Sulfosalicylic Acid Spectrophotometric Method of Selected for Measuring Ferrous Ion Concentration of Gas Well Produced Water
To specify CO2 corrosion status and evaluate corrosion inhibitor in gas wells,sulfosalicylic acid spectrophotometric method is selected for measuring Ferrous ion concentration of gas well produced water.Corrosion analysis is done via long-term ferrous ion concentration monitoring and ferrous ion concentration comparation of discrete wells in identical fracture system.Multiple factors influencing measuring result is analyzed:solution pH value,developing time and solution placement time.Relatively accurate monitoring result would be achieved under solution pH value at 2-4 and developing time at 20 minutes.Monitoring ferrous ion concentration before and after corrosion inhibitor injection shows significant protective effect.Ferrous ion concentration monitoring results matches coupon corrosion test.
sulfosalicylic acidgas well produced waterferrous ion concentrationcoupon corrosion test
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维普
