Apparatus and method for noninvasive particle detection using doppler spectroscopy
Abstract
An apparatus and method for noninvasively detecting the presence of solid particulate matter suspended in a fluid flowing through a pipe or an oil and gas wellbore are described. Fluid flowing through a conduit containing the particulate solids is exposed to a fixed frequency (>1 MHz) of ultrasonic vibrations from a transducer attached to the outside of the pipe. The returning Doppler frequency shifted signal derived from the scattering of sound from the moving solid particles is detected by an adjacent transducer. The transmitted signal and the Doppler signal are combined to provide sensitive particulate detection. The magnitude of the signal and the Doppler frequency shift are used to determine the particle size distribution and the velocity of the particles. Measurement of the phase shift between the applied frequency and the detected Doppler shifted may be used to determine the direction of motion of the particles.
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1255138
- Patent Number(s):
- 9,354,094
- Application Number:
- 13/225,750
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2011 Sep 06
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Sinha, Dipen N. Apparatus and method for noninvasive particle detection using doppler spectroscopy. United States: N. p., 2016.
Web.
Sinha, Dipen N. Apparatus and method for noninvasive particle detection using doppler spectroscopy. United States.
Sinha, Dipen N. Tue .
"Apparatus and method for noninvasive particle detection using doppler spectroscopy". United States. https://www.osti.gov/servlets/purl/1255138.
@article{osti_1255138,
title = {Apparatus and method for noninvasive particle detection using doppler spectroscopy},
author = {Sinha, Dipen N.},
abstractNote = {An apparatus and method for noninvasively detecting the presence of solid particulate matter suspended in a fluid flowing through a pipe or an oil and gas wellbore are described. Fluid flowing through a conduit containing the particulate solids is exposed to a fixed frequency (>1 MHz) of ultrasonic vibrations from a transducer attached to the outside of the pipe. The returning Doppler frequency shifted signal derived from the scattering of sound from the moving solid particles is detected by an adjacent transducer. The transmitted signal and the Doppler signal are combined to provide sensitive particulate detection. The magnitude of the signal and the Doppler frequency shift are used to determine the particle size distribution and the velocity of the particles. Measurement of the phase shift between the applied frequency and the detected Doppler shifted may be used to determine the direction of motion of the particles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {5}
}