石油勘探与开发2012，Vol.39Issue(2)：238-242,5.
CO2和H2S共存环境下井筒腐蚀主控因素及防腐对策——以塔里木盆地塔中Ⅰ气田为例
Major corrosion factors in the CO2 and H2S coexistent environment and the anticorrosion method: Taking Tazhong I gas field, Tarim Basin, as an example
摘要
Abstract
Anti-corrosion techniques are studied to deal with the CO2 and H2S coexistent environment of the Tazhong I gas field. Orthogonal experiment with five different factors and levels is carried out to compare the influence of the factors on the corrosion rate of the sulfur resistance tubing. These five factors are pressure of CO2, pressure of H2S, temperature, content of Cl~, and water cut. It is found that CO2 pressure is the major corrosion factor. The combination of sulfur resistance tubing and corrosion inhibitor is selected as the anti-corrosion method and the proper corrosion inhibitor named YU-4 is designed according to the result of orthogonal experiment. This anti-corrosion method was used in 12 wells of the Tazhong I gas field, achieving good results. The average corrosion rate of Well TZ83 decreased from 1.23 mm/a to 0.025 mm/a and the corrosion rate of Well TZ623 decreased from 0.370 mm/a to 0.016 mm/a.关键词
气井/CO2/H2S/腐蚀/影响因素/主控因素/防腐对策Key words
gas well/ CO2/ H2S/ corrosion/ influencing factor/ major factor/ anti-corrosion method分类
能源科技引用本文复制引用
裘智超,熊春明,常泽亮,赵志宏,赵春,叶正荣..CO2和H2S共存环境下井筒腐蚀主控因素及防腐对策——以塔里木盆地塔中Ⅰ气田为例[J].石油勘探与开发,2012,39(2):238-242,5.基金项目
中国石油天然气股份有限公司重大科技专项“海相碳酸盐岩大油气田勘探开发关键技术”(2008E-0709) （2008E-0709）
