E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 29/06 (2006.01) E21B 4/18 (2006.01) E21B 7/06 (2006.01) E21B 7/08 (2006.01) E21B 29/00 (2006.01) E21B 29/02 (2006.01)
Patent
CA 2210573
Apparatus and associated methods of using provide convenient and economical forming of an opening through a tubular structure in a subterranean well to provide access to a parent wellbore across which the tubular structure extends. In a preferred embodiment, a milling guide has a guide profile formed thereon which is operative to guide a cutting tool to contact the tubular structure. An anchor portion of the milling guide grippingly engages the tubular structure to thereby axially and rotationally align the milling guide with the tubular structure.
Blizzard William
Durst Douglas
Gano John C.
Halford Gene
Longbottom James R.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Weatherford/lamb Inc.
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