Modeling the seismic response: Seismic Modeling Modeling the seismic response: Determine bulk-rock velocity and density Calculate impedance (Recall: I = ρ x v) Represent impedance changes as reflection coefficient Convolve seismic wavelet to reflection coefficients Slide 7 We can model the seismic response at the boundary between two rock units if we know the velocity and density of each unit We calculate the reflection coefficient using the formula shown We then use a mathematical process called convolution to model the seismic response I2 - I1 I2+ I1 RC= Courtesy of ExxonMobil L 13 - Seismic Attributes