Down hole periodic seismic generator

Details Down hole periodic seismic generator Down hole periodic seismic generator

1982-10-28

1989-02-21

Tarcza, Thomas H.

Acoustics

Geophysical or subsurface exploration

Well logging

G01V 140

Patent

active

048057274

ABSTRACT:
A down hole periodic seismic generator system for transmitting variable frequency, predominantly shear-wave vibration into earth strata surrounding a borehole. The system comprises a unitary housing operably connected to a well head by support and electrical cabling and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a variable speed pneumatic oscillator and a self-contained pneumatic reservoir for producing a frequency-swept seismic output over a discrete frequency range.

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Waters, "Reflection Seismology", John Wiley Publication, New York, (1978), pp. 78-83.

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