BOPI 02 BR/2024 REPERTOIRE NUMERIQUE 41 (21) 1202300475 - PCT/EP2022/063502 (22) 19/05/2022 (30) EP n° 21178068.9 du 07/06/2021 (54) Self-locking threaded connection partially in non-locking engagement. (72) DELBOSCO, Thimothé (FR); OTT, Wesley (FR) et GRANGER, Scott (FR) (73) 1-VALLOUREC OIL AND GAS FRANCE, 54, rue Anatole France, 59620 AULNOYEAYMERIES (FR) et 2-NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, TOKYO 1008071 (JP) (74) S.C.P. AKKUM AKKUM & Associates, No. 1777, Rue 6.261, Auditorium Jean Paul II, Quartier Mbankolo B.P. 4966, YAOUNDE (CM). (57) A threaded connection comprising: a first tubular component (1) having a first male threaded portion (16) and a second male threaded portion (17), a root width in the first male threaded portion (16) decreasing in a direction oriented a first pipe body (3), the root width being constant in the second male threaded portion (17), the second tubular component (2) comprising a female threaded zone (10) having a first female threaded portion (19) with a root width decreasing in a direction oriented towards a second pipe body (5), the connection being partially made up in a selflocking arrangement in order to provide a locking region (18) and a non-locking region (20), a female distal thread (22) of the locking region (18) has a width such that FDTW/TH >= 125%, in which FDTW is a tooth width of the female distal thread (22) of the locking region and TH is the tooth height of said female distal thread (22). Fig. 1 ________________________________________ (11) 21430 Consulter le mémoire (51) B22F 3/16 (2018.01); B22F 3/24 (2018.01); B22F 5/00 (2018.01); C22C 29/00 (2018.01) ;
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