FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to application of coatings in equipment used for operation of oil and gas wells. Proposed coatings of fullerene-based composite or diamond-like carbon or combination thereof feature hardness exceeding 1000 V.H.N. and friction factor smaller than or equal to 0.15 and are used as a protective coatings of oil and gas well equipment. The latter includes one or more cylindrical bodies apart from drill bit.
EFFECT: decreased wear, friction, corrosion, erosion and formation of sediments at devices operated in oil and gas wells.
36 cl, 26 dwg
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