Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent
1978-12-07
1980-09-02
Novosad, Stephen J.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Tool position direction or inclination measuring or...
175 61, 175 73, 175325, E21B 708, E21B 710
Patent
active
042202132
ABSTRACT:
The low side of a well bore drilled by a rotary drill string with a drill bit thereon is instrumentally determined as to direction and inclination. An eccentric tubular member is rotatably supported on the drill string and is provided with projection means extending beyond the drill bit diameter and lowered into the well bore. The eccentric tubular member rotates so that the heavy side thereof rests on the low side of the well bore and positions the projection thereon in a predetermined circumferentially spaced and angular relationship relative to the low side of the well bore so that the projection engages the well bore wall during drilling operations and urges the bit laterally of the well bore.
During drilling operations, the projection means assumes authority over the drill bit since it extends beyond the diameter of the drilling bit and thus positions the drilling bit laterally in the well bore in a predetermined manner as the drill string is rotated to drill the well bore.
The self orienting directional drilling control arrangement includes the eccentric member, support means to support the member in the drill string for relative rotation therebetween and the projection means on the eccentric member which is circumferentially spaced relative to the heavy side thereof and extends radially beyond the drill bit diameter which is secured in the drill string.
REFERENCES:
patent: 2712434 (1955-07-01), Giles et al.
patent: 3092188 (1963-06-01), Farris et al.
patent: 3306378 (1967-02-01), Williams, Jr.
patent: 3454308 (1969-07-01), Kennedy
patent: 3880246 (1975-04-01), Farris
patent: 3982594 (1976-09-01), Berthiaume
patent: 4076084 (1978-02-01), Tighe
patent: 4102552 (1978-07-01), Kellner
Hayden Jack W.
Novosad Stephen J.
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