Patents by Inventor Waldemar Maciejewski
Waldemar Maciejewski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120104128Abstract: A method and a mix box for mixing oil sand and water to form a substantially uniformly mixed oil sand slurry is provided. The mix box has an open top end for receiving pre-crushed oil sand and water and a sloped bottom end having a discharge outlet and includes a plurality of profiled shelves positioned within the mix box. The substantially uniformly mixed oil sand has a substantially uniform flow distribution and therefore, when screened, reduces uneven wear on the screens.Type: ApplicationFiled: November 2, 2011Publication date: May 3, 2012Applicant: SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude ProjectInventors: BARRY BARA, ALAN FERRE, CHRIS MOONEY, JOHN DIEP, DARWIN KIEL, CHAD LARSON, WALDEMAR MACIEJEWSKI
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Patent number: 7481318Abstract: An aqueous aerated oil sand slurry is conditioned in a pipeline and then spun within an elongate vessel of circular cross-section, to cause bitumen droplets in the slurry to coalesce. This increases the probability that the droplets will become aerated by contact with air bubbles. The slurry is then subjected to separation of the sand and bitumen.Type: GrantFiled: October 16, 2003Date of Patent: January 27, 2009Assignees: AEC Oil Sands, L.P., Canadian Oil Sands Commercial Trust, Canadian Oil Sands Limited, Comocophillips Oilsands PartnershipII, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company Ltd., Nexen Inc., Petro-Canada Oil And GasInventors: Barry Bara, Michael Lipsett, Waldemar Maciejewski, Samson Ng
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Publication number: 20050082205Abstract: An aqueous aerated oil sand slurry is conditioned in a pipeline and then spun within an elongate vessel of circular cross-section, to cause bitumen droplets in the slurry to coalesce. This increases the probability that the droplets will become aerated by contact with air bubbles. The slurry is then subjected to separation of the sand and bitumen.Type: ApplicationFiled: October 16, 2003Publication date: April 21, 2005Inventors: Barry Bara, Michael Lipsett, Waldemar Maciejewski, Samson Ng
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Patent number: 6119870Abstract: A large capacity cyclonic separator is used for desanding a conditioned aqueous oil sand slurry comprising aerated bitumen, water and sand to produce pumpable, pipelineable lean froth and sand tailings. The cyclone separator is a vessel which forms an elongated cylindrical separation chamber and has a tangential slurry inlet at one end and, at the opposite end, a peripheral sand removal outlet and a centrally positioned vortex finder. Oil sand slurry is continually tangentially introduced into the cyclone separator to form a rotating vortex, which generates a centrifugal force. The lean froth migrates to the center of the vortex to form an inner core and is removed via the vortex finder. The sand tailings migrate to the outer reaches of the vortex and are co-currently is removed via the sand removal outlet.Type: GrantFiled: September 9, 1998Date of Patent: September 19, 2000Assignees: AEC Oil Sands, L.P., AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments, Inc., Canadian Occidental Petroleum Ltd., Canadian Oil Sands Investments, Inc., Gulf Canada Resources Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company, Ltd., Petro-CanadaInventors: Waldemar Maciejewski, George Cymerman
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Patent number: 6076753Abstract: A large, mechanically agitated pump box is used between a mixer, for mixing oil sand and water to produce a slurry, and a pipeline for conveying the slurry to a processing facility. Prior to the aqueous slurry being discharged into the pump box from the mixer, it is screened to reject large solids. The oversize is directed to an impactor where it is comminuted and the comminuted product is screened again prior to being discharged into the pump box. The pump box is designed to increase the residence time of the slurry in the pump box and to separate the slurry into two phases, the suspended slurry and the larger lumps that cannot be suspended. The larger lumps that settle in the pump box are recycled to the impactor for comminution.Type: GrantFiled: July 6, 1999Date of Patent: June 20, 2000Assignees: AEC Oil Sands, L.P., AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments Inc., Canadian Occidental Petroleum Ltd., Canadian Oil Sands Investments Inc., Gulf Canada Resources Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company Ltd., Petro-CanadaInventors: Waldemar Maciejewski, George Cymerman, Jim McTurk, Derrick Kershaw
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Patent number: 6027056Abstract: A mixer circuit, in the form of a vertically oriented stack of components, functions to slurry oil sand with water in preparation for pumping through a pipeline. The oil sand is initially dropped from the end of a conveyor. It is contacted in mid-air with a stream of water to distribute the water through the oil sand and to wet the latter. The mixture drops into a downwardly slanted trough. The water and oil sand mix as they move turbulently through the open-ended trough. The slurry is deflected as it leaves the trough and is spread in the form of a thin sheet on an apron. It is then fed over screens to reject oversize lumps. The screened slurry drops into a pump box. The rejected lumps are comminuted in an impactor positioned at the end of the screens. The comminuted oil sand is screened to remove remaining oversize lumps and the screened comminuted oil sands are delivered into the pump box. The structure is compact and the oversize reject loss is relatively low.Type: GrantFiled: January 20, 1998Date of Patent: February 22, 2000Assignees: Alberta Energy Ltd., AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments, Inc., Canadian Occidential Petroleum, Ltd., Canadian Oil Sands Investments, Inc., Gulf Canada Resources Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company, Ltd., Petro-Canada, Inc.Inventors: Waldemar Maciejewski, Jim McTurk, Derrick Kershaw
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Patent number: 5954277Abstract: A large, mechanically agitated pump box is used between a mixer, for mixing oil sand and water to produce a slurry, and a pipeline for conveying the slurry to a processing facility. Prior to the aqueous slurry being discharged into the pump box from the mixer, it is screened to reject large solids. The oversize is directed to an impactor where it is comminuted and the comminuted product is screened again prior to being discharged into the pump box. The pump box is designed to increase the residence time of the slurry in the pump box and to separate the slurry into two phases, the suspended slurry and the larger lumps that cannot be suspended. The larger lumps that settle in the pump box are recycled to the impactor for comminution.Type: GrantFiled: January 27, 1998Date of Patent: September 21, 1999Assignees: AEC Oil Sands, L.P., Athabasca Oil Sands Investments Inc., Canadian Occidental Petroleum Ltd., Canadian Oil Sands Investments Inc., Gulf Canada Resources Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company Ltd., Petro-CanadaInventors: Waldemar Maciejewski, George Cymerman, Jim McTurk, Derrick Kershaw
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Patent number: 5772127Abstract: A mixer circuit, in the form of a vertically oriented stack of components, functions to slurry oil sand with water in preparation for pumping through a pipeline. The oil sand is initially dropped from the end of a conveyor. It is contacted in mid-air with a stream of water to distribute the water through the oil sand and to wet the latter. The mixture drops into a downwardly slanted trough. The water and oil sand mix as they move turbulently through the open-ended trough. The slurry is deflected as it leaves the trough and is spread in the form of a thin sheet on an apron. It is then fed over screens to reject oversize lumps. The screened slurry drops into a pump box. The screened slurry drops into a box. The rejected lumps are comminuted in an impactor positioned at the end of the screens. The comminuted oil sand is screened to remove remaining oversize lumps and the screened comminuted oil sands are delivered into the pump box. The structure is compact and the oversize reject loss is relatively low.Type: GrantFiled: January 22, 1997Date of Patent: June 30, 1998Assignees: Alberta Energy Ltd, AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments, Inc., Canadian Occidential Petroleum, Ltd., Canadian Oil Sands Investments, Inc., Gulf Canada Resources Limited, Imperial Oil Resources Limited, Mocal Energy Limited, Murphy Oil Company, Ltd., Petro-Canada, Inc.Inventors: Waldemar Maciejewski, Jim McTurk, Derrick Kershaw