The current stage of development of promising gas and gas-condensate fields on the territory of Russia is realized at the extracting plants whose products contain carbon dioxide (CO₂). The presence of carbon dioxide, in combination with moisture and other factors, stimulates the intense development of corrosion processes and requires careful and well-justified analysis of the corrosion activity of working media with subsequent choice of the engineering solutions ensuring the reliable safe operation of hydrocarbon-extracting plants. We analyze the accumulated experience of testing of carbon steels and corrosion-resistant alloys in the presence of aggressive CO₂, which leads to the development of dangerous local corrosion defects. These defects are developed especially rapidly under the conditions of condensation of moisture, which is most intensely accumulated in the process of the gas extraction in the first sections of the pipeline for the highest temperature drops. The tests carried out at the Gazprom VNIIGAZ, LLC demonstrated that local defects may develop on carbon and low-alloy steels (such as 09G2S steel) under the operating conditions of extracting plants in the presence of CO₂ and moisture condensation. Especially high corrosion resistance was exhibited only by the alloy whose chromium content is ≥ 13%.

俄罗斯领土上有发展前景的天然气和凝析气田的发展阶段是在其产品中含有二氧化碳（CO ₂）的提取厂实现的。二氧化碳的存在，再加上水分和其他因素，会刺激腐蚀过程的剧烈发展，需要对工作介质的腐蚀活性进行仔细而合理的分析，然后再选择工程解决方案，以确保烃类的可靠安全运行提取植物。我们分析了在侵蚀性CO ₂存在下测试碳钢和耐腐蚀合金的累积经验，从而导致危险的局部腐蚀缺陷的发展。这些缺陷在水分凝结的条件下特别迅速地发展，水分凝结在最高温度下降的管道的第一部分的抽气过程中最强烈地积聚。在Gazprom VNIIGAZ，LLC上进行的测试表明，在存在CO ₂和湿气冷凝的情况下，在萃取设备的操作条件下，碳钢和低合金钢（例如09G2S钢）可能会出现局部缺陷。仅铬含量≥13％的合金才能表现出极高的耐腐蚀性。