Patents by Inventor Bharat B. Patel
Bharat B. Patel 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).
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Publication number: 20100222240Abstract: A non-aqueous wellbore servicing fluid comprising an alpha-olefin homopolymer grafted with a polar monomer.Type: ApplicationFiled: May 12, 2010Publication date: September 2, 2010Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Bharat B. PATEL, Olusegun M. FALANA
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Patent number: 7741250Abstract: A non-aqueous wellbore servicing fluid comprising an alpha-olefin homopolymer grafted with a polar monomer.Type: GrantFiled: May 11, 2006Date of Patent: June 22, 2010Assignee: Chevron Phillips Chemical Company LPInventors: Bharat B. Patel, Olusegun M. Falana
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Publication number: 20090145809Abstract: A method of removing bitumen from tar sands comprising contacting the tar sands with a first mixture comprising a petroleum distillate and an oxygenated solvent, and recovering a second mixture comprising (a) at least a portion of the petroleum distillate and oxygenated solvent from the first mixture, (b) bitumen and (c) sand having a reduced amount of bitumen.Type: ApplicationFiled: December 10, 2007Publication date: June 11, 2009Applicant: Chevron Phillips Chemical Company LPInventors: Sam B. Ledbetter, JR., Marshall D. Bishop, Bharat B. Patel
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Patent number: 7196039Abstract: Methods of reducing the fluid loss from a wellbore servicing fluid include combining a terpolymer with the wellbore servicing fluid to reduce the fluid loss from the fluid, followed by displacing the fluid into a wellbore. In an embodiment, the following monomers are used to make the terpolymer: from about 75 wt. % to about 95 wt. % of 2-acrylamido-2-methylpropanesulfonic acid or an alkali salt thereof; from about 3 wt. % to about 15 wt. % of acrylamide; and from about 3 wt. % to about 15 wt. % of N-vinyl-2-pyrrolidone, all weight percentages being based on a total weight of the monomers. The wellbore servicing fluid may comprise water or an aqueous salt solution such as a formate solution. The wellbore servicing fluid may also comprise clay such as montmorillonite and attapulgite clay.Type: GrantFiled: December 11, 2003Date of Patent: March 27, 2007Assignee: Chevron Philips Chemical Company LPInventor: Bharat B. Patel
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Patent number: 7169739Abstract: Methods of reducing sag include combining a cystol ester compound with a non-aqueous fluid and particles to reduce sag in the resulting fluid composition without significantly increasing the viscosity of the fluid composition. The fluid composition CONTAINS the non-aqueous fluid, the particles, and the cystol ester compound. Suitable cystol ester compounds include cystol ester and derivatives of cystol ester having mono-, di-, or tri-substituted aromatic compounds as substituents. The non-aqueous fluid may CONTAINS an invert emulsion, diesel oil, mineral oil, an olefin, an organic ester, a synthetic fluid, or combinations thereof. Further, the fluid composition may be used as a wellbore servicing fluid such as a drilling fluid. The particles may CONTAINS a weighting agent, e.g., barite, galena, hematite, dolomite, calcite, or combinations thereof. The fluid composition may also include organophilic clay.Type: GrantFiled: January 26, 2004Date of Patent: January 30, 2007Assignee: Chevron Phillips Chemical Company LPInventors: Olusegun M. Falana, Bharat B. Patel, Wayne S. Stewart
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Patent number: 6730637Abstract: This invention relates to a low toxicity drilling mud oil. In some embodiments, the fluid loss characteristic of the drilling mud oil as used in a borehole can be reduced to less than 0.2 ml/30 minutes by adding about 0.05% to about 2.0% by weight of a butadiene-styrene-butadiene (BSB) block copolymer having about 20% by weight or more styrene.Type: GrantFiled: December 6, 2002Date of Patent: May 4, 2004Assignee: Chevron Phillips Chemical Company, LPInventors: Wayne S. Stewart, Nathan E. Stacy, Kelly B. Fox, Bharat B. Patel, Sam B. Ledbetter, Alvin Evans
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Patent number: 6547710Abstract: A sulfonated, oxidized rubber composition and a neutralized, sulfonated, oxidized rubber composition are provided. The sulfonated, oxidized rubber composition, preferably a composition containing such sulfonated, oxidized rubber composition, can be used as an additive in or for asphalt. The neutralized, sulfonated, oxidized rubber composition, preferably a composition comprising such neutralized, sulfonated, oxidized rubber composition, can be used for oil field applications such as preventing the loss of fluids used during such oil field applications. A process of preparing such compositions includes contacting a rubber composition, such as butyl rubber in the form of waste tire particles, with an oxidizing agent to provide an oxidized rubber composition. The oxidized rubber composition is then contacted with a sulfur-containing acid to provide a sulfonated, oxidized rubber composition.Type: GrantFiled: November 14, 2000Date of Patent: April 15, 2003Assignee: ConocoPhillips CompanyInventors: Bharat B. Patel, Marshall D. Bishop
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Patent number: 6124245Abstract: A composition is provided which comprises a polymer comprising repeat units derived from an unsaturated amide, an N-vinyl lactam, and optionally, a vinyl acid. Also provided is a water-based fluid composition which can be used as drilling fluid wherein the composition comprises calcium chloride and the polymer. Further providing is a process for using a water-based fluid wherein the process comprises contacting a subterranean formation with the water-based fluid composition disclosed above to effect the control of fluid loss of the water-based fluid composition.Type: GrantFiled: October 7, 1998Date of Patent: September 26, 2000Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel
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Patent number: 5925182Abstract: A stable liquid suspension composition comprising a liquid carrier, a solid fatty acid or a salt thereof, and a solid particulate is disclosed wherein said liquid carrier is selected from the group consisting of oils, olefins, terpenes, glycols, esters, ethers, alcohols, and combinations of any two or more thereof and said liquid carrier, solid fatty acid or salt thereof, and solid particulate are each present in said composition in a stabilizing amount sufficient to produce a stable liquid suspension. Also disclosed is a stable liquid composition comprising a liquid carrier, an oil-soluble polymer, and a solid particulate wherein said liquid carrier is selected from the group consisting of olefins, terpenes, esters, and combinations of any two or more thereof and said liquid carrier, oil-soluble polymer, and solid particulate are each present in said composition in a stabilizing amount sufficient to effect the formation of a stable liquid suspension.Type: GrantFiled: July 16, 1998Date of Patent: July 20, 1999Assignee: Phillips Petroleum CompanyInventors: Bharat B. Patel, Marshall D. Bishop
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Patent number: 5922653Abstract: A composition and a process for using the composition for applications in a subterranean formation are provided. The composition comprises a clay, a polymer, and a liquid. The polymer comprises repeat units derived from a nitrogen-containing olefinic monomer and optionally an olefinic comonomer. The composition can be used as or in drilling fluids, workover fluids, completion fluids, or combinations of any two or more thereof.Type: GrantFiled: October 3, 1996Date of Patent: July 13, 1999Assignee: Phillips Petroleum CompanyInventors: Iqbal Ahmed, Ahmad Moradi-Araghi, Bharat B. Patel, Wayne S. Stewart
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Patent number: 5834533Abstract: A stable liquid suspension composition comprising a liquid carrier, a solid fatty acid or a salt thereof, and a solid particulate is disclosed wherein said liquid carrier is selected from the group consisting of oils, olefins, terpenes, glycols, esters, ethers, alcohols, and combinations of any two or more thereof and said liquid carrier, solid fatty acid or salt thereof, and solid particulate are each present in said composition in a stabilizing amount sufficient to produce a stable liquid suspension. Also disclosed is a stable liquid composition comprising a liquid carrier, an oil-soluble polymer, and a solid particulate wherein said liquid carrier is selected from the group consisting of liquid alkenes, terpenes, esters, and combinations of any two or more thereof and said liquid carrier, oil-soluble polymer, and solid particulate are each present in said composition in a stabilizing amount sufficient to effect the formation of a stable liquid suspension.Type: GrantFiled: November 20, 1996Date of Patent: November 10, 1998Assignee: Phillips Petroleum CompanyInventors: Bharat B. Patel, Marshall D. Bishop
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Patent number: 5693698Abstract: A composition is provided which comprises an acrylamide-containing polymer comprising repeat units derived from at least two monomers, a polypropylene glycol, and optionally, a polysaccharide. Also provided is a water-based composition which can be used as drilling fluid wherein the composition comprises calcium chloride, an acrylamide-containing polymer which has repeat units derived from at least two monomers, a polypropylene glycol, and optionally, a polysaccharide.Type: GrantFiled: May 30, 1995Date of Patent: December 2, 1997Assignee: Phillips Petroleum CompanyInventors: Bharat B. Patel, T. George Muller
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Patent number: 5684075Abstract: A composition is provided which comprises an acrylamide-containing polymer comprising repeat units derived from at least two monomers, a polypropylene glycol, and optionally, a polysaccharide. Also provided is a water-based composition which can be used as drilling fluid wherein the composition comprises calcium chloride, an acrylamide-containing polymer which has repeat units derived from at least two monomers, a polypropylene glycol, and optionally, a polysaccharide.Type: GrantFiled: February 21, 1995Date of Patent: November 4, 1997Assignee: Phillips Petroleum CompanyInventors: Bharat B. Patel, T. George Muller
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Patent number: 5637635Abstract: The present invention provides a water dispersible particulate polymer composition having improved water dispersibility comprising a water soluble particulate polymer which has been contacted with a finely divided particulate dispersant comprised of at least one insoluble or sparingly soluble fatty acid or salt thereof so that the particles of the water soluble particulate polymer have dispersed thereon said finely divided particulate dispersant, a method for making said water soluble particulate polymer composition, and the use thereof in viscosifying water-based fluids.Type: GrantFiled: November 9, 1994Date of Patent: June 10, 1997Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel
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Patent number: 5610124Abstract: This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.Type: GrantFiled: November 9, 1994Date of Patent: March 11, 1997Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel
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Patent number: 5576271Abstract: A composition useful for viscosifying a water-based fluid is provided which comprises a polymer such as guar gum, a metal compound such as an aluminum compound. The composition can also contain a polymer such as guar gum, a magnesium compound such as magnesium oxide, a metal aluminate such as sodium aluminate or a metal compound such as an aluminum compound, and optionally a fatty acid or salts thereof. The water-based fluid can also contain a clay such as bentonite. A process for viscosifying a water-based fluid and for substantially retaining the viscosity of the water-based fluid is also provided which comprises contacting the fluid with the composition described herein. Also disclosed is a process for controlling water loss of a water-based drilling fluid wherein the process comprises contacting the fluid with the composition described herein.Type: GrantFiled: August 31, 1994Date of Patent: November 19, 1996Assignee: Phillips Petroleum CompayInventor: Bharat B. Patel
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Patent number: 5532212Abstract: A composition useful for viscosifying a water-based fluid is provided which comprises a metal aluminate such as sodium aluminate, or a blend of a viscosity promoter such as sodium aluminate and a magnesium compound such as magnesium oxide, or a clay such as bentonite and the blend. The water-based fluid can also contain a clay such as bentonite. A process for viscosifying a water-based fluid is also provided which comprises contacting the fluid with the composition described herein. Also disclosed is a process for controlling water loss of a water-based drilling fluid wherein the process comprises contacting the fluid with the composition described herein.Type: GrantFiled: September 27, 1995Date of Patent: July 2, 1996Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel
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Patent number: 5502030Abstract: A process for preparing a fluid additive comprises (1) mixing a viscosifier such as a water-soluble polymer with water to form a viscosified water; (2) contacting a glycol-based polymer with the viscosified water followed by mixing to prepare a glycol-viscosified water mixture; and (3) contacting at least one sulfonated asphalt with the glycol-viscosified water mixture wherein the fluid additive comprises water, a viscosifier, a glycol-based polymer, and at least one sulfonated asphalt. Also disclosed is a process for using the fluid additive in drilling applications.Type: GrantFiled: October 18, 1993Date of Patent: March 26, 1996Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel
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Patent number: 5401718Abstract: This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.Type: GrantFiled: November 24, 1992Date of Patent: March 28, 1995Inventor: Bharat B. Patel
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Patent number: 5399548Abstract: A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin, a modified lignite and sodium lignosulfonate; a second component being a polymer prepared from acrylic acid; and a third component being a metal compound selected from the group of metals including iron, tin, chromium, manganese, titanium, aluminum and zinc.Type: GrantFiled: November 16, 1992Date of Patent: March 21, 1995Assignee: Phillips Petroleum CompanyInventor: Bharat B. Patel