Patents by Inventor Rahul Chandrakant Patil
Rahul Chandrakant Patil has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8741818Abstract: An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water.Type: GrantFiled: April 11, 2012Date of Patent: June 3, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Krishna Ravi, Rahul Chandrakant Patil, Sandip Prabhakar Patil, Sairam K S Pindiprolu, Craig W. Roddy, Ricky Covington, Jiten Chatterji, D. Chad Brenneis
-
Patent number: 8741817Abstract: A well treatment composition comprises: an aqueous liquid; a fluid loss additive, wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and an amphiphilic dispersant, wherein the well treatment composition has an activity of at least 10%. A method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set.Type: GrantFiled: July 19, 2012Date of Patent: June 3, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Abhijit Tarafdar, Remitha Ak, Rahul Chandrakant Patil, Vikrant Wagle
-
Patent number: 8720562Abstract: A method of cementing a wellbore comprising preparing a wellbore cementing composition comprising a cementitious materials and a modified biopolymer additive wherein the modified biopolymer additive is the reaction product of a process comprising contacting a biopolymer and an organic carbonate to form a reaction mixture and subjecting the reaction mixture to a temperature of from about 100° F. to about 250° F. and placing the wellbore cementing fluid in the wellbore. A method of cementing a wellbore comprising contacting a modified biopolymer additive with a cementitious slurry to produce a wellbore cementing composition having an initial viscosity, v0; placing the wellbore cementing composition to a desired depth in a subterranean formation wherein the wellbore cementing composition has a transitional viscosity, vt, during placement in the subterranean formation and a final viscosity, vf, at the desired depth wherein vf?vt>v0; and allowing the wellbore cementing composition to set.Type: GrantFiled: October 19, 2010Date of Patent: May 13, 2014Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Rahul Chandrakant Patil, Sandip Pati
-
Publication number: 20140102704Abstract: In an embodiment, a cement composition includes: (i) hydraulic cement, wherein the hydraulic cement has a ratio of CaO to SiO2 in the range of 2.0 to 4.0; and (ii) a water-soluble metaphosphate in a concentration of at least 2.5% bwoc. In another embodiment, a cement composition includes: (i) hydraulic cement, wherein the hydraulic cement has a ratio of CaO to SiO2 of less than 2.0; and (ii) a water-soluble metaphosphate; wherein any alkali nitrate is in a concentration of less than 2% bwoc; and wherein any alkali hydroxide, alkali carbonate, or alkali citrate is in a concentration of less than 0.2% bwoc. Methods of cementing in a well include forming either of such cement compositions and introducing it into the well.Type: ApplicationFiled: June 4, 2013Publication date: April 17, 2014Inventors: Rahul Chandrakant Patil, Sandip Prabhakar Patil, Sohini Bose, Ashok K. Santra, Balasundaram Balaraman
-
Patent number: 8685903Abstract: An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water.Type: GrantFiled: March 21, 2011Date of Patent: April 1, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Krishna Ravi, Rahul Chandrakant Patil, Sandip Prabhakar Patil, Sairam KS Pindiprolu, Craig W. Roddy, Jiten Chatterji, D. Chad Brenneis, Ricky Covington
-
Patent number: 8623135Abstract: A method of cementing in a subterranean formation comprising the steps of: (A) introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) a high-density additive selected from the group consisting of silicon carbide, sintered bauxite, and any combination thereof, wherein the cement composition has a density of at least 16 pounds per gallon; and (B) allowing the cement composition to set. According to an embodiment, the high-density additive is in a concentration of at least 30% by weight of the cement. A cement composition for use in an oil or gas well comprises: (A) cement; (B) water; and (C) a high-density additive selected from the group consisting of silicon carbide, sintered bauxite, and a combination thereof, wherein the high-density additive is in a concentration of at least 30% by weight of the cement, and wherein the cement composition has a density of at least 16 pounds per gallon.Type: GrantFiled: February 7, 2013Date of Patent: January 7, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Rahul Chandrakant Patil, Sandip Prabhakar Patil, Keith Armstrong
-
Patent number: 8598093Abstract: Methods and compositions are provided that may comprise cement, a nano-particle, latex, and water. An embodiment of the present invention includes a method of cementing in a subterranean formation. The method may include introducing a cement composition into the subterranean formation, wherein the cement composition comprises cement, a nano-particle, latex, and water. The method further may include allowing the cement composition to set in the subterranean formation. Another embodiment of the present invention include a cement composition. The cement composition may comprise cement, a nano-particle, latex, and water.Type: GrantFiled: July 9, 2010Date of Patent: December 3, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Jiten Chatterji, Roger Cromwell, Rahul Chandrakant Patil, Abhijit Tarafdar, Abhimanyu Deshpande, Christopher L. Gordon
-
Publication number: 20130284439Abstract: According to an embodiment, a composition is provided that can be used in a cementing. The composition includes at least: (i) a hydraulic cement; and (ii) a copolymer comprising at least the monomeric units (a) through (d) of the following formula: wherein the monomeric units (a) through (d) can be any sequence and any proportion in the copolymer. With water, the composition of the hydraulic cement and such a copolymer becomes a cement composition. According to the method, the cement composition is introduced into a well and allowed to set in the well.Type: ApplicationFiled: April 27, 2012Publication date: October 31, 2013Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Tushar Sureshgir Gosavi, Ramesh Muthusamy, Rahul Chandrakant Patil, Sandip Prabhakar Patil
-
Patent number: 8536101Abstract: A cement composition or method of using the cement composition in a subterranean formation, the composition having: (A) cement; (B) water; and (C) a polymer, wherein the polymer: (i) comprises a monomer or monomers selected from the group consisting of epoxysuccinic acid, a substituted epoxysuccinic acid, and an alkali metal salt, alkaline earth metal salt, or ammonium salt of any of the foregoing, and any combination of any of the foregoing; (ii) has the following characteristics: (a) is water soluble; and (b) is biodegradable; and (iii) is capable of providing: (a) a thickening time of at least 2 hours for a test composition at a temperature of 190° F. and a pressure of 5,160 psi; and (b) an initial setting time of less than 24 hours for the test composition at a temperature of 217° F. and a pressure of 3,000 psi.Type: GrantFiled: March 29, 2012Date of Patent: September 17, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Abhijit Tarafdar, Dibyadarshani Senapati, Girish Dinkar Sarap, Rahul Chandrakant Patil
-
Patent number: 8485255Abstract: A well treatment composition comprises: an aqueous liquid; a fluid loss additive, wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and an amphiphilic dispersant, wherein the well treatment composition has an activity of at least 10%. A method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set.Type: GrantFiled: June 17, 2010Date of Patent: July 16, 2013Assignee: Halliburton Energy Services, IncInventors: Abhijit Tarafdar, Remitha Ak, Rahul Chandrakant Patil, Vikrant Wagle
-
Patent number: 8476203Abstract: Methods and compositions that comprise sub-micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation, wherein the cement composition comprises hydraulic cement, sub-micron alumina, and water. The method further may comprise allowing the cement composition to set in the subterranean formation. Another embodiment includes a cement composition that may comprise hydraulic cement, sub-micron alumina, and water.Type: GrantFiled: January 4, 2010Date of Patent: July 2, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Rahul Chandrakant Patil, B. Raghava Reddy, Abhimanyu Deshpande, Christopher L. Gordon, Craig W. Roddy, Jiten Chatterji, Roger S. Cromwell
-
Publication number: 20130153223Abstract: A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising cement, an aqueous fluid, and a cyclodextrin, a cyclodextrin derivative, or combination thereof; placing the wellbore servicing fluid in the wellbore and allowing the fluid to set. A wellbore servicing fluid comprising cement, aqueous fluid, and a cyclodextrin, cyclodextrin derivative, or combination thereof.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ramesh MUTHUSAMY, Rahul Chandrakant PATIL, Sohini BOSE, Pranjal SARMAH, B. Raghava REDDY
-
Publication number: 20120325478Abstract: The present invention relates to cement compositions and their use in cementing operations. The cements comprise an aluminosilicate; a sodium aluminate, a calcium aluminate, a potassium aluminate, or a combination thereof; and water. In some cases the cement does not include Portland cement. The cement may be used in a subterranean formation having corrosive components therein, wherein the set cement sheath is resistant to degradation from the corrosive components within the subterranean formation.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Applicant: Halliburton Energy Services, Inc.Inventors: Ramesh Muthusamy, Tushar Sureshgiri Gosavi, Rahul Chandrakant Patil, Ashok K. Santra, Sandip Prabhakar Patil, Kameswara Sri Sairam Pindiprolu
-
Patent number: 8327938Abstract: Compositions and methods according to the invention are directed to a cement composition for use in a subterranean formation. The cement composition comprises: (A) cement; (B) water; and (C) a polymer, wherein the polymer: (i) comprises a monomer or monomers selected from the group consisting of epoxysuccinic acid, a substituted epoxysuccinic acid, and an alkali metal salt, alkaline earth metal salt, or ammonium salt of any of the foregoing, and any combination of any of the foregoing; (ii) has the following characteristics: (a) is water soluble; and (b) is biodegradable; and (iii) is capable of providing: (a) a thickening time of at least 2 hours for a test composition at a temperature of 190° F. and a pressure of 5,160 psi; and (b) an initial setting time of less than 24 hours for the test composition at a temperature of 217° F. and a pressure of 3,000 psi, wherein the test composition consists of 860 grams of Class-H Portland cement, 325 grams of deionized water, and 0.Type: GrantFiled: February 24, 2010Date of Patent: December 11, 2012Assignee: Halliburton Energy Services Incs.Inventors: Abhijit Tarafdar, Dibyadarshani Senapati, Girish Dinkar Sarap, Rahul Chandrakant Patil
-
Publication number: 20120305248Abstract: According to an embodiment, a drilling fluid comprises: water and a set accelerator, wherein the drilling fluid has a 10 minute gel strength of less than 20 lb*ft/100 sq ft, wherein the drilling fluid has a density in the range of about 9 to about 14 pounds per gallon, wherein the drilling fluid remains pourable for at least 5 days, and wherein when at least one part of the drilling fluid mixes with three parts of a cement composition consisting of water and cement, the drilling fluid cement composition mixture develops a compressive strength of at least 1,200 psi. According to another embodiment, a method of using the drilling fluid comprises the steps of: introducing the drilling fluid into at least a portion of a subterranean formation, wherein at least a portion of the drilling fluid is capable of mixing with a cement composition.Type: ApplicationFiled: June 1, 2011Publication date: December 6, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Krishna M. RAVI, Donald L. WHITFILL, Rahul Chandrakant PATIL, Abhimanyu DESHPANDE
-
Publication number: 20120283152Abstract: A well treatment composition comprises: an aqueous liquid; a fluid loss additive, wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and an amphiphilic dispersant, wherein the well treatment composition has an activity of at least 10%. A method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set.Type: ApplicationFiled: July 19, 2012Publication date: November 8, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Abhijit TARAFDAR, Remitha AK, Rahul Chandrakant PATIL, Vikrant WAGLE
-
Publication number: 20120196954Abstract: A cement composition or method of using the cement composition in a subterranean formation, the composition having: (A) cement; (B) water; and (C) a polymer, wherein the polymer: (i) comprises a monomer or monomers selected from the group consisting of epoxysuccinic acid, a substituted epoxysuccinic acid, and an alkali metal salt, alkaline earth metal salt, or ammonium salt of any of the foregoing, and any combination of any of the foregoing; (ii) has the following characteristics: (a) is water soluble; and (b) is biodegradable; and (iii) is capable of providing: (a) a thickening time of at least 2 hours for a test composition at a temperature of 190° F. and a pressure of 5,160 psi; and (b) an initial setting time of less than 24 hours for the test composition at a temperature of 217° F. and a pressure of 3,000 psi.Type: ApplicationFiled: March 29, 2012Publication date: August 2, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Abhijit Tarafdar, Dibyadarshani Senapati, Girish Dinkar Sarap, Rahul Chandrakant Patil
-
Publication number: 20120192768Abstract: An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water.Type: ApplicationFiled: April 11, 2012Publication date: August 2, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Krishna Ravi, Rahul Chandrakant Patil, Sandip Prabhakar Patil, Sairam KS Pindiprolu, Craig Roddy, Ricky Convington, Jiten Chatterji, D. Chad Brenneis
-
Publication number: 20120190769Abstract: Methods and compositions that comprise sub-micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation, wherein the cement composition comprises hydraulic cement, sub-micron alumina, and water. The method further may comprise allowing the cement composition to set in the subterranean formation. Another embodiment includes a cement composition that may comprise hydraulic cement, sub-micron alumina, and water.Type: ApplicationFiled: March 30, 2012Publication date: July 26, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Rahul Chandrakant Patil, B. Raghava Reddy, Abhimanyu Deshpande, Christopher L. Gordon, Craig W. Roddy, Jiten Chatterji, Roger S. Cromwell
-
Publication number: 20120152540Abstract: According to an embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, wherein the cement composition comprises: cement; water; and calcium silicate hydrate (C—S—H) seeds, wherein a test cement composition consisting essentially of: the cement; the water; and the C—S—H seeds, and in the same proportions as in the cement composition, develops a compressive strength of at least 1,200 psi (8.3 MPa) when tested at 24 hours, a temperature of 60° F. (15.6° C.), and a pressure of 3,000 psi (20.7 MPa); and allowing the cement composition to set. According to another embodiment, the C—S—H seeds are mesoscopic particles, nanoparticles, or combinations thereof, and wherein the C—S—H seeds are in a concentration in the range of about 1% to about 5% by weight of the cement.Type: ApplicationFiled: July 12, 2011Publication date: June 21, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Rahul Chandrakant PATIL, Trissa JOSEPH, Abhimanyu DESHPANDE, Vineet SATHE