Title:
DRILL BIT WITH FIXED CUTTER ELEMENTS
Document Type and Number:
WIPO Patent Application WO/2014/129905
Kind Code:
A8
Abstract:
A drill bit with fixed cutter elements with - a hollow upper conical pin connector(l ) connectable to the lower module of a drill string, where the upper conical pin connector (1 ) has a transition to - an upper cylindrical module (2) with a central channel (4) for supplying bore fluid from the drill string, equipped with, - a lower bore (43) holding a cylindrical socket (34) from the lower module (3), connecting the upper and lower modules (2,3) of the drill bit, - where the central channel (4) continues down through the lower module (3) and branches out into nozzle channels (40) with nozzles (41 ) ending in the recesses (42) in between the wings (5) with fixed PDC-cutters (51 ), characterized by, - elastic shock-absorber elements (7) arranged in recesses (73) in the cylindrical wall of the bore (43), in the upper cylindrical module (2), where the elastic shock- absorbers (7) are assembled on the bolts (72) extending into the cylindrical socket (34) of the lower module (3).
Inventors:
HELLVIK SVEIN (NO)
Application Number:
PCT/NO2013/000059
Publication Date:
February 26, 2015
Filing Date:
December 31, 2013
Export Citation:
Assignee:
SHELLCON AS (NO)
International Classes:
E21B10/42
Attorney, Agent or Firm:
FLUGES PATENT As (Gamle Fredrikstad, NO)
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