Positioning of deflection wedges

Details Positioning of deflection wedges Positioning of deflection wedges

1982-03-04

1984-01-24

Purser, Ernest R.

Wells

Combined

1661175, 166318, 166330, E21B 4300, E21B 3410

Patent

active

044270623

ABSTRACT:
Deflection wedges are positioned in a generally horizontal drill hole in a predetermined orientation by means of a device which fits on the end of a drill string and is positioned in the hole. The deflection wedges positioned at the end of the device, and the device includes a unit which triggers at the predetermined angular orientation, to indicate that the wedge is correctly oriented. The orientation unit has a through passage for pressure fluid and a transverse passage intersecting the through passage. A blocking member is movable in the transverse passage and at a particular orientation moves along the transverse passage across the through passage. When crossing the through passage, the blocking member is entrained by the pressure fluid flow and moves to a position where it blocks the through passage, thus providing a signal to an operator that the unit is correctly positioned. The wedge is then secured in that position and the device withdrawn from the hole.

REFERENCES:
patent: 3095924 (1963-07-01), Frisby
patent: 4284136 (1981-08-01), Grabe
patent: 4305462 (1981-12-01), Eilers et al.

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