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US 7,804,740 B2Granted
Processing seismic data using interferometry techniques
AssigneeWesternGeco L.L.C.
InventorsRalf Ferber, Christophe Zaroli
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Abstract
Method for processing seismic data. In one implementation, the method includes converting a common midpoint (CMP) gather of seismograms into one or more interferogram common midpoint (ICMP) gathers, generating a semblance spectrum for each ICMP gather, stacking the semblance spectrum from each ICMP gather to generate a combined semblance spectrum and deriving a normal moveout (NMO) velocity profile from the combined semblance spectrum.
Claims10
A method for processing seismic data, comprising:
- deriving a normal moveout (NMO) velocity profile;
- converting a common midpoint (CMP) gather of seismograms into one or more interferogram common midpoint (ICMP) gathers;
- correcting the ICMP gathers using the NMO velocity profile;
- and
- stacking the NMO corrected ICMP gathers.
2 more elements
A computer system for geophysical exploration, comprising:
- a processor;
- and
- a memory, wherein the memory comprising program instructions executable by the processor to:
- derive a normal moveout (NMO) velocity profile;
- convert a common midpoint (CMP) gather of seismograms into one or more interferogram common midpoint (ICMP) gathers;
- correct the ICMP gathers using the NMO velocity profile;
- and
- stack the NMO corrected ICMP gathers.
5 more elements
Dependencies are inferred from the claim text.