Sonic fluid level control apparatus

Details Sonic fluid level control apparatus Sonic fluid level control apparatus

1974-12-13

1976-06-29

Abbott, Frank L.

Wells

Processes

With indicating, testing, measuring or locating

166 64, 166314, 417 36, E21B 4700

Patent

active

039659836

ABSTRACT:
Pump-off control apparatus for preventing cavitation of a sub-surface pump which provides artificial lift for fluid produced from a fluid bearing strata located downhole in a borehole. A sound wave is focused downhole and travels down the casing annulus where it strikes the liquid surface and rebounds to a receiver located near the well head. The time lapse of the traveling wave is used to measure the relative location of the liquid surface relative to the pump inlet, thereby enabling the control apparatus to shut-in a well before it can encounter a pump-off condition which can cause fluid pounding.

REFERENCES:
patent: 2240607 (1941-05-01), Buck
patent: 2316494 (1943-04-01), Tipton
patent: 2456456 (1948-12-01), Smith
patent: 2661697 (1953-12-01), Long et al.
patent: 2737256 (1956-03-01), Simmons
patent: 2988640 (1961-06-01), Steele
patent: 3127842 (1964-04-01), Bodine
patent: 3208349 (1965-09-01), Burnett et al.
patent: 3333237 (1967-07-01), Chapman
patent: 3509764 (1970-05-01), Baldwin et al.
patent: 3635081 (1972-01-01), Gibbs

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