Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...
Patent
1975-12-22
1977-08-09
Leppink, James A.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
175 61, 175107, E21B 708, E21B 312
Patent
active
040404951
ABSTRACT:
The housing of an in-hole drill motor is provided with a deflection barrel to apply lateral force to the side of the housing directed along any desired radius. The barrel is fixedly attached to a pipe string and the motor is fixedly attached to the barrel inside the barrel. The barrel is oriented and axial force is applied to the motor housing through the pipe string from without the hole, using orientation and other signals transmitted from within the hole adjacent the motor. The signals are transmitted through an electrical conduit housed within a hydraulic conduit used to supply fluid to expand the deflection barrel shoes. The hydraulic and electric conduits are supported within the pipe string by shock mounts fixedly attached to the hydraulic conduit. The annulus between the hydraulic conduit and the pipe string provides means to transmit fluid for driving the motor and removing the detritus formed by a drill bit driven by the motor. The out-of-hole connections to the pipe string annulus and the hydraulic and electric conduits are made through a hydro-electric triple swivel. A rate of direction change limiting mechanism mounted between the bit and the barrel for rotation with the bit prevents the deflection barrel from changing hole direction too rapidly. Instruments out of the hole can be used to indicate the hole characteristics detected in the hole.
REFERENCES:
patent: 2500267 (1950-03-01), Zublin
patent: 2890859 (1959-06-01), Garrison
patent: 3141512 (1964-07-01), Gaskell et al.
patent: 3280923 (1966-10-01), Muench
patent: 3326008 (1967-06-01), Baran et al.
patent: 3457999 (1969-07-01), Massey
patent: 3853186 (1974-12-01), Dahl et al.
patent: 3888319 (1975-06-01), Bourne, Jr. et al.
Garrett William R.
Kellner Jackson M.
Leppink James A.
Robinson Murray
Smith International Inc.
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