Abstract: Shale gas is a clean energy, which occupies an important position in the energy strategies of many countries. The shale gas exploitation technologies in the United States, Canada and other countries are relatively mature and they are in the leading position across the world. While other countries like in China shale gas exploitation research started later but has developed rapidly in recent years. With the continuous exploitation of shale gas, the corrosion of downhole strings, surface pipelines and equipment occurs frequently, which has seriously affected the normal production of shale gas. Corrosion may occur in shale gas exploration, development, storage and transportation, and different types of corrosion often influence each other, which makes it more difficult to prevent and control. The main corrosion problems involved in shale gas production are sulfate reducing bacteria corrosion, scouring corrosion, CO₂ corrosion, H₂S corrosion and under-scale corrosion. In this paper, the corrosion reasons, corrosion mechanism and anti-corrosion methods in shale gas production are analyzed based on the current research development.

Key words: shale gas, sulfate reducing bacteria corrosion, CO₂ corrosion, H₂S corrosion, under deposit corrosion, erosion-corrosion