– In order to solve the corrosion problems in the South China Sea, the purpose of this paper was to study the main influences of corrosion including temperature, H2S content and corrosion inhibitor content in CO2/H2S oil field-produced water.
– The corrosion products formed on the steel surface were observed and analyzed using scanning electron microscope (SEM) and X-ray diffraction (XRD).
– The results indicate that temperature significantly influences the corrosion rate, which is a maximum at 70°C. The corrosion rate decreases as H2S content increases which is less than 10 mg/L, but then it increases rapidly. The FeCO3/FexSy protective film and a corrosion inhibition also were considered.
– A mixture containing an imidazoline derivate and an organic amine can enhance the corrosion resistance of the corrosion product film.
– A mixture containing an imidazoline derivate and an organic amine can enhance the corrosion product film corrosion resistance.
– Imidazoline is one kind of environmentally safe agent which can be used in the ocean.
– The corrosion can be controlled to a satisfactory extent in the presence of a mixture containing an imidazoline derivate and an organic amine.
