Sand detection

Details Sand detection Sand detection

1978-11-02

1980-12-23

Yasich, Daniel M.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73155, G01N 1507

Patent

active

042402875

ABSTRACT:
A method and apparatus for detecting sand particles in a flowing fluid, for example, the production from a gas or oil well. An acoustic transducer is used to detect the sand particles and the resulting signal is filtered to pass a frequency band of 50 to 500 kiloherz. A pulse height discriminating means and pulse counter is provided for counting the number of pulses that exceed a pre-set amplitude.

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patent: 3844174 (1974-10-01), Chabre
patent: 3854323 (1974-12-01), Hearn et al.
patent: 3989965 (1976-11-01), Smith et al.
patent: 4016766 (1977-04-01), Morris
patent: 4065960 (1978-01-01), Grabendorfer
patent: 4131815 (1978-12-01), Boatright

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