Metal pipe for oil well

Provided is a metal pipe for an oil well capable of achieving compatibility between a high yield torque and an excellent seize resistance. The metal pipe for an oil well according to the present disclosure comprises a pipe main body. The pipe main body includes a pin (40) formed at a first end porti...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA, Keiichi, BENIYA, Yuki, KURANISHI, Takao
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a metal pipe for an oil well capable of achieving compatibility between a high yield torque and an excellent seize resistance. The metal pipe for an oil well according to the present disclosure comprises a pipe main body. The pipe main body includes a pin (40) formed at a first end portion (10A) and a box formed at a second end portion. A plated layer is formed on a first contact surface being one of a pin contact surface (400) of the pin (40) and a box contact surface of the box, and a solid lubricant layer is formed on the plated layer. A second contact surface being the other of the pin contact surface (400) and the box contact surface has an arithmetic mean roughness Ra of 0.5-10.0 μm, and a rust-preventive coating film (80) in a semi-solid state or a liquid state is formed on the second contact surface.