Clamping device for suspending a drill string or casing...

Details Clamping device for suspending a drill string or casing... Clamping device for suspending a drill string or casing...

E - Fixed Constructions

21

B

E21B 19/10 (2006.01) E21B 19/02 (2006.01)

Patent

CA 2712587

Clamping die (15) in a device for engagement with a cylindrical body (4), which clamping die (15) includes a gripping surface (153) that is arranged to be able to extend in parallel with the centre axis of the cylindrical body (4), wherein a groove (154) is provided in each of two side surfaces (151) adjacent to the gripping surface (153) and in close proximity to the gripping surface (153), said groove (154) extending substantially in parallel with the gripping surface (153).

L'invention porte sur une matrice de serrage (15) dans un dispositif destiné à mettre en prise un corps cylindrique (4), laquelle matrice de serrage (15) comprend une surface d'adhérence (153) qui est conçue pour être apte à s'étendre parallèlement à l'axe central du corps cylindrique (4), une rainure (154) étant prévue dans chacune des deux surfaces latérales (151) adjacentes à la surface d'adhérence (153) et à proximité étroite de la surface d'adhérence (153), ladite rainure (154) s'étendant sensiblement parallèlement à la surface d'adhérence (153).

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