Downhole materials optimization for harsh petroleum production

This paper presents the outcome of a comprehensive program of work to establish the suitability and performance of candidate inhibitor packages for downhole production applications. It covers both CO₂ and H₂S corrosion performance of carbon and low alloy steel tubulars in simulated field conditions. Inhibitor performance was established through using a number of inhibitor selection methods by systematic determination of efficiency, persistency and chemical compatibility of both conosion and combined corrosion/scale inhibitor packages. The results have led to determination of effective means of corrosion mitigation to enable wider uses of carbon and low alloy steels for downhole applications.