Process for secondary recovery
Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with polyacrylamide or partially hydrolyzed polyacrylamide alkoxylated with an alkylene oxide and, if desired, a small amount of a sulfated, alkoxylated polyacrylamide, i.e., an N-substituted polyacrylamide having N-substituents of the formula: (CH/sub 2/CH/sub 2/O) /SUB m/ SP/sub 3/M where m is an integer of from 1 to 5 and M is selected from the group consisting of hydrogen, sodium, potassium or ammonium. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
- Assignee:
- Texaco Development Corp.
- Patent Number(s):
- US 4430482
- OSTI ID:
- 6927950
- Resource Relation:
- Patent File Date: Filed date 22 Mar 1982; Other Information: PAT-APPL-360941
- Country of Publication:
- United States
- Language:
- English
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Process for secondary recovery
Process for secondary recovery
Related Subjects
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
OIL WELLS
WATERFLOODING
ACRYLAMIDE
ALKENES
AMMONIUM COMPOUNDS
BRINES
CARBON DIOXIDE
COPOLYMERS
DISSOLVED GASES
ENHANCED RECOVERY
FLUID INJECTION
HYDROGEN IONS
HYDROLYSIS
INJECTION WELLS
NATURAL GAS
OXIDES
POTASSIUM IONS
PRESSURIZING
SODIUM IONS
SULFATES
WATER
AMIDES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
IONS
LYSIS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
RECOVERY
SOLUTES
SOLVOLYSIS
SULFUR COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production