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Title: Down hole periodic seismic generator

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.

Inventors:
 [1];  [2];  [1]
  1. Albuquerque, NM
  2. Las Cruces, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
866847
Patent Number(s):
4805727
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /181/

Citation Formats

Hardee, Harry C, Hills, Richard G, and Striker, Richard P. Down hole periodic seismic generator. United States: N. p., 1989. Web.
Hardee, Harry C, Hills, Richard G, & Striker, Richard P. Down hole periodic seismic generator. United States.
Hardee, Harry C, Hills, Richard G, and Striker, Richard P. Sun . "Down hole periodic seismic generator". United States. https://www.osti.gov/servlets/purl/866847.
@article{osti_866847,
title = {Down hole periodic seismic generator},
author = {Hardee, Harry C and Hills, Richard G and Striker, Richard P},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}