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Migration Deconvolution Applied to Pemex Marine Seismic Data

Migration Deconvolution Applied to Pemex Marine Seismic Data. Guoan Luo and Sergio Ch a vez-Perez * * Mexican Petroleum Institute (IMP). Feb 3, 2006. Outline. Objectives Migration Deconvolution PEMEX Data Ongoing and Future Work. Outline. Objectives Migration Deconvolution PEMEX Data

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Migration Deconvolution Applied to Pemex Marine Seismic Data

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  1. Migration Deconvolution Applied to Pemex Marine Seismic Data Guoan Luo and Sergio Chavez-Perez* *Mexican Petroleum Institute (IMP) Feb 3, 2006

  2. Outline • Objectives • Migration Deconvolution • PEMEX Data • Ongoing and Future Work

  3. Outline • Objectives • Migration Deconvolution • PEMEX Data • Ongoing and Future Work

  4. Objectives • Apply MD to a rather complex marine data set • Speed MD up and make it a practical imaging tool

  5. Outline • Objectives • Migration Deconvolution • PEMEX Data • Ongoing and Future Work

  6. Reflectivity T T m L L L L m T = = L d Modeling d=Lm Migration Migration image mig Migration Green’s Function = Г

  7. -1 [ ] T T T T T m L L L L L L L L L L -1 -1 [ [ ] ] = m Migration deconvolution mig m = m mig Deblurring Operator -1 [ ] -1 = Г

  8. Outline • Objectives • Migration Deconvolution • PEMEX Data • Ongoing and Future Work

  9. N 5 km Location Map KAMBUL -1 TUNICH-101 m TABAY-1 0 0 0 1 KANTAAN-1 KAYAB-1 CHACMOOL-1 MOAN-1 CEEH-1 ZAZIL HA-1 MALOOB-101 BOTS-1 YAXILTUN-1 . KU-405 m SAM-1 0 . 0 m 5 . IB-102 0 LUM-1 m 0 4 ZAAP-1 0 . m 0 3 0 0 2 BACAB-1 EK BALAM-DL3 POK-1 EK-101 BALAM-1 AKAL-2001 AKAL-1 NIX-1 C-2011 TAKIN-1 KUKULKAN-1 TAKIN-101 LOC. HALACH-1 . m 0 0 1 PECH-1 . m 0 8 Campeche Bay Area . m 0 6 LOC. MANAB-1 . m 0 4 Mitra et al (2005) LOC. PETEN-1 LOC.-LAKIN-1 CD. DEL CARMEN . m 0 2 NUEVO CAMPECHITO TERMINOS LAGUNE FRONTERA Modified from Rojas et al

  10. Structural EvolutionMitra et al (2005)

  11. Migrated Section (inline 200) X (km) 25 0 0 Time (s) 3.6

  12. Migrated Section (inline 400) X (km) 25 0 0 Time (s) 3.6

  13. Migrated Section (crossline 400) Y (km) 20 0 0 Time (s) 3.6

  14. Migrated Section (crossline 600) Y (km) 20 0 0 Time (s) 3.6

  15. Outline • Objectives • Migration Deconvolution • PEMEX Data • Ongoing and Future Work

  16. 100mX100m Reference Point 25mX25m 801 Y X 1001 1250 T Data Cube Grid

  17. Migration vs MD Time slice at 1200 ms 0 X (km) 25 0 X (km) 25 0 Y (km) 20 MIG MD

  18. Migration vs MD Time slice at 1600 ms 0 X (km) 25 0 X (km) 25 0 Y (km) 20 MIG MD

  19. Migration vs MD Time slice at 2400 ms 0 X (km) 25 0 X (km) 25 0 Y (km) 20 MIG MD

  20. Migration vs MD X (km) X (km) 0 25 0 25 0 Time (s) 3.6 MIG MD Inline 200

  21. Migration vs MD X (km) X (km) 0 25 0 25 0 Time (s) 3.6 MIG MD Inline 400

  22. Migration vs MD Y (km) Y (km) 0 20 0 20 0 Time (s) 3.6 MIG MD Crossline 400

  23. Migration vs MD Y (km) Y (km) 0 20 0 20 0 Time (s) 3.6 MIG MD Crossline 600

  24. Migration vs MD Y (km) Y (km) 0 20 0 20 0 Time (s) 3.6 MIG MD Crossline 200

  25. Migration vs MD Y (km) Y (km) 0 20 0 20 0 Time (s) 3.6 MIG MD Crossline 800

  26. Ongoing Work Initial 3D Poststack MD tests show • Improved spatial resolution in time slices • Improved structural definition in area of interest

  27. Future Work • 3D Prestack MD tests • Improve MD performance for complex velocity models • Make it a more practical imaging tool

  28. PEMEX (Petróleos Mexicanos) Acknowledgements 2005 UTAM Sponsors

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