Compressional and shear velocities of earth formations are measured through casing. The determined compressional and shear velocities are used in a two component mixing model to provides improved quantitative values for the solid, the dry frame, and the pore compressibility. These are used in determination of hydrocarbon saturation.
STATEMENT OF GOVERNMENT SUPPORTED RESEARCH
This application is based in part on research supported by the Department of Energy under grant DE-FG03-97ER82385. The Government has retained no rights in the invention.