Patent ID: 6550553
Filing Date: 2003-04-22
Classification: E21B

Abstract:
Apparatus for boring a hole from an inside of a tube outwardly perpendicular to a longitudinal axis of the tube, said apparatus comprising:a drill shoe having a longitudinal axis and being positionable in the tube, said shoe having an inlet, an outlet perpendicular to said shoe longitudinal axis and a passageway connecting said inlet and outlet; a torsional load transmitting element disposed in said passageway; a hole saw connected to one end of said torsional load transmitting element; and a motor rotatably connected to the other end of said torsional load transmitting element; whereby rotation of said torsional load transmitting element by said motor rotates said hole saw to bore through the tube from the inside of the tube outwardly perpendicular to the longitudinal axis of the tube.