Fluids and frequency dependent seismic velocity of rocks

Autor:	De-hua Han, John P. Castagna, M. Batzle, Ronny Hofmann
Rok vydání:	2001
Předmět:	Permeability (earth sciences) Geophysics Biot number Shear (geology) Wave propagation Seismic velocity Hertz Geology Low frequency Physics::Geophysics
Zdroj:	The Leading Edge. 20:168-171
ISSN:	1938-3789 1070-485X
Popis:	Summary Compressional and shear velocities of rocks are dependent on frequency and this dispersion may be significant even within the seismic band. The amount and position of dispersion will be largely a function of fluid properties, distribution, and motion in the pores. Velocities are thus directly coupled to rock permeability and pore compliance. Propagation often will be in the high frequency regime, even at a few tens of Hertz. Static, or low frequency models such as Gasmann will fail under such conditions. In addition, Biot theory will not correctly model wave propagation in many cases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::471079f87da4ac9148599137743a6747 https://doi.org/10.1190/1.1438900 Zobrazit plný text záznamu