1. 4. Spectral Decomposition
AASPI
Welcome and overview of AASPI accomplishments and software development
Kurt J. Marfurt
Attribute-Assisted Seismic Processing and Interpretation

2. AASPI 2011 Sponsors

3. AASPI 2011 Personnel Changes
Kui Zhang – (Ph.D. Geophysics) – to BGP
Yanxia Guo – (M.S. Geophysics) – to BGP
Amanda Thompson (M.S. Geophysics) – to Devon
Oz Elis (M.S. Geophysics - to TPAO
Ana Martins (M.S. Geophysics) – to Schlumberger
Alejandro Cabrales-Vargas (M.S. Geophysics) – to PEMEX
Supratik Sarkar (Ph.D. Geology) – to Shell
Sunday Amoyedo (Ph.D. Geophysics) – to TOTAL
Aliya Urazaminova (M.S. Geophysics) – to Anadarko
Evan Staples (M.S. Geophysics) – to ConocoPhillips
out
going
Brad Wallet – (Ph.D. – Geophysics) – to Schlumberger
Trey White (M.S. Geology)
Sumit Verma (Ph.D. Geophysics)
Alfredo Fernandez (M.S. Geophysics)
Melia da Silva (M.S. Geophysics)
Mark Aisenberg (M.S. Geophysics)
Daniel Trumbo (M.S. Geology) in

4. AASPI 2011 Software Development
75% of the port to multiplatform performance (Linux and Windows 7)
aaspi_io – C++ code to read/write files and command lines
GUIs – C++ graphical user interfaces
all higher level aaspi algorithms
Developed and released the following new algorithms
som2d – clustering of waveforms/stacking patterns at each trace
som3d – clustering of attribute vectors at each voxel
nmo_mp – non-stretch normal moveout using matching pursuit
sof_prestack – prestack structure-oriented filtering
azim_offset_mig – simple prestack Kirchhoff time migration
aaspi_util_prestack – GUIs and scripts to handle migrated data
Prototyped the following new algorithms
Constrained 3D least-squares prestack time migration (working)
cwt, cwt_inverse, and bandwidth extension (needs aaspi_io)
Phase residue mapping of unconformities (needs aaspi_io)
High resolution (factor component) velocity analysis
Improved the following existing algorithms
sof3d – near total restructuring
dip3d – simplified and streamlined Kuwahara window options
spec_cmp, sof3d – significantly improved spectral balancing

5. AASPI 2011 Workflow Development
Calibration of curvature anomalies with outcrop analogues and image logs (Evan Staples – Hunton Lime; Trey White – Mississippi Lime; Nabanita Gupta – Woodford Shale)
Correlation of core linked to seismic attributes via depositional environment models (Nabanita Gupta)
Prediction of sand production from time-lapse AVO analysis (Sunday Amoyedo)
Prediction of geomechanical properties and well-bore stability through attribute-generated structure models, well logs, and prestack impedance inversion and time-lapse seismic (Aliya Urazimanova and Sunday Amoyedo)
Integration of outcrop flow directions, seismic stratigraphy, λρ-μρ inversion, and production data to identify sweet spots, Chicontepec Bain (Supratik Sarkar)
Developed and perfected constrained least-squares constraints and data prediction capabilities (Alejandro Cabrales-Vargas, Shiguang Guo)

6. AASPI Software

7. geology.ou.edu/aaspi
documentation

9. overview
Flow chart

10. examples
references

11. Examples of some interdisciplinary work – G & G & Petroleum Engineering

12. Overlying seal strength – Forties Field, UK
4. Spectral Decomposition
Overlying seal strength – Forties Field, UK
Aliya Urazimanova addressed well bore stability problems in the Forties Field using seismic attributes, prestack inversion, and well measurements to build a geomechanical model.
(Urazaminova MS, 2011)

13. Unconfined Compressive Strength (UCS) (Aliya with Prof. Rogiers)
4. Spectral Decomposition .
Unconfined Compressive Strength (UCS) (Aliya with Prof. Rogiers)
Work by Aliya Urazaminova in conjunction with Prof. Jean Claude Rogiers of Petroleum Engineering correlating well instability to unconfined compressive strength. .
(Urazaminova MS, 2011)

14. Well instability: Low μρ Shallow-dipping faults
4. Spectral Decomposition
Well instability: Low μρ Shallow-dipping faults
Representative work by Aliya Urazaminova correlating well instability in Forties Field to weakness in the shale predicted by prestack impedance inversion and shallow-dipping faults
(Urazaminova MS, 2011)

15. Turbidite Depositional History
Outcrop Study
Section unavailable for measurement
Paleocene-Eocene boundary (Cossey et al- Personal communication)
Thin bed- distal levee
Channel fill
Removed rip up clasts
Proximal levee
Paleocurrent direction
Direction of slumps
Slump
Debris Flow
Fine grained sand
Medium/ Coarse grained sand
Conglomerate/ Shale clast conglomerate
Shale
(Sarkar PhD 2011)

16. Turbidite Depositional History
Outcrop Study
(Sarkar PhD 2011)

17. Turbidite Depositional History
Outcrop Study (Paleocurrent Pattern)
20 km
SMO
Golden Lane platform
Chicontepec subsurface production area
Amatitlan 3D
Tanlajas
Paleocene paleocurrent
(Sarkar PhD 2011)
Paleocene slumps

18. Turbidite Depositional History
Outcrop Study (Paleocurrent Pattern)
20 km
SMO
Golden Lane platform
Chicontepec subsurface production area
Amatitlan 3D
Tanlajas
Eocene paleocurrent directions
(Sarkar PhD 2011)

19. Turbidite Patterns Within Stratigraphic Units
Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
Unit A
Amalgamated channel
Channel/ Canyon fill
(Sarkar PhD 2011)

20. Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
Unit A N
(Sarkar PhD 2011)

21. Turbidite Depositional History
Turbidite Patterns Within Stratigraphic Units
Unit A
Major NE Channel/ Channel complex
NE Channel/ Channel complex
Fan/lobes from NE Channel
Splay
Major SW Fan/ Channel fan complex
Extended Fan network (SW)
Mass transport complex
Levee- overbank deposit
Basin Plain N
(Sarkar PhD 2011)

22. Seismic Reservoir Characterization
Interpretation
μρ(Gpa-g/cm3)
λρ (Gpa-g/cm3) 10 40 60
100
140 20 30 50
120
Quartz
Calcite 70 80 90
110
Feldspar (avg)
(Sarkar PhD 2011)

23. Seismic Reservoir Characterization
Interpretation
Correlation with production
5 km
Potential good production areas
(Sarkar PhD 2011)

24. Seismic Reservoir Characterization
Interpretation
Correlation with production
Potential good production areas
Relative indices for six month’s cumulative production
5 km

25. Agenda Time Presenter 8:00-9:00 CONTINENTAL BREAKFAST 9:00-10:00
POSTERS
10:00-11:45
Presentations
12:10-13:00
LUNCH
13:00-14:15
14:15-15:45
POSTER BREAK
15:45-17:00
17:00-19:00
WINE, BEER, CHEESE AND FEEDBACK