Methods of consolidating subterranean zones and compositions therefor

Abstract

Methods of consolidating subterranean zones and hardenable resin compositions are provided. A hardenable resin composition of the invention basically comprises a furan liquid resin mixture comprising a 2-furanmethanol homopolymer and furfuryl alcohol, an organosilane coupling agent and an acid catalyst.

1 . A hardenable resin composition comprising: 
 a furan liquid resin mixture comprising a 2-furanmethonal homopolymer and furfuryl alcohol;    an organosilane coupling agent; and    an acid catalyst.    
   
   
       2 . The composition of  claim 1  wherein said 2-furanmethonal homopolymer is present in said furan liquid resin mixture in an amount in the range of from about 55% to about 60% by weight thereof and said furfuryl alcohol is present in said mixture in an amount in the range of from about 40% to about 45% by weight thereof.  
   
   
       3 . The composition of  claim 1  wherein said furan liquid resin mixture is present in said hardenable resin composition in an amount in the range of from about 20% to about 60% by weight thereof.  
   
   
       4 . The composition of  claim 1  wherein said solvent is selected from the group consisting of furfuryl acetate, C 1 -C 8  alkyl acetates, 2-butoxy ethanol, diethylene glycol methyl ether, diethylene glycol dimethyl ether, and dipropylene glycol methyl ether.  
   
   
       5 . The composition of  claim 1  wherein said solvent is furfuryl acetate.  
   
   
       6 . The composition of  claim 1  wherein said solvent is present in said hardenable resin composition in an amount in the range of from about 40% to about 80% by weight thereof.  
   
   
       7 . The composition of  claim 1  wherein said organosilane coupling agent is selected from the group consisting of N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane and n-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane.  
   
   
       8 . The composition of  claim 1  wherein said organosilane coupling agent is N-2-(aminoethyl)-3-aminopropyltrimethoxysilane.  
   
   
       9 . The composition of  claim 1  wherein said organosilane coupling agent is present in said hardenable resin composition in an amount in the range of from about 0.1% to about 2% by weight thereof.  
   
   
       10 . The composition of  claim 1  wherein said acid catalyst is selected from the group consisting of salicylic acid, ethylenediaminetriacetic acid, benzoic acid, oxalic acid, maleic acid, alkyl benzenesulfonic acid and salts thereof.  
   
   
       11 . The composition of  claim 1  wherein said acid catalyst is an alkyl benzenesulfonic acid.  
   
   
       12 . The composition of  claim 1  wherein said acid catalyst is present in said hardenable resin composition in an amount in the range of from about 0.01% to about 10% by weight thereof.