Lift-through head and swivel

Wells – With below and above ground modification – Head for tool – piston or cleaner

Patent

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Details

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.

REFERENCES:
patent: 2029598 (1936-02-01), Timbs et al.
patent: 2196652 (1940-04-01), Baker
patent: 2630179 (1953-03-01), Brown
patent: 2647582 (1953-08-01), Brown et al.
patent: 3322197 (1967-05-01), Baker et al.
patent: 3616850 (1971-11-01), Scott
patent: 3777819 (1973-12-01), Delano
patent: 3779270 (1973-12-01), Davis
patent: 3971436 (1976-07-01), Lee
patent: 4234216 (1980-11-01), Swanson et al.
patent: 4246967 (1981-01-01), Harris
patent: 4290482 (1981-09-01), Brisco
patent: 4302033 (1981-11-01), Evans et al.
patent: 4624312 (1986-11-01), McMullin
patent: 4655462 (1987-04-01), Balsells
patent: 4678210 (1987-07-01), Balsells
patent: 4804290 (1989-02-01), Balsells
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.

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