见水下采油树的材料316L、25Cr7Ni4Mo型双相不锈钢、30CrMo钢及Inconel 625等进行了分析总结.阴极保护方面,主要探究了牺牲阳极在采油树腐蚀与防护方面的应用.涂层防护方面,主要对国内外水下采油树重防腐涂层现状、标准及种类进行了综述分析.腐蚀失效方面,对其失效原因及失效分析原则和程序进行了探究.最后,就采油树的腐蚀防护材料选择、阴极保护、涂层防护及腐蚀失效方面的发展进行了展望.

Research Progress on Corrosion and Protection of Christmas Tree in Marine Environment

According to the current situation of Christmas tree corrosion protection technology at domestic and overseas, the corrosion protection technology for underwater Chistmas trees is systematically explored from aspects including the corrosion environment, material selection, cathodic protection and coating protection, and the advantages and disadvantages of various technologies are compared and analyzed. In terms of material selection, the service environment, service requirements and material properties of the tree are mainly explored, and the common subsea tree materials, such as 316L, 25Cr7Ni4Mo duplex stainless steel, 30CrMo steel and Inconel 625, are analyzed and summarized. In the terms of cathodic protection, the application of sacrificial anode in Christmas tree corrosion and protection was investigated. In the aspect of coating protection, the research progress, standards and types of heavy-duty anti-corrosion coatings for underwater Christmas trees are reviewed and analyzed. In terms of corrosion faluire, the failure causes and failure analysis principles and procedures are investigated. Finally, the development of tree corrosion protection materials selection, cathodic protection, coating protection and corrosion failure were prospected.