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Title: 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:
;
Publication Date:
Research Org.:
University of Southern Mississippi
OSTI Identifier:
7159139
Patent Number(s):
US 4584358; A
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 = {1986},
month = {4}
}