Abstract
The synthetic imidazoline-ammonium-salt corrosion inhibitor was compounded with sodium sulfite, isopropanol and potassium pyroantimonate respectively. Potassium pyroantimonate was selected as the best compound with good synergy. And the ratio of potassium pyroantimonate and the corrosion inhibitor was 3:50. Compared to the imidazoline corrosion inhibitor separately used, the inhibition efficiency was improved about 1.2% when the amount of the potassium pyroantimonate was 0.03%. Through researching the synergistic effect with polyaspartic acid, the green and high-efficient corrosion and scale inhibitor is got which is applicable to oilfield.
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