E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/17
E21B 33/14 (2006.01) E21B 33/05 (2006.01) E21B 33/16 (2006.01)
Patent
CA 2029594
Abstract Of The Disclosure A cementing head apparatus includes a container body having a body bore therethrough. Upper and lower releasing mechanisms are associated with the container body. The lower releasing mecha- nism has a cylindrical plunger extending into a bore of the con- tainer body. A spherical releasing ball rests upon the plunger of the lower releasing mechanism. The upper releasing mechanism is identically constructed and is associated with a releasing dart. Upper and lower ends of the container body have complemen- tary male and female straight threads with associated O-ring seals defined therein. A lifting sub is directly connected to the upper thread and has a loading bore defined therethrough. A cap closes an upper end of the loading bore of the lifting sub. A swivel is directly connected to the straight thread at the lower end of the container body.
Haliburton Company
Swabey Ogilvy Renault
LandOfFree
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