Physically scaled two-dimensional models of miscible displacement of residual oil

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5810625

Gharib, S

The displacement of residual oil by miscible fluid injection, subsequent to waterflooding, has been studied using scaled physical models of line-drive systems. The effects of flow rate, mobility ratio, density gradients, and the geometry of the system were investigated. At a low ratio of viscous to gravity forces (low injection rates), the override of low density solvents was visually confirmed by using colored solvents. There is a difference in performance depending upon the fluid velocity. At low velocities, fingering is much more pronounced, breakthrough is earlier, and ultimate recovery somewhat less than when using higher velocities or adjusting the solvent viscosity so that a favorable solvent/water viscosity ratio is achieved. A low permeability decreases gravity override. Volumetric conformance is enhanced, and greater quantities of movable water are displaced ahead of the solvent.

• OSTI ID: 5810625
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
DENSITY
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLOW RATE
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
PERMEABILITY
PETROLEUM
PHYSICAL PROPERTIES
RECOVERY
RESIDUAL PETROLEUM
SCALE MODELS
STRUCTURAL MODELS
VISCOSITY
WELLS