Waterflooding employing amphoteric surfactants
Process for the recovery of oil from a subterranean oil reservoir involving the injection into the reservoir of an aqueous solution of an amphoteric surfactant having an inner quaternary ammonium group linked to a terminal sulfonate or carboxylate group is described. The amphoteric surfactants may be employed in relatively low concentrations within the range of 0.0005 to 0.1% by weight and injected in a slug of at least 0.5 pv. The apparatus may be applied in situations in which the reservoir waters and/or the waters employed in formulating the surfactant solution contain relatively high amounts of divalent metal ions. Specifically described amphoteric surfactants include hydrocarby dialkyl or dihydroxyalkyl ammonium alkane sulfonates and carboxylates in which the hydrocarbyl group contains from 8 to 26 carbon atoms. 29 claims.
- Assignee:
- Mobil Oil Corp.
- Patent Number(s):
- US 4216097
- OSTI ID:
- 6004973
- Country of Publication:
- United States
- Language:
- English
Similar Records
Oil recovery by surfactant waterflooding
Oil recovery by waterflooding employing multicomponent surfactant systems
Related Subjects
020300* -- Petroleum-- Drilling & Production
AMINES
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
INJECTION WELLS
MIXTURES
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PETROLEUM
QUATERNARY COMPOUNDS
RECOVERY
SOLUTIONS
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
WATERFLOODING
WELLS