1. 1 LEAST SQUARES DATUMING Yanwei Xue Sep. 18, 2009

2. 2 OUTLINE  Theory  VSP->SWP. oOBS Data Example. oApplication on Target Oriented RTM.  VSP surface related multiples->SSP. oFlat 3 layer model example. oSEG/EAGE model Example.

3. 3 Two state model

4. 4 State 1State 2

5. 5 State 1State 2

6. 6 OUTLINE  Theory  VSP->SWP. oOBS Data Example. oApplication on Target Oriented RTM.  VSP surface related multiples->SSP. oFlat 3 layer model example. oSEG/EAGE model Example.

7. 7

8. 8 Input VSP Data G’s Function

9. 9 S.I.D. Real

10. 10 L.S.D. Real

11. 11 OUTLINE  Theory  VSP->SWP. oOBS Data Example. oApplication on Target Oriented RTM.  VSP surface related multiples->SSP. oFlat 3 layer model example. oSEG/EAGE model Example.

12. 12 VSPSRM->SSP

13. 13 VSPSRM->SSP

14. 14

15. 15 Down-going waves (receiver side) Up-going waves (receiver side)

16. 16 Down-going waves S.I.D Up-going waves S.I.D

17. 17 Down-going waves L.S.D Up-going waves L.S.D

18. 18 Real SSP

19. 19 OUTLINE  Theory  VSP->SWP. oOBS Data Example. oApplication on Target Oriented RTM.  VSP surface related multiples->SSP. oFlat 3 layer model example. oSEG/EAGE model Example.

20. 20

21. 21 Down-going waves (receiver side) Up-going waves (receiver side)

22. 22 Down-going waves S.I.D Up-going waves S.I.D

23. 23 Down-going waves L.S.D Up-going waves L.S.D

24. 24 Real SSP