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
1983-03-08
1985-06-11
Novosad, Stephen J.
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 61, 175107, E21B 708
Patent
active
045222720
ABSTRACT:
An apparatus is provided for effecting a change in direction of a rotary drill bit relative to a work string. Two tubular components incorporated into the work string have a rotationally adjustable connection for angularly displacing the drill bit axis relative to the tubing string. One embodiment has the connection between a housing for the shaft of the drill bit and the housing for the motor which drives the shaft. The connection comprises a pair of cylindrically disposed interengagable surfaces formed on the adjacent ends of the motor shaft housing and the drill bit housing, which have axes that are slightly angularly displaced from the housing axes.
REFERENCES:
patent: 3586116 (1971-06-01), Tiraspolsky et al.
patent: 4077657 (1978-03-01), Trzeciak
patent: 4303135 (1981-12-01), Benoit
patent: 4309048 (1982-01-01), Ahlf et al.
Baker Oil Tools, Inc.
Goodwin Michael
Novosad Stephen J.
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