51
Hendrika Cornelia Kuzee, Hendricus Wilhelmus Carolina Raaijmakers: Method for preventing deposits in oil extraction. Cooperatie Cosun U A, Young & Thompson, September 2, 2003: US06613899 (7 worldwide citation)

Carboxyl-containing fructans such as carboxymethylinulin can be successfully used to prevent deposition of scale composed of, for example, calcium, barium and strontium salts of sulphuric acid and carbonic acid in oil extraction. In the oil extraction method, 0.5-200 ppm of a carboxyl-containing fru ...


52
Richard D Kuerston, Ronald E Brown: Crude oil processing apparatus for heavy oil extraction. Phillips Petroleum Company, Laney Dougherty Hessin & Beavers, February 23, 1993: US05188709 (6 worldwide citation)

The present invention provides an apparatus for preparing and treating a heavy oil extraction solvent. A solvent fraction is separated from a crude oil and combined with a slip stream of rerun solvent taken from an extraction process solvent recycle system. The solvent fraction and rerun solvent are ...


53
Liu Diankui, He Benyuan, Cui Yongqiang: Oil submersible pump. Institut of Engineering Thermophysics of Chinese Academy of Sciences, Antonelli Terry & Wands, September 12, 1989: US04865519 (6 worldwide citation)

A multi-stage centrifugal pump mainly used for oil extraction, which incls two essential components, namely, a rotational impeller comprising several blades and a stationary diffuser. The shapes of blades and flow passages are designed by using three-dimensional flow theory. The configuration is cha ...


54
Colesan Fritz Dipl Ing, Langenbrinck Hans Dipl Ing: Device and process for producing vegetable oil from olives or similar oil holding fruits. Flottweg, December 13, 1995: EP0686353-A1 (6 worldwide citation)

Olives and similar fruit are processed in this plant. It has, in series: cleaning, size reduction, a mill, a mixer, at least one oil extractor and/or de-watering stage for pulp (5) removed from the mixer (4). The oil extractor is a continuously working band press, pref. a sieve band press (25). This ...


55
Rapanelli Ezio: Centrifuge for oil extraction from oily slurries working without addition of drinkable water.. Rapanelli Fioravante, December 15, 1993: EP0574364-A1 (6 worldwide citation)

Horizontal centrifuge comprising a drum (1), a helicoid screw (2, 2a) coaxial to the drum (1) and arranged inside the latter, two closure heads (14, 15) located at the ends of the drum (1) and provided with nozzles (4, 6) for discharging to the outside oil and water/solid remainders respectively and ...


56
Galletti Alfonso: A skimming device for oil-extraction equipment for tanks of coolant fluids with oil in suspension.. Gi Pi, March 6, 1991: EP0415121-A1 (6 worldwide citation)

A skimming device (14) for oil-extraction equipment for tanks (3) of coolant liquids with oil in suspension. comprising a support (15) carrying a hollow cylindrical body of adjustable height (20) on which a float member (23) is slidable axially, the float member having an upper wall (24) which commu ...


57
Carcagno Gabriel E, Toscano Rita G, Nakamura Hisao, Coppola Tommaso, Ono Tatsuo: Threaded tube joint. Tenaris Connections, Carcagno Gabriel E, Toscano Rita G, Nakamura Hisao, Coppola Tommaso, Ono Tatsuo, GERVASI Gemma, March 18, 2004: WO/2004/023020 (6 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 ...


58
Dean Blankenburg, Clayton Lepak, Dave Parkinson: Oil extraction method and composition for use in the method. Hydrite Chemical Co, Quarles & Brady, July 28, 2015: US09090851 (5 worldwide citation)

A composition is disclosed for aiding extraction of an emulsified oil from an oil and water emulsion. The composition includes silicon containing particles at a level of 0.1 wt. % to 30 wt. %; an emulsifying agent at a level of 1 wt. % to 30 wt. %; and water at a level of 40 wt. % to 99 wt. %. A met ...


59
Seyi A Odueyungbo: Thermal treatment system for spent hydroprocessing catalyst. Chevron U, Steven R Ellinwood, June 25, 2013: US08470252 (5 worldwide citation)

A process to upgrade heavy oil and convert the heavy oil into lower boiling hydrocarbon products is provided. The process employs a catalyst slurry comprising catalyst particles with an average particle size ranging from 1 to 20 microns. In the upgrade process, spent slurry catalyst in heavy oil is ...


60
Michael B Davis, John J Dugan, James D Eagan, Adrianus Welmers: Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery. Exxon Research and Engineering Company, Joseph J Allocca, James H Takemoto, May 27, 1997: US05632867 (5 worldwide citation)

In a solvent recovery plant including a recovery or distillation tower from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone, is used to separate liquid phase contaminant (i.e. oil in a lubricating oil extraction process) in overhead product and to feed the ...



Click the thumbnails below to visualize the patent trend.