Method of and apparatus for perforating boreholes

Details Method of and apparatus for perforating boreholes Method of and apparatus for perforating boreholes

1977-03-28

1979-05-08

Pate, III, William

Boring or penetrating the earth

Boring with explosion in inaccessible hole

With position orienting or indicating

166 55, 166297, E21B 43116

Patent

active

041531183

ABSTRACT:
A perforator apparatus includes an elongate body having a center of gravity and characterized by a longitudinal axis extending through the center of gravity. The body is supported at a point substantially laterally displaced from the axis having the center of gravity therein, so that the body of the perforator apparatus pivots into a predetermined orientation under the action of gravity when the apparatus is lowered into a nonvertically aligned borehole. The apparatus includes structure for discharging perforating charges in directions having a predetermined orientation relative to a line extending from the point of suspension through the axis having the center of gravity therein. By this means the directions of the perforating charges may be oriented relative to a thin portion of a cement structure extended between the borehole and a casing disposed therein.

REFERENCES:
patent: 2952319 (1960-09-01), Popham
patent: 3307626 (1967-03-01), Bielstein
patent: 3426849 (1969-02-01), Brumble, Jr.
patent: 3554299 (1971-01-01), Sullivan
patent: 3707195 (1972-12-01), Lanmon

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