Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1993-01-08
1994-08-30
Bagnell, David J.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
175426, E21B 1016, E21B 1050
Patent
active
053418905
ABSTRACT:
A rotary cone rock bit for drilling boreholes in an earthen formation is disclosed. One or more rotary cones are rotatively retained on a journal bearing connected to the rock bit. These rotary cones form a circumferential heel row with extended ultra hard shaped cutters spaced within the heel row. Each of the shaped cutters form cutting edges that shear a borehole wall formed by the formation as the rotary cone rotates against a bottom of the borehole formed by the formation. The shaped cutters serve to maintain the borehole diameter and to divert formation debris away from bearing surfaces formed between the rotary cone and the journal bearing.
REFERENCES:
patent: 3389761 (1968-06-01), Ott
patent: 3858671 (1975-01-01), Kita et al.
patent: 4203496 (1980-05-01), Baker, III et al.
patent: 4604106 (1986-08-01), Hall et al.
patent: 4940099 (1990-07-01), Deane et al.
patent: 4966627 (1990-10-01), Keshavan et al.
patent: 5025874 (1991-06-01), Barr et al.
patent: 5045092 (1991-09-01), Keshavan
patent: 5131480 (1992-07-01), Lockstedt et al.
patent: 5145016 (1992-09-01), Estes
Cawthorne Chris E.
Portwood Gary
Siracki Michael A.
Bagnell David J.
Smith International Inc.
Upton Robert G.
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