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AssigneesVallourec Oil and Gas France, Nippon Steel Corporation
InventorsArnaud Verleene, Nicolas Baudin, Cedric Vogt, Adil Jaafar
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The invention concerns a threaded portion of a tubular element for a threaded tubular connection having an axis of revolution, the portion comprising a threading extending over its outer or inner peripheral surface, and a first sealing surface on the peripheral surface, the first sealing surface being capable of producing metal-metal interference with a corresponding second sealing surface belonging to a complementary threaded portion. The threading and the first sealing surface are coated with a metallic anti-galling layer wherein zinc (Zn) is the major element by weight, the metallic anti-galling layer being at least partially coated with a lubricant layer comprising a resin and a dry solid lubricant powder dispersed in the resin.
A threaded portion of a tubular element for a threaded tubular connection having an axis of revolution, said portion comprising a threading extending over its outer or inner peripheral surface, and a first sealing surface on said peripheral surface, said first sealing surface being capable of producing metal-metal interference with a corresponding second sealing surface belonging to a complementary threaded portion, wherein said threading and said first sealing surface are coated with an electrolytically deposited metallic anti-corrosion and anti-galling layer wherein zinc (Zn) is the major element by weight, said electrolytically deposited metallic anti-corrosion and anti-galling layer being at least partially coated with a lubricant layer comprising a resin and a dry solid lubricant powder dispersed in said resin.
Dependencies are inferred from the claim text.