In the process of oil and gas exploration and pipeline transmission, the medium usually contains CO2 and H2S, which are the root causes of corrosion or even premature failure of pipes in oil and gas fields, which has a certain impact on the normal production and operation of the petroleum industry. This paper introduces the research and protection of CO2 and H2S corrosion in materials, and focuses on the separate existence of CO2 and H2S, and the corrosion process under the coexistence of the two, and the study of the corrosion rate of the oil pipe in the coexistence of the two is greater than the corrosion rate of the petroleum pipe, and it is easy to increase the sensitivity of sulphide stress cracking and metal hydrogen cracking. The corrosion protection technology under CO2 and H2S co-existing, including the selection of materials, the selection of corrosion inhibitors, the application of electrochemical protection technology and the use of internal coating technology of materials, with a view to providing reference for pipe protection under coexistence of CO2 and H2S in oil and gas fields, with a view to providing reference for pipe protection under coexistence of CO2 and H2S in oil and gas fields.
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