Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2005-10-25
2005-10-25
Walker, Zakiya (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C175S048000, C367S025000, C367S032000
Reexamination Certificate
active
06957700
ABSTRACT:
Tools and methods are provided that determine the acoustic impedance of drilling fluid using reflections from a precise metal disk. Because the reverberation characteristics of an acoustic wave depend in part on the acoustic wave shape, the first reflection from the metal disk may be used to calibrate the measurement. A method for determining a borehole fluid property includes (i) generating an acoustic signal within a borehole fluid, (ii) receiving reflections of the acoustic signal from the fluid, and (iii) analyzing a reverberation portion of the acoustic signal to determine the property. The analyzing of the reverberation portion may include obtaining a theoretical reverberation signal and relating the measured reverberation signal with the theoretical reverberation signal to determine the borehole fluid property.
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Search Report—02 10 116 French Patent Application Search Report Dated Mar. 23, 2004 (2 p.).
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Walker Zakiya
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