Apparatus for positioning deflection wedges

Details Apparatus for positioning deflection wedges Apparatus for positioning deflection wedges

1979-02-16

1981-12-15

Leppink, James A.

Wells

Means for guiding insertable element laterally of well axis

Secured in operative position by movable means engaging well...

175 61, 175 83, E21B 708, E21B 2312

Patent

active

043054625

ABSTRACT:
A deflection wedge is positioned in a long horizontal drill hole by securing it with a shear pin to an extension on a drill string. The extension is turned independently of the drill string to enable a droparm mechanism to actuate a trigger which stops rotation at a predetermined orientation. Rotation is effected by means of a rifle bar mechanism. The rifle bar presses against the bottom of the hole to cause rotation and the trigger declutches the rifle nut when the droparm drops.

REFERENCES:
patent: 2147585 (1939-02-01), Trotter
patent: 2207920 (1940-07-01), Hughes
patent: 2691507 (1954-10-01), Brown
patent: 3011568 (1961-12-01), Grimm

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