Vibratory seismic source for generating combined compressional a

Details Vibratory seismic source for generating combined compressional a Vibratory seismic source for generating combined compressional a

1986-02-18

1987-04-07

Jordan, Charles T.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181114, 181119, 181121, 367189, G01V 102

Patent

active

046553142

ABSTRACT:
A vibratory seismic surface source includes a hydraulic vibrator the energy of which is coupled into the earth through a ground contacting base plate. The vibrator is supported above and independently of the base plate so that it may be pivoted about a first rotational axis within a truck-mounted gimbal-type frame which itself is tiltable about a second horizontal rotational axis perpendicular to the first. After the vibratory axis is oriented in the desired direction the vibrator is lowered so as to contact a suitably contoured upper surface of the base plate. Inclination of the vibrator is accomplished by "push-pull" operation of pairs of oppositely-directed hydraulic cylinders.

REFERENCES:
patent: 4059820 (1977-11-01), Turpening
patent: 4316521 (1982-02-01), Chelminski
patent: 4321981 (1982-03-01), Waters
patent: 4354572 (1982-10-01), Martin
patent: 4390077 (1983-06-01), Fulkerson
patent: 4421198 (1983-12-01), Miller

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