61
Thomas F Scarfone: Method and apparatus for changing lubricating oil in a rotary compressor. Carrier Corporation, February 9, 1993: US05184944 (5 worldwide citation)

A rotary compressor having a sealed case containing a motor and a compressing device has a vertically extending rotor shaft that extends from the top of the case to the bottom. The bottom of the case forms a lubricating oil sump and the rotor shaft has a longitudinally extending through opening whic ...


62
Laurent Prouvost, Michael I Economides: Matrix treatment process for oil extraction applications. Dowell Schlumberger Incorporated, Stephen A Littlefield, September 5, 1989: US04862962 (5 worldwide citation)

The matrix treatment of a subterranean formation is adjusted in real time to minimize formation damage as indicated by the skin factor. The process comprises initial injecting an inert fluid into the formation and observing the variation in injection pressure over time. During the matrix treatment w ...


63
Edgard E Y Azoulay: Process for the preparation of viscous water by action of micro-organisms. Dumas & Inchauspe, Fleit Jacobson & Cohn, August 23, 1983: US04400466 (5 worldwide citation)

Viscous water for use in oil extraction is produced continuously by bacterial action. A carbohydrate substrate, nitrogen-containing mineral salts and growth factors are introduced into a first fermenter chamber containing bacteria of the genus Rhizobium capable of excreting polysaccharides having vi ...


64
Barns Roy W: Continuous process for drying and extracting oils from solid materials. The French Oil Mill Machinery Company, Sommer & Sommer, February 18, 1975: US3867416 (5 worldwide citation)

A continuous drying and oil extraction process and apparatus wherein counterflow is established between successive vertical beds of stratified oil bearing particles in an extractor and ascending vapor solvent which passes upwardly through the beds agitating the particles therein to produce successiv ...


65
Hendrika Cornelia Kuzee, Hendricus Wilhelmus Carolina Raaijmakers: Method for preventing deposits in oil extraction. Cooperatie Cosun U A, Young & Thompson, September 2, 2003: US06613899 (5 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 ...


66
Brad J Challacombe: Apparatus for stimulating oil extraction by increasing oil well permeability using specialized explosive detonating cord. Bradley J Challacombe, Steins & Associates P C, May 11, 2004: US06732799 (5 worldwide citation)

Apparatus and method for explosive and chemical rehabilitation of existing oil wells' perforations and formation, to stimulate oil production therefrom, comprising a combination of detonating cord with a plurality of hardened steel tubes, disposed at predetermined distances thereabout, effectua ...


67
Kotlar Hans Kristian: Method of enhancing oil recovery. Statoilhydro Asa, Kotlar Hans Kristian, Cockbain Julian, COCKBAIN Julian, December 31, 2008: WO/2009/001098 (5 worldwide citation)

The invention provides a method of enhancing oil recovery from a subterranean hydrocarbon reservoir, said method comprising injecting into said reservoir through a matrix injection section of a well a microorganism capable of digesting oil, and recovering oil from an oil receiving section of a produ ...


68
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 (5 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 ...


69
Rodger T Marentis: Pressure regulated supercritical fluid fractionation of oil seed extraction materials. MOR Supercritical, Craig R Miles, CR Miles P C, March 27, 2012: US08142830 (4 worldwide citation)

Generally, a method of pressure regulated supercritical fluid fractionation of oil seed extraction materials which can be utilized to refine oil seed extraction material established in an amount of supercritical fluid. Specifically, a method of pressure regulated supercritical fluid fractionation of ...


70
John Nenniger, Steve Conzuorgood, Lowy Gunnewiek, Bob Reid, Emil Nenniger: Method and apparatus for testing heavy oil production processes. N Solv Corporation, Vidas Arrett & Steinkraus P A, June 1, 2010: US07727766 (4 worldwide citation)

There is disclosed a method of testing oil extraction processes including the steps of: 1) placing a sample to be tested in a sample holder which has a configurable temperature profile; 2) placing the sample holder in a pressure vessel; 3) increasing the pressure in the pressure vessel to simulate a ...



Click the thumbnails below to visualize the patent trend.