METAL PIPE FOR OIL WELLS

An oil-well metal pipe according to the present disclosure can be fastened with high torque. An oil-well metal pipe (1) according to the present disclosure includes a resin coating (100) on or above at least one of a pin contact surface (400) and a box contact surface (500). The resin coating (100)...

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Bibliographische Detailangaben
Hauptverfasser:	IWAKI, Yuichi, TOMIYASU, Ken, MATSUMOTO, Keishi, ABE, Tomoka, OCHIAI, Mamoru
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An oil-well metal pipe according to the present disclosure can be fastened with high torque. An oil-well metal pipe (1) according to the present disclosure includes a resin coating (100) on or above at least one of a pin contact surface (400) and a box contact surface (500). The resin coating (100) contains: an epoxy resin: 40.0 to 97.0 mass%; a magnesium silicate hydroxide powder: 3.0 to 50.0 mass%; TiO2: 0 to 10.0 mass%; a wax: 0 to 10.0 mass%; a fluorine-based additive: 0 to 20.0 mass%; and graphite: 0 to 10.0 mass%; and satisfies Formula (1): CW+CF+CG/CMg+CTiO2+CSi≤0.28 where, in Formula (1), a content in mass% of the wax is substituted for Cw, a content in mass% of the fluorine-based additive is substituted for CF, a content in mass% of the graphite is substituted for CG, a content in mass% of the magnesium silicate hydroxide powder is substituted for CMg, a content in mass% of the TiO2 is substituted for CTiO2, and a content in mass% of the silane coupling agent is substituted for CSi.