The drill-pipe subs are used at constructing and repairing oil and gas wells to connect the drill string elements of different thread types. Reliability of the equipment, safety of works, and drilling tool maintenance costs depend directly on the threaded connections state.
In process of operating, thread is subjected to impact of high contact loads, vibrations, abrasive pollution, and aggressive external factors. This causes wear of the functional surfaces, increase of the risk of jamming, and decrease of service lifetime of the parts.
In order to increase durability of the external thread, MODENGY 1044 anti-friction solid-film coating is applied onto the drill-pipe sub. It forms a protective layer with low friction coefficient on the surface that reduces probability of thread damage during mounting and dismantling of the connections.
An additional advantage of the coating is high corrosion resistance that provides protection for the parts at operating under complex operational conditions of the drilling equipment.