Shear wave transducer for stress measurements in boreholes
Patent
·
OSTI ID:7063202
A method is described for determining stress around a borehole, comprising: generating a radially polarized shear wave in the borehole at two positions spaced apart by 90/sup 0/; transmitting the radially polarized shear waves in a direction along the borehole; measuring the velocity of the radially polarized shear waves; generating a tangentially polarized shear wave in the borehole at two positions spaced apart by 90/sup 0/; transmitting the tangentially polarized shear waves in a direction along the borehole; measuring the velocity of the tangentially polarized shear waves; calculating the stress induced shear wave velocity anisotropy from the measured velocities; and calculating the stress from the shear wave velocity anisotropy according to a predetermined relationship.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4641520
- OSTI ID:
- 7063202
- Country of Publication:
- United States
- Language:
- English
Similar Records
Shear wave transducer for stress measurements in boreholes
Shear wave transducer for boreholes
Acoustic wave propagation in a fluid-filled borehole surrounded by a formation with stress-relief-induced anisotropy
Patent
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:866134
Shear wave transducer for boreholes
Patent
·
Thu Aug 23 00:00:00 EDT 1984
·
OSTI ID:5844348
Acoustic wave propagation in a fluid-filled borehole surrounded by a formation with stress-relief-induced anisotropy
Journal Article
·
Wed Sep 01 00:00:00 EDT 1993
· Geophysics; (United States)
·
OSTI ID:5589516
Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580203 -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
ANISOTROPY
BOREHOLES
CALCULATION METHODS
CAVITIES
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
INCIDENCE ANGLE
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PHASE VELOCITY
POLARIZATION
POSITIONING
RESOURCES
SEISMIC S WAVES
SEISMIC SURVEYS
SEISMIC WAVES
SPACE DEPENDENCE
STRESSES
SURVEYS
TRANSDUCERS
VELOCITY
WAVE PROPAGATION
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580203 -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
ANISOTROPY
BOREHOLES
CALCULATION METHODS
CAVITIES
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
INCIDENCE ANGLE
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PHASE VELOCITY
POLARIZATION
POSITIONING
RESOURCES
SEISMIC S WAVES
SEISMIC SURVEYS
SEISMIC WAVES
SPACE DEPENDENCE
STRESSES
SURVEYS
TRANSDUCERS
VELOCITY
WAVE PROPAGATION