Welcome and overview of AASPI accomplishments and software development

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

2. AASPI 2010 Sponsors

3. AASPI 2010 Personnel Changes • Ha Mai– (Ph.D. – Geophysics) – to PetroVietnam • Xavier Refunjol (M.S. Geophysics) – to Swift Energy • Victor Pena (M.S. Geophysics) – to BP • Rachel Barber (M.S. Geophysics) – to Devon • Jeremy Fisk (M.S. Geophysics) – now a cowboy • Marcilio Matos (Visiting scholar) - back home to Rio de Janeiro out • Brad Wallet – (Ph.D. – Geophysics) – to Schlumberger • 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) – ??? • Oz Elis - to TPAO • Alejandro Cabrales (M.S. Geophysics) – to PEMEX going • Araceli Romero (M.S. Geophysics) • Nabanita Gupta (Ph.D. Geology) • Yoryenys del Moro (M.S. Geophysics) • Toan Dao (M.S. Geophysics) • S. “Mike” Gao (M.S. Geophysics) in

4. AASPI 2010 Software Development • Developed and released the following new attributes • Reflector convergence • Reflector rotation • Strike of most-positive and negative principal curvatures • Azimuthal intensity • Euler (apparent) curvature • Principal component analysis of multiple attributes (input to SOM) • Prototyped the following new algorithms • Azimuthal anisotropy intensity, strike, and confidence • Prestack structure-oriented filtering on migrated gathers • Constrained least-squares prestack time migration (2D, 3D?) • Prestack data padding of migrated gathers • Phase residue mapping of unconformities • Self-organizing maps (most in Fortran90, some still in Matlab) • Improved the following existing algorithms • Spectral decomposition (improved performance) • Structure-oriented filtering with spectral bands • Rose diagrams (now reads in principal curvatures and strikes)

5. AASPI 2010 Workflow Development • Use of acoustic impedance in AVAz analysis (Kui Zhang) • 2nd derivatives (“curvature”) of acoustic impedance for fracture identification (Yanxia Guo) • Calibration of curvature anomalies with outcrop analogues and image logs (Evan Staples) • Correlation of production with fracture lineaments (Kui Zhang and Yanxia Guo) • Correlation of P-wave anisotropy with induced fractures (Amanda Thompson and Kui Zhang) • Correlation of attributes with sequence stratigraphy (Supratik Sarkar) • Correlation of microseismic with impedance (Xavier Refunjol)

6. AASPI Software

7. AASPI Software

8. Representative flow chart

9. Bug reporting, fixes and updates

10. Attributes based on volumetric dip and azimuth Seismic amplitude Inline dip Crossline dip Quadratic surface? Coherence yes Principal curvatures Strike of Principal curvatures Shape components Lineament volumes

11. Strike, ψk2 -90 0 +90 strong N N N W W W E E E Most-negative principal curvature, k2 S S S weak N

12. ψk2 k2 Strike modulated by most-negative principal curvature 5 km 0.8 1.0 Time (s) 1.2 N (Seismic data courtesy of Devon Energy)

13. ψk2 k2 Strike modulated by most-negative principal curvature, co-rendered with coherence Coh Amp 5 km 1.0 Positive 0 0.6 Negative 0.8 1.0 Time (s) Strike vs. k2 Opacity 255 1.2 0 0 1 N (Seismic data courtesy of Devon Energy)

14. Attributes based on volumetric dip and azimuth Seismic amplitude Inline dip Crossline dip Quadratic surface? Coherence yes no Principal curvatures Strike of Principal curvatures Reflector convergence Shape components Lineament volumes

15. Reflector convergence co-rendered with coherence t=1.1 s 0.6 A A’ A’ 0.8 1.0 Time (s) 1.2 A 1.4 1.6 1.8 N Amp Positive 0 Negative Coh 1.0 0.6 N W E S

16. Reflector convergence co-rendered with coherence t=1.1 s B B’ 0.6 0.8 1.0 1.2 Time (s) 1.4 B’ 1.6 B 1.8 N Amp Positive 0 Negative Coh 1.0 0.6 N W E S

17. Reflector convergence co-rendered with coherence t=1.1 s C C’ 0.6 0.8 1.0 Time (s) 1.2 C’ 1.4 1.6 1.8 N C Amp Positive 0 Negative Coh 1.0 0.6 N W E S

18. Agenda