Patents by Inventor Mahendra Joshi
Mahendra Joshi 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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Patent number: 8920636Abstract: Methods for transporting bitumen extraction product include providing bitumen-laden aromatic solvent, providing bitumen-laden paraffinic solvent, and blending the two materials. The resulting mixture can be transported through existing pipeline infrastructure and can use existing separation processing equipment, and thereby avoids the need for separate infrastructure for each composition. Combining the two compositions can also avoid undesirable asphaltene precipitation.Type: GrantFiled: June 15, 2012Date of Patent: December 30, 2014Assignee: Shell Canada Energy and Chervon Canada LimitedInventors: Julian Kift, Mahendra Joshi
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Patent number: 8877044Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of first solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating first solvent-wet tailings, adding a quantity of second solvent to first solvent-wet tailings to separate a first quantity of first solvent component from the first solvent-wet tailings and thereby producing second solvent-wet tailings, and adding a quantity of water to the second solvent-wet tailings to separate a first quantity of second solvent component from the second solvent-wet tailings and thereby forming solvent-dry, stackable tailings.Type: GrantFiled: November 30, 2010Date of Patent: November 4, 2014Assignee: Shell Canada Energy Cheveron Canada LimitedInventors: Willem P. C. Duyvesteyn, Mahendra Joshi, Julian Kift, Dominic J. Zelnik, Whip C. Thompson, Cherish M. Hoffman
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Patent number: 8636958Abstract: A nozzle reactor includes a passage having one or more regions with a converging-diverging shape. The nozzle reactor accelerates a reacting fluid to supersonic velocities and mixes it with a feed material. The reacting fluid and the feed material may be pre-heated. The high speed collision between the reacting fluid and the feed material at elevated temperatures causes the materials to react.Type: GrantFiled: September 7, 2011Date of Patent: January 28, 2014Assignee: Marathon Oil Canada CorporationInventors: Jose Armando Salazar-Guillen, Mahendra Joshi, Christopher Ard
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Publication number: 20130341245Abstract: A hydrocarbon upgrading method is described. The method can generally include a step of providing a nozzle reactor, a step of injecting hydrocarbon residuum into the feed passage of the nozzle reactor, and a step of injecting a cracking material into the main passage of the nozzle reactor, and a step of collecting a product stream exiting the exit opening of the main passage of the nozzle reactor. The hydrocarbon residuum used in the method can be obtained from a hydroconversion-type upgrader, such as an ebullating bed hydrocracker.Type: ApplicationFiled: June 25, 2012Publication date: December 26, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar-Guillen, Mahendra Joshi, Dominic J. Zelnik
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Patent number: 8586515Abstract: A process for producing biofuels and biolubricants from lipid material includes reacting lipid material with a motive fluid in a reactor. The reactor may be configured to cause a high energy collision between the motive fluid and the lipid material that facilitates the reactions that result in biofuels and biolubricants. A heavy fraction of the effluent may be repeatedly recycled back through the reactor until most, if not all, of the lipid material has been converted.Type: GrantFiled: October 25, 2010Date of Patent: November 19, 2013Assignee: Marathon Oil Canada CorporationInventors: Jose Armando Salazar-Guillen, Mahendra Joshi
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Publication number: 20130251597Abstract: A nozzle reactor includes a passage having one or more regions with a converging-diverging shape. The nozzle reactor accelerates a reacting fluid to supersonic velocities and mixes it with a feed material. The reacting fluid and the feed material may be pre-heated. The high speed collision between the reacting fluid and the feed material at elevated temperatures causes the materials to react.Type: ApplicationFiled: February 7, 2013Publication date: September 26, 2013Applicant: MARATHON CANADIAN OIL SANDS HOLDING LIMITEDInventors: Jose Armando Salazar, Mahendra Joshi, Christopher Daniel Ard, Dominic J. Zelnik
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Publication number: 20130206405Abstract: Methods and systems for in situ extraction of bitumen from deposits of bitumen-containing material are described. The methods and systems can generally include establishing freeze walls within the deposit of bitumen-containing material to establish a confined zone into which solvents can be injected in order to extract bitumen from the bitumen-containing deposits. Different types of solvents can be sequentially injected in order to extract bitumen and also help reduce the amount of solvent left behind in the deposit.Type: ApplicationFiled: August 13, 2012Publication date: August 15, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi
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Publication number: 20130206647Abstract: A process for separating bitumen from bitumen ore material includes extracting bitumen with a hydrocarbon solvent to produce a bitumen-enriched solvent phase and tailings. The tailings are dried or stripped in a dryer to remove any remaining hydrocarbon solvent. The amount of solvent discharged in the tailings may be less than 4 bbl per 1000 bbl of recovered bitumen.Type: ApplicationFiled: August 13, 2012Publication date: August 15, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi, Cherish M. Hoffman, Whip C. Thompson
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Publication number: 20130105361Abstract: A nozzle reactor system for increasing the conversion rate of material feed injected into the nozzle reactor system. The system includes two or more nozzle reactors aligned in parallel. A main stream of material to be upgraded is divided such that one stream is produced for each nozzle reactor in the system. Each nozzle reactor includes an interior reactor chamber and an injection passage and material feed passage that are each in material injecting communication with the interior reactor chamber. Furthermore, the injection passage is aligned transversely to the injection passage. The injection passage is configured to accelerate cracking material passed therethrough to a supersonic speed. The product produced from each of the nozzle reactors is combined into one product stream.Type: ApplicationFiled: October 29, 2012Publication date: May 2, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar, Mahendra Joshi, Christopher Daniel Ard
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Publication number: 20130105362Abstract: Methods and systems for integrating bitumen extraction processes with bitumen upgrading processes are disclosed. The methods and systems can include recovering an emulsion of hydrocarbon and water from a Steam Assisted Gravity Drainage extraction process, breaking the emulsion, using the water from the emulsion to make steam, upgrading the hydrocarbon from the emulsion using the steam, separating diluent from the upgraded hydrocarbon, and using the diluent to break SAGD-produced emulsion.Type: ApplicationFiled: November 1, 2012Publication date: May 2, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar, Mahendra Joshi
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Publication number: 20130092599Abstract: Methods and systems of upgrading hydrocarbon material, such as bituminous material, are described. The methods and systems can reduce or eliminate the need for the use of atmospheric and/or vacuum distillation towers by instead using clyconic separation apparatus. The methods and systems can include the use of one or more cyclonic separation apparatus aligned in series in order to separate out a high boiling point fraction of the hydrocarbon material and then upgrading the high boiling point hydrocarbon material in a nozzle reactor.Type: ApplicationFiled: October 15, 2012Publication date: April 18, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar, Mahendra Joshi, Dominic J. Zelnik
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Publication number: 20130058835Abstract: A nozzle reactor includes a passage having one or more regions with a converging-diverging shape. The nozzle reactor accelerates a reacting fluid to supersonic velocities and mixes it with a feed material. The reacting fluid and the feed material may be pre-heated. The high speed collision between the reacting fluid and the feed material at elevated temperatures causes the materials to react.Type: ApplicationFiled: September 7, 2011Publication date: March 7, 2013Applicant: MARATHON OIL CANADA COMPANYInventors: Jose Armando Salazar-Guillen, Mahendra Joshi, Christopher Ard
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Publication number: 20130048539Abstract: Methods and systems for upgrading hydrocarbon are described. The system can include a combustor and a nozzle reactor. The combustor can be used to produce a motive fluid suitable for use in the nozzle reactor. The motive fluid produced by the combustor and a hydrocarbon stream can be injected into the nozzle reactor to upgrade the hydrocarbon material. The systems and methods can also be integrated with a steam assisted gravity drainage system.Type: ApplicationFiled: August 23, 2012Publication date: February 28, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar, Mahendra Joshi, Thomas Edward Carter
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Publication number: 20130043033Abstract: Methods and systems for upgrading hydrocarbon on offshore platforms are described. Hydrocarbon material can be extracted from deposits under bodies of water and upgraded on offshore platforms, such as through the use of one or more nozzle reactors. The upgraded hydrocarbon material produced by the nozzle reactor, can than be transported back to shore through pipelines, in part due to the improved viscosity of the upgraded material.Type: ApplicationFiled: August 20, 2012Publication date: February 21, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Jose Armando Salazar, Mahendra Joshi, Thomas Edward Carter
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Publication number: 20130026077Abstract: A bitumen extraction method can include the use of a two or more mixing drums aligned in series for spraying solvent over bituminous material and/or tailings loaded in the mixing drums while the mixing drums rotate. Such mixing can result in the dissolution of bitumen into the solvent, which then allows for the separation of a “dilbit” stream from the bituminous material.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Mahendra Joshi, Julian Kift, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik
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Publication number: 20130026078Abstract: Methods for preparing solvent-dry, stackable tailings. The method can include the steps of adding a first quantity of solvent to a bitumen material to form a first mixture, separating a first quantity of bitumen-enriched solvent from the first mixture and thereby creating solvent-wet tailings, and adding a quantity of water to the solvent-wet tailings to separate a solvent component from the solvent-wet tailings and thereby forming solvent-dry, stackable tailings. The solvent used in the methods can include paraffinic solvent, such as pentane.Type: ApplicationFiled: July 26, 2012Publication date: January 31, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Mahendra Joshi, Julian Kift, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik
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Publication number: 20130025861Abstract: A method for carrying out in-situ bitumen extraction can include a step of forming one or more vertical freeze walls within or around a deposit of bituminous material and establishing a laterally confined deposit of bituminous material; a step of injecting a solvent within the laterally confined deposit of bituminous material; a step of withdrawing a mixture of dissolved bitumen and solvent from within the laterally confined deposit of bituminous material; a step of injecting water within the laterally confined deposit of bituminous material; and a step of withdrawing a mixture of solvent and water from within the laterally confined deposit of bituminous material.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi
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Publication number: 20130006026Abstract: Methods for transporting bitumen extraction product include providing bitumen-laden aromatic solvent, providing bitumen-laden paraffinic solvent, and blending the two materials. The resulting mixture can be transported through existing pipeline infrastructure and can use existing separation processing equipment, and thereby avoids the need for separate infrastructure for each composition. Combining the two compositions can also avoid undesirable asphaltene precipitation.Type: ApplicationFiled: June 15, 2012Publication date: January 3, 2013Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi
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Publication number: 20120228196Abstract: Methods of preparing bituminous material for extraction processing are described. The methods can include mixing bituminous material with hydrocarbon solvent before and/or during a step of crushing the bituminous material to reduce the size of clumps contained in the bituminous material. The steps of adding hydrocarbon solvent and crushing the bituminous material can be carried out multiple times.Type: ApplicationFiled: March 12, 2012Publication date: September 13, 2012Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi
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Publication number: 20120152809Abstract: Methods and system for extracting bitumen can include the use of a mixing drum for spraying solvent over bituminous material to help dissolve bitumen and create a bitumen-laden solvent phase that can be separated from the non-bituminous components of the bituminous material. The mixing drum can be rotating during the spraying step to help promote dissolution of bitumen. The mixing drum can also include an internal screen for separating bitumen-laden solvent from the non-bituminous material. In some embodiments, two or more mixing drums are used in series, with the non-bituminous material from the first mixing drum being sprayed with additional solvent in the second mixing drum and bitumen laden solvent from the second mixing drum being used as the solvent sprayed over bituminous material in the first mixing drum. Hydrocyclones can also be incorporated in the in system and methods for increased extraction efficiency.Type: ApplicationFiled: November 29, 2011Publication date: June 21, 2012Applicant: MARATHON OIL CANADA CORPORATIONInventors: Julian Kift, Mahendra Joshi, Cherish M. Hoffman, Whip C. Thompson, Dominic J. Zelnik