Patents Represented by Attorney G. Keith deBrucky
  • Patent number: 4740215
    Abstract: Liquid hydrocarbon fuels, especially diesel fuels, are admixed with diesters of oxalic acid to produce liquid hydrocarbon fuel compositions having improved ignition quality and enhanced cetane numbers.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: April 26, 1988
    Assignee: Union Oil Company of California
    Inventors: Diane M. Dillon, Peter J. Jessup
  • Patent number: 4515635
    Abstract: Cementing compositions and methods of using such compositions in oil, gas and water well cementing operations to reduce fluid loss from the composition to the formation are disclosed. Such compositions incorporate certain copolymers of N, N dimethylacrylamide and 2-acrylamido, 2-methyl propane sulfonic acid having mole ratios of between 1:4 and 4:1 respectively and average molecular weights of between about 75,000 and about 300,000.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: May 7, 1985
    Assignee: Halliburton Company
    Inventors: S. Prabhakara Rao, John F. Burkhalter
  • Patent number: 4466831
    Abstract: Rapidly dissolvable powdered silicates having a molar ratio of silicon dioxide to alkali metal oxide in the range of from about 1.5:1 to about 3.3:1 wherein the alkali metal is selected from the group consisting of sodium, potassium and mixtures thereof. Methods of using the powdered silicates and resulting solutions in connection with sealing and cementing, especially of well formations, are provided.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: August 21, 1984
    Assignee: Halliburton Company
    Inventor: Joseph R. Murphey
  • Patent number: 4466837
    Abstract: Liquid water loss reducing additives for use in cement slurries are provided comprised of aqueous solutions of low molecular weight carboxymethylhydroxyethyl-cellulose polymers. Methods of using the additives are also provided.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: August 21, 1984
    Assignee: Halliburton Company
    Inventors: Jiten Chatterji, Bobby G. Brake, John M. Tinsley
  • Patent number: 4462718
    Abstract: A particular simple method and class of organic polycationic polymer compositions are provided for treating earthen formations such as in oil wells to stabilize clay against dispersion and expansion due to water.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: July 31, 1984
    Assignee: Halliburton Company
    Inventors: Homer C. McLaughlin, Jimmie D. Weaver, Jr., Bobby E. Hall
  • Patent number: 4460483
    Abstract: Hydrocarbon base treating fluids for stabilizing water sensitive clay containing formations against damage to flow permeability are provided. The treating fluids are comprised of a hydrocarbon external, hydrocarbon liquid-aqueous clay stabilizing polymer solution emulsion dispersed in a hydrocarbon carrier liquid. Methods of forming and using the treating fluids are also provided.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: July 17, 1984
    Assignee: Halliburton Company
    Inventor: Jimmie D. Weaver
  • Patent number: 4460627
    Abstract: Several new treatment processes and compositions for practicing these processes are provided which substantially alter the fluid flow and surface characteristics of porous permeable particulate formations, especially subterranean formations intersected by an oil well. The compositions of this invention also provide methods of increasing viscosity or gelling aqueous fluids, especially acids, which can be used to treat such earthen formations. Treatment of the earthen formations with the compositions of this invention can substantially modify the permeability and surface characteristics of the formation to prevent or reduce the flow of aqueous fluids, especially water and formation brines through that portion of the formation, thereby reducing the water-oil ratio of fluid flowing through or produced from that formation and in some cases enhancing the hydrocarbon production. The treatment of this invention uses branched organic polymers of a wide molecular weight range.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: July 17, 1984
    Assignee: Halliburton Company
    Inventors: Jimmie D. Weaver, Lawrence E. Harris, Weldon M. Harms
  • Patent number: 4455169
    Abstract: Salt water cement slurries having low water loss when in contact with water permeable earth formations and additives for reducing water loss from salt water cement slurries are provided. The additives are comprised of very low molecular weight carboxymethylhydroxyethylcellulose polymers. Methods of using the additives are also provided.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: June 19, 1984
    Assignee: Halliburton Company
    Inventors: Jiten Chatterji, Bobby G. Brake
  • Patent number: 4447342
    Abstract: A method of preventing permeability damage due to clay swelling, disintegration and migration in subterranean formations producing oil and gas, where such formations are to be the subject of enhanced oil recovery techniques using anionic or caustic flood chemicals. Prior to the use of such enhanced oil recovery techniques, a cationic organic polymer capable of stabilizing clays is introduced into an oil reservoir treatment area followed by introduction of a sufficient amount of a non-anionic aqueous spacer fluid to cause the cationic organic polymer to reorient itself on the reservoir clays in a substantially monomolecular layer and manner such that it will continue to stabilize the reservoir clays but will not substantially react with the anionic or caustic flood chemicals to form permeability damaging precipitates or to decompose thereby reducing its clay stabilization effectiveness.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: May 8, 1984
    Assignee: Halliburton Co.
    Inventors: John K. Borchardt, David L. Brown
  • Patent number: 4439334
    Abstract: Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. Methods and systems for enhancing the recovery of oil from subterranean oil-containing formations are also provided. The viscous aqueous polymer solutions of the invention are prepared by polymerizing one or more water soluble polymerizable vinyl monomers in a substantially oxygen-free aqueous solvent and then further diluting the resultant concentrated solution in additional solvent. Such viscous aqueous polymer solutions have improved viscosity properties and increased compatibility with oil well treating fluid additives, especially clay stabilizers.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: March 27, 1984
    Assignee: Halliburton Company
    Inventor: John K. Borchardt
  • Patent number: 4433731
    Abstract: Liquid water loss reducing additives for use in cement slurries are provided comprised of aqueous solutions of low molecular weight carboxymethylhydroxyethylcellulose polymers. Methods of using the additives are also provided.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: February 28, 1984
    Assignee: Halliburton Company
    Inventors: Jiten Chatterji, Bobby G. Brake, John M. Tinsley
  • Patent number: 4409110
    Abstract: This invention provides novel aqueous fluid compositions which comprise a synergistic mixture of two classes of water dispersible or soluble polymers, i.e. (1) synthetic polymeric viscosifier and (2) polycationic organic polymer. These compositions are uniquely adapted for use in enhanced oil recovery. Addition of the polycationic organic polymer reduces the solution viscosity, increases the injectivity of the aqueous solution into low permeability formations. This reaction also reduces the shear degradation of the polymers during pumping, injection through the perforations, and during the period of relatively rapid fluid movement as the solution moves through an earthen or subterranean formation in the important zone within about a ten foot radius around the well bore. Once in an earthen formation, the polycationic organic polymer is rapidly adsorbed from the solution resulting in an increase in solution viscosity and improving the mobility ratio and also resulting in enhanced and/or increased oil recovery.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: October 11, 1983
    Assignee: Halliburton Company
    Inventors: John K. Borchardt, David L. Brown
  • Patent number: 4401789
    Abstract: Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. More particularly, a method of preparing such viscous aqueous polymer solution in a buffer system that contains a particular buffer and a substantially oxygen free aqueous solvent. Such solvent is used for pH control and contains one or more metal salts.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: August 30, 1983
    Assignee: Halliburton Company
    Inventor: Charles M. Gideon
  • Patent number: 4395340
    Abstract: A method of enhanced oil recovery from subterranean oil-containing formations via injection through an injection well penetrating the formation of a viscous aqueous solution containing one or more water-soluble organic polymers and forcing such solution through the formation towards a production well for ultimate recovery. The viscous aqueous polymer solutions of the invention are prepared at the site of their use by polymerizing one or more water-soluble polymerizable vinyl monomers in aqueous solutions which may contain high concentrations of one or more salts.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: July 26, 1983
    Assignee: Halliburton Company
    Inventor: Homer C. McLaughlin
  • Patent number: 4393939
    Abstract: A process for treating a subterranean formation with an aqueous cement composition and minimizing damage to formation permeability by said composition filtrate comprising mixing with said composition at least one polycationic polymer having a molecular weight of about 400 to 6,000,000 prior to treating said formation.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: July 19, 1983
    Assignee: Halliburton Services
    Inventors: Charles W. Smith, John K. Borchardt
  • Patent number: 4391643
    Abstract: Rapidly dissolvable powdered silicates having a molar ratio of silicon dioxide to alkali metal oxide in the range of from about 1.5:1 to about 3.3:1 wherein the alkali metal is selected from the group consisting of sodium, potassium and mixtures thereof. Methods of using the powdered silicates and resulting solutions in connection with sealing and cementing, especially of well formations, are provided.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: July 5, 1983
    Assignee: Halliburton Company
    Inventor: Joseph R. Murphey
  • Patent number: 4374968
    Abstract: Methods of forming isocyanate polymers having long gellation times in the presence of water without the formation of excess foam.
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: February 22, 1983
    Assignee: Halliburton Company
    Inventor: Homer C. McLaughlin
  • Patent number: 4368136
    Abstract: Particular aqueous gel compositions are described for use as a carrier fluid for gravel, sand or particulate matter for the purpose of gravel packing, fracturing, or propping fractures in a subterrranean well formation.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: January 11, 1983
    Assignee: Halliburton Services
    Inventor: Joseph R. Murphey
  • Patent number: RE31127
    Abstract: Oil well cementing compositions and processes are produced using a high efficiency sulfoalkylated lignin retarder composition and modifications thereof to produce cement compositions without gelation problems, having high early strength and with precisely controllable setting time.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: January 18, 1983
    Assignee: Halliburton Company
    Inventors: Jerry D. Childs, Roosevelt Love
  • Patent number: RE31190
    Abstract: Oil well cementing compositions and processes are produced using a high efficiency sulfoalkylated lignin retarder composition and modifications thereof to produce cement compositions without gelation problems, having high early strength and with precisely controllable setting time.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: March 29, 1983
    Assignee: Halliburton Company
    Inventors: William J. Detroit, Michael E. Sanford, Jiten Chatterji, Charles R. George, Jerry D. Childs, Roosevelt Love