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99046 EFFECT OF MULTIPHASE SLUG FLOW ON THE STABILITY OF CORROSION PRODUCT LAYER

Product Number: 51300-99046-SG
ISBN: 99046 1999 CP
Author: MADAN GOPAL and SATHISH RAJAPPA
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Corrosion Experiments were carried out under iron carbonate scale-forming conditions in a large diameter, multiphase flow system. Both oil/water and oil/water/gas slug flows were studied at pressures up to 0.79 MPa and temperatures of 60°C and 80°C. It was found that with increasing iron concentration, the corrosion rates were reduced to negligible values in oil/water flows. However, significant corrosion was seen in slug flow with clear evidence of damage to the corrosion product layer due to impact and possible collapse of gas bubbles and a considerable reduction in the layer thickness. Details of corrosion rates and corrosion coupon surface analysis are presented. Keywords: Scaling conditions, corrosion product layer, multiphase slug flow, carbon dioxide, sweet corrosion
Corrosion Experiments were carried out under iron carbonate scale-forming conditions in a large diameter, multiphase flow system. Both oil/water and oil/water/gas slug flows were studied at pressures up to 0.79 MPa and temperatures of 60°C and 80°C. It was found that with increasing iron concentration, the corrosion rates were reduced to negligible values in oil/water flows. However, significant corrosion was seen in slug flow with clear evidence of damage to the corrosion product layer due to impact and possible collapse of gas bubbles and a considerable reduction in the layer thickness. Details of corrosion rates and corrosion coupon surface analysis are presented. Keywords: Scaling conditions, corrosion product layer, multiphase slug flow, carbon dioxide, sweet corrosion
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