Method of servicing a wellbore with a sealant composition comprising solid latex

Abstract

A method of servicing a wellbore comprising placing a sealant composition comprising solid latex into the wellbore.

1 . A method of servicing a wellbore comprising placing a sealant composition comprising solid latex into the wellbore.  
   
   
       2 . The method of  claim 1  wherein the solid latex is prepared by removing water from an aqueous latex solution.  
   
   
       3 . The method of  claim 2  wherein the emulsion polymerized latex system comprises vinyl aromatic monomers, ethylene, butadiene, vinylnitrile, olefinically unsaturated esters of C 1 -C 8  alcohol, ethylenically unsaturated carboxylic acids or combinations thereof  
   
   
       4 . The method of  claim 2  wherein the emulsion polymerized latex system comprises a colloidally stabilized latex, an alkali swellable latex or combinations thereof.  
   
   
       5 . The method of  claim 1  wherein the solid latex is reconstituted by mixing the dry latex with an aqueous solution, a non-aqueous solution or combinations thereof.  
   
   
       6 . The method of  claim 1  wherein the sealant composition further comprises an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant or combinations thereof.  
   
   
       7 . The method of  claim 1  wherein the sealant composition further comprises cement.  
   
   
       8 . The method of  claim 1  wherein the solid latex is an alkali swellable solid latex or derivative thereof and the sealant composition further comprises a pH-increasing material.  
   
   
       9 . The method of  claim 8  wherein the pH-increasing material is an alkali metal hydroxide, alkaline earth metal hydroxide, transition metal hydroxide, carbonate, bicarbonate, phosphate, organic amine, or combinations thereof.  
   
   
       10 . The method of  claim 1  wherein the sealant composition further comprises an organophilic clay.  
   
   
       11 . The method of  claim 1  wherein the sealant composition further comprises a viscosifier.  
   
   
       12 . The method of  claim 1  further comprising contacting the sealant composition with a drilling mud.  
   
   
       13 . The method of  claim 12  wherein the mud comprises a pH-increasing material and solid latex is an alkali swellable solid latex.  
   
   
       14 . The method of  claim 1  wherein the sealant composition further comprises a cross-linking agent, a vulcanization accelerator, a vulcanization retarder, or combinations thereof.  
   
   
       15 . The method of  claim 14  wherein the cross-linking agent comprises sulfur, 2,2′-dithiobisbenzothiazole, organic peroxides, azo compounds, alkylthiuram disulfides, selenium phenolic derivatives, or combinations thereof.  
   
   
       16 . The method of  claim 14  wherein the vulcanization accelerators comprises a fatty acid, metallic oxides), aldehyde amine compound, guanidine compounds, disulfide thiuram compounds, or combinations thereof.  
   
   
       17 . The method of  claim 14  wherein the vulcanization retarder comprises salicylic acid, sodium acetate, phthalic anhydride, N-cyclohexyl thiophthalimide, defoamers, or combinations thereof.  
   
   
       18 . The method of  claim 1  wherein servicing the wellbore comprises completing the wellbore.  
   
   
       19 . The method of  claim 1  wherein servicing the wellbore comprises primary or secondary cement of the wellbore.  
   
   
       20 . The method of  claim 1  wherein servicing the wellbore comprises reestablishing circulation following a loss of circulation in the wellbore.  
   
   
       21 . The method of  claim 20  further comprising drilling ahead upon reestablishing circulation in the wellbore.  
   
   
       22 . The method of  claim 1  wherein servicing the wellbore comprises sealing a permeable zone in the wellbore.