Acoustic sand detector for fluid flowstreams

Details Acoustic sand detector for fluid flowstreams Acoustic sand detector for fluid flowstreams

1991-11-05

1993-11-02

Goldstein, Herbert

Measuring and testing

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

Content or effect of a constituent of a liquid mixture

7386104, 7386121, 7386173, G01F 128, G01N 1507

Patent

active

052575306

ABSTRACT:
The particle volume and particle mass production rate of particulate solids entrained in fluid flowstreams such as formation sand or fracture proppant entrained in oil and gas production flowstreams is determined by a system having a metal probe interposed in a flow conduit for transmitting acoustic emissions created by particles impacting the probe to a sensor and signal processing circuit which produces discrete signals related to the impact of each of the particles striking the probe. The volume or mass flow rate of particulates is determined from making an initial particle size distribution and particle energy distribution and comparing the initial energy distribution and/or the initial size distribution with values related to the impact energies of a predetermined number of recorded impacts. The comparison is also used to recalibrate the system to compensate for changes in flow velocity.

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patent: 4674337 (1987-06-01), Jonas
Folkestad et al., "Acoustic measurements detect sand in North Sea flow lines" in Oil & Gas Journal, Aug. 27, 1990.
Stuivenwold et al., "Instrumentation for managing sand problem prone fields in society of petroleum", Engineers of AIME, Sep. 1980.

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