# US 9,751,803 B2 · Calcium phosphate cement compositions comprising pumice and/or perlite and associated methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,803 B2 - Document ID: US9751803B2 - Status: Granted - Kind: B2 - Application number: 15/298,793 - Filed: 2016-10-20 - Published: 2017-02-09 - Granted: 2017-09-05 - Earliest claimed: 2011-11-21 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Jeffery D. Karcher; D. Chad Brenneis; Lance E. Brothers - Web page: https://patentgrep.com/patent/US9751803B2 ## CPC - C04B 14/185: {expanded} - C04B 14/16: porous, e.g. pumice - C04B 14/18: Perlite - C04B 28/00: Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements - C04B 28/06: Aluminous cements (monolithic refractories or refractory mortars C04B35/66) - C04B 28/34: containing cold phosphate binders - C04B 28/344: {the phosphate binder being present in the starting composition solely as one or more phosphates} - C09K 8/46: containing inorganic binders, e.g. Portland cement - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE ## Abstract Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash. ## Claims ### Claim 1 A cement composition comprising: calcium aluminate in an amount of about 15% to about 50% by weight of the cement composition; sodium polyphosphate in an amount of about 1% to about 20% by weight of the cement composition; perlite, wherein the perlite has a mean particle size of about 1 micron to about 100 microns; and water. ### Claim 2 (depends on 1) The composition of claim 1 wherein the calcium aluminate is present in an amount of about 20% to about 40% by weight of the cement composition. ### Claim 3 (depends on 1) The composition of claim 1 wherein the sodium polyphosphate comprises a polyphosphate selected from the group consisting of sodium hexametaphosphate, sodium triphosphate, a vitreous sodium phosphate, and any combination thereof. ### Claim 4 (depends on 1) The composition of claim 1 wherein the sodium polyphosphate is present in an amount of about 2% to about 20% by weight of the cement composition. ### Claim 5 (depends on 1) The composition of claim 1 wherein cement composition further comprises pumice. ### Claim 6 (depends on 5) The composition of claim 5 wherein the pumice has a mean particle size of about 0.01 microns to about 2,000 microns. ### Claim 7 (depends on 5) The composition of claim 5 wherein the pumice has a mean particle size of less than about 15 microns. ### Claim 8 (depends on 5) The composition of claim 5 wherein the pumice is present in an amount of about 15% to about 60% by weight of the cement composition. ### Claim 9 (depends on 1) The composition of claim 1 wherein the perlite comprises expanded perlite. ### Claim 10 (depends on 1) The composition of claim 1 wherein the perlite comprises unexpanded perlite. ### Claim 11 (depends on 1) The composition of claim 1 wherein the perlite comprises unexpanded perlite in an amount of about 15% to about 60% by weight of the cement composition. ### Claim 12 (depends on 1) The composition of claim 1 wherein the perlite is present in an amount of about 15% to about 60% by weight of the cement composition. ### Claim 13 (depends on 1) The composition of claim 1 wherein the perlite is present in an amount of about 15% to about 50% by weight of the cement composition, and wherein the cement composition further comprises pumice. ### Claim 14 (depends on 1) The composition of claim 1 wherein cement composition further comprises an additive selected from the group consisting of an expansive additive, a set retarder, a foaming agent, a foam stabilizer, a set accelerator, a surfactant, a fluid loss control additive, a weighting agent, a lightweight additive, a dispersant, an elastic particle, a gas-generating additive, a lost circulation material, a defoaming additive, an extending additive, and any combination thereof. ### Claim 15 (depends on 1) The composition of claim 1 wherein the cement composition is essentially free of fly ash. ### Claim 16 A cement composition comprising: calcium aluminate in an amount of about 15% to about 60% by weight of the cement composition; sodium polyphosphate in an amount of about 2% to about 20% by weight of the cement composition; perlite in an amount of about 15% to about 50% by weight of the cement composition, wherein the perlite has a mean particle size of about 1 micron to about 100 microns; a cement set retarder; and water. ### Claim 17 (depends on 16) The composition of claim 16 wherein the calcium aluminate is present in an amount of about 15% to about 45% by weight of the cement composition, wherein the sodium polyphosphate is present in an amount of about 2% to about 10% by weight of the cement composition, and wherein the cement composition is essentially free of fly ash. ### Claim 18 (depends on 16) The composition of claim 16 wherein the sodium polyphosphate comprises a polyphosphate selected from the group consisting of sodium hexametaphosphate, sodium triphosphate, a vitreous sodium phosphate, and any combination thereof. ### Claim 19 (depends on 16) The composition of claim 16 wherein the cement set retarder is present in an amount up to about 2% by weight of the cement composition. ### Claim 20 (depends on 16) The composition of claim 16 wherein cement composition further comprises an additive selected from the group consisting of an expansive additive, a foaming agent, a foam stabilizer, a set accelerator, a surfactant, a fluid loss control additive, a weighting agent, a lightweight additive, a dispersant, an elastic particle, a gas-generating additive, a lost circulation material, a defoaming additive, an extending additive, and any combination thereof, wherein the cement composition has a density in the range of from about 4 lb/gal to about 20 lb/gal.