Calcium carbonate to increase viscosity of polyacrylamide fluids

Abstract

Compositions and methods of treating a subterranean formation including forming a fluid comprising polyacrylamide and calcium carbonate and introducing the fluid to the formation, wherein the viscosity of the fluid is higher than if no calcium carbonate is present. Compositions and methods of treating a subterranean formation penetrated by a well bore including forming a fluid comprising polyacrylamide, calcium carbonate, and crosslinker, and introducing the fluid to the formation, wherein the fluid viscosity at 100 s-1 is increased from 300 cP to 600 cP at a temperature of 93 degC. Compositions and methods of treating a subterranean formation penetrated by a well bore including forming a fluid comprising polyacrylamide and barium carbonate and introducing the fluid to the formation, wherein the viscosity of the fluid is higher than if no barium carbonate is present.

1 . A method of treating a subterranean formation penetrated by a well bore, comprising:
 forming a fluid comprising polyacrylamide and calcium carbonate; and   introducing the fluid to the formation,   wherein the viscosity of the fluid is higher than if no calcium carbonate is present.   
     
     
         2 . The method of  claim 1 , wherein the fluid also comprises a cross-linker. 
     
     
         3 . The method of  claim 2 , wherein the crosslinker comprises titanium, zirconium, or halfnium. 
     
     
         4 . The method of  claim 2 , wherein the crosslinker comprises formaldehyde or phenylacetate activated with hexamethylenetetramine. 
     
     
         5 . The method of  claim 1 , wherein the polyacrylamide has a molecular weight of 1 thousand to 30 million. 
     
     
         6 . The method of  claim 1 , wherein the polyacrylamide is in a concentration of 0.01 percent to 5 percent by weight. 
     
     
         7 . The method of  claim 1 , wherein the calcium carbonate is a power, crystal, granulate, flake, or fiber. 
     
     
         8 . The method of  claim 1 , wherein the calcium carbonate has a particle size of 0.01 micron to 5 mm. 
     
     
         9 . The method of  claim 1 , wherein the fluid viscosity at 100 s-1 is increased from 300 cP to 600 cP at a temperature of 93 degC. 
     
     
         10 . The method of  claim 1 , further comprising hydraulic fracturing, drilling, perforating, modifying the permeability, completions, fluid loss control, sand control, and water control. 
     
     
         11 . A method of treating a subterranean formation, comprising:
 forming a fluid comprising polyacrylamide, calcium carbonate, and crosslinker; and   introducing the fluid to the formation,   wherein the fluid viscosity at 100 s-1 is increased from 300 cP to 600 cP at a temperature of 93 degC.   
     
     
         12 . The method of  claim 11 , wherein the crosslinker comprises titanium, zirconium, or halfnium. 
     
     
         13 . The method of  claim 11 , wherein the crosslinker comprises formaldehyde or phenylacetate activated with hexamethylenetetramine. 
     
     
         14 . The method of  claim 11 , wherein the polyacrylamide has a molecular weight of 1 thousand to 30 million. 
     
     
         15 . The method of  claim 11 , wherein the polyacrylamide is in a concentration of 0.01 percent to 5 percent by weight. 
     
     
         16 . The method of  claim 11 , wherein the calcium carbonate is a power, crystal, granulate, flake, or fiber. 
     
     
         17 . The method of  claim 11 , wherein the calcium carbonate has a particle size of 0.01 micron to 5 mm. 
     
     
         18 . The method of  claim 11 , wherein the fluid viscosity at 100 s-1 is increased from 300 cP to 600 cP at a temperature of 93 degC. 
     
     
         19 . The method of  claim 11 , further comprising hydraulic fracturing, drilling, perforating, modifying the permeability, completions, fluid loss control, sand control, and water control. 
     
     
         20 . A method of treating a subterranean formation penetrated by a well bore, comprising:
 forming a fluid comprising polyacrylamide and barium carbonate; and   introducing the fluid to the formation,   wherein the viscosity of the fluid is higher than if no barium carbonate is present.