Seismic applications to reservoir characterization and shear-wave velocity determination

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6916415

Hassanzadeh, S

This dissertation attempts to apply seismic methods to reservoir characterization and shear-wave velocity determination. In this endeavor, two papers have been written: (1) Seismic Modeling in Fluid-Saturated Porous Media: An Approach to Enhanced Reservoir Characterization, submitted to Geophysics, the Journal of the Society of Exploration Geophysicists for publication, and (2) Direct Estimation of Shear-Wave Interval Velocities from Seismic Data, published in Geophysics, vol. 50, no. 4, April 1985. The first paper develops a new seismic-modeling method with potential application to enhanced hydrocarbon reservoir characterization by providing information on porosity and permeability. The method is based on the explicit finite-difference formulation of the Biot's poroelastic equations. The most-significant finding of this work is that in the presence of heterogeneities there are considerable dispersion and dissipation of compressional waves due to macroscopic differential fluid-solid interaction. The second paper develops a new method which can estimate the shear-wave interval velocities from seismic data. The method is based on plane-wave decomposition of the observed data, which places most of the mode-converted shear energy in the post-critical region. By inverting the travel-time curves in this region, shear-wave interval velocities can be estimated. The importance of determination of shear-wave velocities as a function of depth is that they not only aid in identification of lithological characteristics, but also promise to be potential hydrocarbon indicators.

• Research Organization: Columbia Univ., New York, NY (USA)
• OSTI ID: 6916415
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
DEPTH
DETECTION
DIMENSIONS
ENERGY SOURCES
EXPLORATION
FINITE DIFFERENCE METHOD
FLOW RATE
FLUIDS
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
ITERATIVE METHODS
LITHOLOGY
MECHANICAL PROPERTIES
MINERAL RESOURCES
NUMERICAL SOLUTION
PERMEABILITY
PETROLEUM
PETROLEUM DEPOSITS
POROSITY
RESERVOIR FLUIDS
RESOURCES
SEISMIC DETECTION
SEISMIC SURVEYS
SHEAR PROPERTIES
SURVEYS