Inclinable vibratory seismic source
This patent describes vibratory apparatus for imparting seismic vibratory signals to the earth along a selected vector path, the apparatus being suitable for mounting on a vehicle frame for transportation. It comprises: a ground-engaging base plate; lift means including a lift frame connectable with the vehicle frame and the base plate whereby the base plate can be moved from a transport position out of engagement with the ground to an operating position engaging the ground; vibratory means for producing the vibratory signals. The vibratory means including a shaft having an axial centerline, a first end moveably mounted on the base plate whereby the axial centerline can be located within preselected angles and at preselected azimuths, a second end, a vibratory mass mounted for limited reciprocating movement on the shaft intermediate ends for imparting vibratory motion to the shaft and a substantially vibration free reaction mass moveably located on the shaft between the vibratory mass and the second end; and control means connecting the second end with the lift frame for positioning the axial centerline of the vibratory means at desired inclinations and at desired azimuths. The control means including variable length means, means for selectively and independently changing the length of each variable length means, and generating means for transmitting a signal to cause the variable length means to change length to position the vibratory means at a selected inclination and azimuth.
- Assignee:
- Atlantic Richfield Co., Los Angeles, CA
- Patent Number(s):
- US 4853907
- Application Number:
- PPN: US 7312129A
- OSTI ID:
- 5451860
- Country of Publication:
- United States
- Language:
- English
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CONTROL EQUIPMENT
DESIGN
EQUIPMENT
EXPLORATION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
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OSCILLATIONS
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