以H₂S分压、CO₂分压、温度和流速为变量，采用高温高压反应釜模拟了L360天然气管道的腐蚀过程。进行了9组正交试验，采用SEM、EDS、XRD表征腐蚀产物。结果表明：当CO₂/H₂S分压比为33~300时，腐蚀产物主要为FeS，反应由H₂S主导且以均匀腐蚀为主，各影响因素排序为H₂S分压>温度>流速>CO₂分压。建立了H₂S/CO₂分压比为33~300的腐蚀预测模型，考虑上述4个因素的影响，并采用MATLAB多元线性回归求得各参数值，验证可知建立的腐蚀预测模型精确度较好。

Using H₂S partial pressure, CO₂ partial pressure, temperature and flow rate as variables, a high temperature and high pressure reactor was used to simulate the corrosion process of L360 natural gas pipeline. Nine orthogonal experiments were performed, and corrosion products were characterized by SEM, EDS, and XRD. The results show that when CO₂/H₂S partial pressure ratio was 33~300, the main corrosion products were FeS, the reactions were dominated by H₂S and most of them were uniform corrosion. The order of the influencing factors was as follows:H₂S partial pressure > temperature > flow rate > CO₂ partial pressure. A corrosion prediction model with a H₂S/CO₂ partial pressure ratio of 33~300 was established. Considering the effects of the above four factors, MATLAB multivariate linear regression was used to obtain the values of various parameters. It was verified that the accuracy of the corrosion prediction model was good.