Abstract for 7th
International Workshop on Seismic Anisotropy, Miami, 19-23
February, 1996.
Azimuthal variation in AVO response for fractured gas sands
by
Colin M. Sayers and James E. Rickett
Schlumberger Cambridge Research, Madingley Rd, Cambridge CB3 0EL, UK
ABSTRACT
The effect of natural fractures on the azimuthal AVO response from a gas
sandstone reservoir encased within shale is investigated. A simple expression
for the difference in P-wave reflection coefficient from the top of the
reservoir parallel and perpendicular to the strike of the fractures is
obtained in terms of the normal and tangential compliances Z