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00070 CORROSION INHIBITION OF WET GAS PIPELINES UNDER HIGH GAS AND LIQUID VELOCITIES

Product Number: 51300-00070-SG
ISBN: 00070 2000 CP
Author: Michael Swidzinski, W. Paul Jepson, Bob Fu and Audrey Taggart
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Work was conducted to assess the applicability of carbon steel pipeline and corrosion inhibitor as a viable combination for transporting wet multiphase corrosive petroleum fluids under high gas and liquid velocities. Flow loop tests were performed to study the performance of inhibitors under simulated field conditions with gas and liquid velocity as high as 25 rn/s. The results showed that inhibition efficiency greater than 96% can be achieved with 100 to 200 ppm of corrosion inhibitors specially formulated for high shear applications. The performance of inhibitors with respect to concentration showed a typical profile similar to that observed at lower velocity. The effective concentration was dependent upon the flow regime. Slug flow typically required a higher concentration due to its severe flowing condition. The positive results support the combined use of carbon steel and corrosion inhibition as a viable and cost-effective option for the development of a pipeline system for the transportation of wet corrosive multiphase hydrocarbon fluids at high velocity. Keywords: wet gas, CO2 corrosion, high velocity, corrosion inhibition, and inhibitors
Work was conducted to assess the applicability of carbon steel pipeline and corrosion inhibitor as a viable combination for transporting wet multiphase corrosive petroleum fluids under high gas and liquid velocities. Flow loop tests were performed to study the performance of inhibitors under simulated field conditions with gas and liquid velocity as high as 25 rn/s. The results showed that inhibition efficiency greater than 96% can be achieved with 100 to 200 ppm of corrosion inhibitors specially formulated for high shear applications. The performance of inhibitors with respect to concentration showed a typical profile similar to that observed at lower velocity. The effective concentration was dependent upon the flow regime. Slug flow typically required a higher concentration due to its severe flowing condition. The positive results support the combined use of carbon steel and corrosion inhibition as a viable and cost-effective option for the development of a pipeline system for the transportation of wet corrosive multiphase hydrocarbon fluids at high velocity. Keywords: wet gas, CO2 corrosion, high velocity, corrosion inhibition, and inhibitors
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