Cause and countermeasures of corrosion and scaling of the gathering system in Baiju oil field

Based on the methods of water quality analysis, corrosion electrochemistry analysis, and X-ray diffraction, the types of the corrosion and scaling of the gathering system are studied. The results indicated that the corrosion and scaling was taken place simultaneously with the main scale of calcium and magnesium carbonate. Meanwhile, it was found that the corrosion was electrochemical erosion controlled by the cathode process. The system had high DO, Cl^- and SRB content, which was the main reason of causing corrosion. By researching the protect methods against corrosion and scaling, we proposed the chemical and physical methods as technical countermeasure based on the technical process and the research results, and achieved notable effect.