DUCTILE CEMENTING MATERIALS AND THE USE THEREOF IN HIGH STRESS CEMENTING APPLICATIONS
A method of cementing a wellbore penetrating a subterranean formation comprises: injecting into the wellbore a cementing composition comprising: a ductility modifying agent comprising one or more of the following: an ionomer; a functionalized carbon; a metallic fiber; or a polymeric fiber; a cementitious material; an aggregate; and an aqueous carrier.
1 . A method of cementing a wellbore penetrating a subterranean formation, the method comprising:
injecting into the wellbore a cementing composition comprising:
a ductility modifying agent comprising one or more of the following: an ionomer; a functionalized filler; a metallic fiber; or a polymeric fiber; the functionalized filler comprising one or more of the following: functionalized carbon;
functionalized clay; functionalized silica; functionalized alumina; functionalized zirconia; functionalized titanium dioxide; functionalized silsesquioxane;
functionalized halloysite; or functionalized boron nitride;
a cementitious material;
an aggregate; and
an aqueous carrier.
2 . The method of claim 1 , wherein the metallic fiber comprises steel fiber or iron fiber.
3 . The method of claim 1 , wherein the polymeric fiber comprises one or more of the following: polyvinyl alcohol fiber; polyethylene fiber; polypropylene fiber; polyethylene glycol fibers, or poly(ethylene glycol)-poly(ester-carbonate) fibers.
4 . The method of claim 1 , wherein the ionomer comprises a polymer backbone formed from one or more of the following monomers: an acid anhydride based monomer; an ethylenically unsaturated sulfonic acid; an ethylenically unsaturated phosphoric acid; an ethylenically unsaturated carboxylic acid; a monoester of an ethylenically unsaturated dicarboxylic acid; ethylene; propylene; butylene; butadiene; styrene; vinyl acetate; or (meth)acrylate; and wherein the ionomer comprises one or more of the following functional groups: a sulfonate group, a phosphonate group, a carboxylate group, a carboxyl group, a sulfonic acid group, or a phosphonic acid group.
5 . The method of claim 1 , wherein the ductility modifying agent comprises both the functionalized filler and the ionomer.
6 . The method of claim 1 , wherein the functionalized filler comprises one or more of the following functional groups: a sulfonate group, a phosphonate group, a carboxylate group, a carboxyl group, a sulfonic acid group, or a phosphonic acid group.
7 . The method of claim 1 , wherein the cementitious material comprises one or more of the following: Portland cement; pozzolan cement; gypsum cement; high alumina content cement; silica cement; or high alkalinity cement.
8 . The method of claim 1 , wherein the cementing composition further comprises, based on the total weight of the cementing composition, about 0.1 to about 10 wt. % of a stabilizing agent effective to stabilize the functionalized filler in the aqueous carrier, the stabilizer comprising a surfactant, a surface-active particle, or a combination comprising at least one of the foregoing.
9 . The method of claim 1 , wherein the cementing composition further comprises an additive which comprises a reinforcing agent, a self-healing additive, a fluid loss control agent, a weighting agent, an extender, a foaming agent, a dispersant, a thixotropic agent, a bridging agent or lost circulation material, a clay stabilizer, or a combination comprising at least one of the foregoing.
10 . The method of claim 1 , wherein the cementing composition remains pumpable at wellbore conditions until setting.
11 . The method of claim 1 , wherein the cementing composition comprises solids in an amount of about 50 wt. % to about 95 wt. % based on the total weight of the cementing composition.
12 . The method of claim 1 , wherein the cementing composition comprises about 0.5 wt. % to about 10 wt. % of the ductility modifying agent based on the total weight of the cementing composition.
13 . The method of claim 1 , wherein injecting the cementing composition comprises pumping the cementing composition in a tubular in the wellbore.
14 . The method of claim 1 , wherein injecting the cementing composition comprises pumping the cementing composition into an annulus between a tubular and a wall of the wellbore via the tubular.
15 . The method of claim 1 , further comprising allowing the cementing composition to set.
16 . The method of claim 15 , wherein allowing the cementing composition to set comprises crosslinking metal ions present in the cementing composition with the ionomer, the functionalized carbon, or a combination comprising at least one of the foregoing.
17 . The method of claim 15 , wherein the cementing composition is set at a temperature of about 50 to about 450 and a pressure of about 1,000 to about 50,000 in about 0.5 hours to about 24 hours.
18 . The method of claim 15 , further comprising subjecting a set cementing composition to a temperature of about 150° F. to about 1,000° F. and a pressure of about 100 psi to about 10,000 psi for about 30 minutes to about one week.
19 . A cementing composition comprising:
a cementitious material;
an ionomer;
a functionalized filler;
an aggregate; and
an aqueous carrier.
20 . The cementing composition of claim 19 further comprising, based on the total weight of the cementing composition, about 0.1 to about 10 wt. % of a stabilizing agent effective to stabilize the functionalized filler in the aqueous carrier, the stabilizer comprising a surfactant, a surface-active particle, or a combination comprising at least one of the foregoing.
21 . The cementing composition of claim 19 , wherein the ionomer comprises a polymer backbone formed from one or more of the following monomers: an acid anhydride based monomer; an ethylenically unsaturated sulfonic acid; an ethylenically unsaturated phosphoric acid; an ethylenically unsaturated carboxylic acid; a monoester of an ethylenically unsaturated dicarboxylic acid; ethylene; propylene; butylene; butadiene; styrene; vinyl acetate; or (meth)acrylate; and wherein the ionomer comprises one or more of the following functional groups: a sulfonate group, a phosphonate group, a carboxylate group, a carboxyl group, a sulfonic acid group, or a phosphonic acid group.
22 . The cementing composition of claim 19 , wherein the functionalized filler has one or more of the following functional groups: a sulfonate group, a phosphonate group, a carboxylate group, a carboxyl group, a sulfonic acid group, or a phosphonic acid group.
23 . The cementing composition of claim 22 , wherein the functionalized filler comprises functionalized carbon nanotubes.
24 . The cementing composition of claim 19 , wherein the ionomer is present in an amount of about 0.1 to about 10; and the functionalized carbon is present in an amount of about 0.1 to about 10, each based on the total weight of the cementing composition.
25 . The cementing composition of claim 19 , wherein the cementitious material comprises one or more of the following: Portland cement; pozzolan cement; gypsum cement; high alumina content cement; silica cement; or high alkalinity cement.
26 . The cementing composition of claim 21 , comprising solids in an amount of about 50 wt. % to about 95 wt. % based on the total weight of the cementing composition.