An electrostatic approach to the association of sodium and calcium with surfactant micelles
Association of sodium and calcium with surfactant micelles was measured and electrostatic models were used to interpret the experimental results. It was hypothesized that the association of calcium with micelles having sulfonate or sulfonate anionic groups can be described by electrostatics alone-i.e., specific chemical associations were not considered. Interpretation of data obtained with ultrafiltration (UF) membranes that separate free electrolyte solution from micelles supports this hypothesis. Two parameters estimated for the electrostatic model were the lengths of the hydrophilic groups and the specific areas of surfactants on the surfaces of micelles. The Donnan equilibrium model was used to calculate the exchange of sodium and calcium to make a comparison with mass-action models.
- Research Organization:
- Shell Development Co.
- OSTI ID:
- 5488893
- Journal Information:
- SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States) Vol. 1:2; ISSN SREEE
- Country of Publication:
- United States
- Language:
- English
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020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CALCIUM
CALCIUM COMPOUNDS
CALCIUM SULFATES
DATA ANALYSIS
DONNAN THEORY
ELECTROLYTES
ELECTROSTATICS
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
EQUILIBRIUM
FILTRATION
FLUID INJECTION
FOSSIL FUELS
FUELS
MATHEMATICAL MODELS
MEMBRANES
METALS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
SEPARATION PROCESSES
SODIUM
STIMULATION
SULFATES
SULFONATES
SULFUR COMPOUNDS
SURFACTANTS
ULTRAFILTRATION
WELL STIMULATION
WELLS