Abstract: After gathering corrosion materials from fieldwater reinjection well and gas production well with water in Northeastern Sichuan Gas District, corrosion evaluation experiment was done under static condition and dynamic condition. The experiment results show that the corrosion of the two wells were serious, corrosion rate was over 0.1 mm/a, and obvious local corrosion was found. A corrosion inhibitor screening evaluation to the two wells was done under the same experiment conditions as above. It was found that the corrosion inhibitor CT2-15 can effectively control corrosion rate less than 0.1 mm/a, improve surface condition of corrosion coupon, and inhibit local corrosion. Physiochemical performance evaluation result shows that CT2-15 has good heat resistance and compatibility with produced water. It will not form emulsification with fieldwater and is fit to be used in field.