Fluid driven torsional dipole seismic source

Patent · 31 December 1990

OSTI ID:867667

Hardee, Harry C ^[1]

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1. Albuquerque, NM

A compressible fluid powered oscillating downhole seismic source device capable of periodically generating uncontaminated horizontally-propagated, shear waves is provided. A compressible fluid generated oscillation is created within the device which imparts an oscillation to a housing when the device is installed in a housing such as the cylinder off an existing downhole tool, thereby a torsional seismic source is established. Horizontal waves are transferred to the surrounding bore hole medium through downhole clamping.

• Research Organization: AT & T CORP
• DOE Contract Number: AC04-76DP00789
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4982811
• OSTI ID: 867667
• Country of Publication: United States
• Language: English

Related Subjects

/181/367/
bore
capable
clamping
compressible
compressible fluid
created
cylinder
device
device capable
dipole
downhole
downhole tool
driven
established
existing
fluid
fluid drive
fluid driven
generated
generating
horizontal
horizontally-propagated
housing
imparts
installed
medium
oscillating
oscillation
periodically
powered
provided
seismic
seismic source
shear
shear wave
shear waves
source
source device
surrounding
tool
torsional
transferred
uncontaminated
waves