Surface degradation in oil well tubings due to sliding contact against sucker rod couplings leads to component damage, decrease productivity by leakage and ultimately failure. Despite the detrimental effect of combined mechanical wear with CO2 corrosion has been known for long time, it is seldom considered when selecting and screening tubing materials. The present work proposes an experimental procedure for characterizing the sliding - CO2 corrosion behavior of low carbon steel tubings. Our approach provides a fast and reliable procedure to screen prospective tubing materials. The feasibility of the test rig to reproduce surface degradation under field conditions is illustrated by comparing two J55 tubing grades with different hardness and chromium content. The performance of the tubings is discussed by comparing the results of pure sliding, static corrosion and sliding - CO2 corrosion tests. The results show the damage interaction between mechanical wear and corrosion, thus highlighting their synergy. The role of mechanical properties and chromium content are discussed within this context and the damage mechanisms observed with our experimental simulation test rig are compared to those observed under real field applications.

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