Tribological Behavior of Composite Epoxy Coatings for Premium OCTG Threaded Connections

PRIETO, G.; MARINI, C.B.; IRIARTE, M.V.; ABDELABE, J. P.; TUCKART, W. R.

Vitoria

Conferencia; TriboBr 2023; 2023

Premium Oil Country Tubular Goods (OCTG) connections are used in the exploration and production of oil and gas, particularly in applications where high-performance pipes are required to withstand the harsh environments and extreme pressures encountered during drilling and completion operations. OCTG threaded connections are prone to suffering galling and seizure, often due to poor lubrication. This can lead to severe delays during production and large loss-profits.In this work, novel formulations for composite epoxy coatings using MoS2, Bi2S3, and carbon nanotubes (CNTs) were tested on a ring-on-disc apparatus, using a standard testing protocol for OCTG connections. It was found that the combination of these compounds present up to 80% more wear resistance than the traditional ones, while maintaining a low and stable COF.