Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
Patent
·
OSTI ID:7262638
A water-soluble, charged, random copolymer of acrylamide and an alkali metal salt of an acrylamido-alkanoic acid such as alkali metal 3-acrylamido-3-methylbutanoate, having an average molecular weight of greater than about 50,000, has been found to maintain unusually stable and effective viscosities in the presence of salts such as NaCl and CaCl[sub 2] when added to water in minor amounts, thus making it a highly effective mobility control agent for secondary and tertiary oil recovery methods. Also within the scope of the invention are the acid form of the polymer, as well as terpolymers which additionally contain olefinically unsaturated monomers such as acrylic acid or sodium acrylate.
- Research Organization:
- University of Southern Mississippi
- DOE Contract Number:
- AS19-80BC10321
- Assignee:
- Univ. of Southern Mississippi, Hattiesburg, MS (United States)
- Patent Number(s):
- US 4649183; A
- Application Number:
- PPN: US 6-807405
- OSTI ID:
- 7262638
- Resource Relation:
- Patent File Date: 10 Dec 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
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Thu Jan 01 00:00:00 EST 1987
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OSTI ID:7262638
Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
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Tue Apr 22 00:00:00 EST 1986
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Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
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Wed Jan 01 00:00:00 EST 1986
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OSTI ID:7262638
Related Subjects
02 PETROLEUM
DISPLACEMENT FLUIDS
ADDITIVES
VISCOSITY
OIL WELLS
WATERFLOODING
ACRYLAMIDE
CHEMICAL COMPOSITION
ENHANCED RECOVERY
PETROLEUM
POLYMERS
AMIDES
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production
DISPLACEMENT FLUIDS
ADDITIVES
VISCOSITY
OIL WELLS
WATERFLOODING
ACRYLAMIDE
CHEMICAL COMPOSITION
ENHANCED RECOVERY
PETROLEUM
POLYMERS
AMIDES
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production