Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent
1992-02-13
1994-03-15
Melius, Terry Lee
Wells
With below and above ground modification
Head for tool, piston or cleaner
166 78, E21B 3316
Patent
active
052939332
ABSTRACT:
No swivel head with manifold assembly having remote control valves and plug release plungers. The assembly comprises a body connectable to a tool string, and a cementing manifold connectable to the cement source. The cementing manifold has remotely controllable cement control valves incorporated therein. The manifold is rotatably mounted on the body to provide continuous fluid communication between the manifold and body even when the body is rotating with respect to the manifold. The rotatable mounting is provided by a swivel connection comprising a mandrel extending from the body and a sleeve connected to the manifold. The swivel connection also provides continuous communication between a pressure line, extending from the sleeve to a pressure supply, and another pressure line, extending from the mandrel to a dart or ball releasing mechanism. This allows the releasing mechanism to be actuated even when the body is rotating with respect to the manifold and when the entire apparatus is being reciprocated. Preferably, another swivel connection is used which also provides continuous fluid communication between the manifold and body. A plug release indicator is also provided in one preferred embodiment.
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Exhibit A--Drawing of a cement head apparatus sold by Nodeco (Undated but admitted to be prior art).
Exhibit B--Advertising brochure of Halliburton Company, Jul. 15, 1981.
Exhibit C--Two drawings of cementing head apparatus--Undated but admitted to be prior art.
Exhibit D--1982-83 Composite Catalog of Oilfield Equipment & Services, vol. 1, p. 1293.
Exhibit E--1982-83 Composite Catalog of Oilfield Equipment & Services, vol. 1, p. 18.
Exhibit F--Advertisement for rotary drilling swivel manufactured by Gray Tool Company (Undated but admitted to be prior art).
Exhibit G--Advertising brochure for Roto-Tek cementing system (Undated but admitted to be prior art).
Exhibit H--Advertisement for a cementing manifold sold by Lindsey Completion Systems (Undated but admitted to be prior art).
Exhibit I--Drawing of typical prior art casing swivel used for non-lift-through applications (Undated but admitted to be prior art).
Exhibit J--Photocopy of swivel previously used by assignee of present invention (Undated but admitted to be prior art).
Halliburton Services Sales & Service Catalog No. 43 (1985), pp. 2423-2426.
Duzan James R.
Halliburton Company
Kennedy Neal R.
Melius Terry Lee
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