Sealant Compositions and Methods of Use

Abstract

Of the many methods and compositions provided herein, one method includes a method comprising introducing a sealant composition into a well bore that penetrates a subterranean formation, wherein the sealant composition comprises a base fluid, a binder material, and a filler material; and allowing the sealant composition to form a cohesive sealant. One composition provided herein includes a sealant composition comprising a base fluid, a binder material, and a filler material, wherein the sealant composition will form a cohesive sealant.

1 - 19 . (canceled) 
     
     
         20 . A sealant composition comprising a base fluid, a binder material in an amount of about 0.25% to about 30% by weight of the slurry, and a filler material, wherein:
 the binder material comprises at least one material selected from the group consisting of fly ash, hydrated lime, fume silica, a pozzolanic material, a cementitious material, and any derivative thereof; and   the sealant composition will form a cohesive sealant.   
     
     
         21 . The sealant composition of  claim 20  wherein the filler material is present in an amount from about 40% to about 70% by weight of the slurry. 
     
     
         22 . The sealant composition of  claim 20  wherein the sealant composition does not form a solid material that cannot yield when subject to pressure or stress in a well bore. 
     
     
         23 . The sealant composition of  claim 20  wherein the sealant composition is introduced into the well bore as a pumpable slurry. 
     
     
         24 . The sealant composition of  claim 20  wherein the binder material at least partially comprises the filler material. 
     
     
         25 . The sealant composition of  claim 20  wherein at least one of the binder material and the filler material is selectively degradable. 
     
     
         26 . The sealant composition of  claim 20  wherein the filler material is selected so that the cohesive sealant is substantially impermeable to at least one fluid selected from the group consisting of an injected fluid, a formation fluid or gas, and a production fluid. 
     
     
         27 . The sealant composition of  claim 20  wherein the filler material is selected so that the cohesive sealant is at least partially permeable to at least one fluid selected from the group consisting of an injected fluid, a formation fluid or gas, and a production fluid. 
     
     
         28 . The sealant composition of  claim 20  wherein the cohesive sealant has a permeability in the range of from about 1 to about 10 −4  miliDarcy. 
     
     
         29 . The sealant composition of  claim 20  wherein the cohesive sealant has a permeability in the range of from about 1 to about 1000 miliDarcy. 
     
     
         30 . The sealant composition of  claim 20  wherein the filler material comprises ilmenite. 
     
     
         31 . The sealant composition of  claim 20  wherein the filler material comprises at least one material selected from the group consisting of sand, barite, calcium carbonate, ground marble, iron oxide, manganese oxide, glass bead, crushed glass, crushed drill cutting, ground vehicle tire, crushed rock, ground asphalt, crushed concrete, crushed cement, salt, ilmenite, hematite, silica flour, fume (amorphous) silica, fly ash, an elastomer, a polymer, diatomaceous earth, a highly swellable clay miner, nitrogen, air, a fiber, and any derivative thereof. 
     
     
         32 . The sealant composition of  claim 20  wherein the filler material comprises at least one polymer selected from the group consisting of natural rubber, acrylate butadiene rubber, polyacrylate rubber, isoprene rubber, chloroprene rubber, butyl rubber, brominated butyl rubber, chlorinated butyl rubber, chlorinated polyethylene, neoprene rubber, styrene butadiene copolymer rubber, sulphonated polyethylene, ethylene acrylate rubber, epichlorohydrin ethylene oxide copolymer, ethylene propylene rubber, ethylene propylene diene terpolymer rubber, ethylene vinyl acetate copolymer, flourosilicone rubber, silicone rubber, poly-2,2, 1-bicycloheptene (polynorborneane), alkylstyrene, crosslinked substituted vinyl acrylate copolymer, nitrile rubber (butadiene acrylonitrile copolymer), hydrogenated nitrile rubber, flouro rubber, perflouro rubber, tetraflouroethylene/propylene, starch polyacrylate acid graft copolymer, polyvinyl alcoholcyclic acid anhydride graft copolymer, isobutylene maleic anhydride, acrylic acid type polymer, vinylacetate-acrylate copolymer, polyethylene oxide polymer, carboxymethyl cellulose polymer, starch-polyacrylonitrile graft copolymer, polymethacrylate, polyacrylamide, non-soluble acrylic polymer, and any derivative thereof. 
     
     
         33 . A sealant composition comprising an aqueous base fluid, a binder material in an amount from about 0.25 % to about 30% by weight of the slurry, and a filler material in an amount from about 40% to about 70% by weight of the slurry, wherein:
 the binder material comprises at least one material selected from the group consisting of fly ash, fume silica, hydrated lime, a pozzolanic material, a cementitious material, and any derivative thereof;   the filler material comprises at least one material selected from the group consisting of sand, barite, calcium carbonate, ground marble, iron oxide, manganese oxide, glass bead, crushed glass, crushed drill cutting, ground vehicle tire, crushed rock, ground asphalt, crushed concrete, crushed cement, salt, ilmenite, hematite, silica flour, fume (amorphous) silica, fly ash, an elastomer, a polymer, diatomaceous earth, a highly swellable clay miner, nitrogen, air, a fiber, and any derivative thereof; and   the sealant composition will form a cohesive sealant.   
     
     
         34 . The sealant composition of  claim 33  wherein the filler material is selected so that the cohesive sealant is substantially impermeable to at least one fluid selected from the group consisting of an injected fluid, a formation fluid or gas, and a production fluid. 
     
     
         35 . The sealant composition of  claim 33  wherein the filler material is selected so that the cohesive sealant is at least partially permeable to at least one fluid selected from the group consisting of an injected fluid, a formation fluid or gas, and a production fluid. 
     
     
         36 . A sealant composition comprising a base fluid, fly ash, hydrated lime, and at least one material selected from the group consisting of sand, barite, calcium carbonate, ground marble, iron oxide, manganese oxide, glass beads, crushed glass, crushed drill cuttings, ground vehicle tire, crushed rock, ground asphalt, crushed concrete, crushed cement, salt, ilmenite, hematite, silica flour, diatomaceous earth, a highly swellable clay miner, and any derivative thereof, wherein the fly ash and hydrated lime together are present in an amount from about 0.25% to about 30% by weight of the slurry. 
     
     
         37 . The sealant composition of  claim 36  wherein the at least one material is ilmenite. 
     
     
         38 . The sealant composition of  claim 37  wherein the ilmenite is present in an amount from about 0.25% to about 30% by weight of the slurry. 
     
     
         39 . The sealant composition of  claim 36  wherein the fly ash and hydrated lime are present in an amount from about 40% to about 70% by weight of the slurry.