Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2011-06-07
2011-06-07
Schechter, Andrew (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C702S006000, C702S179000, C702S181000
Reexamination Certificate
active
07957905
ABSTRACT:
A method for estimating interval travel time of an Earth formation using an acoustic well logging instrument having a plurality of spaced apart acoustic transmitters and acoustic receivers includes measuring travel time between a transmitter and a receiver for substantially all possible combinations of each of the plurality of transmitters and each of the plurality of receivers. Each of the possible combinations includes a common depth interval of the Earth formations. The method then include determining at least one statistical measure of center of the measured travel times.
REFERENCES:
patent: 5638269 (1997-06-01), Fournier et al.
patent: 5831934 (1998-11-01), Gill et al.
patent: 6058074 (2000-05-01), Swan et al.
Apache Corporation
Fagin Richard A.
Huynh Phuong
Schechter Andrew
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