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Title: Down hole periodic seismic generator

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.
 [1] ;  [2] ;  [1]
  1. (Albuquerque, NM)
  2. (Las Cruces, NM)
Publication Date:
OSTI Identifier:
Report Number(s):
US 4805727
DOE Contract Number:
Resource Type:
Research Org:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
Country of Publication:
United States
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