Down hole periodic seismic generator
Patent
·
OSTI ID:6162067
A down hole periodic seismic generator system is described 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.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4805727
- OSTI ID:
- 6162067
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLES
CAVITIES
ELECTRONIC EQUIPMENT
EQUIPMENT
GEOPHYSICAL SURVEYS
MOTORS
OSCILLATORS
PNEUMATIC MOTORS
SEISMIC S WAVES
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS
WELLHEADS
020200* -- Petroleum-- Reserves
Geology
& Exploration
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLES
CAVITIES
ELECTRONIC EQUIPMENT
EQUIPMENT
GEOPHYSICAL SURVEYS
MOTORS
OSCILLATORS
PNEUMATIC MOTORS
SEISMIC S WAVES
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS
WELLHEADS