Wells – Processes – Disassembling well part
Patent
1986-09-16
1988-08-02
Dang, Hoang C.
Wells
Processes
Disassembling well part
166163, 166169, 166237, 166242, 285 83, E21B 2300
Patent
active
047608846
ABSTRACT:
An apparatus and method of operation for the release of concentric tubing strings used in well operations. In the preferred embodiment, the apparatus includes a tubing release assembly and an air chamber assembly as an actuating tool. The tubing release assembly comprises a housing, release sleeve, adjustment nut, pull tube mandrel, pull tube adapter, pull tube latch and retainer ring. The air chamber assembly as an actuating tool comprises a lower end plug, a housing, a housing retainer, seal element assembly, upper and lower shear pin retainers, upper element cone, release ring, setting mandrel, upper end plug, retrieving mandrel, and match drill assembly. Alternately, the tubing release assembly may be actuated by a ball and increased fluid pressure level within the interior of the tubing release assembly.
REFERENCES:
patent: 3047072 (1962-07-01), Peters et al.
patent: 3997006 (1976-12-01), Wetzel
patent: 4175778 (1979-11-01), Nunez et al.
patent: 4190107 (1980-02-01), Oden et al.
patent: 4526229 (1985-07-01), Dickerson
patent: 4526233 (1985-07-01), Stout
patent: 4554981 (1985-11-01), Davies
patent: 4570714 (1986-02-01), Turner et al.
patent: 4601492 (1986-07-01), George
George Flint R.
George Kevin R.
Haugen David M.
Dang Hoang C.
Duzan James R.
Gilbert III E. Harrison
Halliburton Company
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