Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent
1987-08-07
1989-04-04
Kisliuk, Bruce M.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
175 76, 175256, E21B 708
Patent
active
048177407
ABSTRACT:
Apparatus for effecting a change in the direction of a downhole rotary drilling tool comprises a bent housing disposed between the bottom end of a downhole motor and a tubular housing connected to the drilling tool. The bent housing is angularly adjustable relative to the motor housing and the connecting housing is provided with an eccentric external surface upon which an annular eccentric stabilizer is adjustably mounted. In a modification, a second annular eccentric stabilizer is mounted on the upper portion of the motor housing. Selective angular adjustment of the eccentric stabilizers relative to their mounting housings, coupled with angular adjustment of the bent housing effects any desired shift in angular position of the rotary drilling tool to effect a desired change in the direction of the drilling with a minimum of side wall interference.
REFERENCES:
patent: 4077657 (1978-03-01), Trzeciak
patent: 4220214 (1980-09-01), Benoit
patent: 4303135 (1981-12-01), Benoit
patent: 4485879 (1984-12-01), Kamp et al.
patent: 4492276 (1985-01-01), Kamp
patent: 4522272 (1985-06-01), Beimgraben
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patent: 4667751 (1987-05-01), Geczy et al.
patent: 4694914 (1987-09-01), Obrecht
1979 Drilling Technology Conference Paper entitled "Turbo-drilling Deviated Holes in Abu Dhabi".
Oct. 1982 Journal of Petroleum Technology Article entitled "Kicking Off in Large Diameter Holes", Durand et al.
Baker Hughes Incorporated
Kisliuk Bruce M.
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