One trip window cutting tool method and apparatus

Details One trip window cutting tool method and apparatus One trip window cutting tool method and apparatus

1990-12-17

1992-05-05

Melius, Terry Lee

Wells

Means for guiding insertable element laterally of well axis

1661176, 175 61, 175391, E21B 708, E21B 2906

Patent

active

051099241

ABSTRACT:
The present invention pertains to a device and method for drilling a secondary or deflection hole from a cased drill hole in underground rock or geologic formations. The device disclosed herein includes a deflection wedge unit mountable via a packer in the drill hole and a pilot cutting tool, all mountable to a drill string. A deflection guide actuated by deflection ramp on the deflection wedge unit initiates the deflection drilling process.

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