Patents Represented by Attorney James L. Bailey

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  • Long chain alcohol additives for surfactant foaming agents
    Patent number: 5333687
    Abstract: The invention is a method for increasing the effectiveness of steam or carbon dioxide foaming operations for improving conformance during steam or carbon dioxide floods by adding to the surfactant foaming solution an alcohol having about 8 to about 20 carbon atoms in a concentration such that the ratio of alcohol to surfactant in the foaming solution is between about 1:6 and about 1:2.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: August 2, 1994
    Assignee: Texaco Inc.
    Inventor: William T. Osterloh
  • Selective dual gravel pack
    Patent number: 5332039
    Abstract: A method and apparatus allowing sequential production from layers in a well uses a pair of vertically spaced production assemblies formed by packer seal assembly above a respective screen assembly. The production assemblies are spaced on a production pipe string to be substantially aligned with zones to be produced. Isolation tubing allows the lower zone to be produced to depletion when the tubing is then plugged, perforated and the upper zone produced.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: July 26, 1994
    Assignee: Texaco Inc.
    Inventors: Kurt P. Primeaux, John M. Guidry
  • Catalytic process for dewaxing hydrocarbon feedstocks
    Patent number: 5332490
    Abstract: A process for hydrodewaxing a hydrocarbon feedstock boiling above about 350.degree. F. by contacting the feedstock and hydrogen at a hydrogen pressure of from about 300 to about 2000 psig at a temperature of 400.degree. to 900.degree. F. and at a space velocity of about 0.1 to about 10.0 LHSV with a catalyst comprising about 0.1 to about 23 wt. % of an oxide of a Group VIII metal, such as nickel, or an oxide of a Group VIB metal, such as molybdenum; supported on a porous alumina support containing about 50 to about 85 wt. % of a crystalline alumino-silicate zeolite of the ZSM-5 type based on the weight of the support. The catalyst is further characterized by having greater than 60% of the pore volume between 45-600 Angstroms in the 70-200 Angstrom range. The process is especially useful for dewaxing lubricating oil basestocks.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: July 26, 1994
    Assignee: Texaco Inc.
    Inventors: Robert J. Taylor, Jr., Pei-Shing E. Dai, Randall H. Petty, Joseph A. Durkin
  • Electric discharge machine process and fluid
    Patent number: 5332529
    Abstract: An electric discharge machine fluid has been discovered. The fluid comprises a naphthene oil and 0.15 to 0.50 wt % 1,6-hexamethylene bis(3,5-ditertiarybutyl-4-hydroxycinnamate). The fluid was found to increase the breakdown voltage of the fluid and to stabilize oxidative deterioration.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: July 26, 1994
    Assignee: Texaco Inc.
    Inventors: Theodore C. Mead, Douglas H. Culpon, Jr.
  • Recovering polychlorinated biphenyls from solution
    Patent number: 5326467
    Abstract: A method of recovering polychlorinated biphenyls from solution, which comprises a multi-step method of mixing and reacting an alkali metal or alkaline earth hydroxide in glycol solution with polychlorinated biphenyls in non-aqueous solvent to form biphenyl phenoxy-type anions, separating the glycol solution containing biphenyl phenoxy-type anions from the non-aqueous solvent, and separating the biphenyl phenoxy-type anions from the glycol solution.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: July 5, 1994
    Assignee: Texaco Inc.
    Inventors: Robert G. Shong, Robert L. Horton
  • Water soluble polyamide from polyalkylene glycol diamines and polycarboxylic acids
    Patent number: 5324812
    Abstract: Water soluble polyamides may be produced by reacting two different dicarboxylic acids with at least one low molecular weight poly(alkylene glycol) diamine and at least one relatively high molecular weight polyoxyalkylene diamine. One dicarboxylic acid may be of low molecular weight, such as adipic acid and the other of relatively high molecular weight such as C.sub.36 dimer acid. In one embodiment, some dimer acid proportion is preferred. The poly(alkylene glycol) diamine may include triethylene glycol diamine and tetraethylene glycol diamine. The polyoxyalkylene diamine should have at least some ethylene oxide residue therein; for example it may be a polyoxyethylene/polyoxypropylene diamine. The resulting polyamides have a desirable combination of properties, including high strength with water solubility, the latter making the materials easier to work with and very useful.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: June 28, 1994
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Christopher S. Henkee
  • Bicyclo[4.3.0]1,4,7-triazanon-4-ene-one useful in the extraction of precious metals
    Patent number: 5324838
    Abstract: Bicyclo[4.3.0]1,4,7-triazanony-6-ene-5-one may be made easily, in good yield and in one step by reacting diethyl oxalate with a diethylene triamine. The bicyclo[4.3.0]1,4,7-triazanon-6-ene-5-one material made by this process may be used to selectively separate metal ions from solution, or complexed together with a metal ion act as a catalyst. Surprisingly, related bicyclic triazines do not show the ability to complex with metal ions and precipitate them from solution.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: June 28, 1994
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Martin J. Plishka
  • Mild hydrocracking of heavy hydrocarbon feedstocks employing lithia promoted catalysts
    Patent number: 5322616
    Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion and increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 1.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and about 0 to about 5.0 wt. % of an oxide of phosphorus supported on a porous alumina support containing about 0.1 to about 10.0 wt. % of lithium oxide.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: June 21, 1994
    Assignee: Texaco Inc.
    Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Joseph A. Durkin, David E. Sherwood, Jr.
  • Mild hydrocracking of heavy hydrocarbon feedstocks employing silica-alumina catalysts
    Patent number: 5320743
    Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of the 1000.degree. F.+ hydrocarbon fraction to the 1000.degree. F.- fraction and increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 2.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0 to about 3.0 wt. % of an oxide of phosphorus supported on a porous alumina support containing about 4.0 to about 30 wt. % of silica.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: June 14, 1994
    Assignee: Texaco Inc.
    Inventors: Pei-Shing E. Dai, Charles N. Campbell II, Bobby R. Martin, Randall H. Petty
  • Coke shield to protect vent orifice in fluid catalytic cracking direct-connected cyclone apparatus
    Patent number: 5320813
    Abstract: A coke shield is mounted on a reactor cyclone outlet tube spaced above the roof of the cyclone body so as to protect a vent orifice between the cyclone roof and outlet tube from clogging with debris. The coke shield is also provided with a plurality of apertures to prevent any pressure unbalance in the system.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: June 14, 1994
    Assignee: Texaco Inc.
    Inventor: Leonce F. Castagnos, Jr.
  • Oil recovery process employing horizontal and vertical wells in a modified inverted 5-spot pattern
    Patent number: 5320170
    Abstract: A method of recovering hydrocarbons from underground formations by employing a modified inverted 5-spot well pattern, which comprises drilling four substantially horizontal wells located along each of the four sides of an inverted 5-spot vertical well pattern, injecting an oil recovery fluid through the central injection well, producing hydrocarbons and other fluids through the vertical corner production wells, ceasing production through the vertical corner wells, and producing hydrocarbons and other fluids through the horizontal wells.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: June 14, 1994
    Assignee: Texaco Inc.
    Inventors: Wann-Sheng Huang, Jack J. Hsu, Ben N. Wang
  • Heavy naphtha conversion process
    Patent number: 5318689
    Abstract: A straight run naphtha is fractionated to yield on intermediate naphtha and the heaviest 10 vol % as heavy naphtha. The intermediate naphtha is catalytically reformed to yield reformed naphtha having a 90 vol % temperature (T90) of 310.degree. F. (155.degree. C.). The heavy naphtha is subjected to fluid catalytic cracking (FCC) to yield liquid fuel and lighter, including C.sub.4 olefins and a cracked naphtha having a research octane number suitable for gasoline blending.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: June 7, 1994
    Assignee: Texaco Inc.
    Inventors: Hsu-Hui Hsing, Roy E. Pratt
  • Cogeneration of isobutylene plus MTBE from crude t-butanol/methanol feedstocks
    Patent number: 5313006
    Abstract: Disclosed is an improvement in a method for cogeneration of isobutylene and MTBE by etherification of tBA/MeOH over an ion-exchange resin which allows for more complete conversion of the remaining tBA fraction and comprises a second step consisting essentially of recovering the MTBE from the primary fractionator as an overhead fraction and etherifying the bottoms from the primary fractionator over an inorganic acid catalyst comprising a crystalline aluminosilicate faujasite-type Y-zeolite modified with a compound selected from a fluoride-containing compound including hydrofluoric acid, ammonium fluoride, fluorosulfonic acids and their cogeners and triflic anhydride at a temperature of greater than 120.degree. C.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: May 17, 1994
    Assignee: Texaco Chemical Company
    Inventor: John F. Knifton
  • Method and apparatus for automatically transferring and measuring wet steam between priority and secondary users
    Patent number: 5307833
    Abstract: A system by which a supplier of wet steam may allocate and measure the mass flow rate and quality of steam delivered to a demand user and one or more secondary users with the wet steam delivered to each user being measured for purposes of billing. Pressure regulator means between the demand customer and the secondary customers responsive to pressure changes caused by the amount of steam going to the demand customer. The demand customer thus being able to take from 0 to 100% of the steam generator output with the remaining steam being allocated to the secondary customers.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventors: James R. Stoy, James L. G. Schrodt, Stephen S. Wheeler
  • Preparation of polyurethane foam without a tertiary amine catalyst
    Patent number: 5308882
    Abstract: This invention is a molded flexible polyurethane foam containing acid-modified polyoxypropyleneamine comprising a polyol, a polyisocyanate, water, and a crosslinker/catalyst of the formulae: ##STR1## where R' is an alkylene radical having from about 2 to 4 carbon atoms, R" is H or OH and R is H or from about 1 to 6 carbon atoms wherein said compound is present in an amount ranging from about 0.05 to 2.00 weight percent based on the combined weight of the polyol and polyisocyanate and wherein the sole blowing agent is CO.sub.2 resulting from the reaction of the water and the isocyanate or wherein auxiliary blowing agents may also be included and are selected from the group consisting of halogenated low-boiling hydrocarbons (e.g. trichloromono-fluoromethane and dichloromethane), carbon dioxide, and nitrogen or mixtures thereof.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: May 3, 1994
    Assignee: Texaco Chemical Company
    Inventor: Debra A. Washington
  • Mild hydrocracking process using catalysts containing dealuminated y-zeolites
    Patent number: 5308472
    Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion of heavy hydrocarbons boiling above 1000.degree. F. into products boiling below 1000.degree. F. as well as increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 1.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0.1 to about 5.0 wt. % of an oxide of phosphorus supported on a porous support comprising precipitated alumina or silica-containing alumina and hydrogen form, acidified, dealuminated Y-zeolite.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin, David E. Sherwood, Jr.
  • Sample holder for hydrous pyrolysis operations
    Patent number: 5307694
    Abstract: A sample holder for use in hydrous pyrolysis operations has a cylindrical member defining an axial throughbore with like discs of fluid permeable material at each end. One disc is fixed in the cylindrical member and the other removably attached for insertion of a sample into the holder. The holder has at least one end shaped so as to prevent sealing from occurring when the holder is placed in a test chamber.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventors: David G. Nolte, Helen K. Haskin, Edwin L. Colling, Jr.
  • Method and apparatus for automatically transferring and measuring wet steam between priority and secondary users
    Patent number: 5307832
    Abstract: A system by which a supplier of wet steam may allocate and measure the mass flow rate and quality of steam delivered to a demand user and one or more secondary users with the wet steam delivered to each user being measured for purposes of billing. Pressure regulator means between the demand customer and the secondary customers responsive to pressure changes caused by the amount of steam going to the demand customer. The demand customer thus being able to take from 0 to 100% of the steam generator output with the remaining steam being allocated to the secondary customers.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventors: James R. Stoy, James L. G. Schrodt, Stephen S. Wheeler
  • Automatic choke
    Patent number: 5307872
    Abstract: An automatic choke has two piston-cylinder assemblies mounted within a housing having an inlet and an outlet. The piston-cylinder assemblies are connected in a closed hydraulic loop configuration. One piston-cylinder assembly is responsive to pressures at the inlet and the other piston-cylinder assembly controls valve at the outlet.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventor: Jonathan C. Noyes
  • Used lubricating oil reclaiming
    Patent number: 5306419
    Abstract: A used lubricating oil comprising lube oil additives, including zinc dithiophosphate is subjected to reclaiming. Zinc dithiophosphate is thermally decomposed at a temperature of 400.degree. F. (204.degree. C.) to 1000.degree. F. (538.degree. C.) for a residence time of 10 to 120 minutes. The resulting oil is subjected to vacuum distillation. A zinc-free (i.e. ash free by ASTM D-482) distillate oil is useful as marine diesel fuel. About 5 to 25 vol % is recovered as a metal containing bottoms product, useful as asphalt extender. The process is carried out in the absence of chemical demetallizing.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: April 26, 1994
    Assignee: Texaco Inc.
    Inventors: Charles W. Harrison, Arthur G. Gorneau, Robert M. Steinberg, Bruce R. Bond