Extraction of acidic materials from organic liquids and use thereof in enhanced oil recovery
In accordance with the present invention acidic materials, preferably naturally-occurring carboxylic acids from crude oils and acids formed by the oxidation of components of crude oils, are extracted from organic liquids containing the same by contacting the organic liquid with an aqueous polar organic solvent solution of potassium hydroxide. The polar organic solvents are preferably solvents selected from the group consisting of OH substituted hydrocarbons, SO substituted hydrocarbons, SO/sub 2/ substituted hydrocarbons, NH/sub 2/, NHR and NR/sub 2/ substituted hydrocarbons, CONH/sub 2/, CONHR and CONR/sub 2/ substituted hydrocarbons and CN substituted hydrocarbons. The thus extracted acidic materials may be neutralized with an appropriate alkaline material to produce the corresponding salts thereof. In another aspect of the present invention the thus extracted acids or the salts thereof are utilized to recover oil from a subterranean oil reservoir by utilizing the same in conjunction with waterflooding operations, particularly an alkaline waterflooding technique or a surfactant waterflooding technique.
- Assignee:
- Phillips Petroleum Co.
- Patent Number(s):
- US 4494604
- OSTI ID:
- 5932045
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CAUSTIC FLOODING
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DEMINERALIZATION
DESALINATION
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
EXTRACTION
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
MATERIALS RECOVERY
MIXTURES
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PETROLEUM
PH VALUE
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PROCESSING
PRODUCTION
RECOVERY
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WATERFLOODING
WELLS