Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent
1975-06-09
1976-12-14
Purser, Ernest R.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Tool position direction or inclination measuring or...
175 61, 175 71, 175 94, 175230, E21B 47022, E21B 706
Patent
active
039970086
ABSTRACT:
The casing of a drill motor is provided with a deflection barrel free to turn thereon to position the barrel relative to the motor to apply lateral force to the side of the motor directed along any desired radius. A gravity actuated mercury potentiometer connected to the barrel provides a barrel orientation responsive electric transmitter for remote indication of the barrel orientation in the hole being drilled. An annular piston drives a key longitudinally between a straight keyway carried by the barrel and a helical keyway carried by the motor to position the barrel azimuthally about the motor axis. A manifold connected to the motor provides means for making connection to fluid and electric conduits for operating the motor, the piston, and the transmitter.
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Favreau Richard E.
Purser Ernest R.
Robinson Murray
Smith International Inc.
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