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AssigneesVallourec Mannesmann Oil & Gas France, Sumitomo Metal Industries, Ltd.
InventorsEliette Pinel, Eric Gard, Nicolas Baudin
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A thin adhesive lubricating composition that can cover at least one thread and a screwing abutment of a threaded element of a component of a tubular threaded joint. The screwing abutment can bear against another abutment of another component of the tubular threaded joint in a terminal make up phase. The lubricating composition includes a matrix in which there is dispersed at least one braking additive selected to impart thereto, in addition to lubrication, a coefficient of friction to make it possible to obtain a torque on shoulder resistance value at least equal to a threshold value.
A film-forming lubricating composition for make up of threaded joints suitable for covering at least one thread and a screwing abutment of a threaded element of a component of a tubular threaded joint with a film in the solid state which is adhesive to said thread and said screwing abutment, said screwing abutment being intended to bear against another abutment of another component of said tubular threaded joint in the terminal make up phase and said lubricating composition comprising a matrix, it further comprising at least one braking additive which is dispersed in the matrix and selected in order to impart to the composition, in addition to lubrication, a coefficient of friction selected in such a way as to obtain a torque on shoulder resistance value which is at least equal to a threshold value.
A threaded element of a component of a tubular threaded joint, said threaded element comprising at least one thread and a screwing abutment against which another abutment of another component of said tubular threaded joint is to bear at the end of make up,
Dependencies are inferred from the claim text.