Bubble detector

Details Bubble detector Bubble detector

1977-08-15

1978-12-19

Kreitman, Stephen A.

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 2902

Patent

active

041300106

ABSTRACT:
Apparatus for detecting bubbles in drilling mud so that appropriate corrective action may take place prior to a possible blowout. A low frequency acoustic field is transmitted through the drilling mud which causes the displacement of any bubbles rising through the mud. A high frequency acoustic doppler detection circuit then detects movement of the bubbles in accordance with their displacement by the low frequency field.

REFERENCES:
patent: 2573390 (1951-10-01), Blanchard
patent: 3283562 (1966-11-01), Heisig et al.
patent: 3608272 (1971-09-01), Di Peri et al.
patent: 3640271 (1972-02-01), Horton
patent: 3853500 (1974-12-01), Gassmann et al.
Nishi; "Ultrasonic Detection of Bubbles with Doppler Flow Transducers", Ultrasonics, pp. 173-179, Jul. 1972.

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