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Effect of phase behavior on recovery efficiency with micellar floods

Conference ·
OSTI ID:7093245
;
A study was done on the phase behavior and oil recoveries of micellar solutions. Using Berea sandstone cores, recoveries of about 100 percent of original oil were obtained by a waterflood (0.03N(17,500 ppM) sodium chloride brine) followed by a micellar slug, a polymer flood, and driven by a waterflood of the brine solution. The cores had been saturated with the brine solution and flooded with crude oil from the Bartlesville sand near Ochelata, Oklahoma (viscosity 9.0 cp at 25/sup 0/ C, 34.2/sup 0/ API gravity), before waterflooding. The micellar solution contained the Bartlesville (Ochelata) oil, brine, and Floodaid 130 (a petroleum sulfonate of equivalent weight 413, with an oxyethylated alcohol cosurfactant). The aqueous polymer solution was thickened by polyacrylamides in the brine solution.
OSTI ID:
7093245
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
EFFICIENCY
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
PETROLEUM
PHASE STUDIES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
WELL STIMULATION
WELLS