Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1996-07-15
1998-09-08
Dang, Hoang C.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
166 50, 166 55, 1661176, E21B 2906
Patent
active
058031766
ABSTRACT:
A method for milling an opening in a tubular in a wellbore, the method comprising installing a mill guide in the tubular at a desired milling location, inserting milling apparatus through the tubular and through the mill guide so that the milling apparatus contacts the tubular at the desired milling location and contacts and is directed toward the tubular by the mill guide, and milling an opening in the tubular. In one aspect the method includes installing a whipstock in the tubular and disposing the mill guide adjacent the whipstock to protect a concave portion of the whipstock. In one aspect the method includes retrieving the mill guide from the wellbore and in another aspect includes retrieving the whipstock from the wellbore.
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