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| Number | Title | Issue Date |
| 8414764 | Separating compositions A water-based separating composition for separating hydrocarbons from hydrocarbon-containing material includes at least about 71% by weight water, a hydrotropic agent, a dispersant having flocculating characteristics, a wetting agent, and at least one acid and at le... | 04/09/2013 |
| 8388831 | Compact slurry preparation system for oil sand Staged crushing combined with water addition and mixing is practiced at the mine site to prepare an oil sand slurry ready for hydrotransport. More particularly, as-mined oil sand is crushed to conveyable size (e.g. −24″) using a mobile crusher. The pre-crushed o... | 03/05/2013 |
| 8388832 | Process for flocculation of a tailings stream A process for the treatment of a tailings stream is provided. The tailings stream comprises water, sand and clay fines and is produced from bitumen extraction process of an oil sands ore. The process for treating the tailings stream comprises contacting a polysilica... | 03/05/2013 |
| 8382976 | Recovery of bitumen from froth treatment tailings A method for recovering a tailings bitumen from a froth treatment tailings, including providing a first feed material which is derived from the froth treatment tailings, conditioning the first feed material in order to produce a conditioned first feed material, prov... | 02/26/2013 |
| 8372272 | Separating compositions A water-based separating composition for separating hydrocarbons from hydrocarbon containing material includes at least about 73% by weight water, a hydrotropic agent, a dispersant having flocculating characteristics, at least one acid and at least one base in amoun... | 02/12/2013 |
| 8366918 | Vapor collection and barrier systems for encapsulated control infrastructures A method of preventing egress of a vapor from an encapsulated volume can include forming a substantially impermeable vapor barrier along an inner surface of the encapsulated volume. The encapsulated volume includes a permeable body of comminuted hydro carbonaceous m... | 02/05/2013 |
| 8357291 | Upgrading bitumen in a paraffinic froth treatment process The invention relates to an improved bitumen recovery process. The process includes adding water to a bitumen-froth/solvent system containing asphaltenes and mineral solids. The addition of water in droplets increases the settling rate of asphaltenes and mineral sol... | 01/22/2013 |
| 8354020 | Fouling reduction in a paraffinic froth treatment process by solubility control The disclosure relates to improved bitumen recovery processes and systems. In particular, the disclosure teaches processes and systems for recovering heavy crude oil while avoiding fouling of equipment by recycling at least a portion of a product bitumen from a solv... | 01/15/2013 |
| 8343337 | Bitumen extraction process A process for the extraction and recovery of bitumen from oil sands and a process for the treatment of tailings are disclosed. Bitumen is recovered in a process comprising contacting a polysilicate microgel with an ore sand oil to produce a froth comprising bitumen ... | 01/01/2013 |
| 8277642 | System for separating bitumen from oil sands Disclosed is a system for processing oil sands to remove bitumen, the viscous petroleum product adhered to the sands, from the sands itself. The processing system is designed to be substantially air tight, preventing outside air from entering and volatile chemicals ... | 10/02/2012 |
| 8268165 | Processes for bitumen separation Processes are provided for separating bitumen from oil sands and from other bitumen-containing compositions. ... | 09/18/2012 |
| 8257580 | Dry, stackable tailings and methods for producing the same Methods for preparing solvent-dry, stackable tailings. The methods may include a primary leaching or extraction process that separates most of the bitumen from a material comprising bitumen and produces first solvent-wet tailings. The first solvent-wet tailings are ... | 09/04/2012 |
| 8252170 | Optimizing feed mixer performance in a paraffinic froth treatment process The invention relates to improved bitumen recovery processes and systems. One process provides for operation of a bitumen froth treatment plant at optimum shear rates in the feed pipe carrying the bitumen froth to the froth settling unit. Another process provides fo... | 08/28/2012 |
| 8226820 | Handling and extracting hydrocarbons from tar sands A method and system for handling tar sands and extracting bitumen or oil from the tar sands. The method includes the steps of depositing tar sands in a hopper assembly with a first input auger. An organic solvent mixture is introduced to the tar sands in the hopper ... | 07/24/2012 |
| 8211295 | Process for extraction of bitumen from oilsands Bitumen within raw oilsands may be cracked and fully recovered by light hydrocarbon extraction following exposure to modified natural zeolite catalysts under cracking conditions. The recovered bitumen is reduced in viscosity, with lower boiling point distributions. ... | 07/03/2012 |
| 8147680 | Separating compositions A water-based separating composition for separating hydrocarbons from hydrocarbon-containing material includes at least about 71% by weight water, a hydrotropic agent, a dispersant having flocculating characteristics, a wetting agent, and at least one acid and at le... | 04/03/2012 |
| 8147681 | Separating compositions A water-based separating composition for separating hydrocarbons from hydrocarbon containing material includes at least about 73% by weight water, a hydrotropic agent, a dispersant having flocculating characteristics, at least one acid and at least one base in amoun... | 04/03/2012 |
| 8147679 | Process and system improvement for improving and recuperating waste, heavy and extra heavy hydrocarbons A continuous process for upgrading a heavy hydrocarbon includes the steps of: obtaining a heavy hydrocarbon; heating the heavy hydrocarbon; contacting the heavy hydrocarbon with a solvent at upgrading conditions so as to produce a first product comprising a mixture ... | 04/03/2012 |
| 8114274 | Method for treating bitumen froth with high bitumen recovery and dual quality bitumen production A process for removing contaminants, namely water and particulate solids, from hydrocarbon diluent-diluted bitumen froth (“dilfroth”) is provided to produce hydrocarbon diluent-diluted bitumen (“dilbit”), comprising subjecting the dilfroth to gravity settlin... | 02/14/2012 |
| 8110095 | Oil sand processing apparatus control system and method A control system for an oil sand processing apparatus and a method for controlling the apparatus. The apparatus includes a rotatable drum, an oil sand feed mechanism, a drive mechanism for rotating the drum, a first drum support and a second drum support. The contro... | 02/07/2012 |
| 8101067 | Methods for obtaining bitumen from bituminous materials Methods for obtaining bitumen from bituminous material. The methods may include a dissolution step where a first solvent is added to material comprising bitumen to dissolve the bitumen contained therein. The majority of the dissolved bitumen is then removed from the... | 01/24/2012 |
| 8066870 | Separation of tar from sand A system for separating hydrocarbons from a solid source including a primary separation tank including a first hydrocarbon removing device to remove hydrocarbons from a slurry of water and solids. Further, the system including a transfer device between the primary s... | 11/29/2011 |
| 8062512 | Processes for bitumen separation Processes are provided for separating bitumen from oil sands and from other bitumen-containing compositions. ... | 11/22/2011 |
| 8062511 | Primary froth recycle A process for extracting bitumen from oil sand, comprising: mixing oil sand with process water to produce an oil sand slurry containing bitumen, sand, water and entrained air; conditioning the oil sand slurry; optionally flooding the conditioned oil sand slurry with... | 11/22/2011 |
| 7998342 | Separation of tailings that include asphaltenes Various systems and methods are described that can be used as part of a process to separate bitumen from oil sands. The process may include adding a hydrocarbon solvent to a bitumen containing extract. The tailings from this process may contain a significant amount ... | 08/16/2011 |
| 7985333 | System and method of separating bitumen from tar sands Various methods and systems for obtaining bitumen from tar sands are disclosed. The disclosed methods and/or systems can be used to economically achieve a high degree of bitumen recovery from tar sands. The method may include a primary leaching or extraction process... | 07/26/2011 |
| 7931800 | Method for extraction of bitumen from oil sands using lime In a method for enhancing the efficiency of bitumen recovery from oil sands ore, CaO lime (or Ca(OH)2) is mixed into an oil sands ore-water slurry prior to or during the operation of slurry-based bitumen extraction processes. The lime is introduced at dos... | 04/26/2011 |
| 7914670 | Bituminous froth inline steam injection processing An inline bitumen froth steam heater system including steam injection and static mixing devices is provided. The system heats and de-aerates input bitumen froth without creating downstream processing problems with the bitumen froth such as emulsification or live ste... | 03/29/2011 |
| 7909989 | Method for obtaining bitumen from tar sands A method and a system for obtaining bitumen from tar sand are disclosed. The disclosed method can include two extraction steps, such as a first extraction step using a light aromatic solvent and a second extraction step using a volatile hydrocarbon solvent. The ligh... | 03/22/2011 |
| 7867384 | Apparatus, system, and method for separating bitumen from crude oil sands A method for separating bitumen from crude oil sands comprises subjecting crude oil sands to vibration selected to cause bitumen to separate from crude oil sands and filtering the separated bitumen from the crude oil sands. ... | 01/11/2011 |
| 7867385 | Separating compositions and methods of use Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds. ... | 01/11/2011 |
| 7862709 | Separating compositions and methods of use Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds. ... | 01/04/2011 |
| 7807048 | Thermal recovery of petroleum crude oil from tar sands and oil shale deposits A tar sand volatilizer system thermally removes petroleum crude oil from tar sands or shale oil. A series of heated augers or thermal screws are used to elevate material temperature gradually using conductive heat transfer. The thermal screws blades and auger case r... | 10/05/2010 |
| 7785462 | Separating compositions and methods of use Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds. ... | 08/31/2010 |
| 7771588 | Separatory and emulsion breaking processes The invention pertains to the use of a class of acetylenic surfactants to resolve or break water and oil emulsions. The surfactants are of particular advantage in resolving crude oil emulsions of the type encountered in desalter and similar apparatus designed to ext... | 08/10/2010 |
| 7758746 | Separating compositions and methods of use Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds. ... | 07/20/2010 |
| 7749379 | Separating compositions and methods of use Compositions and methods are provided for separating bitumen from oil sands in an efficient and environmentally acceptable manner, and for recovering residual bitumen from existing tailings ponds. ... | 07/06/2010 |
| 7727385 | Enhanced bitumen flotation A method and apparatus for recovering bitumen as froth from a feed stream having solids, water and bitumen is provided using a separating vessel having mounted thereon a downpipe assembly, the downpipe assembly having at least one downpipe and a nozzle in fluid comm... | 06/01/2010 |
| 7727384 | Bitumen recovery process for oil sand A bitumen recovery process is provided which includes the step of providing a bitumen froth or a component derived from the bitumen froth as a feed material, wherein the bitumen froth is produced in a primary separation process from a slurry comprising oil sand and ... | 06/01/2010 |
| 7722759 | Apparatus, system, and method for separating minerals from mineral feedstock An apparatus, system, and method are disclosed for separating minerals from mineral feedstock—for example bitumen from tar sand. The apparatus includes residence chambers for contacting solvent and tar sand. The solvent-tar sand contact occurs in at least two stag... | 05/25/2010 |
