Patents Assigned to Intevep, S.A.
  • Patent number: 5229347
    Abstract: A catalyst suitable for mild-hydrocracking of cracked petroleum hydrocarbon feedstocks and selective to diesel fuels contains a catalytically active metal phase constituted by a Group VI-B element, a Group VIII first transition series element and a Group VIII second transition series element, all supported on a titania-alumina support containing about 5% to about 30% by weight titania in the support. The support is prepared by combining titanium oxide and aluminum oxide hydrogels, in appropriate proportions, followed by extrusion, drying, and calcination. The catalytically active metal phase is introduced onto the support by impregnation followed by drying and calcination. The catalytically active metal phase is then sulfided. The produced catalyst is suitable for hydrodesulfurization, hydrodenitrogenation, mild-hydrocracking and aromatics hydrogenation of previously cracked petroleum hydrocarbon feedstocks.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: July 20, 1993
    Assignee: Intevep, S.A.
    Inventors: Ricardo Prada, Roberto Galiasso, Yilda Romero, Edito Reyes, Richard Munoz
  • Patent number: 5226492
    Abstract: A well installation is disclosed which has a production casing set in a subterranean well; a production tubing disposed within the production casing; an annular space defined between the production casing and the production tubing; and a packer for sealing the annular space, the packer having: a hollow metallic sleeve disposed on the production tubing, the hollow metallic sleeve having an inner cavity, the inner cavity being open at one end; an expandable member, contained within the inner cavity of the hollow metallic sleeve and extending from the open end of the inner cavity; and a wedge member disposed on the production tubing and contacting the expandable member, whereby compression of the packer causes radial expansion of the expandable member and of the hollow metallic sleeve, and whereby a first seal is formed between the production casing and the expandable member and a second seal is formed between the production casing and the cone-shaped hollow sleeve.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: July 13, 1993
    Assignee: Intevep, S.A.
    Inventors: Jose M. Solaeche P., Jesus R. Rodriguez
  • Patent number: 5212139
    Abstract: A method for preparing a catalyst for conversion of methane to higher hydrocarbons, discloses the steps of forming a mixture of a manganese aqueous solution and an oxidative agent aqueous solution in an inorganic oxide support material; varying a pH value of the mixture between acidic and basic values to obtain a precipitate of manganese oxide; drying the manganese oxide precipitate; impregnating the dried manganese oxide precipitate with a promoter to obtain an impregnated solid; drying the impregnated solid; and calcining the impregnated solid until a surface atomic ratio of promoter to manganese is at least 5. The catalyst so acquired may be contacted with a methane gas to obtain stable conversion values over extended reaction times.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: May 18, 1993
    Assignee: Intevep, S.A.
    Inventors: Cesar Ovalles, Nora Urbano, Francisco Rosa
  • Patent number: 5210326
    Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated alumina medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated alumina mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: May 11, 1993
    Assignee: Intevep, S.A.
    Inventors: Marco A. Marquez, Jose C. Gonzalez, Victor J. Degouveia, Francisco Yanez
  • Patent number: 5209295
    Abstract: A method for lowering the viscosity of a heavy hydrocarbon in situ in a well formation so as to improve well production wherein the heavy hydrocarbon has an API gravity in the range between 6.degree. and 12.degree. and a dynamic viscosity in the range between 300 and 900 centipoises @ 195.degree. F. comprising lowering the viscosity of a virgin heavy hydrocarbon outside of a well formation wherein said heavy hydrocarbon has an API gravity in the range between 6 and 12 degrees and a dynamic viscosity above 300 centipoises @ 195.degree. F. so as to make pumpable with conventional pumping equipment comprising mixing said hyrdocarbon at a temperature range between 400.degree. and 500.degree. F. with steam and an additive selected.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: May 11, 1993
    Assignee: Intevep, S.A.
    Inventors: Rafael E. Campos, Jose A. Hernandez
  • Patent number: 5161574
    Abstract: A check valve assembly is disclosed wherein a valve closure means includes a guide means and a connector means as a composite member for use in a pipline or conduit inclined to the vertical. The mass of the composite member relative to the angle of inclination and the coefficient of friction between the internal surface of the valve body and the external surface of the guide means is such that there is no risk of valve "jamming" action which would block operation of the valve. In addition the guide means ensures symmetrical fluid flow whereby the valve operates positively and rapidly eliminating chatter and erratic travel during the course of opening and closing when fluid flow is reversed.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: November 10, 1992
    Assignee: Intevep, S.A.
    Inventors: Jesus E. Chacin, Amnon M. Vadasz F.
  • Patent number: 5132583
    Abstract: Piezoresistive material, useful as a sensing agent for mechanical deformation undergone by pieces or structures when they support loads during their normal operation, consists essentially of a substantially homogeneous solid mixture of three or more components, including a piezoresistive element, a conducting element and a binding element. Said piezoresistive material is also useful for manufacturing various transducers, the function of which is based on elastic deformation.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: July 21, 1992
    Assignee: Intevep, S.A.
    Inventor: Victor Chang
  • Patent number: 5131466
    Abstract: The present invention is drawn to an inlet valve assembly for a subsurface sucker rod operated reciprocating piston pump and, more particularly an inlet valve assembly which is locked in its closed position when the pump is in its unanchored, non-pumping position within the production tube of a deep well. When the subsurface piston pump is anchored within the production tube of the deep well of the inlet valve assembly is freely movable between open and close positions upon reciprocation of the piston.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: July 21, 1992
    Assignee: Intevep, S.A.
    Inventors: Jesus E. Chacin U., Amnon M. Vadasz F.
  • Patent number: 5129689
    Abstract: A pipe union device and method in which terminal ends of well casing, well production tubing or drill pipe are connected in fluid type fashion by stressing compressively a spacer disposed between terminal ends of adjacent lengths of tubing.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: July 14, 1992
    Assignee: Intevep, S.A.
    Inventors: Milagro Newski, Alejandro Newski, Olegario Rivas
  • Patent number: 5114458
    Abstract: A fertilizer composition characterized by high mechanical resistance and anti-caking properties comprises a compound selected from the group consisting of urea, ammonium sulphate, nitrogen-potassium-phosphorus granulates, mono-ammonic phosphate, di-ammonic phosphate, potassium chloride and mixtures thereof admixed with a hydrosoluble lignate salt selected from the group consisting of sodium lignates, alkaline metal lignates, ammonium lignates, and mixtures thereof in an amount of between 0.1 to 5.0 wt. % in the final fertilizer composition.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: May 19, 1992
    Assignee: Intevep S.A.
    Inventors: Jose R. Castillo, Marilu S. de Liendo
  • Patent number: 5109713
    Abstract: A method and apparatus for treating gas samples containing sulfur comprises dehydrating the gas sample so as to obtain a dried gas sample having a water content of less than 100 ppm and thereafter storing the dried gas sample in a container which is non-reactive to sulfur in the gas.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: May 5, 1992
    Assignee: Intevep, S.A.
    Inventors: Irene Romero, Rui Rodrigues
  • Patent number: 5100299
    Abstract: A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid through the valve body.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: March 31, 1992
    Assignee: Intevep, S.A.
    Inventors: Amnon M. Vadasz F., Jesus E. Chacin U.
  • Patent number: 5062451
    Abstract: A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid through the valve body.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: November 5, 1991
    Assignee: Intevep, S.A.
    Inventors: Amnon M. Vadasz F., Jesus E. Chacin U.
  • Patent number: 5062480
    Abstract: The present invention is drawn to an inlet valve assembly for a subsurface sucker rod operated reciprocating piston pump and, more particularly an inlet valve assembly which is locked in its closed position when the pump is in its unanchored, non-pumping position within the production tube of a deep well. When the subsurface piston pump is anchored within the production tube of the deep well of the inlet valve assembly is freely movable between open and close positions upon reciprocation of the piston.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: November 5, 1991
    Assignee: Intevep, S.A.
    Inventors: Jesus E. Chacin U., Amnon M. Vadasz F.
  • Patent number: 5054960
    Abstract: Floating barriers are provided with containment means (doublecoated with polyvinyl chloride) of woven twisted nylon thread and with low density polyurethane floating means. The two previous characteristics, along with a change in arrangement, size and shape of other means in current barriers, have surprisingly improved properties, such as wear resistance and use versatility, even under extreme conditions.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: October 8, 1991
    Assignee: Intevep, S.A.
    Inventors: Rafael Manzano, Anderson Chaviel
  • Patent number: 5051156
    Abstract: An electrocatalytic process for the partial oxidation of methane employs an electrocatalyst in the form of a deposit catalyst comprising an electrode having a conducting catalyst layer deposited thereon. The catalyst comprises an element selected from the group consisting of Group IB metals, Group VIB metals, Group VIII metals and mixtures thereof.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: September 24, 1991
    Assignee: Intevep, S.A.
    Inventors: Benjamin Scharifker, Omar Yepez, Juan Carlos De Jesus, Maria M. Ramirez De Agudelo
  • Patent number: 5048604
    Abstract: The invention is drawn to an improved inlet valve assembly for use in subsurface sucker rod operated reciprocating piston pumps. The inlet valve or standing valve is locked in the closed position when the pump is unanchored from the production tubing to prohibit passage of fluid into the pump barrel.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: September 17, 1991
    Assignee: Intevep, S.A.
    Inventors: Amnon M. Vadasz F., Jesus E. Chacin U.
  • Patent number: 5047218
    Abstract: A process which reduces the amount of sulfur compounds present in a feed gas is disclosed. A gas containing sulfur compounds is admixed with an ozone-containing gas. This admixture is then contacted with a scrubbing composition to obtain a gas and a product solution. The gas exhibiting a significant reduction in sulfur compounds as compared to the feed gas. The product solution yields a sulfate-containing compound.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: September 10, 1991
    Assignee: Intevep, S.A.
    Inventors: Pedro C. Ortega, Dino V. Brunasso, Luis M. Cabrera V.
  • Patent number: 5044395
    Abstract: A multiple plug check valve for use in a process for pumping a two-phase mixture is designed so as to minimize pressure drop across the valve thereby maximizing flow of fluid through the valve body.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: September 3, 1991
    Assignee: Intevep, S.A.
    Inventor: Ammon M. Vadasz F.
  • Patent number: 5015535
    Abstract: The present invention relates to a ferrous article suitable for use in devices for burning heavy and extra heavy petroleum fuels and a process for forming such an article. The article has a matrix formed from a low carbon steel and a corrosion resistant chromium-aluminum diffusion coating on at least one surface. The coating is formed by subjecting the matrix to successive aluminization and chromization pack cementation treatments.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: May 14, 1991
    Assignee: Intevep, S.A.
    Inventors: Edmundo M. Marquez, Jean-Francois Nowak, Antonio Robles