Acoustics – Geophysical or subsurface exploration
Patent
1986-06-16
1989-07-25
Jordan, Charles T.
Acoustics
Geophysical or subsurface exploration
181102, 181106, 181113, 367912, 310334, G01V 100
Patent
active
048504491
ABSTRACT:
A vibrator and method for transmitting seismic signals into the earth to obtain data on various subsurface characteristics. The vibrator is driven with piezoelectric transducers which can operate below 500 Hz, and can produce better signal resolution at higher frequencies than is possible with hydraulic vibrators. The piezoelectric vibrators can be used in various embodiments at the earth's surface, within a borehole, or while permanently buried in the earth.
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"Downhole Periodic Seismic Sources", by H. C. Hardee, Geophysical Prospecting, 31: 57-71, 1983.
"High Frequency Seismic Source", Brochure issued by Southwest Research Institute, San Antonio, Texas, Publication date unknown.
Eldred John W.
Evans Larry W.
Jordan Charles T.
Keller Raymond F.
The Standard Oil Company
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