Patents Assigned to Conoco
  • Method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock in the presence of a molten metal halide catalyst
    Patent number: 4247385
    Abstract: A method for hydrocracking a heavy polynuclear hydrocarbonaceous feedstock to produce lighter hydrocarbon fuels by contacting the feedstock with hydrogen in the presence of a molten metal halide catalyst, the method comprising: mixing the feedstock with a heavy naphtha fraction which has an initial boiling point from about 100.degree. to about 160.degree. C. with a boiling point difference between the initial boiling point and the final boiling point of no more than about 50.degree. C.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: January 27, 1981
    Assignee: Conoco, Inc.
    Inventor: Everett Gorin
  • Drilling fluid circulation system
    Patent number: 4247312
    Abstract: A drilling fluid circulation system for containing drilling cuttings, gas and drilling fluid in a closed loop. The system includes a separator having two sealed compartments, one for settling out drilling cuttings and one for holding clean drilling fluid. A fine solids separator is provided between the two compartments, and a gas exhaust line for conducting gas released from the returning drilling fluid is provided to conduct the produced gas to a safe location away from the working area. A solids discharge device is provided for removing settled drilling cuttings.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: January 27, 1981
    Assignee: Conoco, Inc.
    Inventors: Pramod C. Thakur, Charles E. Mason, Stephen D. Lauer, Emrys H. Jones, Jr.
  • Method of transporting viscous hydrocarbons
    Patent number: 4246920
    Abstract: An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water, certain specific surfactants and a basic material to the hydrocarbon. The resulting emulsion has a much lower viscosity and is more easily transported.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: January 27, 1981
    Assignee: Conoco, Inc.
    Inventor: Gifford G. McClaflin
  • Reactor apparatus
    Patent number: 4246237
    Abstract: A reactor apparatus for hydrocracking a polynuclear aromatic hydrocarbonaceous feedstock to produce lighter hydrocarbon fuels by contacting the hydrocarbonaceous feedstock with hydrogen in the presence of a molten metal halide catalyst.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: January 20, 1981
    Assignee: Conoco, Inc.
    Inventor: J. Paul Echtler
  • Anti-static vinyl chloride polymers
    Patent number: 4246168
    Abstract: This invention relates to anti-static vinyl chloride polymer compositions and a method of preparing such compositions.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: January 20, 1981
    Assignee: Conoco, Inc.
    Inventor: Wayne R. Sorenson
  • Single package additive for thermoplastic formulation
    Patent number: 4244746
    Abstract: A friable composition single additive package for thermoplastic extrusions is provided in the instant invention. The friable composition can contain paraffin waxes, calcium stearate, various pigments, fillers, lubricants, and stabilizers.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: January 13, 1981
    Assignee: Conoco, Inc.
    Inventors: Paul H. Washecheck, Ron G. Hale
  • Sample pyrolysis oven
    Patent number: 4244917
    Abstract: A pyrolysis oven for derivation of pyrolysis products from a selected sample which utilizes a tube within a tube structure of quartz glass for controlled sample heating preparatory to applying pyrolysis products for subsequent analysis. The apparatus includes a dual input helium supply to both the sample tube and oven tube with derived pyrolysis products delivered through a heated zone to the analyzing apparatus.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: January 13, 1981
    Assignee: Conoco, Inc.
    Inventors: Roger A. Woods, Harry Dembicki, Jr.
  • Downhole riser assembly
    Patent number: 4240506
    Abstract: A downhole riser assembly includes a tubular casing embedded in the ocean floor, said casing having a constant internal diameter and an upper end extending above said ocean floor. A tubular riser pipe is disposed in the casing and has an upper end connected to a floating vessel which may be a tension leg platform. The casing and riser are rigidly connected at a considerable distance below the ocean floor, said distance being on the order of 100 feet. When the floating structure is laterally displaced from a position directly above the casing, the riser pipe contacts the upper end of the casing. This contact limits the lateral deflection of the riser at the ocean floor and thereby limits the stresses in the riser.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 23, 1980
    Assignee: Conoco, Inc.
    Inventor: Donald W. Dareing
  • Method of transporting viscous hydrocarbons
    Patent number: 4239052
    Abstract: An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water containing an effective amount of a combination of an ethoxylated alkyl phenol and a low molecular weight alkaryl sulfonate. The resulting emulsion has a lower viscosity and is more easily transported.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 16, 1980
    Assignee: Conoco, Inc.
    Inventor: Gifford G. McClaflin
  • Barium oxide catalyzed ethoxylation
    Patent number: 4239917
    Abstract: Barium oxide is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes. The reaction is carried out at temperatures of from about 200.degree. to about 500.degree. F. to yield the ethoxylated product. The product obtained has a very narrow, high adduct distribution with low levels of by-products and unreacted free alcohols. Calcium and magnesium oxides show no catalytic effect.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: December 16, 1980
    Assignee: Conoco, Inc.
    Inventor: Kang Yang
  • Flushing fluid for centrifugal pumps used in the pipelining of slurries
    Patent number: 4239422
    Abstract: In methods for transporting an aqueous slurry of particulate solids in a pipeline wherein the aqueous slurry has an effective viscosity greater than water and is pumped through the pipeline by at least one centrifugal pump wherein a flushing fluid is used to maintain the bearing surfaces in the centrifugal pump free of particulate solids, an improvement comprising; the use of a thickened aqueous flushing fluid having a viscosity equal to at least about 80 percent of the viscosity of the aqueous slurry.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: December 16, 1980
    Assignee: Conoco, Inc.
    Inventor: James T. Clancey
  • Undersea sand filter for cleaning injection water
    Patent number: 4238335
    Abstract: A submarine sand filter is employed to filter water for uses requiring lack of solid contaminants, such as oil reservoir injection. The filter is provided with backwash means and allows an efficient use of differential pressure heads.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: December 9, 1980
    Assignee: Conoco, Inc.
    Inventor: R. Leroy Grimsley
  • Method and apparatus for sonic velocity type water cut measurement
    Patent number: 4236406
    Abstract: In a method and apparatus for metering water content in an oil-water system by determining sonic velocities in the flowing oil-water mixture, and thereafter determining flow rate to provide individual oil and water rates which may then be integrated to provide oil and water volume of flow, the improvement comprising self-calibrating for salt content of the system water by measuring the speed of sound in the water phase only and utilizing the measured value in determinations of the system water cut.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: December 2, 1980
    Assignee: Conoco, Inc.
    Inventors: Philip W. Reed, John D. Alexander
  • Removal of anionic surfactants from water
    Patent number: 4235712
    Abstract: A method of removing specific water-soluble anionic surfactants from water is disclosed. Briefly, the method comprises forming an emulsion by adding a nonionic surfactant and a hydrocarbon to the water and anionic surfactant. The emulsion is broken, with the anionic and nonionic surfactant being present in the hydrocarbon layer.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: November 25, 1980
    Assignee: Conoco, Inc.
    Inventor: Gifford G. McClaflin
  • Preparation of 5-t-butyl alkyl-substituted phenols
    Patent number: 4236031
    Abstract: A process for preparing 5-t-butyl alkylphenols from alkylphenols in high selectivity is disclosed, wherein the starting alkylphenol is a 3-alkylphenol or a 2,3-dialkylphenol and the alkyl group is a C.sub.1 -C.sub.6 primary alkyl. The process comprises reacting a 3-alkylphenol or a 2,3-dialkylphenol, wherein the alkyl group is a C.sub.1 -C.sub.6 primary alkyl, with isobutylene in the presence of a catalyst, which is a sulfonated polystyrene crosslinked with divinylbenzene, at a temperature of at least 100.degree. C.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: November 25, 1980
    Assignee: Conoco, Inc.
    Inventor: John R. Dodd
  • Method for producing premium coke from residual oil
    Patent number: 4235703
    Abstract: A petroleum refinery residual oil derived from a naphthenic crude oil is catalytically demetalized, catalytically desulfurized and then fed to a delayed coker to produce premium delayed coke.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: November 25, 1980
    Assignee: Conoco, Inc.
    Inventors: William H. Kegler, James R. McConaghy
  • Preparation of 6-t-butyl alkyl-substituted phenols
    Patent number: 4236032
    Abstract: A process for preparing 6-t-butyl alkylphenols from alkylphenols in high selectivity is disclosed, wherein the starting alkylphenol is a 3-alkylphenol or a 2,3-dialkylphenol and the alkyl group is a C.sub.1 -C.sub.6 primary alkyl. The process comprises reacting a 3-alkylphenol or a 2,3-dialkylphenol, wherein the alkyl group is a C.sub.1 -C.sub.6 primary alkyl, with isobutylene in the presence of a catalyst, which is a sulfonated polystyrene crosslinked with a divinylbenzene, at a temperature of 50.degree. to 90.degree.C.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: November 25, 1980
    Assignee: Conoco, Inc.
    Inventor: John R. Dodd
  • Permanent cobalt catalyst for sulfite oxygen scavenging
    Patent number: 4231869
    Abstract: In the recovery of hydrocarbons from petroliferous formations wherein water is injected into the formation through a borehole, oxygen is scavenged from water employed in recovery applications requiring low oxygen levels by mixing with a source of sulfite ion, said mixture then being passed over a cation exchange resin on which a cobalt ion or other metallic catalyst is adsorbed. The catalyst increases the reaction rate of the sulfite ion and the oxygen to form sulfate ion, while the resin maintains the cobalt in place.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: November 4, 1980
    Assignee: Conoco, Inc.
    Inventors: Bob L. Carlberg, Robert A. Hart
  • Polymeric electrical conductance dependent upon electrical potential
    Patent number: 4230604
    Abstract: Polymers can be made semi-conductors by incorporating ionic metallic salts into said polymers, such that conductance levels rise more rapidly than normal as electrical potential increases. These salts are useful at levels of at least 0.007% by weight based on the total compound weight, said salts imparting a geometrically increased level of conductance as the applied electrical potential proportionally increases.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Conoco, Inc.
    Inventor: James A. Wingrave
  • Chemicals for treatment of PVC
    Patent number: 4229598
    Abstract: Butylation of a mixture of xylenols and trimethylphenols gives a product which is suitable for use as a stabilizer for polyvinyl chloride. The material can be added to the reactor during polymerization as a short-stopper and retain effectiveness as a stabilizer in the finished polymer.
    Type: Grant
    Filed: December 14, 1978
    Date of Patent: October 21, 1980
    Assignee: Conoco, Inc.
    Inventors: Dean R. Weimer, Charles M. Starks