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

E - Fixed Constructions

21

B

255/7

E21B 7/08 (2006.01) E21B 7/06 (2006.01) E21B 29/06 (2006.01)

Patent

CA 2033048

ABSTRACT OF THE DISCLOSURE 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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