Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent
1989-12-01
1991-02-26
Novosad, Stephen J.
Wells
With below and above ground modification
Head for tool, piston or cleaner
15104062, 285 93, 285281, 285 94, 166113, E21B 3305, E21B 3316
Patent
active
049954571
ABSTRACT:
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 mechanism has a cylindrical plunger extending into a bore of the container 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 complementary 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.
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Exhibit A-Drawing of a cement head apparatus sold by Nodeco.
Exhibit B-Advertising brochure of Halliburton Company, 7-15-81.
Exhibit C-Two drawings of cementing head apparatus.
Exhibit D-1982-83 Composite Catalog of Oilfield Equipment & Services, vol. 1, pp. 182 and 1293.
Exhibit F-Advertisement for rotary drilling swivel manufactured by Gray Tool Company (no publishing date given).
Exhibit G-Advertising brochure for Roto-Tek cementing system, (no publishing date given).
Exhibit H-Advertisement for a cementing manifold sold by Lindsey Completion Systems, (no publication date given).
Exhibit I-Drawing of typical prior art casing swivel used for non-lift-through applications, (no publishing date given).
Exhibit J-Photocopy of swivel previously used by assignee of present invention.
Beavers L. Wayne
Duzan James R.
Halliburton Company
Novosad Stephen J.
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