Well tubing anchor with automatic slip release

Details Well tubing anchor with automatic slip release Well tubing anchor with automatic slip release

1976-08-30

1978-04-25

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

166212, 166217, E21B 2304, E21B 4000

Patent

active

040858049

ABSTRACT:
A well tubing anchor incorporates means to suddenly unblock movement of slips relative to a wedge surface upon predetermined build-up of well fluid pressure exerted on a piston or pistons that urge the slips axially.

REFERENCES:
patent: 2687778 (1954-08-01), Dunn
patent: 2818926 (1958-01-01), Webb
patent: 2823754 (1958-02-01), Ault
patent: 3211227 (1965-10-01), Mott
patent: 3374837 (1968-03-01), Page et al.
patent: 3468258 (1969-09-01), Arutunoff
patent: 3608634 (1971-09-01), Cochran
patent: 3976133 (1976-08-01), Allen

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