Patents Assigned to Societe Nationale Elf Aquitaine
  • Device for measuring fluid flows through a porous body
    Patent number: 5065421
    Abstract: Device for measuring by gammagraphy fluid flows, in particular in drilling cores of porous media originating from oil fields, said device being used under field conditions. The device comprises a tubular body, the outer part of which is permeable to radiation, and which is held between tie rods, and a piston at one end, the sample being placed at the other end inside a flexible sleeve between the piston and a fixed support. The lateral wall of the tubular body is lined with a thin inner metal liner permeable to radiation.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: November 12, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Yves Morineau, Rino Begani
  • Process for the preparation of a catalyst capable of promoting the oxidative conversion of methane into higher hydrocarbons and use of catalyst
    Patent number: 5061670
    Abstract: A process is provided for the preparation of a catalyst which is particualrly active and selective in the oxidative conversion of methane into higher hydrocarbons and especially into C.sub.2.sup.+ hydrocarbons.In the process, an aqueous phase containing in solution cations of at least one metal of the lanthanide group and cations of at least one alkaline-earth metal, is brought into contact with a sufficient quantity of a source of carbonate ions or hydroxide ions to form a coprecipitate of carbonates and/or of hydroxycarbonates of the metals, the pH of the resulting reaction medium is brought to a value higher than 8, a coprecipitate is separated from the reaction medium, subjected to a washing operation, then to a drying operation and the washed and dried coprecipitate is subjected to calcination.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: October 29, 1991
    Assignee: 501 Societe Nationale Elf Aquitaine
    Inventors: Christian Forquy, Didier Tichit, Didier Anglerot
  • Device for producing cold and/or heat by a solid-gas reaction
    Patent number: 5057132
    Abstract: Device for producing cold and/or heat by a solid gas reaction comprising a first and a second reactor each of which contains a salt capable of reacting by absorption with a gas by an exothermic reaction, the first reactor being in communication in a first operating stage with an enclosure intended to retain the gas, the second reactor being in communication, in the first operating stage, with an enclosure intended to release the gas, according to the invention, each reactor comprises a different salt. A device comprising four reactors provided with three different salts is also described.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: October 15, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Michel Lebrun, Michel Mayslich, Bernard Spinner
  • Method and apparatus for conducting a thermochemical absorption and desorption reaction between a gas and a solid
    Patent number: 5056591
    Abstract: A method is provided of conducting a thermochemical absorption or desorption reaction between a gas and a solid in the presence of a heat-carrying fluid in a closed enclosure. This method comprises a first step in which, for the pressure prevailing in the reactor, the variation of the mean power of the reaction is determined as a function of the difference which exists between the temperature of the heat-carrying fluid and the equilibrium temperature of the reaction, given by the Clapeyron diagram, for defining an optimum zone in which the reaction takes place with maximum mean power, and a second step in which the reaction takes place, in which a reference temperature is imposed on the heat-carrying fluid such that the reaction takes place in the optimum zone.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: October 15, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Bernard Spinner, Sylvain Mauran, Alain Roca, Marianne Balat
  • Additives to lubricants resulting from the condensation of an alkylene polyamine with a copolymer containing vicinal carboxylic groups
    Patent number: 5055213
    Abstract: The invention relates to additives to lubricants resulting from the condensation of a primary or secondary amine and/or of an alkylene polyamine with a copolymer containing vicinal carboxylic groups.Derivatives of phenothiazine, or naphthylamine and of diphenylamine are employed in most cases as alkylene polyamine.These compounds can be employed as multifunctional additives to lubricants.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: October 8, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Laurent Germanaud, Nguyen Truong-Dinh, Gilbert Marie, Patrick Turello
  • Organic phosphorus compounds complexed to boron, their preparation and applications
    Patent number: 5043465
    Abstract: New organic phosphorus compounds, comprised of hetero-phosphacycloalkanes whose phosphorus atom forms a complex with a borane. They can be prepared by the action of a borane on a hetero-phosphacycloalkane, within a solvent, at temperatures ranging from -20.degree. to +60.degree. C. Their transformation into other derivatives, phosphinites or phosphines in particular, can be carried out without any modification in the chirality of the initial complex. An especially useful application is their conversion into highly optically active phosphines, used in particular as catalysts in various reactions.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: August 27, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Sylvain Juge, Jean-Pierre Genet
  • Process for the simultaneous detection of several gases in a gaseous mixture, and equipment for using the process
    Patent number: 5040895
    Abstract: Process and interferometric device for detecting and measuring the concentration, in a single operation, of all gases, having almost periodic absorption structures, contained in a gaseous mixture, each of the gases being associated with a characteristic path difference. Luminous flux is analyzed after passage through a cell containing the mixture, using to a multiple-wave interferometer, for example, a Fabry-Perrot interferometer, in which the inside faces of plates therein are highly reflective, and one of which plates is displaceable at a constant speed, it thus being possible to sweep a very wide range of path difference. Analysis of the output signal is performed frequency band by frequency band, by seeking the maximum.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: August 20, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Dominique Laurent, Gerard Fortunato
  • Interferometric sensor and use thereof in an interferometric device
    Patent number: 5032026
    Abstract: Pressure and temperature are sensed with first and second interferometers having beam paths originating at an optical fiber located at a collimating lens focal point. One interferometer includes a deformable membrane having a deformation responsive to the sensed pressure and temperature which cause the membrane position to vary with respect to a face of a glass plate. In the second interferometer the optical path length varies as a function of the sensed temperature. The collimating lens collects optical beams derived from the first and second interferometers and supplies them to the optical fibre. In one embodiment, the interferometers are coaxial and in parallel; in a second embodiment the interferometers are in series.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: July 16, 1991
    Assignee: Societe Nationale Elf Aquitaine Production Tour Elf
    Inventors: Philippe Jouve, Jacques Pouleau, Francois-Marie Robert, Xavier Desforges
  • Catalytic removal of hydrogen sulfides from liquid sulfur
    Patent number: 5030438
    Abstract: The invention is a catalytic process for removing H.sub.2 S and hydrogen polysulfides from liquid sulfur. The process comprises mixing a heterocyclic compound with the liquid sulfur and removing the hydrogen sulfide from the liquid sulfur by contact with a gas which is inert to the liquid sulfur at the treating temperature.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: July 9, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Robert Voirin, Andre Pepy
  • Connection for pipes of composite materials
    Patent number: 5028081
    Abstract: A connection system for pipes made of composite material where each pipe end has an inner sleeve with a radial lip overlapping the pipe end, an outer sleeve attached to each pipe end and a threaded sleeve engaging threads on the outer sleeves to urge the radial lips into engagement.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: July 2, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventor: Rene Fournier
  • Cell for sampling and storing fluid deposits
    Patent number: 5024110
    Abstract: The rear face of the piston (7) and the corresponding inner face of the pump body (1,2,3,4) are complementarily shaped so as to make the volume of the rear chamber (31) of the cell as small as possible, and, when the cell is in the storing position, the unit of the two front (32) and rear (31) chambers is insulated from the outside by a high-efficiency seal (3a,6a) which is formed automatically when the piston (7) arrives in the storing position.Measurements of the thermodynamic characteristics of the fluid deposits.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: June 18, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Roger Doussiet, Louis Labadie
  • Process for production of an electrochemical sub-assembly comprising an electrode and an electrolyte, and the sub-assembly obtained in this way
    Patent number: 5019469
    Abstract: The invention relates to an electrochemical sub-assembly comprising a positive electrode and a solid polymer electrolyte. The solid polymer electrolyte is composed of a salt in solution in a macromolecular material. The electrode is composed of the product of agglomeration in a composite mass of a material with ion conduction, composed of a salt in solution in a macromolecular compound of an electrochemically active material and an electron condutor material. The electrode and the electrolyte layers possess good adhesion to one another and do not possess any preferential orientation of the chains of the macromolecular material at the electrolyte/electrode interface.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: May 28, 1991
    Assignees: Societe Nationale Elf Aquitaine, Hydro-Quebec
    Inventor: Daniel Muller
  • Method of assisted production of an effluent to be produced contained in a geological formation
    Patent number: 5016710
    Abstract: The present invention provides a system and method for producing an effluent contained in a geological formation forming a reservoir for said effluent or producing formation, including a central well, at least one subhorizontal drain as well as a displacing or displacement agent, the displacement agent being injected into the formation either from the central well or from the subhorizontal drain and the displacement agent causes migration of the effluent to be produced.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: May 21, 1991
    Assignees: Institut Francais du Petrole, Societe Nationale Elf Aquitaine (Production)
    Inventors: Gerard Renard, Jean-Francois Giannesini
  • Catalytic process for removal of hydrogen sulfides from liquid sulfur
    Patent number: 5004591
    Abstract: The invention is an improved catalytic process for removing H.sub.2 S and sulfanes from liquid sulfur and a catalyst system for carrying out the process. The catalyst comprises a basic component and a surfactant component.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: April 2, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Jacques Maurice, Romain Fouque, Jean-Louis Auriol
  • Process for the production of lower dialkyl disulphides
    Patent number: 5001269
    Abstract: The invention relates to the production of dialkyl disulphides of the R-SS-R type where R represents an alkyl radical having from 1 to 3 carbon atoms, by oxidation of the corresponding alkyl mercaptan R--SH by sulphur in the presence of a catalyst.A combination of an alkyl mercantap R'--SH with an alkylene oxide and an alkaline base is used as catalyst, R' representing an alkyl radical having from 6 to 18 carbon atoms.This catalyst enables a lower dialkyl disulphide of excellent quality to be obtained (absence of amine and coloration).
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: March 19, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Henri Gongora, Yves Darche
  • Synthesis of benzyl mercaptan
    Patent number: 5001271
    Abstract: This invention relates to the preparation of benzyl mercaptan by reacting benzyl chloride and ammonium sulfhydrate.In the process according to the invention, the reaction is carried out under autogenous pressure in a closed reactor in two steps. The first comprises adding the benzyl chloride to an aqueous solution of ammonium sulfhydrate at a temperature below 80.degree. C. The second comprises heating the reaction mixture to a temperature in the range 80.degree. to 100.degree. C.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: March 19, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventor: Yves Labat
  • Method of using a thermal shock probe, a thermal shock probe usable in the method and application of this method
    Patent number: 4994394
    Abstract: The present invention provides a method of using a thermal shock probe, such a thermal shock probe and application of this method to the control of a heat pump. The method of using a thermal shock probe formed of a thermocouple associated with a heating element, is characterized in that it is used for monitoring, in a solid-gas reactor (1,2), the chemical reaction between a porous mixture and a gas by applying a heat flux variation and processing the response of the thermocouple.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: February 19, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Jean-Luc Oms, Jacques Prosdocimi, Maurice Comtat
  • Separator for two non-miscible liquids
    Patent number: 4990246
    Abstract: The present invention relates to a separator for two liquids which are not miscible, consisting of a cylindrical casing (1) in which there are active capacities (9, 10) and passive capacities (8, 35), the passive capacities (8, 35) being disposed at each of the ends of the direction of circulation (FF) of the liquid in the cylinder and serving either as a tranquilizing zone or as a decantation zone or as a buffer zone, at least two active capacities (9, 10) being connected by a common skimmer disposed in the center of the cylindrical casing (1), the active capacities (9, 10) being disposed between the passive capacities (8, 35) and being provided with a rotor-stator assembly (13, 14) adapted to carry out separation by induced air.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: February 5, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Jean Blazejczak, Luc Delons
  • Chlorination system for a water to be treated
    Patent number: 4986902
    Abstract: A system for chlorination of a fluid to be treated, which includes a container containing trichlorocyanuric acid in a solid and compact form, a first pipe for supplying the container with dissolving fluid, an evacuation pipe in which the chlorinated fluid circulates, connecting the container to a pipe which contains the fluid to be treated, a chlorine analyzer connected to the pipe and which includes a mechanism for continuously measuring the amount of active chlorine in the treated fluid and released constantly by direct contact of the fluid to be treated with a surface of the trichlorocyanuric acid; and a flow rate regulation mechanism connected to a supply and including a mechanism to for constantly varying a continuous flow rate of the dissolving fluid passing into the container as a function of the amount of active chlorine present in the treated fluid and measured by the chlorine analyzer.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: January 22, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventor: Pierre Serna
  • Device for the seismic monitoring of an underground deposit
    Patent number: 4986350
    Abstract: For seismic monitoring of a petroleum deposit at least one signal receiving unit is fixed to an outside of a casing pipe before the casing plate is cemented in a borehole passing through the monitored zone.At least one housing, defined by projecting elements, (longitudinal members, stops), is provided along an outer surface of the casing pipe, with the where the reception unit being embedded and fixed therein so as to protect the reception unit from shocks or compressive forces which may occur during lowering of the pipe into the well. Each reception unit comprises a support assembly with cavities for sensors, electronic cards for amplifying the signals delivered by the sensors and a sealed external case which is easy to position and which is held firmly in position by embedment in the housing. A multiconductor cable is used, for example, for connecting the reception unit to the surface.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: January 22, 1991
    Assignees: Institut Francais du Petrole, Total Compagnie Francais des Petroles, Compagnie Generale de Geophysique, Service Nationale Dit: Gaz de France, Societe Nationale Elf Aquitaine
    Inventor: Jean Czernichow