Automatic liquid level monitor

Details Automatic liquid level monitor Automatic liquid level monitor

1982-03-08

1983-07-05

Ciarlante, Anthony V.

Measuring and testing

Borehole or drilling

Downhole test

73290V, 367108, G01S 966

Patent

active

043911358

ABSTRACT:
Apparatus for determining the location of the liquid level in a well or borehole. A source of acoustic pressure pulses is coupled to the surface casing so that they are transmitted down the well and reflected by the gas-liquid interface. A transducer is also coupled to the well to produce an electrical signal in response to direct and reflected acoustic pulses occurring in the well. Gating circuitry responds to the transducer for starting and stopping the counting of clock pulses by a digital counter. A digital readout device is used to indicate the depth to the liquid level in the well. The acoustic pulse source is automatically actuated at predetermined times, and the depth to the liquid level and the time are automatically recorded. This produces a record of time and liquid depth which can extend over a period of several days.

REFERENCES:
patent: 2047974 (1936-07-01), Lehr et al.
patent: 2190141 (1940-02-01), Walker
patent: 2232476 (1941-02-01), Ritzmann
patent: 2775748 (1956-12-01), Rod et al.
patent: 3100023 (1963-08-01), Clements
patent: 3100885 (1963-08-01), Welkowitz et al.
patent: 3184969 (1965-05-01), Bolton
patent: 3316997 (1967-05-01), McCoy
patent: 3486377 (1969-12-01), Franchi
patent: 3985030 (1976-10-01), Charlton

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