Method of seismic vibratory limits control at low frequencies
AssigneeInova Ltd.
InventorsThomas Phillips, Zhouhong Wei, Ruru Chen
Life of this patent
Estimating the term…
Abstract
A method of performing a seismic sweep determining a user-defined force at a frequency using user defined inputs; determining a maximum force at the frequency using sweep parameters; and using the maximum force to drive a seismic source if the user-defined force is greater than the maximum force.
Claims12
A method of performing a seismic sweep, comprising:
- determining a maximum force of a seismic source at each frequency of the seismic sweep signal using sweep parameters derived from a user-defined seismic sweep signal;
- comparing a force associated with the user-defined seismic sweep signal with the determined maximum force at each of the plurality of frequencies;
- driving the seismic source according to the determined maximum force if the force of the user-defined seismic sweep signal is greater than the determined maximum force;
- and
- driving the seismic source according to the user-defined seismic sweep signal if the determined maximum force is greater than the force of the user-defined seismic sweep signal.
A system for performing a seismic sweep in an earth formation using a user-defined seismic sweep signal over a plurality of frequencies using user defined vibrator control inputs, comprising:
- a seismic source comprising at least one processor, wherein the at least one processor is configured to:
- determine a maximum force of the seismic source at each frequency of the seismic sweep signal using sweep parameters derived from a user-defined seismic sweep signal;
- compare a force associated with the user-defined seismic sweep signal with the determined maximum force at each of the plurality of frequencies;
- drive the seismic source according to the determined maximum force if the force of the user-defined seismic sweep signal is greater than the determined maximum force;
- and
- drive the seismic source according to the user-defined seismic sweep signal if the determined maximum force is greater than the force of the user-defined seismic sweep signal.
A non-transitory machine-readable medium product with instructions thereon, that when executed by at least one processor, causes the processor to perform a method for performing a seismic sweep in an earth formation, comprising:
- determining a maximum force of a seismic source at each frequency of the seismic sweep signal using sweep parameters derived from a user-defined seismic sweep signal;
- comparing a force associated with the user-defined seismic sweep signal with the determined maximum force at each of the plurality of frequencies;
- and
- determining a signal for driving the seismic source according to the seismic sweep signal in dependence upon the comparison.
Dependencies are inferred from the claim text.