Patents Represented by Attorney C. Clark Dougherty, Jr.

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  • Light weight high temperature well cement compositions and methods
    Patent number: 6143069
    Abstract: The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash and water.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: November 7, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs
  • Settable spotting fluid compositions and methods
    Patent number: 6138759
    Abstract: Improved settable spotting fluid compositions and methods are provided. The settable spotting fluid compositions are basically comprised of a hydraulic settable component comprised of fly ash, a fluid loss control additive, a gel strength inhibiting additive, a set retarding additive and water selected from the group of fresh water and salt water present in an amount sufficient to form a slurry having a density in the range of from about 12 to about 15 pounds per gallon.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: October 31, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, James E. Griffith, Ricky A. Cox, Bryan K. Waugh
  • Titanium dioxide pigments
    Patent number: 6139617
    Abstract: There are provided titanium dioxide pigments characterized by improved gloss developing and dispersibility properties in surface coating vehicles and reduced dispersant requirements. Said titanium dioxide pigments comprise pigmentary titanium dioxide particles having deposited thereon a treating agent comprising at least one amine salt of a monoprotic.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 31, 2000
    Assignee: Kerr-McGee Chemical LLC
    Inventors: John E. Halko, Frances K. Tyler, David A. Doherty
  • Process and apparatus for manufacturing endodontic instruments
    Patent number: 6126521
    Abstract: An improved process for producing an endodontic instrument with a predetermined taper having a plurality of flutes, each with a predetermined number of spirals over a predetermined length of the instrument are provided. The process basically comprises providing a grinding wheel rotated about a first axis having a plurality of flute grinding ribs and a rolled deformed metal grinding rib extending from a periphery thereof. A rotating wire stock is fed past the plurality of flute grinding ribs and the rolled deformed metal grinding rib at a controlled rate along a second axis so that a separate flute is ground on the wire stock by each of the flute grinding ribs and rolled deformed metal is removed from the ground wire stock by the rolled deformed metal grinding rib.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: October 3, 2000
    Assignee: Moyco Technologies, Inc.
    Inventors: Jack L. Shearer, Dane L. Shearer, Scott A. Munchel, Lonnie M. Graybill
  • High temperature epoxy resin compositions, additives and methods
    Patent number: 6124246
    Abstract: Improved high temperature epoxy resin compositions, additives and methods are provided. A hardenable epoxy resin composition of the present invention is comprised of an epoxy resin, an aromatic diluent, a hardening agent and a hardening retarder for delaying the hardening of the epoxy composition at high temperatures comprised of a liquid which is soluble in the epoxy resin composition having a halide salt dissolved therein.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: September 26, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James F. Heathman, Rick L. Covington, Bill W. Loughridge
  • Methods of stimulating and producing multiple stratified reservoirs
    Patent number: 6119776
    Abstract: Methods of stimulating and producing multiple stratified hydrocarbon reservoirs having numerous separate reservoir compartments are provided. The methods basically comprise the steps of drilling a first well bore into a lower part of the reservoir having a horizontal portion which intersects a previously drilled second well bore therein. At least one fracture is formed extending into two or more reservoir compartments from the horizontal portion of the third well bore for conducted hydrocarbons in the reservoir into the horizontal portion of the first well bore from where the hydrocarbons flow into the second well bore and are withdrawn.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: September 19, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Stephen A. Graham, Raymond L. Brown, David S. Stegemeier
  • Process for separating radioactive and hazardous metal contaminants from soils
    Patent number: 6102053
    Abstract: A process for treating radioactive contaminated soils to remove radioactive contaminants therefrom includes creating a suspension of particles of the soil in water, and directing the slurry to a particle size separator. The small particles including radioactive contaminants are collected and handled for radioactive waste material storage. The aqueous slurry of large soil particles is directed to separators for removing substantial amounts of water after which the particles are directed to a conveyor and spread out to a substantially uniform thickness and detected for any radioactivity. Portions of material in which radioactive particles are detected are diverted and the uncontaminated soil material is recovered.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: August 15, 2000
    Assignee: Kerr-McGee Chemical LLC
    Inventors: Garet E. Van De Steeg, L. Keith Bailey
  • Compositions and methods for sealing pipe in well bores
    Patent number: 6098711
    Abstract: The present invention provides improved compositions and methods for sealing pipe in well bores. The compositions are basically comprised of an aqueous rubber latex, a rubber latex activator for causing the latex to harden, an organosilane and a filler.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: August 8, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, David D. Onan, Bobby J. King
  • Methods of stimulating and producing multiple stratified reservoirs
    Patent number: 6095244
    Abstract: Methods of stimulating and producing multiple stratified hydrocarbon reservoirs having numerous separate reservoir compartments are provided. The methods basically comprise the steps of drilling a first well bore into a lower part of the reservoir having a horizontal portion which intersects a previously drilled second well bore therein. At least one fracture is formed extending into two or more reservoir compartments from the horizontal portion of the first well bore for conducted hydrocarbons in the reservoir into the horizontal portion of the first well bore from where the hydrocarbons flow into the second well bore and are withdrawn.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: August 1, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Stephen A. Graham, Raymond L. Brown, David S. Stegemeier
  • Well sealing compositions and methods
    Patent number: 6068055
    Abstract: The present invention provides improved well sealing compositions and methods. The compositions are basically comprised of slag cement, water, a slag cement set activator, a hardenable epoxide containing material and an epoxide containing material hardening agent.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: May 30, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, David D. Onan, Roger S. Cromwell, Bobby J. King
  • Foamed well cement slurries, additives and methods
    Patent number: 6063738
    Abstract: The present invention provides improved foamed well cement slurries, additives and methods. The additives, which foam and stabilize a cement slurry containing fresh water or salt water, are basically comprised of a mixture of an ethoxylated alcohol ether sulfate surfactant, an alkyl or alkene amidopropyl betaine surfactant and an alkyl or alkene amidopropyl dimethyl amine oxide surfactant.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: May 16, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Frank Zamora, Bobby J. King
  • Subterranean zone sealing methods and compositions
    Patent number: 6059035
    Abstract: The present invention provides sealing methods and compositions for use in subterranean zones penetrated by well bores. The methods of the invention basically include the steps of preparing a sealing composition which includes an aqueous silicate solution, an epoxide containing liquid and a delayed epoxide hardening agent, placing the sealing composition into a subterranean zone and allowing the sealing composition to set into a rigid impermeable sealing mass in the zone.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: May 9, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, David D. Onan, Bobby J. King, Roger S. Cromwell
  • Methods and compositions for sealing subterranean zones
    Patent number: 6059036
    Abstract: The present invention provides methods and compositions for sealing subterranean zones. The methods of the invention basically comprise the steps of preparing a sealing composition comprised of an aqueous alkali metal silicate solution, a gelling agent and a delayed acid activator for causing the composition to set into a rigid mass, placing the sealing composition in said subterranean zone and allowing the sealing composition to set into a rigid sealing mass therein.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: May 9, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Lewis R. Norman, David D. Onan, Bobby J. King, Roger S. Cromwell
  • Oil based compositions for sealing subterranean zones and methods
    Patent number: 6060434
    Abstract: The present invention provides oil based compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophillic clay and a water-swellable clay.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: May 9, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ronald E. Sweatman, Archie J. Felio, James F. Heathman
  • Apparatus and method for simulating well bore conditions
    Patent number: 6055874
    Abstract: The present invention provides methods and apparatus for simulating well bore conditions before and after cementing therein. The methods of the invention are basically comprised of the steps of circulating a drilling fluid through a closed test cell containing a permeable rock core while maintaining a selected pressure differential across the rock core to form a layer of filter cake thereon, circulating a filter cake removal fluid through the test cell to simulate the clean-up of the well bore and then determining the condition of the rock core with respect to the effectiveness of the filter cake removal fluid thereon.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: May 2, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David D. Onan, Dennis W. Gray, Russell M. Fitzgerald, Johnny W. Johnson
  • Methods of treating subterranean formation using borate cross-linking compositions
    Patent number: 6024170
    Abstract: The present invention provides improved methods of treating subterranean formations using borate cross-linking compositions and borate cross-linked well treating fluids. The borate cross-linking compositions are basically comprised of a low viscosity hydrocarbon liquid, an organophillic clay, a slightly water soluble borate, a buffer and a dispersing agent.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: February 15, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael A. McCabe, Phillip C. Harris, Billy Slabaugh, Ronald J. Powell, John M. Terracina, Joseph G. Yaritz, Chris E. Shuchart
  • Cement compositions and biodegradable dispersants therefor
    Patent number: 6019835
    Abstract: This invention provides improved cement composition and biodegradable dispersants therefor. The biodegradable dispersants are basically comprised of a high molecular weight, phenolic hydroxy group blocked, alkali metal lignosulfonate.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: February 1, 2000
    Assignees: Halliburton Energy Services, Inc., LignoTech U.S.A., Inc.
    Inventors: Jiten Chatterji, D. Chad Brenneis, Dennis W. Gray, Stuart E. Lebo, Stephen L. Dickman
  • Compositions and methods for consolidating unconsolidated subterranean zones
    Patent number: 6016870
    Abstract: The present invention relates to improved methods and compositions for consolidating unconsolidated subterranean zones. The compositions of the invention are low viscosity hardenable epoxy resin compositions which are basically comprised of an epoxy resin, a N-methyl-2-pyrrolidone diluent and an effective amount of a hardening agent.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: January 25, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Brahmadeo T. Dewprashad, Philip D. Nguyen, Kirk L. Schreiner
  • Remedial well bore sealing methods and compositions
    Patent number: 6012524
    Abstract: The present invention relates to improved methods and compositions for sealing subterranean zones penetrated by well bores to reduce their permeabilities and increase their compressive strengths. The methods basically comprise the steps of introducing an aqueous sealing composition into a subterranean zone comprising a polymerizable monomer, a polymerization initiator, a hardenable epoxide containing liquid and a hardening agent, placing the sealing composition by way of the well bore into the subterranean zone and allowing the sealing composition to polymerize and harden whereby the well bore is sealed.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: January 11, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, David D. Onan, Roger S. Cromwell
  • Apparatus and method for generating electricity from energy in a flowing stream of fluid
    Patent number: 6011346
    Abstract: Apparatus to generate electricity from energy in a flowing stream of fluid comprises a piezoelectric member and a flow restrictor connected with the member to cause portions of a flowing stream of fluid to flow past different sides of the member such that the member deforms to generate electricity in response thereto. A particular such apparatus includes a conduit to conduct a flowing stream of fluid; a divider disposed along at least a portion of the length of the conduit such that the divider divides that portion of the conduit into two flow channels; a piezoelectric member connected to the divider such that one side of the piezoelectric member is exposed to one of the two flow channels and another side of the piezoelectric member is exposed to the other of the two flow channels; and a flow restrictor disposed at a location between one end of the divider and the other end of the divider.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: January 4, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ronnie J. Buchanan, Charles A. Butterfield, Jr.