Apparatus for drilling perforations in well casings

Details Apparatus for drilling perforations in well casings Apparatus for drilling perforations in well casings

1995-12-20

1997-12-30

Schoeppel, Roger J.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 552, E21B 4311

Patent

active

057019584

ABSTRACT:
Apparatus for drilling perforations in a well casing to reinitiate water flow into the casing to restore operation of a well. The apparatus includes a pneumatic drill mounted within a housing which is capable of being lowered into a well casing. The drill is moveable by remote control between a rest position and a working position within the housing to cause a drill bit to pass through a port in the housing to drill perforations at selected locations in the well casing.

REFERENCES:
patent: 1693013 (1928-11-01), Young et al.
patent: 2066409 (1937-01-01), Loring et al.
patent: 4119148 (1978-10-01), Deardorf
patent: 5183111 (1993-02-01), Schellstede
patent: 5286144 (1994-02-01), Griner

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