Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1982-01-07
1990-03-13
Tarcza, Thomas H.
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
367189, G01V 104, H04R 1100
Patent
active
049076701
ABSTRACT:
In a method of seismic exploration using swept-frequency signals, compressional and shear waves are emitted simultaneously. Typically the waves are generated by swinging-weight vibrators acting through a single baseplate. If the frequency of the shear vibration is one-half that of the comopressional vibration, the downward vertical forces can be phased to minimize the horizontal slippage of the baseplate. The sensitive axis of the geophones is inclined to the vertical for detecting both compressional waves and shear waves. For defined ranges of sweep rate, separate compressional and shear records are obtained by cross-correlating the geophone signal separately against the vertical and horizontal emissions.
REFERENCES:
patent: 2354548 (1944-07-01), Ricker
patent: 3185250 (1965-05-01), Glazier
patent: 3224252 (1966-04-01), Burns
patent: 3378096 (1968-04-01), Cherry, Jr.
patent: 3886493 (1975-05-01), Farr
patent: 3956730 (1976-05-01), Barbier
patent: 4069470 (1978-01-01), Cunningham et al.
patent: 4300220 (1981-11-01), Goff et al.
patent: 4321981 (1982-03-01), Waters
"Reflection Seismology-a Tool for Energy Resource Exploration" 2nd Ed., Kenneth Waters, 1981, Appendix 3B and Chapter 12.1-2.
Issing Gregory C.
Kane, Jr. Daniel H.
Tarcza Thomas H.
LandOfFree
Seismic exploration using compressional and shear waves simultan does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seismic exploration using compressional and shear waves simultan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic exploration using compressional and shear waves simultan will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-45875