Vibratory seismic source for generating combined compressional and shear waves
An apparatus is described for imparting combined compressional and shear wave seismic vibratory signals to the earth comprising: an earth-contacting base plate for coupling vibrational energy into the earth; vibrator means for producing reciprocal vibrations along a vibratory axis oriented in a predetermined direction, the vibrator means being supported above and independently of the base plate, in spaced relation thereto; means for bringing the vibrator means into a position of contact with the base plate; and control means for activation of the vibrator means in the position of contact with the base plate, whereby vibrations in the predetermined direction are transferred to the base plate or injection into the earth.
- Assignee:
- Atlantic Richfield Co., Los Angeles, CA
- Patent Number(s):
- US 4660675
- OSTI ID:
- 6776885
- Country of Publication:
- United States
- Language:
- English
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COMPRESSION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
ORIENTATION
PETROLEUM DEPOSITS
POSITIONING
RESOURCES
SEISMIC S WAVES
SEISMIC SOURCES
SEISMIC SURVEYS
SEISMIC WAVES
SIGNALS
SPACE DEPENDENCE
SUPPORTS
SURVEYS
WAVE PROPAGATION