Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
Abstract
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.
- Inventors:
-
- Hattiesburg, MS
- Issue Date:
- Research Org.:
- University of Southern Mississippi
- OSTI Identifier:
- 866174
- Patent Number(s):
- 4649183
- Assignee:
- University of Southern Mississippi (Hattiesburg, MS)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- DOE Contract Number:
- AS19-80BC10321
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- calcium-tolerant; n-substituted; acrylamides; thickeners; aqueous; systems; water-soluble; charged; random; copolymer; acrylamide; alkali; metal; salt; acrylamido-alkanoic; acid; 3-acrylamido-3-methylbutanoate; average; molecular; weight; 50; 000; found; maintain; unusually; stable; effective; viscosities; presence; salts; nacl; cacl; added; water; minor; amounts; highly; mobility; control; agent; secondary; tertiary; oil; recovery; methods; scope; form; polymer; terpolymers; additionally; contain; olefinically; unsaturated; monomers; acrylic; sodium; acrylate; recovery method; random copolymer; average molecular; aqueous systems; tertiary oil; minor amounts; oil recovery; alkali metal; molecular weight; metal salt; minor amount; highly effective; mobility control; unsaturated monomers; additionally contain; acrylic acid; acid form; olefinically unsaturated; n-substituted acrylamides; control agent; anoic acid; n-substituted acrylamide; unsaturated monomer; calcium-tolerant n-substituted; /526/507/
Citation Formats
McCormick, Charles L, and Blackmon, Kenneth P. Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems. United States: N. p., 1987.
Web.
McCormick, Charles L, & Blackmon, Kenneth P. Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems. United States.
McCormick, Charles L, and Blackmon, Kenneth P. Thu .
"Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems". United States. https://www.osti.gov/servlets/purl/866174.
@article{osti_866174,
title = {Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems},
author = {McCormick, Charles L and Blackmon, Kenneth P},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}
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