Scott Allen Grubb
Engineering at Fleming Rock Ln, Fulshear, TX
License number
Louisiana EI.0019059
Issued Date
Jun 15, 1999
Expiration Date
Sep 30, 2017
Category
Civil Engineer
Address
Address
5506 Fleming Rock Ln, Fulshear, TX 77441
Professional information
High Precision Ultrasonic Corrosion Rate Monitoring
US Patent:
2011006, Mar 24, 2011
Filed:
Sep 17, 2010
Appl. No.:
12/884869
Inventors:
Scott A. Grubb - Fulshear TX, US
David J. Blumer - Bartlesville OK, US
David J. Blumer - Bartlesville OK, US
Assignee:
CONOCOPHILLIPS COMPANY - Houston TX
International Classification:
G01N 29/04
US Classification:
73623
Abstract:
The invention relates to very precisely measuring changes in thickness of pipe walls to determine corrosion rate prior to any significant corrosion loss. The thickness is determined by ultrasonic testing where many measurements of the wall thickness are taken at the same spot by a fixed sensor and errors associated with noise and temperature changes are substantially eliminated. A highly sensitive receiver converts each reflected pulse to waves that are averaged with other pulse measurements. The resulting average wave is analyzed so that each waveform is analyzed to identify the extrema and inflection points of each reflected pulse. The resulting analysis provides a far more accurate determination of the time between reflected pulses. As a result, a far more accurate picture of corrosion at the location of the wall of the pipe can be determined within weeks with a high degree of confidence.