Geometrical instruments – Indicator of direction of force traversing natural media – Borehole direction or inclination
Patent
1994-12-12
1996-07-23
Will, Thomas B.
Geometrical instruments
Indicator of direction of force traversing natural media
Borehole direction or inclination
33311, E21B 47022
Patent
active
055377530
ABSTRACT:
A bore hole inclinometer device for use in core drilling employing hollow drill rods, and a core barrel, the device having, an elongated casing dimensioned to fit within the hollow drill rods, and having at its lower end an attachment for a core barrel, and at its upper end, an attachment for the wire by which it is hoisted and lowered through the hollow drill rods, an inclinometer within the casing operable to respond to the inclination of the casing to provide an inclination reading, a sensor for sensing the inclination of the casing and providing an inclination signal proportional to the inclination of the casing, an electrical circuit for powering the inclinometer, for receiving the inclination signal, and, an electrical power supply for powering the electrical circuit.
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Diamond Drill Handbook--published by J. K. Smit, 1980 no month pp. 340-343.
Otte Hubert J.
Roosman Gosta
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