Choke for drilling or production use

Details Choke for drilling or production use Choke for drilling or production use

1982-06-01

1985-09-10

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

13762537, 251210, F16K 1107, F16K 324, F16K 4704

Patent

active

045400229

ABSTRACT:
A choke is provided having a stationary tubular flow nozzle with throttling ports formed through its side wall. A movable tubular throttling ring may be moved over the nozzle to restrict or close the ports. The required liquid-tight seal or shut-off is obtained with annular seal surfaces formed on the nozzle and ring but remote from and upstream of the ports, so that erosion of these seal surfaces, by the high velocity streams passing through the ports, is minimized.

REFERENCES:
patent: 285955 (1883-10-01), Barry
patent: 791256 (1905-05-01), Durrant
patent: 920392 (1909-05-01), Rider
patent: 2023350 (1935-12-01), Armstrong
patent: 2327366 (1943-08-01), Nampa
patent: 3521853 (1970-07-01), Gillis, Jr. et al.
patent: 4376448 (1983-03-01), Skough

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