Wellbore servicing compositions comprising a fluid loss agent and methods of making and using same
A method of servicing a wellbore comprising preparing a composition comprising a calcium aluminate cement, water, and a fluid loss additive wherein the fluid loss additive comprises an acid gelling polymer, placing the composition in the wellbore, and allowing the composition to set. A method of servicing a wellbore comprising placing into a wellbore having a bottom hole static temperature of greater than about 50° F. and/or a pH of from about 3 to about 9 a cement slurry comprising a calcium aluminate cement having an aluminum oxide content of greater than about 60 wt. % based on the total weight of the calcium aluminate cement and an acid-gelling polymer wherein the cement slurry has a fluid loss at 10 cc/10 min. to about 600 cc/30 min.
1. A method of servicing a wellbore comprising:
preparing a composition comprising a calcium aluminate cement, water, and a fluid loss additive, wherein the calcium aluminate cement comprises aluminum oxide in an amount of greater than about 60 wt. % based on a total weight of the calcium aluminate cement and wherein the fluid loss additive comprises an acid gelling polymer;
placing the composition in the wellbore; and
allowing the composition to set, wherein the composition has a fluid loss of from about 10 cc/10 min. to about 600 cc/30 min. at a temperature of from about 50° F. to about 500° F.
2. The method of claim 1 wherein the calcium aluminate cement has an aluminum oxide:calcium oxide ratio of from about 1:1 to about 4:1.
3. The method of claim 1 wherein the composition has a pH in a range of from about 3 to about 9.
4. The method of claim 1 wherein the calcium aluminate cement is present in the composition in an amount of from about 20 wt. % to about 99 wt. % based on a total weight of the composition.
5. The method of claim 1 wherein the acid gelling polymer increases a viscosity of an acidic fluid by equal to or greater than about 100 cP when the acid gelling polymer is present in an amount of about 1 wt. % of the acidic fluid and the acid in the acidic fluid is at a concentration of about 5 wt. %.
6. The method of claim 5 wherein the acidic fluid comprises hydrochloric acid, hydrofluoric acid, acetic acid, formic acid, citric acid, ethylenediaminetetraacetic acid (EDTA), glycolic acid, sulfamic acid, or combinations thereof.
7. The method of claim 1 wherein the acid-gelling polymer comprises a biopolymer.
8. The method of claim 7 wherein the biopolymer comprises a helical polysaccharide, diutan, scleroglucan, xanthan or combinations thereof.
9. The method of claim 1 wherein the acid gelling polymer comprises a mixture of guar or cellulose, and crosslinking agent.
10. The method of claim 7 wherein the biopolymer has a molecular weight of from about 100,000 Daltons to about 10,000,000 Daltons.
11. The method of claim 1 wherein the acid-gelling polymer comprises a synthetic polymer.
12. The method of claim 11 wherein the synthetic polymer comprises copolymers of acrylamide and 2-acrylamido-2-methylpropane sulfonic acid (AMPS); copolymers of acrylamide and acrylic acid; copolymers of acrylamide and trimethylaminoethylmethacrylate chloride; copolymers of acrylamide and trimethylaminoethylmethacrylate sulfate; copolymers of acrylamide and trimethyaminoacrylate chloride; copolymers of acrylamide and trimethylaminoacrylate sulfate; copolymers of AMPS and dimethylaminoethyl methacrylate (DMAEMA); N-vinylpyrrolidone/AMPS copolymers; terpolymers of acrylamide, 2-acrylamido-2-methylpropane sulfonic acid and acrylic acid; terpolymers of acrylamide, acrylic acid and trimethylaminoethylamethacrylate chloride; terpolymers of acrylamide, acrylic acid and trimethylaminoethylmethacrylate sulfate; terpolymers of acrylamide, acrylic acid and trimethylaminoethylacrylate chloride; terpolymers of acrylamide, acrylic acid and trimethylaminoethylacrylate sulfate; or combinations thereof.
13. The method of claim 12 wherein the synthetic polymer has a molecular weight of greater than about 1×10 6 Daltons.
14. The method of claim 1 wherein the fluid loss additive is present in the composition in an amount of from about 0.05 wt. % to about 3 wt. % based upon weight of the calcium aluminate cement.
15. The method of claim 1 wherein the composition further comprises a set retarder.
16. The method of claim 15 wherein the set retarder comprises organic acids, alkali metal salts of organic acid, tartaric acid, citric acid, oxalic acid, gluconic acid, oleic acid, uric acid, ethylenediaminetetraacetic acid (EDTA), sodium citrate, or combinations thereof.
17. The method of claim 1 wherein the composition further comprises a fluid loss control enhancer.
18. The method of claim 17 wherein the fluid loss control enhancer comprises acidic materials which lower a pH of a slurry, materials which buffer the pH of the slurry at desired pH values, alkali or alkaline earth metal salts, or combinations thereof.
19. The method of claim 1 wherein the composition excludes a Portland cement, a Sorel cement, or both.
20. A method of servicing a wellbore comprising;
placing into a wellbore having a bottom hole static temperature of greater than about 50° F., a pH of from about 3 to about 9, or both; a cement slurry comprising a calcium aluminate cement having an aluminum oxide content of greater than about 60 wt. % based on a total weight of the calcium aluminate cement; and a fluid loss additive consisting essentially of an acid-gelling polymer wherein the cement slurry has a fluid loss ranging from about 10 cc/10 min. to about 600 cc/30 min.
21. The method of claim 20 wherein the acid gelling polymer increases a viscosity of an acidic fluid by equal to or greater than about 100 cP when the acid gelling polymer is present in an amount of about 1 wt. % of the acidic fluid and the acid in the acidic fluid is at a concentration of about 5 wt. %.
22. The method of claim 20 wherein the cement slurry further comprises a fluid loss control enhancer.
23. The method of claim 22 wherein the fluid loss control enhancer is selected from the group consisting of a metal halide retarder, an organic acid retarder, and combinations thereof.