High flow check valve apparatus

Details High flow check valve apparatus High flow check valve apparatus

1979-06-21

1981-03-03

Cline, William R.

Wells

Valves, closures or changeable restrictors

Fluid operated

1375121, 13753311, E21B 3408, F16K 1504

Patent

active

042535247

ABSTRACT:
A check valve apparatus is provided for high volume fluid conduits such as a casing string of an oil well. In order to maximize the fluid delivered from the well, it is essential that the restrictions imposed on the fluid flow path by necessary components in the casing string, such as a standing check valve, provide as little as possible interference with the flow area. This invention provides a valving arrangement including longitudinally extending, separated, parallel fluid inlet and outlet passages interconnected by a plurality of ball valve chambers, with each chamber defining a transverse ball seat and containing a ball cooperating with such seat. The fluid area of the inlet passage decreases from the first chamber to the last in the direction of fluid flow while the fluid area of the outlet passage increases from the first chamber to the last, so that the total fluid area passage through the plurality of valves in their open position is maximized.

REFERENCES:
patent: 980050 (1910-12-01), Black
patent: 1173157 (1916-02-01), Allen
patent: 1613145 (1927-01-01), Trump
patent: 2308876 (1943-01-01), Hammett
patent: 2367893 (1945-01-01), Sheen
patent: 2944794 (1960-07-01), Myers

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