Patents Represented by Attorney Thomas H. Whaley
  • Patent number: 4270607
    Abstract: Many petroleum formations contain water having high salinity and/or high concentrations of divalent ions such as calcium or magnesium dissolved therein, and are additionally at temperature from about 70.degree. F. to about 300.degree. F. Most surfactants and polymers suitable for use in fluids or emulsions used in oil recovery operations are either ineffective in high salinity or high hardness waters, or cannot tolerate the higher temperatures encountered in many such formations. A water-external phase, viscous emulsion containing a water soluble and/or dispersible alkylpolyalkoxyalkylene sulfonate or alkylarylpolyalkoxyalkylene sulfonate and as a phase stabilizing additive, a water dispersable and/or soluble petroleum sulfonate, is an effective fluid for flooding oil formations containing brine whose salinity is from 70,000 to 220,000 parts per million total dissolved solids and also having temperatures as high as 300.degree. F.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: June 2, 1981
    Assignee: Texaco Inc.
    Inventors: Ricardo L. Cardenas, Bobby G. Harnsberger, Jim Maddox, Jr.
  • Patent number: 4269271
    Abstract: Many petroleum formations contain water having high salinity and/or high concentrations of divalent ions such as calcium or magnesium dissolved therein, and are additionally at temperatures from about 70.degree. F. to about 300.degree. F. Most surfactants suitable for use in oil recovery operations are either ineffective in high salinity or high hardness waters, or cannot tolerate the higher temperatures encountered in many such formations. A water-external phase emulsion, microemulsion or micellar dispersion containing a water soluble alkylpolyalkoxyalkylene sulfonate or alkylarylpolyalkoxyalkylene sulfonate and a water-insoluble polyethoxylated aliphatic alcohol (including alkanols) or polyethoxylated alkylphenol nonionic surfactant is an effective fluid for flooding in formations containing water whose salinity is from 70,000 to 220,000 parts per million total dissolved solids and also having temperatures as high as 300.degree. F.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: May 26, 1981
    Assignee: Texaco Inc.
    Inventors: Russell D. Shupe, Jim Maddox, Jr.
  • Patent number: 4244810
    Abstract: A fluidized catalytic cracking process for conversion of hydrocarbon charge to cracked products wherein a regenerated fluidized catalytic cracking catalyst having deposited thereon about 1000 to 10,000 ppm of nickel, vanadium, iron or mixtures thereof is treated with a sodium compound prior to use for cracking hydrocarbon charge such that hydrogen yield is increased.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: January 13, 1981
    Assignee: Texaco Inc.
    Inventors: Douglas J. Youngblood, Gerald V. Nelson
  • Patent number: 4239855
    Abstract: Covers compounds of the formula ##STR1## where R is lower alkyl, lower alkenyl or phenyl and R' and R" are either lower alkyl or form a morpholine ring when taken with the adjacent nitrogen atom. Also covers a method of producing a polyurethane foam and elastomer by utilizing said above compounds as catalysts in reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of said catalyst.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: December 16, 1980
    Assignee: Texaco Development Corp.
    Inventor: Robert L. Zimmerman
  • Patent number: 4236579
    Abstract: A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the formation an aqueous solution of lignosulfonate salt modified by alkoxylation as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. The process may best be carried out by injecting the lignosulfonates modified by alkoxylation into the formation through the injection well mixed with either a polymer, a surfactant solution and/or a micellar dispersion. This mixture would then be followed by a drive fluid such as water to push the chemicals to the production well.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: December 2, 1980
    Assignee: Texaco Inc.
    Inventor: George Kalfoglou
  • Patent number: 4232739
    Abstract: The injectability, filterability and stability, especially resistance to precipitation on contact with water containing relatively high content of boron salts such as borates, of an aqueous polysaccharide-containing fluid for use in viscous oil recovery operations is improved by prehydrating the polysaccharide in fresh water of low boron content followed by shearing for a period of time sufficient to provide desirable filtration properties following by dilution with field brine followed by a second shearing step prior to injecting the aqueous fluid into the formation.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: November 11, 1980
    Assignee: Texaco Inc.
    Inventor: Barbara J. Franklin
  • Patent number: 4233166
    Abstract: A process for recovering hydrocarbons from a subterranean formation in which in situ combustion is first initiated in the formation by injection of air, for example, through an injection well, the injection of air is terminated, carbon dioxide or nitrogen is injected into the formation via the injection well to displace unconsumed air and in a final step a mixture of carbon monoxide and hydrogen is injected into the formation where reaction of the carbon monoxide with steam generated from the formation water forms additional hydrogen and carbon dioxide and finally hydrocarbons are recovered via a production well.Optionally, after injection of the mixture of carbon monoxide and hydrogen into the formation has been terminated the heat stored in the formation may be recovered by injecting water as a drive fluid into the formation.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: November 11, 1980
    Assignee: Texaco Inc.
    Inventor: Joseph C. Allen
  • Patent number: 4228019
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of (a) vinyl sulfonic acid alkoxylated with ethylene oxide or a mixture of ethylene oxide and propylene oxide and (b) acrylamide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 14, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4228017
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of (a) vinyl sulfonic acid alkoxylated with 2,3-epoxy-1-propanol and (b) acrylamide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 14, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4228350
    Abstract: An underground logging tool is equipped with a gamma ray detector encircled by a rotatable shield featuring a collimator slot. After the fluid in a formation is activated by a neutron source, the detector is used to obtain radiation count information as a function of horizontal direction as the shield is rotated. Comparison of count rate data as a function of the shield slot orientation gives information concerning the direction of the formation fluid flow. Measurements at different time intervals following the activation of the fluid, made with the shield retracted from the detector, may also be interpreted in terms of speed of horizontal fluid flow past the tool.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: October 14, 1980
    Assignee: Texaco Inc.
    Inventors: Hans J. Paap, Albert P. Richter, Jr., Harold E. Peelman, Dan M. Arnold, Hubert D. Scott
  • Patent number: 4228016
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acrylamide and vinyl sulfonic acid or salts thereof alkoxylated with 2,3-epoxy-1-propanol. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 14, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4228018
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acrylamide and vinyl sulfonic acid or salts thereof alkoxylated with an alkylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 14, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4226731
    Abstract: Hydrocarbons are recovered from subterranean formations by injecting into a hydrocarbon bearing formation via an injection well a fluid comprising water containing a small amount of a water-soluble, sulfonated, ethoxylated polyphenol, forcing the said fluid through the formation and recovering hydrocarbons through a production well. The fluids employed may, if desired, contain an alkaline agent such as sodium hydroxide.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: October 7, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4226730
    Abstract: Hydrocarbons are recovered from subterranean formations by injecting into a hydrocarbon bearing formation via an injection well a fluid comprising water containing a small amount of a water-soluble, sulfated, ethoxylated polyphenol, forcing the said fluid through the formation and recovering hydrocarbons through a production well. The fluids employed may, if desired, contain an alkaline agent such as sodium hydroxide.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: October 7, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4226971
    Abstract: A process for the accelerated cure of an epoxy resin is disclosed. The resulting epoxy resin may be used in protective coatings, adhesives, seamless and terrazo flooring and caulking and sealing compositions. The resulting resin system is also useful, for example, in casting, potting, in escapulating, grouting and patching. The process involves mixing an epoxy resin of the polyhydric phenol, polyglycidyl ether type with a novel accelerator-hardener which is a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: October 7, 1980
    Assignee: Texaco Development Corp.
    Inventors: Harold G. Waddill, Howard P. Klein
  • Patent number: 4223843
    Abstract: An air distribution apparatus for delivering an oxygen-carrying gas such as air to a zone of spent catalyst in a regenerator for the purpose of combusting air with the spent catalyst in order to rejuvenate the catalyst. A header support assembly is adapted for mounting in a regenerator which receives the spent catalyst. A hollow header ring is mounted onto the header support assembly and includes a plurality of openings each having a nozzle mounted therein. Air is supplied to the header support assembly and thus to the hollow header ring at a pressure sufficiently high to effect a maximum desired pressure differential between header pressure and pressure in the zone of spent catalyst to cause maximum uniform air distribution. The nozzles mounted in the openings in the header ring decrease air velocity between nozzle inlet and nozzle outlet in order to provide for maximum uniform air distribution without destruction of the catalyst.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: September 23, 1980
    Assignee: Texaco Inc.
    Inventors: Randlow Smith, John P. MacLean, Dale Williams, Rich W. Barkley, Henry B. Jones
  • Patent number: 4221877
    Abstract: Covers a water-modified diisocyanate mixture obtained from water-treating a diphenylmethane diisocyanate to provide a diisocyanate mixture comprising 3-25 percent by weight of diphenylmethane biuret isocyanate and 75-97 percent diphenylmethane diisocyanate. Also covers the use of said water-modified diphenylmethane diisocyanate in preparing an improved polyurethane or polyisocyanurate polymer. Also covers said polymers.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: September 9, 1980
    Assignee: Texaco Development Corp.
    Inventors: Michael Cuscurida, Robert L. Zimmerman, Bobbie J. Ramey, deceased
  • Patent number: 4220034
    Abstract: Three methods for forming three different, double acting, self-contained swages for joining two small diameter tubes are disclosed. Likewise three double acting small diameter (31/2 inch) combination hydraulic-mechanical swages assembled by the methods are disclosed using hinge arms with indentation tips thereon for deforming and connecting together two small (less than 7 inches or 17.78 centimeters diameter) telescopic tubes for casing repair or a flow line connection, for example. Two of the modifications have links connected to the swaging arms so that with increased pivotal movement of the arm and link, a gain results in the mechanical advantage and indentation force.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: September 2, 1980
    Assignee: Texaco Inc.
    Inventor: Ivo C. Pogonowski
  • Patent number: 4220623
    Abstract: A fluidized catalytic cracking unit wherein cyclone diplegs extend from the reactor vessel into the stripping vessel, for reducing the overall height of the unit. Valve means are provided at the lower end of the diplegs to prevent blow by of gas through the diplegs. The diplegs pass through the vent lines.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: September 2, 1980
    Assignee: Texaco Inc.
    Inventors: Frederick C. Jahnke, John P. MacLean, Dale Williams, John D. Brown
  • Patent number: 4220851
    Abstract: A new and improved gain stabilization system for radioactivity well logging apparatus of the type having a scintillation crystal and optically coupled photomultiplier in a sonde to detect radiation in the borehole and formation elements in response to neutron bombardment. The gain stabilization system includes a light emitting diode driven by a pulser and furnishing scintillations to the photomultiplier, resulting in a stabilization pulse which is furnished to electronic circuitry at the surface for stabilization purposes.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: September 2, 1980
    Assignee: Texaco Inc.
    Inventor: Houston A. Whatley, Jr.