Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1988-10-17
1989-07-25
Novosad, Stephen J.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166154, 166166, 166289, 166376, E21B 3313
Patent
active
048504327
ABSTRACT:
In a downhole staging apparatus for delivering fluidized cement sequentially into two levels of substrate which enclose a wellbore casing. Said apparatus comprises a primary cement discharge port, and one or more secondary or lateral cement discharge ports. A sleeve is operably carried in the apparatus, being adjustable to close the secondary lateral port when a cementing operation is completed. A sleeve actuating tool is cooperative with said cementing apparatus, being remotely operable to close the lateral cement discharge port to assure that no communication exists between the cementing apparatus and the wellbore after the cementing operation is completed.
REFERENCES:
patent: 2435016 (1948-01-01), Pitts
patent: 2998075 (1961-08-01), Clark, Jr.
patent: 3223160 (1965-12-01), Baker
patent: 3768556 (1973-10-01), Baker
patent: 3811500 (1974-05-01), Morrisett et al.
patent: 4190112 (1980-02-01), Davis
patent: 4260017 (1981-04-01), Nelson et al.
patent: 4421165 (1983-12-01), Szarka
patent: 4442894 (1984-04-01), Callihan et al.
patent: 4669541 (1987-06-01), Bissonnette
patent: 4674569 (1987-06-01), Revils et al.
Cade William B.
Porter Gary L.
Burns Robert B.
Kulason Robert A.
Melius Terry Lee
Novosad Stephen J.
O'Loughlin James J.
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