Taylor's dispersion in stratified porous media

Conference · Mon Jan 01 04:00:00 EST 1979 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5862485

Hirasaki, G J; Lake, L W

In 1953 to 1954, G.I. Taylor showed that if a certain criterion is met, the combined effects of the transverse profile of longitudinal velocity and transverse diffusion on a solvent slowly flowing through a tube will manifest themselves as a longitudinal diffusion phenomenon. A similar phenomenon exists in stratified porous media where the transverse profile of longitudinal velocity and transverse dispersion can produce an effective longitudinal dispersion, termed Taylor's dispersion. Since this effective longitudinal dispersion is larger than the corresponding homogeneous longitudinal dispersion, the quantitive description of this phenomenon would be important to dispersion-sensitive EOR processes, such as surfactant or miscible flooding. Taylor's dispersion will occur in 2-layer porous media if a suitably defined dimensionless transverse dispersion number is much greater than unity. When this condition holds the effluent history of a unit viscosity, equal density, miscible displacement is that of the same displacement in a homogeneous medium with increased dispersion. The resulting effective longitudinal dispersion may be derived analytically, and verified numerically, as a function of several media properties and permeability contrast. 17 references.

• OSTI ID: 5862485
• Report Number(s): CONF-790913-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-8436
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
DENSITY
DIFFUSION
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
MATERIALS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
PERMEABILITY
PETROLEUM
PHYSICAL PROPERTIES
POROUS MATERIALS
RECOVERY
SOLVENTS
STRATIFICATION
SURFACTANTS
TESTING
VELOCITY
VISCOSITY
WATERFLOODING
WELLS