Simplified performance calculation for pattern waterfloods in stratified reservoirs

Conference · Mon Jan 01 04:00:00 EST 1968 · SPE Prepr.; (United States)

OSTI ID:5212638

Hiatt, W N

A simplified method is developed to calculate the performance of pattern waterfloods in stratified reservoirs. The method is applicable to reservoirs in which prior gas saturation has been developed as a result of pressure depletion. The method also accounts for the effects on volumetric coverage that result both from permeability stratification and from variations in pattern sweep efficiency. A previously developed layer system analysis is combined with existing correlations of pattern sweep vs. injected volume to give volumetric coverage; this is used in conjunction with an oil-water-gas displacement factor analysis, based on estimated or experimentally determined fluid saturation changes caused by waterflooding, to give the development and progress of the oil bank through the partially depleted reservoir. Oil, water, free gas production, and recovery of oil and free gas in terms of percent displaceable are computed as a function of displaceable volumes injected. Calculations can be carried out for any degree of permeability stratification or for any reservoir water-oil mobility ration or displacement factor. (11 refs.)

• Research Organization: Superior Oil Co
• OSTI ID: 5212638
• Report Number(s): CONF-681148-
• Conference Information: Journal Name: SPE Prepr.; (United States) Journal Volume: SPE2007
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
GAS SATURATION
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
MULTIPHASE FLOW
OIL WELLS
PERFORMANCE
PERMEABILITY
PETROLEUM
PRESSURE DROP
PRODUCTIVITY
RECOVERY
RESERVOIR ROCK
SATURATION
WATERFLOODING
WELLS