Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent
1989-11-27
1991-02-26
Novosad, Stephen J.
Boring or penetrating the earth
Automatic control
Of advance or applied tool weight
175 40, 175 45, 175 61, 175 75, 175 76, 175162, E21B 392, E21B 708
Patent
active
049954652
ABSTRACT:
A drilling method and apparatus for directional drilling of a borehole. The apparatus includes a retrievably mounted downhole monitor for sensing parameters of the drill rod to which a drill bit is attached. A bent-sub is connected with said drill rod behind the drill bit to position the drill bit to extend angularly with respect to the drill rod. An actuator such as a hydraulic ram is provided for exerting thrust along the axis of the drill rod on said drill bit. The drill rod and drill bit is not rotated with the use of a downhole motor. Based upon the signals received from the downhole monitor, the drill rod and bit are pulsed to effect the desired trajectory of the drilling.
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Beck Jeffrey L.
Taylor Larry D.
Conoco Inc.
Novosad Stephen J.
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