Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2006-12-14
2009-11-10
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S602000
Reexamination Certificate
active
07614302
ABSTRACT:
A method of analyzing acoustic data, that includes determining fluid sound speed through connate fluid. The method involves sampling the fluid, sending an acoustic signal into the fluid between a first and a second reflective interface. Data is recorded that represents acoustic signals over time as they are reflecting from the interfaces. A smoothed first derivative with respect to time of the cumulative sum of squares (CSS) of the filtered amplitude data is determined. This first derivative is cross correlated to the time-shifted versions of itself.
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Bergren Paul A.
DiFoggio Rocco
Han Jun
Baker Hughes Incorporated
Bracewell & Guiliani
Miller Rose M
Williams Hezron
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