Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2007-08-14
2007-08-14
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C340S854400
Reexamination Certificate
active
10488160
ABSTRACT:
A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveform received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing.
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Asvadurov Sergey
Hsu Chaur-Jian
Pabon Jahir A.
Sinha Bikash K.
Barlow John
Batzer William B.
Destefanis Jody Lynn
Le Toan M.
Loccisano Vincent P.
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