Boring or penetrating the earth – With below-ground tool drive prime mover – With positive connection between tool and support shaft for...
Patent
1996-09-13
1997-09-30
Bagnell, David J.
Boring or penetrating the earth
With below-ground tool drive prime mover
With positive connection between tool and support shaft for...
175343, 285263, 464 19, 464152, E21B 1062, E21B 1705
Patent
active
056718160
ABSTRACT:
A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for straight drilling, directional drilling and navigational drilling. The device can be incorporated into both drag bits and roller-type "rock" bits. Preferred embodiments include a flexible sub connecting the crown to the shank portion and having reduced stiffness relative to the drill string. Alternatively, a spherical universal joint or trunnion type universal is used. Replaceable lugs increase durability and reliability of the universal. The device equalizes the loads on cutters while reducing wear, average loads, and impact loads on cutters. Bore hole diameter and chatter of the bit in the bore hole are reduced, promoting maximum efficiency and rate of penetration as wobble and precession are minimized.
REFERENCES:
patent: 1702757 (1929-02-01), Zublin
patent: 1971480 (1934-08-01), Earley
patent: 2069603 (1937-02-01), Earley
patent: 2402238 (1946-06-01), Carpenter
patent: 2779570 (1957-01-01), Roper
patent: 2938710 (1960-05-01), Tannehill
patent: 3263446 (1966-08-01), Wiggns, Jr.
patent: 3730286 (1973-05-01), Weiner
patent: 4013134 (1977-03-01), Richmond et al.
patent: 4485879 (1984-12-01), Kamp et al.
patent: 4492276 (1985-01-01), Kamp
patent: 4527637 (1985-07-01), Bodine
patent: 4610307 (1986-09-01), Jurgens et al.
patent: 4699224 (1987-10-01), Burton
patent: 4739842 (1988-04-01), Kruger et al.
patent: 4739843 (1988-04-01), Burton
patent: 4848486 (1989-07-01), Bodine
patent: 4899835 (1990-02-01), Cherrington
patent: 4904228 (1990-02-01), Frear et al.
patent: 5101915 (1992-04-01), Witte
patent: 5343967 (1994-09-01), Kruger et al.
patent: 5355968 (1994-10-01), Smith
patent: 5503236 (1996-04-01), Tibbitts
Bagnell David J.
Baker Hughes Incorporated
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