Abstract
In this experiment the main corrosion factors of produced water in Changqing Oil Field concentrated treatment station was studied. In terms of ion component analysis, dissolved oxygen detection, bacteria content measurement, corrosion rate determination, as well as Gray Relational Analysis (GRA) method. And the corrosion products Scanning Electron Microscope Energy Dispersive X-ray analysis(SEM/EDX) were conducted. The results showed that the TGB content, pH value, S2-content, HCO3-, and dissolved oxygen content were the main corrosion factors. This study indicated that the corrosion rate of the system could be reduced from 0.0872mm/a to 0.0074mm by increasing pH value of oilfield produced water appropriately, strengthening the intensity of sulfur removal, controlling the bacterial content by adding fungicides etc.
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