Physics
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1053n&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 9, p. 1053-1056
Physics
4
Compression Waves, Imaging Techniques, Permeability, Porosity, Rocks, Ultrasonic Radiation, High Resolution, Homogeneity, Hydrodynamics, Spatial Resolution, Wave Propagation
Scientific paper
A high-resolution slow wave imaging system based on attenuation measurement of transmitted airborne ultrasonic waves was developed to study the inhomogeneous pore structure in permeable formations. Currently, the threshhold sensitivity of the system is approximately 100mD, making possible the characterization of typical petroleum reservoir rocks with spatial resolution of between 0.5 and 5 mm in the 50 kHz to %00 kHz frequency range. The degree of disorder in permeable solids is of crucial importance especially when the relative permeability is considered. This new technique is expected to complement such methods as hydrodynamic dispersion measurements and petrography for characterizing flow in porous rocks.
Adler Laszlo
Bonner Brian P.
Nagy Peter B.
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