E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/02 (2006.01) E21B 17/046 (2006.01)
Patent
CA 2328849
In an assembly for cylindrical drill pipes made for the transport of different kind of fluids, it is the object of the invention to provide a combined flange assembly, that can combine the functions and can be assembled under low time consumption and at low costs. This object is accomplished in, that the connecting means are axially directed bolts inserted in the outer wall of the drill rod and extending axially past the end of the drill rod into internally threaded blind holes in the next drill rod to be connected to the first drill rod, and that each terminal surface of a drill rod is made with arrangements for at least one coupling means for the transport of different kind of fluids in the drill string.
L'invention concerne un raccord à bride combiné destiné à des tiges de forage cylindriques conçues pour le transport de différentes sortes de fluides. Ce raccord à bride peut combiner plusieurs fonctions et peut être assemblé en peu de temps et à faible coût. Selon l'invention, le dispositif consiste en des boulons à direction axiale insérés dans la paroi extérieure de la tige de forage (1) et s'étendant axialement au-delà de l'extrémité de la tige de forage (1) pour pénétrer dans des trous borgnes (21, 22) intérieurement filetés pratiqués sur la tige de forage voisine. Selon l'invention, chaque surface terminale d'une tige de forage est pourvue d'un mécanisme (13-17, 23-27) destiné à au moins un dispositif de raccordement (31, 33) pour permettre le transport de différentes sortes de fluides dans le train de tiges.
Bull Housser & Tupper Llp
Welltec A/s
Welltec Aps.
LandOfFree
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