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:
- Issue Date:
- Research Org.:
- University of Southern Mississippi
- OSTI Identifier:
- 7159139
- Patent Number(s):
- 4584358
- Application Number:
- PPN: US 6-743857
- Assignee:
- Univ. of Southern Mississippi, Hattiesburg, MS (United States)
- DOE Contract Number:
- AS19-80BC10321
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 12 Jun 1985
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; DISPLACEMENT FLUIDS; ADDITIVES; VISCOSITY; OIL WELLS; WATERFLOODING; ACRYLAMIDE; CALCIUM CHLORIDES; COPOLYMERS; ENHANCED RECOVERY; PETROLEUM; SODIUM CHLORIDES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; AMIDES; CALCIUM COMPOUNDS; CALCIUM HALIDES; CHLORIDES; CHLORINE COMPOUNDS; ENERGY SOURCES; FLUID INJECTION; FLUIDS; FOSSIL FUELS; FUELS; HALIDES; HALOGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC POLYMERS; POLYMERS; SODIUM COMPOUNDS; WELLS; 020300* - Petroleum- Drilling & Production
Citation Formats
McCormick, C L, and Blackmon, K P. Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems. United States: N. p., 1986.
Web.
McCormick, C L, & Blackmon, K P. Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems. United States.
McCormick, C L, and Blackmon, K P. Tue .
"Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems". United States.
@article{osti_7159139,
title = {Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems},
author = {McCormick, C L and Blackmon, K 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 = {Tue Apr 22 00:00:00 EST 1986},
month = {Tue Apr 22 00:00:00 EST 1986}
}
Search for the full text at the U.S. Patent and Trademark Office
Note: You will be redirected to the USPTO site, which may require a pop-up blocker to be deactivated to view the patent. If so, you will need to manually turn off your browser's pop-up blocker, typically found within the browser settings. (See DOE Patents FAQs for more information.)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.