Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate
2008-04-01
2008-04-01
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
During drilling
Reexamination Certificate
active
07350410
ABSTRACT:
A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The survey tool further includes a first acceleration sensor mounted at a first position within the downhole portion. The first acceleration sensor is adapted to generate a first signal indicative of an acceleration of the first acceleration sensor along the axis. The survey tool further includes a second acceleration sensor mounted at a second position within the downhole portion. The second position is spaced from the first position by a non-zero distance along the axis. The second acceleration sensor is adapted to generate a second signal indicative of an acceleration of the second acceleration sensor along the axis. The survey tool further includes a controller adapted to receive the first signal and the second signal and to calculate a depth, a velocity, or both a depth and a velocity of the downhole portion in response to the first signal and the second signal.
REFERENCES:
patent: 3490149 (1970-01-01), Bowers
patent: 4537067 (1985-08-01), Sharp et al.
patent: 4545242 (1985-10-01), Chan
patent: 4909336 (1990-03-01), Brown et al.
patent: 4987684 (1991-01-01), Andreas et al.
patent: 5522260 (1996-06-01), Chappellat et al.
patent: 5585726 (1996-12-01), Chau
patent: 5657547 (1997-08-01), Uttecht et al.
patent: 5806195 (1998-09-01), Uttecht et al.
patent: 5812068 (1998-09-01), Wisler et al.
patent: 5821414 (1998-10-01), Noy et al.
patent: 5842149 (1998-11-01), Harrell et al.
patent: 6021377 (2000-02-01), Dubinsky et al.
patent: 6145378 (2000-11-01), McRobbie et al.
patent: 6173773 (2001-01-01), Almaguer et al.
patent: 6192748 (2001-02-01), Miller
patent: 6206108 (2001-03-01), MacDonald et al.
patent: 6315062 (2001-11-01), Alft et al.
patent: 6381858 (2002-05-01), Shirasaka
patent: 6453239 (2002-09-01), Shirasaka et al.
patent: 6484818 (2002-11-01), Alft et al.
patent: 6837332 (2005-01-01), Rodney
patent: 2002/0032529 (2002-03-01), Duhon
patent: 2002/0056201 (2002-05-01), Dallas et al.
patent: 2002/0112887 (2002-08-01), Harrison
patent: 0 646 696 (1999-05-01), None
patent: WO 02/103158 (2002-12-01), None
patent: PCT/US2004/021899 (2005-01-01), None
patent: PCT/US2005/002275 (2005-01-01), None
US 6,151,553, 11/2000, Estes et al. (withdrawn).
“±150°s Single Chip Yaw Rate Gyro with Signal Conditioning,”Analog Devices, ADXRS150, © 2003 Analog Devices, Inc.
“±300°s Single Chip Yaw Rate Gyro with Signal Conditioning,”Analog Devices, ADXRS300.
Geen, J., et al., “New iMEMS® Angular-Rate-Sensing Gyroscope,”Analog Dialogue, vol. 37, No. 3, 2003, pp. 1-4.
Teegarden, Darrell, et al., “How to Model and Simulate Microgyroscope Systems,”IEEE Spectrum, vol. 35, No. 7, Jul. 1998, pp. 66-75.
Yazdi, N., et al., “Micromachined Inertial Sensors,”Proc. of the IEEE, vol. 86, No. 8, Aug. 1998, pp. 1640-1659.
Ekseth Roger
Greensmith Martyn Ian
Bellamy Tamiko
Gyrodata, Inc.
Knobbe Martens Olson & Bear LLP
Williams Hezron
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