The effect of crossflow on waterflooding performance of stratified reservoirs

Conference · Tue Mar 01 04:00:00 EST 1983 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5522537

El-Khatib, N A.F.

A mathematical model is developed for waterflooding performance in linear stratified systems for both cases of noncommunicating layers with no crossflow and communicating layers with complete crossflow. The model accounts for variations of porosity and saturation in addition to permeability of the different layers. The model predicts the fractional oil recovery, the water cut, the total volume injected and the change in the total pressure drop or the change in injection rate at the water breakthrough in the successive layers. The developed model is applied to different examples or stratified reservoirs. It was found that crossflow between layers enhances the oil recovery for systems with favorable mobility ratios and retards oil recovery for systems with unfavorable mobility ratios. It was found also that crossflow causes the effect of the mobility ratio on oil recovery to become more pronounced. The variation of porosity and fluid saturations with permeability is found to increase oil recovery over that for the case of uniform porosity and saturations for both favorable and unfavorable mobility ratios.

• Research Organization: King Saud University
• OSTI ID: 5522537
• Report Number(s): CONF-830397-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE 11495
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ENGINEERING
ENGINEERING GEOLOGY
ENHANCED RECOVERY
FLOW MODELS
FLUID FLOW
FLUID INJECTION
FLUID MECHANICS
FLUIDS
GEOLOGY
MATHEMATICAL MODELS
MECHANICS
OIL WELLS
PERMEABILITY
POROSITY
RECOVERY
RESERVOIR ENGINEERING
RESERVOIR FLUIDS
RESERVOIR ROCK
STRATIFICATION
WATERFLOODING
WELLS