 |
(tel) 617.253.8027 (fax) 617.253.6385 |
|
(tel) 617.253.8027 (fax) 617.253.6385 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
3-D
Numerical Modeling of the P and SV Wave Reflections
from Fractured Reservoirs
Xiang Zhu
Submitted
to the Department of Earth, Atmospheric, and Planetary Sciences on August
1, 1997 in partial fulfillment of the requirements for the degree of Master
of Science
Abstract
We study the P and SV wave reflections from fractured reservoirs using 3-D
finite-difference simulations. The fractures induce anisotropy in seismic
velocities. Our calculations illustrate the effects of this fracture-induced
anisotropy on the reflection amplitudes. When the fracture density distribution
is heterogeneous, this heterogeneity perturbs the reflections. The strength
of this perturbation depends on many factors, such as wavelength, heterogeneity
scale, azimuth, and incident angle. We discuss the influence of these factors,
and the possible ways to retrieve the heterogeneity distribution information
from the reflection data. The results can help in understanding the seismic
reflection data and characterizing the fractured reservoirs.
