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Miscible Displacement in Saturated and Unsaturated Sandstone
Author(s) -
Corey John C.,
Nielsen D. R.,
Biggar J. W.
Publication year - 1963
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1963.03615995002700030014x
Subject(s) - saturation (graph theory) , mixing (physics) , displacement (psychology) , pore water pressure , porosity , soil water , geology , diffusion , mineralogy , water saturation , porous medium , geotechnical engineering , soil science , thermodynamics , psychology , physics , mathematics , quantum mechanics , combinatorics , psychotherapist
A description of soil water movement is more complete if the nature of the pore structure is known. Miscible displacement techniques were used to investigate the nature of the pore structure of a sandstone. The mixing of a 75‐ml. slug of tritiated CaCl 2 solution during displacement through 5 lengths of sandstone was measured. Different velocities and different degrees of water saturation were involved. Limited mixing by molecular diffusion for the various experimental conditions clearly revealed the lack of interconnection between major pore sequences. This pore structure differs markedly from that of soils or other unconsolidated porous materials.