Down hole periodic seismic generator

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:866847

Hardee, Harry C ^[1]; Hills, Richard G ^[2]; Striker, Richard P ^[1]

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1. Albuquerque, NM
2. Las Cruces, NM

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.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-76
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4805727
• OSTI ID: 866847
• Country of Publication: United States
• Language: English

Related Subjects

periodic
seismic
generator
transmitting
variable
frequency
predominantly
shear-wave
vibration
earth
strata
surrounding
borehole
comprises
unitary
housing
operably
connected
head
support
electrical
cabling
contains
clamping
apparatus
selectively
walls
speed
pneumatic
oscillator
self-contained
reservoir
producing
frequency-swept
output
discrete
range
seismic generator
unitary housing
variable frequency
frequency range
operably connected
variable speed
selectively clamping
strata surrounding
clamping apparatus
periodic seismic
shear-wave vibration
contains clamping
earth strata
discrete frequency
electrical cabling
housing operably
transmitting variable
predominantly shear-wave
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