Downhole Corrosion Monitoring Technology of Gas Well

The nature gas flow out of gas wells often contains water, CO2 and H2S, which could contribute to the corrosion and lead to the failure of gas wells. The common techniques for monitoring the downhole corrosion of gas wells are summarized. The monitoring principle, advantages and disadvantages, present status of field use and application situations are introduced. The selection of monitoring means and the application of corrosion data are suggested.