High temperature carbon dioxide corrosion inhibitor

摘要

The present application relates to a high temperature carbon dioxide corrosion inhibitor comprising the following components by mass percent: amide compound 15˜50%, organic alkynol 10˜25%, mercaptan acid 5˜15%, piperidine 5˜25%, mercaptopyridine 5˜15%, and solvent 25˜60%. The corrosion inhibitor has excellent corrosion inhibition for CO2 corrosion of oil field water system at a high temperature (150˜250° C.).

主权项

1. A high temperature carbon dioxide corrosion inhibitor, characterized in that the corrosion inhibitor comprises the following components by mass percent:amide compound15~50% organic alkynol10~25% mercaptan acid5~15%piperidine5~25%mercaptopyridine  5~15%, andsolvent25~60%;  wherein the amide compound includes ethylene bisoleamide, 9-heptadecenyl-N-di(aminoethyl)amide, or a combination thereof; wherein the organic alkynol includes propynol, 1,4-butynediol, or a combination thereof; wherein the mercaptan acid includes mercaptoformic acid, mercaptoacetic acid, or a combination thereof; wherein the mercaptopyridine includes 2-mercaptopyridine, 4-mercaptopyridine, or a combination thereof; and wherein the solvent includes water, an alcohol, or a combination thereof.