BOPI 04 BR/2024 REPERTOIRE NUMERIQUE 21 2-VALLOUREC OIL AND GAS FRANCE, 54 rue Anatole France, AULNOYE-AYMERIES 59620 (FR) (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quater, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) An oil-well metal pipe according to the present disclosure can be fastened with high torque even when the oil-well metal pipe has a large diameter. An oil-well metal pipe (1) according to the present disclosure has a pipe main body (10) including a first end portion (10A) and a second end portion (10B). The pipe main body (10) includes a pin (40) formed at the first end portion (l0A), and a box (50) fom1ed at the second end portion (10B). The pin (40) includes a pin contact surface (400) including an external thread part (41), and the box (50) includes a box contact surface (500) including an internal thread part (51). The oil-well metal pipe (1) according to the present disclosure also includes a resin coating (100) containing a resin, a solid lubricant powder, and copper phthalocyanine on or above at least one of the pin contact surfaces (400) and the box contact surface (500). ________________________________________ (11) 21495 Consulter le mémoire (51) E21B 17/042 (2018.01) ; F16L 15/04 (2018.01) (21) 1202300060 - PCT/JP2021/031212 (22) 25/08/2021 (30) JP n° 2020-143510 du 27/08/2020 (54) Metal pipe for oil well. (72) NAKAMURA, Keiichi (JP); BENIYA, Yuki (JP) et KURANISHI, Takao (JP) (73) 1-NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, TOKYO 1008071 (JP) et 2-VALLOUREC OIL AND GAS FRANCE, 54, rue Anatole France, AULNOYE-AYMERIES 59620 (FR) (74) Cabinet Spoor & Fisher Inc. Ngwafor & Partners, The House of Gideon, Golf/Bastos Quater, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) This invention provides an oil-well metal pipe which is capable of achieving both high yield torque and excellent galling resistance in a compatible manner. An oil-well metal pipe of the present disclosure includes a pipe main body. The pipe main body includes a pin (40) that is formed at the first end portion (10A), and a box that is formed at the second end portion. A plating layer is formed on a first contact surface, which is 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 plating layer. An arithmetic average roughness Ra of a second contact surface, which is the other of the pin contact surface (400) and the box contact surface, is 0.5 to 10.0 µm, and a semisolid or liquid antirust coating (80) is formed on the second contact surface.
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