Patents Represented by Attorney Robert A. Kent
  • Patent number: 6705400
    Abstract: Improved methods of forming fractures containing resilient proppant particle packs which prevent the production of sand and fines with produced fluids and prevent proppant flow-back in a subterranean zone penetrated by a well bore are provided. As the fractures are formed, a liquid hardenable resin component is mixed with a liquid hardening agent component and a liquid rubber component to form a hardenable resin composition. The hardenable resin composition is coated onto dry proppant particles which are suspended in the fracturing fluid and placed in the fractures. The hardenable resin composition on the resin composition coated proppant particles is allowed to harden and consolidate the proppant particles into high strength resilient permeable packs.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: March 16, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Johnny A. Barton
  • Patent number: 6698519
    Abstract: Methods of forming permeable sand screens in long, open hole well bores within fluid producing zones are provided. The methods basically comprise the steps of placing a perforated pipe in the open hole well bore, providing a hardenable composition which after being placed in a desired location cures into a hard mass, placing the hardenable composition in the well bore adjacent to the fluid producing zone within the interior of the perforated pipe therein, between the perforated pipe and the walls of the open hole well bore and within voids or fractures in the producing zone, causing the hardenable composition to cure into a hard permeable mass and drilling the hard permeable mass out of the interior of the perforated pipe.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 2, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Henry L. Restarick, Ronald G. Dusterhoft
  • Patent number: 6695055
    Abstract: Methods of reducing the water permeability of a water producing zone in a subterranean formation are provided. The methods basically comprise introducing a polymeric surfactant and an inert gas into the water producing zone to thereby form a water permeability reducing foam therein. The polymeric surfactant has the property of facilitating the formation of the foam and the additional property of stabilizing the foam in the presence of flowing formation water.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: February 24, 2004
    Assignee: Wm. Marsh Rice University
    Inventors: George J. Hirasaki, Clarence A. Miller
  • Patent number: 6691780
    Abstract: Compositions and methods for tracking the transport of particulate solids during the production of hydrocarbons from a subterranean formation.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: February 17, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Jimmie D. Weaver, Johnny A. Barton
  • Patent number: 6668926
    Abstract: Improved methods of coating dry proppant particles with a hardenable resin composition, suspending the coated proppant particles in a fracturing fluid and consolidating the proppant particles after being placed in fractures into high strength permeable masses are provided. As the fractures are formed, a liquid hardenable resin component is continuously mixed with a liquid hardening agent component on-the-fly to form a hardenable resin composition. The hardenable resin composition is continuously coated onto dry proppant particles conveyed from a source thereof on-the-fly to form resin composition coated proppant particles, and the resin composition coated proppant particles are continuously suspended in the fracturing fluid on-the-fly.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: December 30, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Johnny A. Barton
  • Patent number: 6662873
    Abstract: Methods of forming a permeable cement composition in a well bore adjacent to a fluid producing zone therein and cement compositions for forming permeable cement sand screens in well bores are provided. A cement composition of the invention is comprised of a hydraulic cement, a particulate cross-linked aqueous gel having a size in the range of from about 100 microns to about 3000 microns containing an internal temperature activated breaker, a particulate dehydrated cross-linked aqueous gel having a size in the range,of from about 40 microns to about 500 microns containing an internal temperature activated breaker and water present in an amount sufficient to form a slurry.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: December 16, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, David L. Brown, Johnny A. Barton
  • Patent number: 6662874
    Abstract: A method of fracturing a downhole formation according to which a plurality of jet nozzles are located in a spaced relation to the wall of the formation to form an annulus between the nozzles and the formation. A non-acid containing stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus, and against the wall of the formation, and a gas is introduced into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to form fractures in the formation.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 16, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jim B. Surjaatmadja, Alick Cheng, Keith A. Rispler
  • Patent number: 6659179
    Abstract: A method of treating a subterranean hydrocarbon bearing formation penetrated by a perforated section of a cased wellbore. A treating mixture containing particulate material is pumped from the casing through the perforations and into the formation. After injection of the particulate through the perforations a screen is circumferentially expanded in the casing and hydrocarbons are flowed through the perforations and into the casing while the screen prevents particulate materials from flowing into the well.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: December 9, 2003
    Inventor: Philip D. Nguyen
  • Patent number: 6653260
    Abstract: An acidizing composition and a method of acidizing a hydrocarbon bearing subterranean formation in the presence of ferric ions are provided. The acidizing composition includes a mineral acid solution, an electron donor agent, a primary electron transfer agent and a secondary electron transfer agent. The primary electron transfer agent is a source of vanadium ions. The secondary electron transfer agent is a source of iodide ion or iodine. The electron donor agent and primary and secondary electron transfer agents function together to reduce ferric ion present in the mineral acid solution to ferrous ion which in turn prevents ferric hydroxide and/or free sulfur from precipitating out of the solution and reduces the formation of sludge in crude oil in the formation.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: November 25, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Michael M. Brezinski
  • Patent number: 6640898
    Abstract: The present invention provides seawater-based cross-linked fracturing fluids and methods of preparing and using the fluids in fracturing subterranean formations penetrated by well bores and having temperatures above about 200° F. The improved cross-linked fracturing fluids are basically comprised of a gelling agent, seawater present in an amount sufficient to hydrate the gelling agent and to form a gelled aqueous fluid, and a delayed cross-linking agent, capable of causing delayed cross-linking of the gelling agent in the gelled aqueous fluid at a pH below the threshold for precipitate formation in seawater.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: November 4, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Paul D. Lord, John Terracina, Billy Slabaugh
  • Patent number: 6629451
    Abstract: The current invention provides a method for determining the rheology of a mixture of gelled hydrocarbon and liquid carbon dioxide. The method of the current invention precludes the negative impact of the Weissenberg effect when determining the rheology of a non-Newtonian fluid. Additionally, the method of the current invention produces a homogenous mixture without generating the Weissenberg effect.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: October 7, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Robert S. Taylor
  • Patent number: 6626241
    Abstract: Disclosed are improved methods and apparatus for improving the production of hydrocarbons from wells having gravel pack in a production zone. The methods and apparatus basically comprise the steps of entering a gravel packed well and perforating the gravel pack screen and fracture packing the formation through the screen perforations. At least the last portion of the particulate is preferably coated with a consolidator that will form a proppant pack. Installing a second screen in the well to overlap the perforations in the gravel pack screen to prevent the particulate from reentering the well.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: September 30, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Philip D. Nguyen
  • Patent number: 6607035
    Abstract: The present invention provides methods of preventing the flow of water or gas or both through a subterranean zone having a high temperature and a depth such that a long pumping time is required to place a sealing composition therein. The methods basically comprise the steps of preparing a polymeric sealing composition comprised of water, a cross-linking agent and a selected water-soluble polymer which reacts with the cross-linking agent and forms a sealing gel which is stable for a desired period of time at the temperature of the zone and has a pumping time before gelation in the presence of the cross-linking agent whereby the composition can be pumped to the depth of the zone and placed therein. Thereafter, the sealing composition is pumped into the zone and allowed to form a sealing gel therein.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: August 19, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Baireddy R. Reddy, Larry S. Eoff
  • Patent number: 6608006
    Abstract: Methods of drilling well bores using an invertible oil external-water internal emulsion drilling fluid and then inverting the drilling fluid to a water external-oil internal emulsion are provided. The methods basically comprise the steps of contacting the oil external-water internal emulsion with an aqueous acid solution containing an anionic sulfonate surfactant for preventing aqueous acid solution-crude oil emulsions and crude oil sludging and a chemical for preventing the anionic sulfonate surfactant from reacting with the emulsifier in the oil external-water internal emulsion.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: August 19, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Robert S. Taylor, Suzanne Arnold, Tommy R. Gardner, Karen L. King
  • Patent number: 6555505
    Abstract: The present invention provides environmentally safe foamed acidizing fluids for acidizing subterranean zones, additives for foaming and stabilizing foamed acidizing fluids and methods of acidizing subterranean zones. The foamed acidizing fluids are basically comprised of an aqueous acid solution, sufficient gas to form a foam and an effective amount of an additive for foaming and stabilizing the aqueous acid solution comprised of hydrolyzed keratin.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: April 29, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Karen L. King, Jiten Chatterji
  • Patent number: 6544934
    Abstract: Improved methods and compositions for treating subterranean formations penetrated by well bores are provided. A method for breaking a gelled hydrocarbon fluid comprised of a hydrocarbon liquid, a ferric iron or aluminum polyvalent metal salt of a phosphonic or phosphoric acid ester is provided.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: April 8, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Robert S. Taylor, Gary P. Funkhouser
  • Patent number: 6534448
    Abstract: An acidizing composition and a method of acidizing a hydrocarbon bearing subterranean formation in the presence of ferric ions are provided. The acidizing composition includes an aqueous mineral acid solution, an electron donor agent and an electron transfer agent, the electron transfer agent being a source of molybdenum ions. When the aqueous mineral acid solution includes hydrochloric acid in an amount greater than approximately 17% by weight, the acidizing composition further includes a supplemental electron transfer agent, the supplemental electron transfer agent being a source of iodide ion or iodine. The electron donor agent and electron transfer agent function together to reduce ferric ion present in the mineral acid solution to ferrous ion which in turn prevents ferric hydroxide and/or free sulfur from precipitating out of the solution and reduces the formation of sludge in crude oil in the formation.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: March 18, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Michael M. Brezinski
  • Patent number: 6531427
    Abstract: Methods and compositions for reducing the precipitation of aluminum compounds following the contact of an aluminum containing subterranean formation with an acid solution containing hydrofluoric acid are provided. In accordance with the methods, a hydroxy carboxylic acid is combined with the hydrofluoric acid solution and the subterranean formation is contacted with the resulting acid solution.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: March 11, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Chris E. Shuchart, Rick D. Gdanski
  • Patent number: 6525011
    Abstract: Methods and acidizing compositions for reducing the corrosion of the metal surfaces of tubular goods and the like and reducing the precipitation of metal sulfide from the acidizing compositions are provided. The methods basically comprise the steps of combining an aldol-amine adduct with an aqueous acid solution to preferentially react with sulfide ions subsequently dissolved by the aqueous acid solution and thereby prevent subsequently dissolved metal ions from reacting therewith and precipitating, and then introducing the aqueous acid solution containing the aldol-amine adduct into a well or other location to be acidized.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: February 25, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Michael M. Brezinski
  • Patent number: 6511944
    Abstract: Improved methods and compositions for treating subterranean formations penetrated by well bores are provided. A method of the invention for fracturing a subterranean formation comprises the steps of preparing a gelled hydrocarbon fracturing fluid comprised of a hydrocarbon liquid, a ferric iron or aluminum polyvalent metal salt of a phosphonic acid ester, a proppant material, water and a delayed gel breaker, and then contacting the subterranean formation with the gelled liquid hydrocarbon fracturing fluid under conditions effective to create at least one fracture in the subterranean formation.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: January 28, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Robert S. Taylor, Gary P. Funkhouser