AVO + Seismic Inversion Training

Elastic constants

1. The stress tensor, the strain tensor, Hooke’s law: stress-strain relationships
2. Definition of elastic constants
3. Relationships between elastic constants
4. Wave propagation and wave phenomena
5. P-waves and S-waves

AVO : Amplitude Versus Offset and AVA : Amplitude Versus Angle

1. Factors affecting amplitudes
2. The boundary conditions
3. Example of normal incidence reflection and transmission
4. Reflection and transmission for isotropic elastic media – the Zoeppritz equations
5. Approximate expressions for reflection coefficients
6. Rock properties; fluid substitution algorithms and Vp-Vs relationships
7. Processing for AVO
8. Estimation of AVO parameters and AVO inversion
9. AVO attributes, crossplotting of AVO attributes and AVO classification
10. Reflectivity from logs and AVO modeling
11. Angle stacks and elastic impedance
12. Auxiliary topics:
– deconvolution
– detuning
– least-squares estimation and inversion techniques

Seismic amplitude modeling

Workshop seismic amplitude modeling

True-amplitude migration

1. Discussion of different approaches
2. Imaging conditions and amplitude recovery
3. The Beylkin determinant

Seismic-to-Well Matching

1. Model based wavelet estimation; merging different seismic surveys
2. Seismic-to-well matching: amplitude calibration
3. Reflectivity estimation; the O’Doherty Anstey model
4. Seismic-to-well matching: quantitative measures
5. Seismic wavelet determination with well data
6. Seismic attributes: classification and derivation
7. Coherency measurement and applications
8. Seismic data inversion

Seismic data inversion

1. From reflectivity to acoustic impedance to reservoir properties
2. Least-squares filtering and estimation
3. Singular value decomposition (SVD)
4. Resolution matrix and covariance matrix
5. Probability theory and Bayesian approach to inversion
6. Determinist inversion and stochastic inversion
7. Full waveform inversion (FWI)
8. Kriging, cokriging and sequential Gaussian simulation (SGS)