Attenuating sea-surface ghost wave effects in seismic data
AssigneeWesternGeco L.L.C.
InventorRalf Ferber
Life of this patent
Estimating the term…
Abstract
A method for processing seismic data. The method includes receiving the seismic data acquired by at least two receivers that are disposed at different depths. The method may then time-align the seismic data, collect a portion of the time-aligned seismic data into a gather and sum the collected time-aligned seismic data in the gather. After summing the collected time-aligned seismic data in the gather, the method may widen a spectrum of the summed seismic data and generate an image of subsurface formations in the earth based on the widened spectrum.
Claims20
A method for processing seismic data, comprising:
- receiving the seismic data acquired by at least two receivers that are disposed on different streamers at different depths;
- time-aligning the seismic data;
- collecting, using a processor, a portion of the time-aligned seismic data into a gather;
- summing the collected time-aligned seismic data in the gather;
- widening a spectrum of the sum;
- and
- generating an image of subsurface formations in the earth based on the widened spectrum.
A non-transitory computer-readable medium having stored thereon computer-executable instructions which, when executed by a computer, cause the computer to:
- receive seismic data acquired by at least two receivers that are disposed on different streamers at different depths;
- time-align the seismic data;
- collect a portion of the time-aligned seismic data into a gather;
- sum the collected time-aligned seismic data in the gather;
- widen a spectrum of the sum;
- and
- generate an image of subsurface formations in the earth based on the widened spectrum.
A computer system, comprising:
- a processor;
- and
- a memory comprising program instructions executable by the processor to:
- receive seismic data acquired by at least two receivers that are disposed on different streamers at different depths;
- time-align the seismic data;
- collect a portion of the time-aligned seismic data into a gather;
- sum the collected time-aligned seismic data in the gather;
- widen a spectrum of the sum;
- and
- generate an image of subsurface formations in the earth based on the widened spectrum.
Dependencies are inferred from the claim text.