System and method for using vehicle motion as a land seismic source
AssigneeCgg Services SAS
InventorJohn J. SALLAS
Life of this patent
Estimating the term…
Abstract
Method and source assembly for enhancing low-frequency seismic signals. The source assembly includes a vehicle configured to move to a desired location above ground; a lift and hydraulic actuator system attached to the vehicle and configured to generate seismic waves into the ground; auxiliary equipment attached to the vehicle; and one or more sensors located on the vehicle or the auxiliary equipment for measuring a vertical acceleration or a representation of the vertical acceleration of the source assembly.
Claims20
A source assembly for enhancing low-frequency seismic signals, the source assembly comprising:
- a vehicle configured to move to a desired location above ground;
- a lift and hydraulic actuator system attached to the vehicle and configured to generate seismic waves into the ground;
- auxiliary equipment attached to the vehicle;
- and
- one or more sensors located on the vehicle or the auxiliary equipment for measuring a vertical acceleration or a representation of the vertical acceleration of the source assembly.
A method for capturing a low-frequency energy generated by a source assembly, the method comprising:
- determining how many parts of the source assembly have a weight above a given threshold;
- locating on each part that has its weight above the given threshold one or more sensors for measuring a corresponding acceleration;
- connecting each of the one or more sensors to a controller;
- and
- configuring the controller to calculate a force Fc applied by the source assembly to the ground through its tires or tracks.
A method for enhancing a low-frequency energy generated by a source assembly, the method comprising:
- moving the source assembly from one shot point to another shot point;
- lowering or raising a baseplate of a lift and hydraulic actuator system at a given shot point;
- recording vertical displacements of the source assembly with one or more sensors while the source assembly moves from the one shot point to another shot point or while the baseplate is lowered or raised;
- processing the vertical displacements in a controller to determine a vertical force Fc applied by the source assembly to the ground;
- and
- using the vertical force Fc to process seismic data recorded with seismic sensors.
Dependencies are inferred from the claim text.