Polyacrylamide-polyalkeneoxide mobility control process
Both polyelectrolytes and nonpolyelectrolytes, e.g., partially hydrolyzed polyacrylamides, polyalkeneoxide polymers, and polyalkeneoxides, have been used as thickening agents to increase the viscosity of liquids, primarily displacing liquids for use in secondary petroleum recovery. Such polymers and oxides, i.e., partially hydrolyzed polyacrylamides, polyalkene, and polyalkeneoxide, decrease the mobility of the displacing the liquids to improve their efficiency in displacing oil-in-place from formations and moving the oil toward production wells. Decreasing the mobility of the displacing fluids minimizes fingering or channeling of a displacing fluid through the body of oil- in-place in the formation. Improved viscosity, resistance factors, and mobility control of aqueous polyelectrolyte solutions are obtained by incorporating synergistic amounts of polymers containing nonpolyelectrolyte. An example of such a solution is 400 ppm of partially hydrolyzed polyacrylamide and 100 ppm of polyethylene oxides. (14 claims)
- Assignee:
- TUL; EDB-82-009788
- Patent Number(s):
- US 3684014
- OSTI ID:
- 5925166
- Country of Publication:
- United States
- Language:
- English
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Polyacrylamide-polyalkeneoxide mobility control process
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CHEMICAL REACTIONS
CONTROL
DECOMPOSITION
EFFICIENCY
ELECTROLYTES
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROLYSIS
LYSIS
MOBILITY
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
POLYAMIDES
POLYMERS
RECOVERY
SOLVOLYSIS
STIMULATION
VISCOSITY
WATER TREATMENT
WATERFLOODING
WELL STIMULATION
WELLS