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98053 Modeling Corrosion Rates in Non-Annular Gas Condensate Wells Containing CO2

Product Number: 51300-98053-SG
ISBN: 98053 1998 CP
Author: James D. Garber, Venugopal Polaki, Cedric Adams, Narayana Rae Varanasi
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New gas condensate wells are typically producing in annular flow. As the water production increases, the flow dynamics of these wells change to a non-annular flow regime. The flow regime could become chum or slug. A mathematical model has been developed to physically describe this condition. Corrosion rates have been measured in the laboratory and the corrosion rate in slug flow was consistently higher than in churn flow regardless of the experimental conditions selected. A number of non-annular flow wells from the field have been physically described using the new non-annular flow model. There appears to be a correlation between the Taylor bubble length and the corrosion rate. A corrosion rate model has been developed which uses 4 parameters from the non-annular flow model. Keywords: CO2 Corrosion, Non-Annular Flow, Corrosion Rates
New gas condensate wells are typically producing in annular flow. As the water production increases, the flow dynamics of these wells change to a non-annular flow regime. The flow regime could become chum or slug. A mathematical model has been developed to physically describe this condition. Corrosion rates have been measured in the laboratory and the corrosion rate in slug flow was consistently higher than in churn flow regardless of the experimental conditions selected. A number of non-annular flow wells from the field have been physically described using the new non-annular flow model. There appears to be a correlation between the Taylor bubble length and the corrosion rate. A corrosion rate model has been developed which uses 4 parameters from the non-annular flow model. Keywords: CO2 Corrosion, Non-Annular Flow, Corrosion Rates
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