Patents Represented by Attorney Thomas R. Weaver

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  • Acetone/formaldehyde/cyanide resins
    Patent number: 5290357
    Abstract: A composition for and method of dispersing particles of hydraulic cement in a slurry of hydraulic cement in water, wherein the composition is the reaction product of a ketone, an aldehyde, a cyanide and, optionally, a sulfite. The dispersant properties of the composition can be enhanced by further reacting the composition with hydroxide.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: March 1, 1994
    Assignee: Halliburton Company
    Inventor: Larry Eoff
  • Retarded acid soluble well cement compositions and methods
    Patent number: 5281270
    Abstract: Retarded acid soluble well cement compositions which set into hard substantially impermeable masses and methods of using such compositions for forming removable cement plugs or seals in subterranean zones are provided. The compositions are comprised of magnesium oxychloride cement and a set retarder comprised of a water soluble borate and a sugar.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: January 25, 1994
    Assignee: Halliburton Company
    Inventors: Patty L. Totten, Bobby G. Brake, Edward F. Vinson
  • High temperature well cement compositions and methods
    Patent number: 5273580
    Abstract: Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: December 28, 1993
    Assignee: Halluburton Company
    Inventors: Patty L. Totten, Donald W. Lindsey, Bobby J. King
  • Soil-cement compositions and methods
    Patent number: 5263797
    Abstract: The present invention provides improved soil-cement compositions and methods of forming subterranean cementitious masses using the compositions. The soil-cement compositions are basically comprised of hydraulic cement, water present in the compositions in amounts sufficient to form slurries of the solids therein, a dispersant comprised of a mixture of sodium dihydrogen phosphate buffer, ferrous lignosulfonate, ferrous sulfate and tannic acid and soil present in an amount whereby the volume ratio of cement, water and dispersant to soil in the compositions is in the range of from about 0.3:1 to about 2.1:1.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: November 23, 1993
    Assignee: Halliburton Energy Services
    Inventors: Kurt O. Lindstrom, Wendell D. Riley
  • Set retarded ultra fine cement compositions and methods
    Patent number: 5263542
    Abstract: Set retarded ultra fine cement compositions which remain pumpable for a predictable period of time at temperatures up to about 240.degree. F. are provided. The compositions are basically comprised of an ultra fine hydraulic cement, sufficient water to form a pumpable slurry and a set retarder comprised of a methylenephosphonic acid derivative.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: November 23, 1993
    Assignee: Halliburton Company
    Inventor: Lance E. Brothers
  • Set retarding additives, cement compositions and methods
    Patent number: 5264470
    Abstract: The present invention provides set retarding additives, set retarded hydraulic cement compositions including such additives and methods of using the cement compositions for cementing zones in wells. The set retarding additives are graft polymers comprised of a backbone sugar having one or more pendant polymerized or copolymerized vinyl compounds grafted thereto.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: November 23, 1993
    Assignee: Halliburton Company
    Inventor: Larry Eoff
  • Squeeze cementing
    Patent number: 5238064
    Abstract: This invention relates to a method of terminating the undesirable flow of water from a highly permeable portion of a portion of or a fracture in a subterranean formation into a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in a slurry of a hydrocarbon liquid and a surfactant, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: August 24, 1993
    Assignee: Halliburton Company
    Inventors: Jeffrey A. Dahl, E. Dwyann Dalrymple, James R. Stanford
  • Method of breaking metal-crosslinked polymers
    Patent number: 5224546
    Abstract: A new method is provided for improved degradation of metal-crosslinked polymer gels which are useful in oil and gas well treating operations. In this method an esterified carboxylated chelator is added to the gel. At elevated temperatures, the esterified chelator undergoes hydrolysis to form an acid and an active ligand which subsequently removes the crosslinking metal ion from the gel and hydrolyses the polymer.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: July 6, 1993
    Inventors: William H. Smith, Jimmie D. Weaver
  • Delayed breaking metal crosslinked polymer compositions
    Patent number: 5223159
    Abstract: A new method is provided for improved degradation of metal-crosslinked polymer gels which are useful in oil and gas well treating operations. In this method an esterified carboxylated chelator is added to the gel. At elevated temperatures, the esterified chelator undergoes hydrolysis to form an acid and an active ligand which subsequently removes the crosslinking metal ion from the gel and hydrolyses the polymer.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: June 29, 1993
    Inventors: William H. Smith, Jimmie D. Weaver
  • Retarded acid soluble well cement compositions and methods
    Patent number: 5220960
    Abstract: Retarded acid soluble well cement compositions which set into hard substantially impermeable masses and methods of using such compositions for forming removable cement plugs or seals in subterranean zones are provided. The compositions are comprised of magnesium oxychloride cement and a set retarder comprised of a water soluble borate and a sugar.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: June 22, 1993
    Assignee: Halliburton Company
    Inventors: Patty L. Totten, Bobby G. Brake, Edward F. Vinson
  • Well cementing method using acid removable low density well cement compositions
    Patent number: 5213161
    Abstract: Low density well cement compositions which set into hard substantially impermeable masses, but which are removable by dissolution in acid, and methods of utilizing such compositions for forming removable cement plugs or seals in subterranean zones are provided. The compositions are comprised of pumpable foamed slurries of magnesium oxychloride cement.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: May 25, 1993
    Assignee: Halliburton Company
    Inventors: Bobby J. King, Patty L. Totten
  • Horizontal well completion methods
    Patent number: 5211234
    Abstract: Methods of completing a well bore having a conduit disposed therein where portions of the well bore and conduit are positioned substantially horizontally in a subterranean producing formation are provided. A hardenable resin composition coated particulate solid material is placed in the annulus between the sides of the well bore and the conduit, and the resin composition is caused to harden whereby the particulate material is consolidated into a hard permeable mass. An aqueous cement slurry is introduced into the permeable consolidated particulate material whereby horizontal sections thereof are isolated which allows tests and/or treatments in selected portions of the horizontal well to be performed.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: May 18, 1993
    Assignee: Halliburton Company
    Inventor: L. Craig Floyd
  • Method for clay stabilization with quaternary amines
    Patent number: 5197544
    Abstract: A method of treating a clay-containing subterranean formation with an aqueous fluid is disclosed. The method features the use of quaternary ammonium compounds as additives to control formation damage caused by contacting the formation with the aqueous fluid.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: March 30, 1993
    Assignee: Halliburton Company
    Inventor: Ronald E. Himes
  • Fluid loss control method
    Patent number: 5191931
    Abstract: A method of temporarily reducing fluid loss into a subterranean formation from a well bore penetrating the formation by way of at least one perforation is provided. A first soluble particulate solid material is introduced into the formation by way of the perforation having a particle size whereby it bridges on the face of the formation and fills the perforation but allows fluid flow therethrough. A second soluble particulate solid material is introduced into the well bore having a particle size such that it bridges on the first particulate solid material and forms a seal over the perforation within the well bore.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: March 9, 1993
    Assignee: Halliburton Company
    Inventors: Ronald E. Himes, Walter R. Dill
  • Methods of preparing and using substantially debris-free gelled aqueous well treating fluids
    Patent number: 5186847
    Abstract: The present invention relates to methods of preparing and using substantially debris-free gelled aqueous well treating fluids containing a cellulose gelling agent. The preparation methods comprise the steps of forming a gelled aqueous fluid and then mixing an amine phosphonate compound therewith to cause the hydration of unhydrated gelling agent remaining therein.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: February 16, 1993
    Assignee: Halliburton Company
    Inventors: R. Clay Cole, Bobby K. Bowles
  • High temperature well cement compositions and methods
    Patent number: 5184680
    Abstract: Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: February 9, 1993
    Assignee: Halliburton Company
    Inventors: Patty L. Totten, Donald W. Lindsey, Bobby J. King
  • Methods of selectively reducing the water permeabilities of subterranean formations
    Patent number: 5181568
    Abstract: The water permeability and the production of salt water from a subterranean oil bearing formation is reduced by introducing a viscous aqueous polymer composition into the formation which will subsequently form a crosslinked gel therein, and thereafter introducing a hydrocarbon cement slurry into the formation.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: January 26, 1993
    Assignee: Halliburton Company
    Inventors: Kenneth W. McKown, Danny Rothenberger
  • Preparation and use of gelable silicate solutions in oil field applications
    Patent number: 5168928
    Abstract: A gelable silicate solution prepared by mixing fumed silica and an alkali metal hydroxide with water is provided. The silicate solution is used to form a seal or plug in one or more subterranean formations or in a well bore penetrating the formations by pumping the solution into a desired location in the well bore or formations and allowing the silicate solution to gel therein.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: December 8, 1992
    Assignee: Halliburton Company
    Inventors: Dralen T. Terry, Edward F. Vinson
  • Well completion and remedial methods utilizing rubber latex compositions
    Patent number: 5159980
    Abstract: Well completion methods utilizing rubber latex compositions are provided. The compositions are comprised of an aqueous suspension of rubber, a vulcanizing agent and a vulcanization activator, and are placed in a subterranean formation or a well bore at a desired location therein and allowed to vulcanize whereby a solid rubber plug or seal is formed.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: November 3, 1992
    Assignee: Halliburton Company
    Inventors: David D. Onan, Garland W. Davis, Roger S. Cromwell
  • Composition and method for cementing a well
    Patent number: 5151203
    Abstract: A composition for and method of performing primary cementing operations is disclosed. The method comprises the use of a water slurry of a thixotropic cementing composition which rapidly develops sufficient static gel strength to reduce if not eliminate annular gas migration.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: September 29, 1992
    Assignee: Halliburton Company
    Inventors: Wendell D. Riley, Jerry D. Childs