油气开采与管道输送过程中，介质中通常含有CO2与H2S，它们是造成油气

In the process of oil and gas exploitation and pipeline transportation, the medium usually contains CO2 and H2S, which are the root cause of corrosion and even premature failure of pipes used in oil and gas fields, and thus have a certain impact on the normal production and operation of the petroleum industry. This paper introduces the research problems and protection of CO2 and H2S corrosion in materials, focusing on the corrosion process of CO2 and H2S alone and the coexistence of the two. There is a high corrosion rate of petroleum pipes, and it is easy to increase the sensitivity of sulfide stress cracking and metal hydrogen-induced cracking. The solubility and pH of compounds containing CO2 are the main factors affecting CO2 corrosion. The corrosion protection technology under the coexistence of CO2 and H2S, including the selection of materials, the selection of corrosion inhibitors, the application of electrochemical protection technology, and the use of the inner coating technology of the materials, are described, with a view to the coexistence of CO2 and H2S in oil and gas fields. Protection provides a reference. <br>"Oil and Gas Field Corrosion and Protection Technical Manual" Editorial Committee <br>Oil and Gas Field Corrosion and Protection Technical Manual <br>Petroleum Industry Press

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. In this paper, the research and protection of CO2 and H2S corrosion in the material are introduced, focusing on the separate existence of CO2 and H2S, and the coexistence of the two corrosion process found that the corrosion rate of the oil pipe in the coexistence of the oil pipe is larger than the corrosion rate of the oil pipe, and it is easy to increase the sensitivity of sulphide stress cracking and metal hydrocracking, the solubility degree and pH value of CO2 compounds are the main factors affecting CO2 co.bs. The corrosion protection technology under CO2 and H2S co-existence, 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, is expounded in order to provide reference for pipe protection under CO2 and H2S coexistence in oil and gas fields.<br>Editorial Board of the Technical Manual on Corrosion and Protection of Oil and Gas Fields<br>Technical Manual on Corrosion and Protection in Oil and Gas Fields<br>Oil Industry Press

In the process of oil and gas exploitation and pipeline transportation, the medium usually contains CO2 and H2S, which are the root cause of corrosion and even premature failure of pipe materials for oil and gas fields, and then have a certain impact on the normal production and operation of the oil industry. In this paper, the research problems and protection of CO2 and H2S corrosion in materials are introduced. The corrosion process of CO2 and H2S alone and in the presence of both are discussed. The results show that the corrosion rate of petroleum pipe under the coexistence of CO2 and H2S is higher than that of CO2 and H2S alone, and it is easy to increase the sensitivity of sulfide stress cracking and metal hydrogen induced cracking The solubility and pH value of O2 compounds are the main factors affecting CO2 corrosion. The corrosion protection technology including material selection, corrosion inhibitor selection, application of electrochemical protection technology and application of internal coating technology of materials under the coexistence of CO2 and H2S are described, so as to provide reference for pipeline protection under the coexistence of CO2 and H2S in oil and gas fields.<br>Editorial board of technical manual on corrosion and protection of oil and gas fields<br>Oil and gas field corrosion and protection technical manual<br>Petroleum Industry Press