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51314-4264-Determining Dose Optimal Dose Rate of Oilfield Corrosion Inhibitors by Sequential Addition

Picture for Determining Dose Optimal Dose Rate of Oilfield Corrosion Inhibitors by Sequential Addition
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Product Number: 51314-4264-SG
ISBN: 4264 2014 CP
Author: Melanie Reid
Publication Date: 2014
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Oilfield corrosion inhibitors undergoing performance testing for in field applications are often assessed by means of sequential dosing until a suitable dose rate to mitigate corrosion to acceptable levels is achieved. Weldment corrosion tests on a 1% Nickel weld specimen were performed to assess if this is the best practice for determining dose rates. Coupled Linear Polarisation Resistance measurements galvanic current measurements and microscopic analysis was performed on specimens that had been exposed to sequential dosing under dosing and dosing at the required rate. Linear Polarisation Resistance measurements showed that sequential dosing is useful in determining the dose rate of corrosion inhibitor required to reduce general corrosion rates to an acceptable level however severe localised corrosion occurred in the first phase of testing when the system is in an ‘under dosed’ state which was not seen when dosed at higher rates microscopic analysis showed sequential dosing to be an ineffective method.
Oilfield corrosion inhibitors undergoing performance testing for in field applications are often assessed by means of sequential dosing until a suitable dose rate to mitigate corrosion to acceptable levels is achieved. Weldment corrosion tests on a 1% Nickel weld specimen were performed to assess if this is the best practice for determining dose rates. Coupled Linear Polarisation Resistance measurements galvanic current measurements and microscopic analysis was performed on specimens that had been exposed to sequential dosing under dosing and dosing at the required rate. Linear Polarisation Resistance measurements showed that sequential dosing is useful in determining the dose rate of corrosion inhibitor required to reduce general corrosion rates to an acceptable level however severe localised corrosion occurred in the first phase of testing when the system is in an ‘under dosed’ state which was not seen when dosed at higher rates microscopic analysis showed sequential dosing to be an ineffective method.
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