Patents by Inventor Keith W. Sharp
Keith W. Sharp 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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Patent number: 8932998Abstract: A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.Type: GrantFiled: October 5, 2009Date of Patent: January 13, 2015Assignee: Baker Hughes IncorporatedInventors: Jinguo Zhang, Paul H. Javora, Keith W. Sharp
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Publication number: 20110082057Abstract: A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Inventors: Jinguo ZHANG, Paul H. Javora, Keith W. Sharp
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Patent number: 6143698Abstract: A method for removing filtercake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filtercake having an oxidation-degradable component, preferably a polysaccharide. The filtercake is contacted with a clear brine containing bromine or bromate generating agents to degrade the polymers within the filtercake. The brine contains bromide salts and an oxidant capable of delayed oxidation of the bromide to bromine at downhole conditions.Type: GrantFiled: December 4, 1998Date of Patent: November 7, 2000Assignee: Tetra Technologies, Inc.Inventors: Joseph R. Murphey, Jeffrey S. McKennis, Keith W. Sharp
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Patent number: 6004386Abstract: Apparatus for creating gas-liquid interfacial contact conditions for highly efficient mass transfer between gas and liquid includes a gas-liquid contactor assembly including a hollow porous tube surrounded by an outer jacket defining a gas plenum between the jacket and the porous tube; a liquid feed assembly including a nozzle for injecting liquid into the porous tube in a spiraling flow pattern around and along the porous tube; a gas-liquid separator assembly at the first end of the porous tube including a nonporous degassing tube coaxially aligned with and connected to the porous tube, a gas outlet port coaxially aligned with the degassing tube to receive a first portion of gas flowing from the degassing tube, a first gas duct coaxially aligned with and connected to the gas outlet duct to convey the first portion of gas therefrom; and a liquid collection assembly. A second gas discharge assembly to collect and convey gas from the first end of the porous tube is also disclosed.Type: GrantFiled: August 29, 1997Date of Patent: December 21, 1999Assignee: RevTech Industries, Inc.Inventors: Thomas L. Grisham, Janet K. Peters, Keith W. Sharp, Edward E. Ebel
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Patent number: 5730875Abstract: A method of optimizing and controlling gas-liquid phase chemical reactions includes the steps of introducing a liquid reactant to the hollow interior of a cylindrical porous tube in a thin film following a spiral flow pattern around and along the wall of the tube; controlling the physical characteristics of the liquid film and the flow pattern followed by the film through the tube; mixing a gas reactant and an inert gas in preselected proportion; sparging the mixture of gas reactant and inert gas through the wall of the tube and into the liquid film to form a multiplicity of gas bubbles in interfacial contact with the gas; allowing the gas reactant and the liquid reactant to chemically react; segregating the remaining gas from the liquid within the tube; and separating the cleaned liquid stream from the contaminant laden gas stream.Type: GrantFiled: November 15, 1996Date of Patent: March 24, 1998Assignee: Revtech Industries, Inc.Inventors: Thomas L. Grisham, Janet K. Peters, Keith W. Sharp, Edward E. Ebel
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Patent number: 5662811Abstract: Apparatus for creating gas-liquid interfacial contact conditions for highly efficient mass transfer between gas and liquid comprises a gas-liquid contactor assembly including a hollow porous tube surrounded by an outer jacket defining a gas plenum between the jacket and the porous tube; a liquid feed assembly including a nozzle for injecting liquid into the porous tube in a spiraling flow pattern around and along the porous tube; a gas-liquid separator assembly at the first end of the porous tube including a nonporous degassing tube coaxially aligned with and connected to the porous tube, a gas outlet port coaxially aligned with the degassing tube to receive a first portion of gas flowing from the degassing tube, a first gas duct coaxially aligned with and connected to the gas outlet duct to convey the first portion of gas therefrom; and a liquid collection assembly. A second gas discharge assembly to collect and convey gas from the first end of the porous tube is also disclosed.Type: GrantFiled: March 18, 1996Date of Patent: September 2, 1997Assignee: Revtech Industries, Inc.Inventors: Thomas L. Grisham, Janet K. Peters, Keith W. Sharp, Edward E. Ebel
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Patent number: 5529701Abstract: Apparatus for optimizing gas-liquid interfacial contact for molecular mass transfer between gas and liquid comprises a gas-liquid contactor assembly including a hollow porous tube surrounded by an outer jacket defining a gas plenum between the jacket and the porous tube; a liquid feed assembly including a nozzle for injecting liquid into the porous tube in a spiraling flow pattern around and along the porous tube; a gas-liquid separator assembly at the first end of the porous tube including a nonporous degassing tube coaxially aligned with and connected to the porous tube, a gas outlet port coaxially aligned with the degassing tube to receive a first portion of gas flowing from the degassing tube, a first gas duct coaxially aligned with and connected to the gas outlet duct to convey the first portion of gas therefrom; a liquid collection assembly; and a second gas discharge assembly to collect and convey gas from the first end of the porous tube.Type: GrantFiled: June 21, 1995Date of Patent: June 25, 1996Assignee: Revtech Industries, Inc.Inventors: Thomas L. Grisham, Janet K. Peters, Keith W. Sharp, Edward E. Ebel
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Patent number: 4670164Abstract: A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.Type: GrantFiled: April 3, 1986Date of Patent: June 2, 1987Assignee: NL Industries, Inc.Inventors: Kenneth E. Watson, Keith W. Sharp
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Patent number: 4622153Abstract: A liquid polymer containing composition, useful as a thickening agent for aqueous systems, containing hydroxyethyl cellulose, a hydrophobic liquid medium in which the hydroxyethyl cellulose is substantially non-swellable and a gelling agent for thickening the hydrophobic liquid.Type: GrantFiled: January 25, 1980Date of Patent: November 11, 1986Assignee: NL Industries, Inc.Inventors: Kenneth E. Watson, Keith W. Sharp
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Patent number: 4239084Abstract: A well liner for a subterranean well is provided comprising an elongated tubular member which may be a wire wrapped screen having a plurality of slots or passages which are disposed longitudinally and circumferentially of and extending from the outer surface to the inner surface of the tubular member, and an impermeable inorganic matrix substantially filling said slots or passages and coated upon said inner and outer surfaces, said matrix being the reaction product of a first reactant consisting essentially of magnesium oxide and a second reactant consisting essentially of magnesium chloride, in a solvent or solution therefor.Type: GrantFiled: July 11, 1979Date of Patent: December 16, 1980Assignee: Baker International CorporationInventors: Keith W. Sharp, Derry D. Sparlin
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Patent number: 4202411Abstract: A well liner for a subterranean well is provided comprising an elongated tubular member which may be a wire wrapped screen having a plurality of slots or passages which are disposed longitudinally and circumferentially of and extending from the outer surface to the inner surface of the tubular member, and an impermeable inorganic matrix substantially filling said slots or passages and coated upon said inner and outer surfaces, said matrix being the reaction product of a first reactant consisting essentialy of magnesium oxide and a second reactant consisting essentially of magnesium chloride, in a solvent or solution therefor.Type: GrantFiled: May 24, 1978Date of Patent: May 13, 1980Assignee: Baker International CorporationInventors: Keith W. Sharp, Derry D. Sparlin