E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/12 (2006.01) E21B 21/08 (2006.01) E21B 21/10 (2006.01) E21B 23/02 (2006.01) E21B 23/06 (2006.01) E21B 33/129 (2006.01) E21B 33/134 (2006.01) E21B 34/12 (2006.01)
Patent
CA 2043756
A retrievable bridge plug apparatus, and associated methods, are provided for sealing the bore of a drill pipe string to control a well that is flowing out of control.
Brisco David P.
Winslow Donald W.
Haliburton Company
Swabey Ogilvy Renault
LandOfFree
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