E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/04 (2006.01) E21B 33/068 (2006.01) E21B 33/126 (2006.01) E21B 33/128 (2006.01)
Patent
CA 2083477
ABSTRACT A cup-type seal circulating device or a compression type packer seal circulating device for use in running a string of casing into a well bore.
Brisco David P.
Mcguire David D.
Brisco David P.
Haliburton Company
Mcguire David D.
Swabey Ogilvy Renault
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