Arrangement of roller cone inserts

Details Arrangement of roller cone inserts Arrangement of roller cone inserts

E - Fixed Constructions

21

B

E21B 10/16 (2006.01) E21B 10/08 (2006.01)

Patent

CA 2568508

A drill bit having cutting elements disposed on a roller cone surface in a non-linear pattern, wherein at least one of the cutting elements is asymmetrical to its axis of orientation. Also, a method for selecting and adjusting a cutting element orientation based on crater profile geometry which results in increased bottom hole coverage.

Trépan muni d'éléments de coupe placés sur une molette de façon non linéaire, dans laquelle au moins un des éléments de coupe est asymétrique par rapport à son axe d'orientation. En outre, la méthode décrite permet de sélectionner et de régler l'orientation d'un élément de coupe en fonction de la géométrie du cratère, ce qui se traduit par une meilleure couverture du trou.

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