Application of HZ scale and corrosion inhibitor in Huabei Oilfield.

To solve the problem of scaling and corrosion of oil wells, HS-1 corrosion inhibitor was developed by synthesizing organic acid, organic amine and corresponding auxiliary materials. By combining this corrosion inhibitor with several kinds of anionic surfactant and zwitterionic surfactant, HZ scale and corrosion inhibitor was developed. The corrosion inhibiting rate and scale inhibiting rate of this material was measured by static metal hanging slice test and volumetric method. This inhibitor had been applied on 60 wells in Huabei Oilfield, the corrosion inhibiting rate was 70%, and scale inhibiting rate was 95%. The average inspecting period of wells with HZ scale and corrosion inhibitor was prolonged 3 times. This inhibitor has a brilliant popularization prospect.