E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01) E21B 21/10 (2006.01) E21B 33/16 (2006.01)
Patent
CA 2094884
CEMENTING APPARATUS ABSTRACT There is disclosed an assembly of parts for use in cementing a casing string in a well bore comprising a float collar connectible as part of the string, a cement plug lowerable onto the collar, and a wiper plug lowerable onto the cement plug, the lower end of the cement plug having threads for limited make-up with threads on the upper end of the collar and the lower end of the wiper plug having threads for limited make-up with the cement plug, so as to limit rotation between them.
Cole Frank
Coone Malcolm G.
Davis-Lynch Inc.
Finlayson & Singlehurst
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