Measuring and testing – Borehole or drilling – Formation logging
Reexamination Certificate
2005-10-25
2005-10-25
Raevis, Robert (Department: 2856)
Measuring and testing
Borehole or drilling
Formation logging
Reexamination Certificate
active
06957572
ABSTRACT:
A method for determining mud slowness of a mud in a borehole includes determining slowness as a function of frequency for at least one fluid mode from a set of measurements acquired with a sonic tool in the borehole; and determining the mud slowness from the slowness as a function of frequency for the at least one fluid mode. A downhole sonic tool includes a transmitter capable of generating signals covering a frequency range, a high end of which is more than 30 KHz; and a receiver array comprising a plurality of receivers, which are responsive to the frequency range of the transmitter, wherein the transmitter and the receiver array are spaced apart on a tool body at a selected TR spacing.
REFERENCES:
patent: 4131875 (1978-12-01), Ingram
patent: 4594691 (1986-06-01), Kimball et al.
patent: 4606014 (1986-08-01), Winbow et al.
patent: 4633449 (1986-12-01), Ingram et al.
patent: 4698793 (1987-10-01), Wu
patent: 4779236 (1988-10-01), Sondergeld
patent: 4791619 (1988-12-01), Liu
patent: 4797859 (1989-01-01), Hornby
patent: 4809236 (1989-02-01), Hsu et al.
patent: 4813028 (1989-03-01), Liu
patent: 5036945 (1991-08-01), Hoyle et al.
patent: 5265067 (1993-11-01), Chang
patent: 5278805 (1994-01-01), Kimball
patent: 5587966 (1996-12-01), Kimball et al.
patent: 5687138 (1997-11-01), Kimball et al.
patent: 5999484 (1999-12-01), Kimball et al.
patent: 6327538 (2001-12-01), Chin
patent: 6449560 (2002-09-01), Kimball
patent: 6459993 (2002-10-01), Valero et al.
patent: 6552962 (2003-04-01), Varsamis et al.
patent: 6631327 (2003-10-01), Hsu et al.
patent: 6654688 (2003-11-01), Brie et al.
patent: 2003/0185100 (2003-10-01), Dangelo et al.
patent: 2004/0001389 (2004-01-01), Tang
patent: 2004/0006428 (2004-01-01), Hsu et al.
Echols Brigitte L.
Gaudier Dale
Schlumberger Technology Corporation
Segura Victor H.
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