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Title | Date | Subject | Description |
| 1 |
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Ambient froth flotation process for the recovery of bitumen from tar sand | 1984-01-10 | Patent; Bitumen; Tar sand; Admixing raw tar sand; Tar sand slurry; Milling; Froth flotations; Ambient temperatures; Concentrated bitumen tar sand product; Oil; Recycle and recovery | A method for upgrading the bitumen content of tar sands, wherein a raw tar sand slurry admixture of tar sands, water, collectors, and dispersing/wetting agents is milled; conditioned and then separated by a series of froth flotations at ambient temperatures from about 2.degree. C. to about 25.degree... |
| 2 |
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Apparatus for extracting bitumen from tar sand | 1982-01-19 | Patent; Extracting bitumen from tar sand; Extraction chambers; Countercurrent flow; Plurality; Individually sealed pressure adjusted interconnected extraction chambers in series; Tar sand; Bitumen | A method and apparatus for extracting bitumen from tar sand utilizes a plurality of individually sealed pressure adjusted interconnected extraction chambers in which the tar sand flows countercurrent to the flow of solvent with mixing in each extraction chamber of solvent and tar sand. Tar sand is p... |
| 3 |
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Apparatus for the treatment of tar sand froth | 1976-07-06 | Patent; Tar Sand Froth; Improved recycling disc-type centrifuge; Converting flow direction; Recycled underflow | An improved disc recycling type of centrifuge apparatus which includes means for converting the flow direction of the recycled underflow and causing the recycled underflow to self impact. |
| 4 |
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Arrangement for recovering viscous petroleum from thick tar sand | 1977-05-03 | Patent; Viscous oil; Tar sand; Petroleum; Recovering viscous petroleum; Large vertical dimension; Tubular member | An arrangement is provided for recovering viscous oil from a tar sand formation having a large vertical dimension including a substantially vertical lined shaft extending through the tar sand formation. A first opening is formed in the lower portion of the shaft lining and at least one lateral hole ... |
| 5 |
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Bitumen recovery from tar sands | 1984-09-11 | Patent; Bitumen recovery; Tar sands; Kerosene; Flotation cell; Bitumen | A process for recovering bitumen from tar sands wherein the tar sands are pretreated with a diluent, such as kerosene in the preferred embodiment, to lower the viscosity of the bitumen such that it is in the range of about 5 to about 20 poise at the digestion temperature. The tar sands are then dige... |
| 6 |
 |
Coking contaminated oil shale or tar sand oil on retorted solid fines | 1985-03-26 | Patent; Heavy oil; Oil shale; Tar sand oil; Coking; Pyrolysis oil vapors; Retorted solid fines; Pyrolysis oil; Inert stripping gas; Coking contaminated | Heavy oil fraction of pyrolysis oil vapors containing concentrated contaminants is coked on retorted fine solids contained in a coking zone separate from a retorting vessel characterized by the presence of an inert stripping gas of a rate sufficient to lower the dew point of the pyrolysis oil. |
| 7 |
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Coking poor coking coals and hydrocracked tar sand bitumen binder | 1980-11-18 | | A process is described for producing metallurgical coke from poor coking coals in which there is combined with the poor coking coals a small amount of an additive consisting of a bitumen residue obtained from hydrocracking of bitumen from tar sands. The residue used is that from vacuum distillation ... |
| 8 |
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Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits | 1978-08-29 | Patent; Petroleum; Tar sand deposits; Petroleum recovery; Viscous petroleum-containing formations; Gas injection; Unreactive; Combination solvent-noncondensible gas injection method; Bitumen | Petroleum may be recovered from viscous petroleum-containing formations including tar sand deposits by injecting into the formation a solvent which is liquid at formation conditions and simultaneously therewith injecting a substance which will remain totally gaseous at the pressure and temperature c... |
| 9 |
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Combined surface and in situ tar sand bitumen production | 1985-02-19 | Patent; Combined surface and in situ tar sand bitumen product; In-situ combustion; Tar sand; Unminable tar sand formation; Hydrogen sulfide; H2S; Minable tar; Forward in-situ combustion; Reverse in-situ combustion | In-situ combustion of tar sand formations is improved by introducing into an unminable tar sand formation prior to initiation of in-situ combustion hydrogen sulfide produced from upgrading tar sands from a minable tar sand formation in an area proximate the area of the unminable formation. The strea... |
| 10 |
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Control of process aid used in hot water process for extraction of bitumen from tar sand | 1984-07-31 | Tar sand; Bitumen; Tar sand feed; Free surfactant content; Slurry; Bitumen froth recovery; Bitumen; Hot water process; Bitumen extraction; Extraction circuit | The hot water process is sensitive to the nature of the tar sand feed, which varies. An alkaline process aid, usually NaOH, is normally added to the conditioning step of the process and is needed to obtain good bitumen recovery from most tar sand feeds. The invention is based on the discovery that, ... |
| 11 |
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Double solvent extraction of organic constituents from tar sands | 1977-09-06 | | Extraction of hydrocarbons from tar sands with a light naphtha/methanol solvent system results in rapid decrepitation of the tar-sand aggregate and separation of organic matter into three phases. Distribution of the extracted and non-extracted organic material is among the phases. The most desirable... |
| 12 |
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Flotation method and apparatus for recovering crude oil from tar-sand | 1982-04-13 | flotation method; recovering crude oil; tar sand; scrubbing crude oil from tar-sands; bitumen recovery | This invention relates to an improved method and apparatus for scrubbing crude oil (bitumen) from tar-sands, the apparatus being characterized by a heated vessel for maintaining the tar-sand/water slurry at between approximately 180.degree.-200.degree. F., a pair of counterrotating screw conveyors i... |
| 13 |
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In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range | 2004-06-15 | coal formation; coal; in situ; thermal processing; carbon | A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. An average temperat... |
| 14 |
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In situ thermal processing of a coal formation using a controlled heating rate | 2004-06-15 | coal formation; in situ thermal process; in situ; thermal process; heating rate | A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A heating rate to a... |
| 15 |
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Method and apparatus for on-line monitoring of bitumen content in tar sand | 1984-02-21 | on-line monitoring of bitumen content; tar sand bitumen; tar sand; birumen content; bituminous sands processing; patent | An improvement in the processing of bituminous sands is described, whereby the concentration of bitumen in tar sand feed is measured by infrared light reflected from the tar sand surface. Near infrared is shone onto the surface of the incoming tar sand and reflected light is collected and passed thr... |
| 16 |
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Method and apparatus for producing tar sand deposits containing conductive layers | 1991-08-27 | producing tar sand deposits; tar sand deposits; conductive layers in tar sand deposits; patent; method for producing tar sand deposits; apparatus for producing tar sand deposits | An apparatus and method are disclosed for producing thick tar sand deposits by preheating of thin, relatively conductive layers which are a small fraction of the total thickness of a tar sand deposit, with horizontal electrodes. The preheating is continued until the viscosity of the tar in a thin pr... |
| 17 |
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Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication | 1991-10-29 | producing tar sand deposits; conductive layers in tar sand deposits; tar sand; vertical communication; patent | An apparatus and method are disclosed for producing thick tar sand deposits by preheating of thin, relatively highly conductive layers which are a small fraction of the total thickness of a tar sand deposit, with horizontal electrodes and steam stimulation. The preheating is continued until the visc... |
| 18 |
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Method and apparatus for recovering viscous petroleum from tar sand | 1981-02-03 | patent; viscous petroleum recovery; tar sand; recovering viscous petroleum from tar sand; deviated steam injection well; pumping wells; fluidized petroleum recovery | A method of recovering viscous petroleum from tar sand formations utilizing a deviated steam injection well with pump-down (through the flow line) completion. The steam injection well may use side pocket mandrels with constant flow or orifice regulators to control steam injection rates into the surr... |
| 19 |
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Method and apparatus for recovering viscous petroleum from thick tar sand | 1978-10-17 | viscous petroleum recovery; thick tar sand; closed-loop flow tath; production well; patent | Recovery of viscous petroleum such as from a thick tar sand formation is assisted using a closed-loop flow path formed in a production well extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the forma... |
| 20 |
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Method and apparatus for sampling a core of tar sand | 1983-02-08 | tar sand; core samples of tar sand; core sampling; patent | The invention provides a method and apparatus for sampling a frozen core of tar sand. The frozen core is first cut transversely along its length to form a pair of slabs of semi-circular cross-section. A longitudinal sample portion of substantially triangular cross-section is then cut from the centra... |
| 21 |
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Method and apparatus for the solvent extraction of oil from bitumen containing tar sand | 1996-07-09 | solvent extraction of oil; tar sand bitumen; patent | A method and apparatus for extracting bitumen whereby tar sand containing bitumen components is contacted with a heated thinning oil mixture to reduce the tar sand viscosity and dissolve bitumen to form a lower viscosity feed slurry. The feed slurry is contacted with a light oil in a separator where... |
| 22 |
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Method and appratus for extracting tar sand | 1983-11-22 | tar sand extraction; extraction method; patent; tar sand; extraction apparatus | Method and apparatus for separating coarse sand particles from fine sand particles in a slurry of sand and a solution such as results from the solvent extraction of tar sand, such method comprising causing flow of such slurry in a generally horizontal direction and then causing upward flow at a rate... |
| 23 |
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Method for controlling flocculant addition to tar sand tailings | 1981-07-04 | flocculant addition to tar sand tailings; tar sand tailings; hot water extraction process; bitumen recovery; flocculation; vacuum filteration | The hot water extraction process for recovering bitumen from tar sand produces a large volume of solids-laden aqueous tailings as a waste product. The solids in the tailings stream may be flocculated by the addition of time and the components of the stream then separated into a water-free solids pha... |
| 24 |
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Method for controlling sand in thermal recovery of oil from tar sands | 1978-09-19 | controlling sand; thermal recovery of oil; tar sands oil recovery; tar sands; oil recovery; patent; oil production | A method is disclosed for producing oil from a subterranean reservoir of tar sands as unconsolidated oil bearing sands. The method comprises basically (1) setting a screen in an open hole, the screen being large enough to pass a majority of the formation sand and small enough to retain a packing mat... |
| 25 |
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Method for filtering solvent and tar sand mixtures | 1985-09-03 | filtering solvent; filtering tar sand mixtures; tar sand; paten | A method for filtering spent tar sands from a bitumen and organic solvent solution comprises separating the solution into two streams wherein the bulk of the coarser spent tar sand is in a first stream and has an average particle size of about 10 to about 100 mesh and the bulk of the finer spent tar... |
