Method and apparatus for measuring seismic parameters of a seismic vibrator
AssigneeShell Oil Company
InventorsRobert Martindale Lupton, William Eric Westwood
Life of this patent
Estimating the term…
Abstract
Apparatus and techniques for measuring seismic parameters, such as ground force, of a seismic vibrator used for generating seismic signals through a geological formation are provided. The seismic vibrator has a base plate positionable adjacent a ground surface of the geological formation. A sensor pad may be provided with an optical cable positionable between the base plate of the seismic vibrator and the ground surface of the geological formation, a laser for passing a light through the optical cable, and a detector for detecting disturbances in the laser light whereby a ground force applied to the ground surface may be determined.
Claims10
A sensor pad for measuring seismic parameters of a seismic vibrator, the seismic vibrator for generating seismic waves through a geological formation, the seismic vibrator having a base plate positionable adjacent a ground surface of the geological formation, the sensor pad comprising:
- an optical cable positionable between the base plate of the seismic vibrator and the ground surface of the geological formation;
- a laser for passing a light through the optical cable;
- and
- a detector for detecting disturbances in the light whereby a ground force of the seismic vibrator may be determined.
A method for measuring seismic parameters, comprising:
- positioning a seismic pad on a base plate of a seismic vibrator, the seismic pad comprising an optical cable, a laser, and a detector;
- positioning the seismic pad of the base plate adjacent a ground surface of a geological formation;
- generating seismic waves through the geological formation with the seismic vibrator;
- passing a light from the laser through the optical cable;
- and
- determining a ground force of the seismic vibrator by detecting disturbances in the light.
Dependencies are inferred from the claim text.