Quiz — Part 5: Rock Physics & AVO

Part 10 — Self-Assessment Quizzes

Learning objectives

Self-test mastery of Part 5: elastic framework, moduli, Gassmann fluid substitution, AVO basics, intercept-gradient crossplot, synthetics + inversion
Identify weak Part 5 topics before tackling Part 6 (Seismic Attributes) and Part 7 (Reservoir Char & QI)
Re-run with fresh draws to reinforce the QI toolkit

Self-assessment quiz drawn from a 30-question bank covering all six sections of Part 5 — Rock Physics & AVO. The quiz randomly selects 15 questions per session.

Part 5 is the QUANTITATIVE engine of the curriculum. Many of the questions involve calculations (impedance, reflection coefficients, modulus from velocities, Gassmann fluid substitution effects, R₀ + G from rock properties). Expect this quiz to feel more computational than Parts 2–4.

What this quiz tests

§5.1 Acoustic impedance, reflection coefficients, three independent elastic parameters (Vp, Vs, ρ) (5 Q)
§5.2 Four moduli (K, μ, λ, E), Vp/Vs as fluid+lithology diagnostic, Castagna’s mudrock line (5 Q)
§5.3 Gassmann fluid substitution — μ invariance, fizz effect, Vs increasing with gas (5 Q)
§5.4 Aki-Richards two-term approximation, intercept + gradient, AVO classes (6 Q)
§5.5 (R₀, G) crossplot, brine background trend, anomaly polygons, LMR space (5 Q)
§5.6 Synthetic seismograms (forward) + inversion (reverse); seismic-to-well tie (4 Q)

If you struggle with Gassmann or AVO calculations, work through the §5.3 + §5.4 widgets carefully — those interactive demos build intuition that pays off across the rest of the curriculum.

References

Mavko, G., Mukerji, T., & Dvorkin, J. (2009). The Rock Physics Handbook (2nd ed.). Cambridge University Press.
Castagna, J. P., & Backus, M. M. (Eds.). (1993). Offset-Dependent Reflectivity — Theory and Practice of AVO Analysis. Society of Exploration Geophysicists.
Hilterman, F. (2001). Seismic Amplitude Interpretation. SEG/EAGE Distinguished Instructor Short Course.
Foster, D. J., Keys, R. G., & Lane, F. D. (2010). Interpretation of AVO anomalies. Geophysics, 75(5), 75A3–75A13.