G - Physics – 01 – F
Patent
G - Physics
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G01F 1/74 (2006.01) E21B 47/10 (2006.01) G01F 1/30 (2006.01) G01N 15/06 (2006.01) G01N 29/04 (2006.01) G01N 29/34 (2006.01)
Patent
CA 2122826
2122826 9309405 PCTABS00022 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 (10) having a metal probe (12) interposed in a flow conduit for transmitting acoustic emissions created by particles impacting the probe to a sensor (32) and signal processing circuit (38, 40, 42, 44) 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.
Beattie Alan G.
Bohon W. Mark
de Kock Elbie R.
Sandia Corporation
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