Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1982-04-30
1984-08-14
Novosad, Stephen J.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166 65R, 166332, E21B 3414, E21B 4312
Patent
active
044651392
ABSTRACT:
A method and apparatus for installing in a well conduit by a single trip on an auxiliary conduit a combination well condition sensing device and flow cut off valving elements. The cooperating valving elements are of annular configuration and the auxiliary conduit passes through the bore of the valving elements and is mechanically connected to one of the valving elements. The entire apparatus may be run into the well conduit in a single trip on the auxiliary conduit and actuated to a flow shut off position by longitudinal manipulation of the apparatus. Pressurization of the upper well conduit and secondary manipulation of the apparatus and the auxiliary conduit permits the return of the valving elements to an open flow position.
REFERENCES:
patent: 3134441 (1964-05-01), Barry et al.
patent: 3327781 (1967-06-01), Nutter
patent: 3791445 (1979-02-01), True
patent: 4050512 (1977-09-01), Giebeler
patent: 4094359 (1978-06-01), King
Gunn Robert J.
Loveday Thomas L.
Marquez, Jr. Vincent F.
Payne R. Edward
Baker Oil Tools, Inc.
Neuder William P.
Novosad Stephen J.
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