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99003 Development of a Corrosion Inhibition Model II.Verification of Model by Continuous Corrosion Rate Measurements Under flowing Conditions with a Novel Downhole Tool

Product Number: 51300-99003-SG
ISBN: 99003 1999 CP
Author: T. G. Martin, M. T. COX, R H. Hausler, R, J. Dartez, P. Pratt, J. C. Roberts
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A novel downhole corrosion monitoring system was used to monitor corrosion rates, and verify corrosion inhibitor effectiveness in the production tubing of a CO2 flood in the Oklahoma panhandle. The monitoring system was placed in the fmt tubing joint immediately above the electrical submersible pump. This location was deemed most corrosive, and therefore requiring the highest inhibitor concentration, due to high CO2 partial pressure, the elevated temperature, and the extremely turbulent flow. Laboratory evaluations had indicated the approximate effective inhibitor concentration required to attain the desired target corrosion rate under similar environmental and turbulence conditions. The complex problem of translating laboratory flow (high speed autoclave test) to field conditions was attempted empirically using established correlation for the rotating cylinder and tubular flow. Keywords: target corrosion rate, effective inhibitor concentration, shear stress, high speed autoclave test, CO2 partial pressure, corrosion inhibition modeling, response surface methodology
A novel downhole corrosion monitoring system was used to monitor corrosion rates, and verify corrosion inhibitor effectiveness in the production tubing of a CO2 flood in the Oklahoma panhandle. The monitoring system was placed in the fmt tubing joint immediately above the electrical submersible pump. This location was deemed most corrosive, and therefore requiring the highest inhibitor concentration, due to high CO2 partial pressure, the elevated temperature, and the extremely turbulent flow. Laboratory evaluations had indicated the approximate effective inhibitor concentration required to attain the desired target corrosion rate under similar environmental and turbulence conditions. The complex problem of translating laboratory flow (high speed autoclave test) to field conditions was attempted empirically using established correlation for the rotating cylinder and tubular flow. Keywords: target corrosion rate, effective inhibitor concentration, shear stress, high speed autoclave test, CO2 partial pressure, corrosion inhibition modeling, response surface methodology
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