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11245 Flow-Induced Corrosion and Erosion-Corrosion Assessment of Carbon Steel Pipework in Oil and Gas Production

Picture for 11245 Flow-Induced Corrosion and Erosion-Corrosion Assessment of Carbon Steel Pipework
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Product Number: 51300-11245-SG
ISBN: 2011 11245 CP
Author: Richard Barker, Xinming Hu and Anne Neville
Publication Date: 2011
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A flow-induced corrosion and erosion-corrosion investigation was conducted to determine the degradation rates and mechanisms that had been experienced in service in the pipework of an offshore facility. The investigation reviewed the flow-induced corrosion and erosion-corrosion performance of the carbon steel parent metal of the pipework in comparison to the heat affected zone (HAZ) and the nickel-molybdenum weld material. The programme of experiments assessed the potential of two corrosion inhibitors to adequately control the material degradation caused by static corrosion, flowinduced corrosion and erosion-corrosion on the three regions. Static corrosion tests were performed using linear polarisation in CO2 saturated conditions. Flow-induced corrosion and erosion-corrosion experiments were conducted utilising a submerged impinging jet (SIJ) in CO2 saturated conditions at a fluid velocity of 7m/s with sand loadings of 0mg/L and 100mg/L. The effects of flow-induced corrosion and erosion-corrosion were studied using gravimetric techniques. Mechanisms were discussed based upon results obtained from micro-structural studies.

Key words: erosion, corrosion, flow-induced, erosion-corrosion, nickel-molybdenum weld, submerged impinging jet, carbon dioxide, velocity, sand, inhibitor.
A flow-induced corrosion and erosion-corrosion investigation was conducted to determine the degradation rates and mechanisms that had been experienced in service in the pipework of an offshore facility. The investigation reviewed the flow-induced corrosion and erosion-corrosion performance of the carbon steel parent metal of the pipework in comparison to the heat affected zone (HAZ) and the nickel-molybdenum weld material. The programme of experiments assessed the potential of two corrosion inhibitors to adequately control the material degradation caused by static corrosion, flowinduced corrosion and erosion-corrosion on the three regions. Static corrosion tests were performed using linear polarisation in CO2 saturated conditions. Flow-induced corrosion and erosion-corrosion experiments were conducted utilising a submerged impinging jet (SIJ) in CO2 saturated conditions at a fluid velocity of 7m/s with sand loadings of 0mg/L and 100mg/L. The effects of flow-induced corrosion and erosion-corrosion were studied using gravimetric techniques. Mechanisms were discussed based upon results obtained from micro-structural studies.

Key words: erosion, corrosion, flow-induced, erosion-corrosion, nickel-molybdenum weld, submerged impinging jet, carbon dioxide, velocity, sand, inhibitor.
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