New insights into tracer propagation in partially saturated porous media
نویسندگان
چکیده
منابع مشابه
Waves in Partially Saturated Porous Media
E orts to extend the theory of poroelasticity to semilinear and nonlinear elastic response, to partially saturated pores, to inhomogeneous solid frame materials, and to viscous losses due to localized ow e ects are summarized. The prospects for a comprehensive theory of wave propagation in partially saturated porous media and the reasons for needing such a theory are also discussed. The main re...
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We simulate wave propagation in a partially saturated porous medium, where the novel feature is the presence of a second slow wave due to capillary forces. The pores are filled with a wetting fluid and a non-wetting fluid, and the model, based on a Biot-type three-phase theory, predicts three compressional waves and one shear wave. Moreover, the theory models the realistic attenuation levels ob...
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Preferential flow in unsaturated porous media, in the form of fingers and channels, has been observed to take place in different types of media and at different scales. The preferential flow is caused by fluid instabilities, created by density or viscosity differences, or because of heterogeneities in the geological media. In this study, two very different types of preferential flow problems ar...
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A theory of porous media with voids filled by two immiscible fluids should comply with Laplace’s law of capillary pressure at the pore level. For the convenience of practical use, it ideally should also involve only the generic elastic coefficients of the mineral grains and pore-filling fluids and avoid the use of “bulk” coefficients of the dry solid frame, whose measurement involves idealized ...
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ژورنال
عنوان ژورنال: Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles
سال: 2020
ISSN: 1294-4475,1953-8189
DOI: 10.2516/ogst/2020021