Wellbore Servicing Fluids Comprising Grafted Homopolymers and Methods of Using Same

Abstract

A non-aqueous wellbore servicing fluid comprising an alpha-olefin homopolymer grafted with a polar monomer.

1 . A non-aqueous wellbore servicing fluid comprising an alpha-olefin homopolymer grafted with a polar monomer, wherein the grafted homopolymer comprises ethylene maleic anhydride. 
     
     
         2 . The fluid of  claim 1  further comprising a styrenic copolymer. 
     
     
         3 . The fluid of  claim 1  wherein the ethylene maleic anhydride is grafted in an amount of from about 0.1 wt. % to about 5 wt. % based on the total weight of homopolymer. 
     
     
         4 . The fluid of  claim 1  wherein the ethylene maleic anhydride has not been subjected to post-grafting treatment. 
     
     
         5 . The fluid of  claim 1  wherein the grafted homopolymer is present in an amount of from about 0.1 wt. % to about 5 wt. % based on the total weight of the fluid. 
     
     
         6 . The fluid of  claim 2  wherein the styrenic copolymer is present in an amount ranging from about 0.05 wt. % to about 3 wt. % based on the total weight of the fluid. 
     
     
         7 . The fluid of  claim 1  further comprising diesel oil, mineral oil, an olefin, an organic ester, a synthetic fluid, or combinations thereof. 
     
     
         8 . The fluid of  claim 1  further comprising an invert emulsion. 
     
     
         9 . The fluid of  claim 1  further comprising a clay. 
     
     
         10 . The fluid of  claim 9  wherein the clay is present in an amount ranging from about 0.5 wt. % to about 10 wt. % based on the total weight of the fluid. 
     
     
         11 . The fluid of  claim 1  further comprising a shale stabilizer. 
     
     
         12 . The fluid of  claim 11  wherein the shale stabilizer comprises a sulfonated asphalt. 
     
     
         13 . The fluid of  claim 11  wherein the shale stabilizer is present in an amount ranging from about 0.1 pounds per barrel to about 10 pounds per barrel of the fluid. 
     
     
         14 . The fluid of  claim 1  further comprising a fluid loss additive. 
     
     
         15 . The fluid of  claim 14  wherein the fluid loss additive comprises a lignosulfonate, tannins, lignite or combinations thereof. 
     
     
         16 . The fluid of  claim 14  wherein the fluid loss additive is present in an amount of less than about 10 wt. % based on the total weight of the fluid. 
     
     
         17 . The fluid of  claim 1  further comprising a weighting agent. 
     
     
         18 . The fluid of  claim 17  wherein the weighting agent comprises barite, calcium carbonate, hematite, galena or combinations thereof. 
     
     
         19 . The fluid of  claim 1  formulated for use as a drilling fluid, a work-over fluid, a fracturing fluid, or a sweeping fluid. 
     
     
         20 . The fluid of  claim 1  which has a stable fluid viscosity when heated to a temperature of greater than about 400° F. 
     
     
         21 . A method of servicing a wellbore comprising placing the fluid of  claim 1  down a wellbore.