Effect of temperature on surfactant adsorption in porous media
The use of surfactants as additives to steamfloods has been proposed to improve the oil recovery efficiency of the steam drive process. A critical factor in this technique is the effect of temperature on surfactant transport through the porous media. Movement of the surfactant front relative to the solvent and heat fronts will be largely determined by the amount of adsorption onto the reservoir rock. An auxiliary phenomenon which also accounts for surfactant loss during high temperature flow through porous media is thermal decomposition of the surfactant. Prior to performing adsorption tests at elevated temperature the thermal stabilities of all surfactants were evaluated. The effect of temperature on the adsorption of 2 sulfonate surfactants and a nonionic surfactant onto crushed Berea sandstone was studied by both static and dynamic techniques. Static experiments were conducted from 25 to 95 C to define temperature sensitive rock-surfactant systems and to establish the shape of the equilibrium isotherm. Dynamic experiments extended the temperature range for sorption to 180 C.
- OSTI ID:
- 6323622
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ADSORPTION
EFFICIENCY
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
MATERIALS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
POROUS MATERIALS
RECOVERY
RESERVOIR ROCK
SORPTION
STABILITY
STEAM INJECTION
SULFONATES
SURFACTANTS
TEMPERATURE EFFECTS
THERMAL RECOVERY
TRANSPORT
WELLS
WETTABILITY