E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/08 (2006.01) E21B 29/06 (2006.01) E21B 33/127 (2006.01)
Patent
CA 2688186
A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.
Gantt Lamar L.
Gober Howard
Hearn David
Conocophillips Company
Osler Hoskin & Harcourt Llp
LandOfFree
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