Patents Represented by Attorney Jack H. Park
  • Patent number: 5573725
    Abstract: A series of water-dispersible and oil-dispersible corrosion inhibiting solutions are disclosed which comprise about 10 ppm by volume to about 5% by volume of an acid catalyzed condensation reaction product of a fatty acid and a polythioether polyol represented by the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H, a methyl group, or an ethyl group, X is a divalent organic radical selected from the group consisting of --C.sub.2 H.sub.4 --, --C.sub.4 H.sub.8 --, --C.sub.2 C.sub.4 OC.sub.2 H.sub.4 --, and C.sub.2 H.sub.4 SC.sub.2 H.sub.4 --, and n is about 2 to about 40. Metal equipment can be protected through the use of the invention corrosion inhibiting solutions by contacting metal with an effective amount of inhibiting solution containing the polythioether polyol/fatty acid reaction product in a continuous exposure or batch treatment.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: November 12, 1996
    Assignee: Texaco Inc.
    Inventor: Michael J. Incorvia
  • Patent number: 5298618
    Abstract: Macrocyclic oxamides may be made easily, in good yield and in one step by reacting an oxalic compound, such as oxalic acid or oxalic esters, with a diamine, where the amine groups are separated by at least five atoms. The oxalic compounds may include, but are not limited to such materials as dimethyl oxalate and diethyl oxalate. The diamines may include, but are not limited to such materials as alkylenediamines; polyalkylene glycol diamines; alkyl-bis-(aminoalkyl)amines; imino bis-(alkyl)amines; and N,N' bis-(aminoalkyl)-N,N'-dialkylalkylenediamines and bis-(aminoalkyl)piperazines; and mixtures thereof. The macrocyclic oxamides 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.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: March 29, 1994
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Donald H. Champion, Martin J. Plishka
  • Patent number: 5293939
    Abstract: Disclosed are methods for treating wells to form a permeable barrier around the well for consolidating unconsolidated mineral particles such as sand in a subterranean petroleum formation penetrated by a well, or for forming an impermeable barrier for fluid entry control, or for plugging the well for abandonment. A fluid containing a polymerizable resin such as furfuryl alcohol oligomer or monomer, a polar organic diluent such as butyl acetate a dense solvent having density greater than the resin density, and an oil soluble acid catalyst to cause polymerization of the resin at formation temperatures is prepared. The dense solvent is bromobutane, bromobenzene, furfural, tetrachloroethane, tetrachloroethylene, tetrabromoethane, 1,2,4 trichlorobenzene and 1,2,3 tribromopropane or mixtures thereof. The amount of dense solvent is selected to ensure that the treating fluid density is greater than the density of the formation fluid, preferably at least 10 greater than the density of the formation fluid.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: March 15, 1994
    Assignee: Texaco Chemical Company
    Inventors: Billy W. Surles, Philip D. Fader
  • Patent number: 5286884
    Abstract: A method and apparatus for continuously catalytically exothermally reacting propylene with tertiary butyl hydroperoxide in a reaction mixture stream comprising a tertiary butyl alcohol solution of catalyst, reacting propylene, reacting tertiary butyl hydroperoxide, propylene oxide and reaction by-products by thermosyphonically circulating the reaction mixture stream around a thermosyphonic reactor loop; continuously removing heat from the circulating stream in a downflow heat exchange zone in the reactor and continuously passing the circulating stream of reaction mixture through an adiabatic zone such as an upflow reaction zone of progressively increasing temperature while withdrawing or displacing a product stream in an amount sufficient to maintain a predetermined volume of reaction mixture in the reactor and whereby the density of the reaction mixture in the heat exchange zone will be greater than the density of the reaction mixture in the adiabatic zone whereby continuous thermosyphonic circulation can be
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Chemical Company
    Inventors: Roderick S. Cowley, Darrell D. Kinzler
  • Patent number: 5285849
    Abstract: Disclosed are methods for treating wells to form a permeable barrier around the well for consolidating unconsolidated mineral particles such as sand in a subterranean petroleum formation penetrated by a well, or for forming an impermeable barrier for fluid entry control, or for plugging the well for abandonment. A fluid containing a polymerizable resin such as furfuryl alcohol, a polar organic diluent such as butyl acetate and an oil soluble acid catalyst to cause polymerization of the resin at formation temperatures is prepared. The acid should have a pK in the range of 0.4 to 6.0. The acid and acid concentration are selected to cause the polymerization reaction to be essentially complete in from 0.75 to 4.0 hours and preferably 1.0-2.0 hours at the formation temperature. Usually the selected acid concentration will be in the range of from 0.2 to 5.0 percent. This fluid is injected into the formation to saturate at least a portion of the formation adjacent to the well.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Inc.
    Inventors: Billy W. Surles, Robert H. Friedman
  • Patent number: 5284206
    Abstract: Disclosed are processes for treating a subterranean formation to improve the permeability distribution by reducing the permeability in high permeability zones, so fluids injected for oil recovery purposes will sweep more uniformly through the formation. The processes involve injecting a polymerizable compound, preferably a monomer or oligomer of furfuryl alcohol, together with a diluent, preferably an ester such as butyl acetate, and a suitable acid catalyst for the formation conditions, generally toluenesulfonic acid. The fluid may be injected in a liquid phase or mixed with steam or non-condensable gas to form an aerosol, which is injected then into the formation prior to the injection of the oil recovery fluid, which may be water, surfactant fluid, polymer fluid, or steam.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: February 8, 1994
    Assignee: Texaco Inc.
    Inventors: Billy W. Surles, Philip D. Fader, Carlos W. Pardo
  • Patent number: 5264132
    Abstract: Disclosed is a method for removing ammonia, organic amines and alkaline impurities from waste water which comprises using a partially spent ion exchange resin which no longer meets the purity requirements for the production of MTBE, washing the catalyst with water, contacting it with waste water for a an adequate period and removing the purified filtrate.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: November 23, 1993
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Edward T. Marquis
  • Patent number: 5254513
    Abstract: Spent or inactive alumina-supported catalysts removed from a catalytic hydrotreating process and having carbonaceous and metallic deposits thereon are reactivated. After a solvent wash to remove process oils, the spent catalyst is contacted with steam at a temperature of 1000.degree. to about 1250.degree. F. for a period of about 2 to about 5 hours to form a reactivated catalyst suitable for reuse in a catalytic hydrotreating process. Optionally, the steam-treated catalyst can be regenerated by contact with an oxygen-containing gas at a temperature of about 700.degree. to about 900.degree. F. to remove carbon deposits from the catalyst, or, alternatively, the steam-treated catalyst can be acid-leached to remove undesired metals and then contacted with an oxygen-containing gas at an elevated temperature to remove carbon deposits.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: October 19, 1993
    Assignee: Texaco, Inc.
    Inventors: David E. Sherwood, Jr., Johnnie R. Hardee, Jr.
  • Patent number: 5253321
    Abstract: A fiber optic probe mounting assembly has an inner assembly which receives an optical fiber cable and holds it in a sealed alignment. The inner assembly is sealingly received in an outer assembly which is provided with means for attachment to a pressure vessel.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: October 12, 1993
    Assignee: Texaco Inc.
    Inventors: Stephen L. Long, David L. Gebert, Frank M. Rexach, Gregory A. Winslow, Dale F. Brost
  • Patent number: 5251662
    Abstract: Steam quality at both outlets of a T junction is maintained equal to that of the inlet by variably controlling the pipe cross sectional area according to the ratio of vapor flow rates through the respective outlet legs.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: October 12, 1993
    Assignee: Texaco Inc.
    Inventors: Mark T. Rubel, James R. Stoy
  • Patent number: 5251698
    Abstract: A sacrificial agent method employing lignosulfonate-acrylic acid graft copolymers to reduce chemical loss to the formation during hydrocarbon recovery by surfactant system injection and sweep through an underground formation.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: October 12, 1993
    Assignee: Texaco Inc.
    Inventors: George Kalfoglou, Grover S. Paulett
  • Patent number: 5250104
    Abstract: Separation of wet steam into its liquid and vapor phases is facilitated prior to encountering a junction. The separated phases are recombined as the steam exits the respective arms of the junction.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: October 5, 1993
    Assignee: Texaco Inc.
    Inventors: Eric L. Berger, James R. Stoy, Mark T. Rubel, James L. G. Schrodt
  • Patent number: 5250185
    Abstract: A method of treating an aqueous charge liquid, such as oilfield produced waters, containing boron and solubilized hydrocarbon compounds to reduce boron concentration, which comprises water softening to remove substantially all divalent cations, raising the pH of the liquid above about 9.5, and driving the liquid through a reverse osmosis membrane.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: October 5, 1993
    Assignee: Texaco Inc.
    Inventors: Fansheng T. Tao, Paul F. Pilger, Charles A. Dyke
  • Patent number: 5251286
    Abstract: A method for determining rock formation permeability from wireline well logs utilizes neural networks. The neural networks provide consistency, accuracy and overall quality without bias to the calculations.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: October 5, 1993
    Assignee: Texaco, Inc.
    Inventors: Jacky M. Wiener, Robert F. Moll, John A. Rogers
  • Patent number: 5249863
    Abstract: A temperature averaging data logger measures temperature at regular intervals and continually displays the average of the measured temperatures. Upon being reset, the data logger displays the number of days since the last reset, the instant temperature, and then commences its temperature averaging mode.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: October 5, 1993
    Assignee: Texaco Inc.
    Inventor: Winthrop K. Brown
  • Patent number: 5249891
    Abstract: An apparatus for guiding camera systems and the like subsea from a platform has a running tool and a guideline holder. These components are detachably assembled and the first runs and retrieves the second which connects guidelines to some fixed subsea point.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: October 5, 1993
    Assignee: Texaco Inc.
    Inventor: William W. Pecue, II
  • Patent number: 5246071
    Abstract: A method of staggered scheduling of injection and/or production into and from alternate rows of injection and/or production wells in hydrocarbon formations penetrated by multiple 5-spot, inverted 5-spot, 7-spot or 9-spot well patterns.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: September 21, 1993
    Assignee: Texaco Inc.
    Inventor: Chieh Chu
  • Patent number: 5243118
    Abstract: An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using sulfate-activated molecular sieves as catalyst.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: September 7, 1993
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, John F. Knifton, Edward T. Marquis
  • Patent number: 5243091
    Abstract: A method for the preparation of methyl tertiary butyl ether is provided wherein a mixture of methanol and substantially peroxides-free tertiary butyl alcohol are catalytically reacted to form a reaction product that is separated into a first lighter distillation fraction comprising isobutylene, methanol and methyl tertiary butyl ether and a second heavier distillation fraction comprising methanol, tertiary butyl alcohol and water, wherein the first distillation fraction and a first recycle isobutylene fraction are reacted to form an isobutylene conversion product that is charged, together with recycle isobutylene to a methanol extraction zone and countercurrently contacted with water to provide an overhead extract comprising aqueous isobutylene, and wherein the isobutylene is recovered and recycled.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: September 7, 1993
    Assignee: Texaco Chemical Company
    Inventors: Charles J. Kruse, Rei-Yu J. Hwan, Kyle L. Preston, Feng-Ran Sheu
  • Patent number: 5243100
    Abstract: A method for preparing tertiary butyl alcohol wherein a solution of a tertiary butyl hydroperoxide feedstock comprising a solution of tertiary butyl hydroperoxide in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of a mixture of a soluble cycloalkenyl iron compound with a soluble ruthenium compound, and is brought into contact with the catalyst in liquid phase with agitation under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: September 7, 1993
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, John F. Knifton