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Gabriel Carcagno, Rita G Toscano, Hisao Nakamura, Tommaso Coppola, Tatuso Ono: Threaded tube joint. Tenaris Connections, Fitzpatrick Cella Harper & Scinto, August 14, 2007: US07255374 (17 worldwide citation)

A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface (11) placed at its end near the thread and engages, for sealing, a corresponding frusto-conical sealing surface (12) wherein the toroidal sealing surface (11) has a radius Rs value comprised wit ...


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Colin G Grieves, Robert J Baechle, John M Considine, Lawrence M Bristow: Process for treating sour water in oil refineries. Amoco Corporation, Thomas W Tolpin, William H Magidson, Ralph C Medhurst, May 24, 1988: US04746434 (17 worldwide citation)

Sour process water from an oil refinery is partially treated by oil extraction. The partially treated water can be biologically treated, upgraded and further purified in a cooling tower, trickle filter, and/or activated sludge tank.


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Suau Jean Marc, Jacquemet Christian, Mongoin Jacques, Gane Patrick A C: Use of weakly anionic polymers as dispersing and-or grinding agents for aqueous suspensions of pigments and-or mineral fillers used in paper-making, oil extraction industry and production of paints and plastics. Coatex, December 21, 2001: FR2810261-A1 (17 worldwide citation)

Water-soluble weakly anionic copolymer comprises ethylenically unsaturated anionic monomers with mono-carboxylic, di-carboxylic, sulfonic, phosphoric or phosphonic groups, non-ionic ethylenically unsaturated monomer, (meth)acrylamide or (meth)acrylate type monomer(s) and doubly ethylenically unsatur ...


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Harold W Scott: Oil extraction method. Winton Corporation, August 21, 1979: US04164978 (16 worldwide citation)

A method is provided for recovering oil from an oil bearing earth formation by means of electrohydraulic shock waves generated in a liquid by capacitor electrical discharge means and supplemented with ultrasonic waves.


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NENNIGER JOHN, CONQUORGOOD STEVE, GUNNEWIEK LOWY, REID BOB, NENNIGER EMIL: CHAMBRE DESSAI DEXTRACTION DE PETROLE LOURD A PROFIL DE TEMPERATURE CONFIGURABLE ET COMMANDE DE RETROACTION, HEAVY OIL EXTRACTION TEST CHAMBER WITH CONFIGURABLE TEMPERATURE PROFILE AND FEEDBACK CONTROL. NENNIGER JOHN, CONQUORGOOD STEVE, GUNNEWIEK LOWY, REID BOB, NENNIGER EMIL, N SOLV CORPORATION, PIASETZKI NENNIGER KVAS, June 11, 2013: CA2436158 (16 worldwide citation)

A method of testing oil extraction processes is shown. The method includes the steps of placing a sample to be tested in a sample holder which has a configurable temperature profile. The sample holder is then placed in a pressure vessel and the pressure in the pressure vessel is increased to simulat ...


26
Daniel Sango: Process for pumping a gas/liquid mixture in an oil extraction well and device for implementing the process. Societe Nationale Elf Aquitaine, Bacon & Thomas, December 22, 1992: US05173022 (15 worldwide citation)

The present invention relates to a process for pumping a two-phase gas/liquid mixture in an extraction well (11) whose initial gas percentage is greater than approximately 40% by volume, characterized in that it consists:


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Koki Horikoshi, Ichiro Shibanai, Takashi Kato: Process for the oil extraction from oil sand by using cyclodextrin and hydrocarbon solvents. Rikagaku Kenkyusho, Ichiro Shibanai, Bucknam and Archer, April 17, 1984: US04443323 (15 worldwide citation)

Process for the oil extraction from oil sand comprising: mixing oil sand, cyclodextrin, a hydrocarbon solvent, a flocculating agent and water with one another to prepare a suspension, leaving the suspension to stand or centrifuging it to separate into an oil, a water and a sand layer, and then colle ...


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Nenniger John: Methode et appareil pour favoriser une production de petrole accrue, Method and apparatus for stimulating heavy oil production. Nenniger John, N Solv Corporation, PIASETZKI & NENNIGER, January 9, 2007: CA2235085 (15 worldwide citation)

A method and apparatus for stimulating heavy oil production from an oil bearing formation. The method includes the steps of placing a downhole heater in the formation adjacent to the oil producing zone to heat heat transfer fluid and then energizing the downhole heater. The method further includes t ...



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