Calculation of AVA Responses for Finely Layered Reservoirs

Figure 9

AVA gathers of model M7: (a) and (b) are -waves; (c) and (d) are -waves. In (a) and (c), the reflection coefficients of isotropic parts are calculated at each shale-sand interface. In (b) and (d), the total interbedded shale and sand layers are equivalent to a VTI model.

(a)

(b)

(c)

(d)