Wells – Processes – Placing or shifting well part
Patent
1990-08-28
1991-09-03
Novosad, Stephen J.
Wells
Processes
Placing or shifting well part
166120, 166126, 166385, 166387, 166237, E21B 33129, E21B 3410, E21B 2300
Patent
active
050444417
ABSTRACT:
A pack-off tubing hanger is shown for use in a tubing string extending from a well surface location to a downhole location within a well casing. The hanger body includes an external packing element and gripping slips which support the hanger body within the surrounding casing. A longitudinal passageway communicates hydraulic pressure from the lower end of the hanger to a setting chamber to hydraulically set the packing elements and actuate the gripping slips. A companion concentric tubing anchor is carried within the internal bore of the hanger and connects the hanger to the tubing string leading to the well surface.
REFERENCES:
patent: 4305465 (1981-12-01), Ellis
patent: 4432417 (1984-02-01), Bowyer
patent: 4479548 (1984-10-01), Gilbert
patent: 4513822 (1985-04-01), Gilbert
patent: 4646842 (1987-03-01), Arnold et al.
patent: 4711326 (1987-12-01), Baugh et al.
Baker Oil Tools Safety Systems Catalog, Mar. 1989, pp. 40 and 41.
Engineering Drawing of Baker Model "DGH" Pack-Off Tubing Hanger, Feb. 10, 1986.
Mechanical Drawing of Baker Single Stream Tubing Hanger Unit 3557, 10/21/76.
Mechanical Engineering Drawing of Baker Model "RC" Pack-Off Tubing Hanger, Feb. 10, 1986.
Baker Model "B" Pack-Off Tubing Hanger, 11/16/81.
Bouldin Brett
Luke Mike
Mooney Frank
Rubbo Dick
Baker Hughes Incorporated
Gunter Jr. Charles D.
Novosad Stephen J.
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