U. S. Patent No. 6,269,311: Issued for ``Discrimination of porosity and
fluid saturation using seismic velocity analysis'' to J. G. Berryman on July 31, 2001.
ABSTRACT:
The method of the invention is employed for determining the state of
saturation in a subterranean formation using only seismic velocity measurements
(e.g., shear and compressional wave velocity data). Seismic velocity data
collected from a region of the formation of like solid material properties
can provide relatively accurate partial saturation data derived from a
well-defined triangle plotted in a
(rho/mu,lambda/mu)-plane. When the seismic velocity data are collected
over a large region of a formation having both like and unlike materials,
the method first distinguishes the like materials by initially plotting
the seismic velocity data in a (rho/lambda,mu/lambda)-plane to determine
regions of the formation having solid material properties and porosity.
Pertinent publication
E-mail to
berryman1@llnl.gov
Lawrence Livermore National Laboratory