US2008161208A1PendingUtilityA1

Networked polymeric gels and use of such polymeric gels in hydrocarbon recovery

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Assignee: BECKMAN ERIC JPriority: Feb 27, 2004Filed: Mar 4, 2008Published: Jul 3, 2008
Est. expiryFeb 27, 2024(expired)· nominal 20-yr term from priority
Inventors:Eric J. BeckmanRonald A. LosassoJanice E. Losasso
Y10S507/903C08L 101/14
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Claims

Abstract

A composition includes water having a salinity of at least 1 ppt, at least one hydrophilic polymer containing primary (—NH 2 ) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of changing the permeability of a subterranean formation includes the step of injecting into a subterranean formation a composition comprising water, at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function.

Claims

exact text as granted — not AI-modified
1 . A composition comprising: water having a salinity of at least 1 ppt; at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function. 
     
     
         2 . The composition of  claim 1  wherein the water has a salinity of at least 3 ppt. 
     
     
         3 . The composition of  claim 1  wherein the water has a salinity of at least 10 ppt. 
     
     
         4 . The composition of  claim 1  wherein the water has a salinity of at least 10 ppt. 
     
     
         5 . The composition of  claim 1  wherein the water has a salinity of at least 35 ppt. 
     
     
         6 . The composition of  claim 1  wherein the reducing saccharide is a monosaccharide, a disaccharide or a polysaccharide. 
     
     
         7 . The composition of  claim 1  wherein the polymer is partially hydrolyzed poly(N-vinylformamide), partially hydrolyzed vinyl acetate/N-vinylformamide copolymer, hydrolyzed acrylonitrile/N-vinylformamide copolymer, amine functional polyacrylamide, acrylic acid/vinylamine copolymer, maleic anhydride/maleic acid copolymers with N-vinylformamide/vinylamine, N-vinylformamide/vinylamine polymers with vinyl sulfonate comonomer units, allylamine polymer, diallylamine polymer, allylamine/diallylamine copolymer, urea/formaldehyde condensation polymers, melamine/formaldehyde condensation polymers, amidoamine polymers, amine/epichlorohydrin polymers, poly(ethyleneimine), hydrolyzed poly(2-alkyl-2-oxazoline), partially hydrolyzed poly(2-alkyl-2-oxazoline), poly(diallyl dimethyl ammonium chloride), diallyl dimethyl ammonium chloride/acrylamide copolymer, diallyl dimethyl ammonium chloride/diallyl amine copolymer, or diallyl dimethyl ammonium chloride/allyl amine copolymer. 
     
     
         8 . The composition of  claim 1  wherein the polymer is a copolymer of vinyl amine and vinyl alcohol. 
     
     
         9 . The composition of  claim 8  wherein the copolymer is at least 0.5% by weight of vinyl amine. 
     
     
         10 . The composition of  claim 8  wherein the copolymer is at least 3% by weight of vinyl amine. 
     
     
         11 . The composition of  claim 8  wherein the copolymer is at least 6% by weight of vinyl amine. 
     
     
         12 . The composition of  claim 8  wherein the copolymer is at least 12% by weight of vinyl amine. 
     
     
         13 . The composition of  claim 1  wherein the mole ratio of amine to reducing saccharide is in the range of approximately 1:4 to approximately 8:1. 
     
     
         14 . The composition of  claim 1  further comprising a base. 
     
     
         15 . The composition of  claim 14  wherein the base is sodium hydroxide, potassium hydroxide, ammonia or calcium carbonate. 
     
     
         16 . The composition of  claim 1  wherein the saccharide is at least one of glucose, lactose, or 2-deoxy-D-ribose 
     
     
         17 . The composition of  claim 1  wherein the hydrophilic polymer is poly(diallyl dimethyl ammonium chloride), diallyl dimethyl ammonium chloride/acrylamide copolymer, diallyl dimethyl ammonium chloride/diallyl amine copolymer or diallyl dimethyl ammonium chloride/allyl amine copolymer. 
     
     
         18 . The composition of  claim 17  wherein the hydrophilic polymer is diallyl dimethyl ammonium chloride/acrylamide copolymer, diallyl dimethyl ammonium chloride/diallyl amine copolymer or diallyl dimethyl ammonium chloride/allyl amine copolymer. 
     
     
         19 . The composition of  claim 18  wherein the content of diallyl dimethyl ammonium chloride in the copolymer is at least 50 weight percent. 
     
     
         20 . The composition of  claim 18  wherein the content of diallyl dimethyl ammonium chloride in the copolymer is at least 70 weight percent. 
     
     
         21 . The composition of  claim 18  wherein the content of diallyl dimethyl ammonium chloride in the copolymer is at least 80 weight percent. 
     
     
         22 . The composition of  claim 17  wherein the hydrophilic polymer is diallyl dimethyl ammonium chloride/diallyl amine copolymer or diallyl dimethyl ammonium chloride/allyl amine copolymer. 
     
     
         23 . The composition of  claim 1  wherein the composition form a covalently crosslinked polymer network. 
     
     
         24 . The composition of  claim 1  wherein the composition forms an ionically crosslinked polymer network. 
     
     
         25 - 51 . (canceled)

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