Methods for controlling water and sand production in subterranean wells

Abstract

Methods comprising introducing a relative permeability modifier fluid into at least a portion of a subterranean formation to form a treated portion of the subterranean formation; and introducing a consolidating agent into the treated portion of the subterranean formation so as to transform at least a section of the treated portion of the subterranean formation into a consolidated region. In some embodiments, the subterranean formation may have been previously hydraulically fracture-stimulated.

1 . A method comprising: 
 introducing a relative permeability modifier fluid into at least a portion of a subterranean formation to form a treated portion of the subterranean formation; and    introducing a consolidating agent into the treated portion of the subterranean formation so as to transform at least a section of the treated portion of the subterranean formation into a consolidated region.    
   
   
       2 . The method of  claim 1  further comprising the step of treating the portion of the subterranean formation with a preflush fluid.  
   
   
       3 . The method of  claim 2  wherein the preflush fluid is selected from the group consisting of an aqueous based-fluid, a hydrocarbon-based fluid, a mutual solvent, a surfactant, and combinations thereof.  
   
   
       4 . The method of  claim 1  further comprising the step of allowing the consolidating agent to set for a period of time sufficient to allow consolidation of the portion of the subterranean formation.  
   
   
       5 . The method of  claim 1  wherein the step of treating the subterranean formation with a relative permeability modifier fluid occurs before introducing the consolidating agent.  
   
   
       6 . The method of  claim 1  wherein the subterranean formation has been previously hydraulically fracture-stimulated.  
   
   
       7 . The method of  claim 1  further comprising the step of introducing an after-flush fluid into the portion of the subterranean formation after introduction of the consolidating agent.  
   
   
       8 . The method of  claim 7  wherein the after-flush fluid is introduced into the portion of the subterranean formation while the consolidating agent is in a flowable state.  
   
   
       9 . The method of  claim 1  wherein the consolidating agent is selected from the group consisting of a resin, a tackifying agent, a gelable liquid composition, and combinations thereof.  
   
   
       10 . The method of  claim 1  wherein the relative permeability modifier fluid is selected from the group consisting of a water-soluble, hydrophobically modified polymer; a water-soluble, hydrophilically modified polymer; a water-soluble polymer without hydrophobic or hydrophilic modification; and combinations thereof.  
   
   
       11 . The method of  claim 1  wherein the relative permeability modifier fluid comprises an amino methacrylate/alkyl amino methacrylate copolymer.  
   
   
       12 . A method comprising: 
 providing at least a portion of a subterranean formation that has been previously hydraulically fracture-stimulated;    treating the subterranean formation with a relative permeability modifier fluid to form a treated portion of the subterranean formation; and    introducing a consolidating agent into the treated portion of the subterranean formation so as to transform a section of the treated portion of the subterranean formation into a consolidated region.    
   
   
       13 . The method of  claim 12  further comprising the step of treating the portion of the subterranean formation with a preflush fluid.  
   
   
       14 . The method of  claim 12  wherein the preflush fluid is selected from the group consisting of an aqueous based-fluid, a hydrocarbon-based fluid, a mutual solvent, a surfactant, and any mixture thereof.  
   
   
       15 . The method of  claim 12  further comprising the step of allowing the consolidating agent to set for a period of time sufficient to allow consolidation of the portion of the subterranean formation.  
   
   
       16 . The method of  claim 12  wherein the step of treating the subterranean formation with a relative permeability modifier fluid occurs before introducing the consolidating agent.  
   
   
       17 . The method of  claim 12  wherein the consolidating agent is selected from the group consisting of a resin, a tackifying agent, a gelable liquid composition and combinations thereof.  
   
   
       18 . The method of  claim 12  wherein the relative permeability modifier fluid is selected from the group consisting of a water-soluble, hydrophobically modified polymer; a water-soluble, hydrophilically modified polymer; a water-soluble polymer without hydrophobic or hydrophilic modification; and combinations thereof.  
   
   
       19 . The method of  claim 12  wherein the relative permeability modifier fluid comprises an amino methacrylate/alkyl amino methacrylate copolymer.  
   
   
       20 . The method of  claim 12  further comprising the step of introducing an after-flush fluid into the portion of the subterranean formation after introduction of the consolidating agent.