Patent EA-005228-B1 (EA)
Title: A method of processing seismic data
Inventor: LEANEY SCOTT WALTER
IPC: G01V1/30
Filed: 2001-07-26
Abstract: 1. A method of processing seismic data, the method comprising using vertical seismic profile (VSP) seismic data to determine a model of the velocity of seismic energy for one or more P-waves, using said model of the velocity of seismic energy for processing seismic data. 2. A method as claimed in claim 1, the method comprising using VSP seismic data to determine a model of the velocity of seismic energy comprising extension of the vertical seismic profile from a dipole sonic log through bottom deposits. 3. A method as claimed in claim 2 wherein the extension of the vertical seismic profile is performed using at least one operation selected from the group of a compaction trend velocity, regional check-shot information or surface seismic Dix velocities for seismic waves. 4. A method as claimed in claim 1 comprising the further calibrating the model of the velocity of seismic energy for P-waves using VSP seismic data. 5. A method as claimed in claim 4 comprising using VSP seismic data for determining a model of the velocity of seismic energy for one or more S-waves. 6. A method as claimed in claim 1 comprising using VSP seismic data for determining a model of the velocity of seismic energy for one or more S-waves. 7. A method as claimed in claim 5 comprising the further calibrating the model of the velocity of seismic energy for S-waves using VSP seismic data. 8. A method as claimed in claim 5 comprising the further calibrating the model of the velocity of seismic energy for S-waves using VSP seismic data. 9. A method as claimed in claim 7 comprising the further calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves using either the surface seismic data or the Ocean Bottom Cable (OBC) seismic data. 10. A method as claimed in claim 8 comprising the further calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves using either the surface seismic data or the OBC seismic data. 11. A method as claimed in claim 1 wherein the velocity model of seismic energy is an anisotropic velocity model. 12. A method as claimed in claim 6 wherein the velocity model of seismic energy is an anisotropic velocity model. 13. A method as claimed in claim 7 comprising the further calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves for the effects of inelastic attenuation of seismic energy. 14. A method as claimed in claim 1 wherein the velocity model of seismic energy is VTI velocity model. 15. A method as claimed in claim 6 wherein the velocity model of seismic energy is VTI velocity model. 16. A method as claimed in claim 1 wherein the velocity model of seismic energy is a one-dimensional velocity model. 17. A method as claimed in claim 6 wherein the velocity model of seismic energy is a one-dimensional velocity model. 18. A method as claimed in claim 6 wherein the velocity model of seismic energy is multicomponent seismic data. 19. A method of processing seismic data, the method comprising using vertical seismic profile (VSP) seismic data to determine a model of the velocity of seismic energy for one or more P-waves, and a model of the velocity of seismic energy for one or more P-waves, calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves using VSP seismic data. using said model of the velocity of seismic energy for processing seismic data. 20. A method as claimed in claim 19 wherein the further calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves using surface seismic data. 21. A method as claimed in claim 19 wherein the further calibrating the model of the velocity of seismic energy for at least one of S-waves or P-waves using the OBC seismic data.