Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems
Abstract
A water-soluble ionically-charged random copolymer of acrylamide and an alkaline or 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 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:
- 865824
- Patent Number(s):
- 4584358
- 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; ionically-charged; random; copolymer; acrylamide; alkaline; alkali; metal; 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; terpolymers; additionally; contain; olefinically; unsaturated; monomers; acrylic; acid; sodium; acrylate; recovery method; random copolymer; average molecular; aqueous systems; tertiary oil; minor amounts; oil recovery; alkali metal; molecular weight; minor amount; highly effective; mobility control; unsaturated monomers; additionally contain; acrylic acid; olefinically unsaturated; n-substituted acrylamides; control agent; n-substituted acrylamide; unsaturated monomer; calcium-tolerant n-substituted; /526/
Citation Formats
McCormick, Charles L, and Blackmon, Kenneth P. Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems. United States: N. p., 1986.
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. Wed .
"Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems". United States. https://www.osti.gov/servlets/purl/865824.
@article{osti_865824,
title = {Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems},
author = {McCormick, Charles L and Blackmon, Kenneth P},
abstractNote = {A water-soluble ionically-charged random copolymer of acrylamide and an alkaline or 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 terpolymers which additionally contain olefinically unsaturated monomers such as acrylic acid or sodium acrylate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}
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