Positioning deflection wedges

Details Positioning deflection wedges Positioning deflection wedges

1979-09-27

1981-08-18

Novosad, Stephen J.

Wells

Means for guiding insertable element laterally of well axis

166 72, 166319, E21B 706, E21B 2304, E21B 2906

Patent

active

042841364

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 piston-operated rifle bar mechanism. The piston is actuated by passing drilling fluid down the drill string. The trigger causes a valve to be closed to lock the piston hydraulically in position and thus prevent further rotation. The wedge is now secured by axial pressure on the drill string.

REFERENCES:
patent: 2632630 (1953-03-01), Storm
patent: 2691507 (1954-10-01), Brown
patent: 2953350 (1960-09-01), Moore
patent: 3000440 (1961-09-01), Malcomb
patent: 3215204 (1965-11-01), Sims

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