Effect of clays, limestone and gypsum on soluble oil flooding
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:7019395
It has been reported that the mineral composition of the reservoir affects oil recovery efficiency of the soluble oil-polymer flood. This study isolates the effect of particular mineral components often present in underground porous media on the soluble oil process. Small amounts (1 to 2%) of clay, gypsum or limestone were added to a sand pack and the effect of such minerals on oil recovery was observed. Experimental results showed that the soluble oil-flooding process is sensitive to any rock minerals which dissolve or otherwise markedly increase the divalent cation concentration in interstitial water. The relatively inert substances such as limestone do not materially affect the soluble oil process; whereas, gypsum has a considerable effect, because of its higher water solubility. Clays decrease oil recovery when interstitial water has low salinity, or when the exchangeable cation is calcium. The negative action of dissolved calcium on oil recovery can be minimized by increasing the sodium concentration in the interstitial water.
- Research Organization:
- Union Oil Co California
- OSTI ID:
- 7019395
- Report Number(s):
- CONF-7404143-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-4750
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
58 GEOSCIENCES
580100 -- Geology & Hydrology-- (-1989)
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONATE ROCKS
CLAYS
COMPARATIVE EVALUATIONS
EFFICIENCY
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
GROUND WATER
GYPSUM
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
LIMESTONE
MICROEMULSION FLOODING
MINERALS
MISCIBLE-PHASE DISPLACEMENT
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
ROCKS
SEDIMENTARY ROCKS
STIMULATION
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
WATER
WELL STIMULATION
020300* -- Petroleum-- Drilling & Production
58 GEOSCIENCES
580100 -- Geology & Hydrology-- (-1989)
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONATE ROCKS
CLAYS
COMPARATIVE EVALUATIONS
EFFICIENCY
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
GROUND WATER
GYPSUM
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
LIMESTONE
MICROEMULSION FLOODING
MINERALS
MISCIBLE-PHASE DISPLACEMENT
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
ROCKS
SEDIMENTARY ROCKS
STIMULATION
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
WATER
WELL STIMULATION