Material Selection and Corrosion Rate Analyzed for CO2 Injection Well
This paper describes the material selection methodology and corrosion studies performed in a CO2 sequestration project to optimize well costs and improve overall project economics without jeopardizing the CO2-injector-well integrity.
Typical materials used for CO2 injector wells are either corrosion-resistant alloys (CRA) or epoxy-lined tubulars. The most widely adopted CRA material is 25Cr, which features a high well-application cost. Application of materials other than 25Cr for CO2 injector wells are uncommon but may be fit for purpose. The complete paper describes material-selection methodology and corrosion studies performed in the K1 field CO2 sequestration project using materials other than 25Cr in an effort to optimize well costs and improve overall project economics without jeopardizing CO2 injector-well integrity.
K1 field is in the Sarawak Basin at a water depth of 453 ft.