Gas lift valve and method of presetting

Details Gas lift valve and method of presetting Gas lift valve and method of presetting

1982-02-08

1984-04-10

Cohan, Alan

Fluid handling

Processes

Cleaning, repairing, or assembling

137155, 417112, F04F 120

Patent

active

044415192

ABSTRACT:
A gas lift valve having an adjustable stop for limiting valve stem travel such that the bellows may be preset to assure full valve opening in operation. To preset the valve, the stop is set so that the maximum stem travel is greater than that desired in operation, and an excess operating pressure is applied. The bellows is thereby permanently partially retracted so as to prevent the bellows from limiting stem travel to a distance less than the desired travel when the valve is in operation. The adjustable stop is repositioned to establish the operating stem travel before the valve is placed in use.

REFERENCES:
patent: 2892415 (1959-06-01), McGowen
patent: 2941078 (1959-11-01), McGowen
patent: 3192869 (1965-07-01), McCarvell
patent: 4239082 (1980-12-01), Terral
Composite Catalog of Oilfield Equipment and Services; Gulf Publishing Co., 1978-1979, p. 1172.

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