Oil recovery by microemulsion injection
Patent
·
OSTI ID:7225604
A process for the recovery of oil from a subterranean oil reservoir is described involving the injection of a microemulsion comprising neutralized organic acids extracted from a petroleum oil, oil, and a co-surfactant having mutual solubility for oil and water. The microemulsion may be injected in two portions with the terminal portion having lower concentrations of oil and co-surfactant than the initial portion. The neutralized organic acids employed in the microemulsion may be produced by the alkaline extraction of a petroleum oil. The microemulsion may also contain an alkyl aryl sulfonate, an alkaline agent, and a monovalent salt. 15 claims, 1 figure.
- Assignee:
- Mobil Oil Corp.
- Patent Number(s):
- US 4008769
- OSTI ID:
- 7225604
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ENHANCED RECOVERY
FLUID INJECTION
GEOLOGIC DEPOSITS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL FIELDS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM DEPOSITS
RESOURCES
SULFONATES
WELL STIMULATION
WELLS
020300* -- Petroleum-- Drilling & Production
ENHANCED RECOVERY
FLUID INJECTION
GEOLOGIC DEPOSITS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL FIELDS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM DEPOSITS
RESOURCES
SULFONATES
WELL STIMULATION
WELLS