Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Reexamination Certificate
2007-01-11
2010-02-09
Lobo, Ian J (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
C181S105000
Reexamination Certificate
active
07660197
ABSTRACT:
An apparatus for evaluating a tubular in a borehole of includes at least two electromagnetic acoustic transducers. The transducers are configured to generate and receive first and second acoustic waves in the tubular. A difference in velocity of the two acoustic waves is indicative of a stress field in the tubular.
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Baker Hughes Incorporated
Lobo Ian J
Madan & Sriram, P.C.
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