Fluid injection system

Details Fluid injection system Fluid injection system

2005-12-13

2005-12-13

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Processes

C137S486000, C137S487500, C137S624120, C137S554000, C137S625180, C166S310000, C073S249000

Reexamination Certificate

active

06973936

ABSTRACT:
A fluid injection system controls the distribution of fluid from a supply line to a selected well at an adjustable rate. A fluid barrier divides a cylinder into first and second chambers. A multi-position valve comprises a first position for passing fluid from the supply line into the first chamber to displace fluid from the second chamber back through the valve to an injection point, and a second position for passing fluid from the supply line to the second chamber to displace fluid from the first chamber back through the valve to the injection point. A control system in communication with a position sensor times displacement of the fluid barrier to selected positions, and selectively adjusts a variable valve opening to adjust flow rate, switch between the first and second positions, and periodically increase the valve opening for cleaning.

REFERENCES:
patent: 2772664 (1956-12-01), Jones et al.
patent: 3211225 (1965-10-01), Thiessen et al.
patent: 3768510 (1973-10-01), Reves
patent: 4375833 (1983-03-01), Meadows
patent: 4512187 (1985-04-01), Sigwardt
patent: 4512188 (1985-04-01), Erickson
patent: 6745838 (2004-06-01), Watson
patent: 6851444 (2005-02-01), Kohl et al.

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