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Title | Date | Subject | Description |
| 26 |
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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... |
| 27 |
 |
Completion for tar sand substrate | | Patent; Hydrocarbons; Subterranean formation; Well; Liner; Bitumen; Bitumen emulsion; Hydrocarbon recovery; Tar sand; Tar sand substrate | Method and apparatus for recovering hydrocarbons from a subterranean formation in which a well completion, including a well liner, lies in a generally horizontal disposition within the hydrocarbon productive substrate. The liner encloses conductor means for delivering a stream of a hot stimulating a... |
| 28 |
 |
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, ... |
| 29 |
 |
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... |
| 30 |
 |
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. |
| 31 |
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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... |
| 32 |
 |
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. |
| 33 |
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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... |
| 34 |
 |
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... |
| 35 |
 |
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... |
| 36 |
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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 ... |
| 37 |
 |
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 ... |
| 38 |
 |
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... |
| 39 |
 |
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... |
