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Title | Date | Subject | Description |
| 1 |
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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... |
| 2 |
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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, ... |
| 3 |
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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... |
| 4 |
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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. |
| 5 |
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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... |
| 6 |
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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. |
| 7 |
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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... |
| 8 |
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Production of bitumen from a tar sand formation | 1976-05-25 | bitumen production; subterranean tar sand; patent | A method of producing bitumen from a subterranean tar sand formation while heating the formation via electrical conduction between a plurality of wells completed therein characterized by a plurality of steps. First, a high back pressure is maintained on the wells. Next, an immiscible fluid is inject... |
| 9 |
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Recovering viscous petroleum from thick tar sand | 1976-11-30 | viscous petroleum recovery; thick tar sands; in situ | Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path 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 formation to develop a potential passage in the format... |
| 10 |
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Recovering hydrocarbons from tar sand or heavy oil reservoirs | 1994-06-07 | hydrocarbon recovery; tar sand; heavy oil; underground tar sand reservoir; patent | Method of recovering fluids from an underground tar sand reservoir or heavy oil reservoir comprising (a) drilling and completing a first pair of wells and a second pair of wells, each pair comprising an injection well terminating in the reservoir and a production well terminating in the reservoir be... |
| 11 |
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Recovery of heavy crude oil or tar sand oil or bitumen from underground formations | 1992-09-08 | heavy crude oil; tar sand oil; bitumen; oil recovery; patent; underground formations | Heavy crude oil or tar sand oil or bitumen is recovered from an underground formation containing the same by introducing into said formation via an injection well or conduit a hot alkaline aqueous fluid so as to bring about the movement or migration or stripping of said heavy crude oil or tar sand o... |
| 12 |
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Recovery of bitumen from tar sand | 1981-02-10 | bitumen recovery; tar sand; patent | A process for recovering bitumen, or heavy petroleum, from admixture with sand and similar inorganic materials wherein said bitumen-sand mixture is mixed with an aqueous solution of an ammonium salt selected from ammonium sulfite, ammonium bisulfite and mixtures thereof to form a second mixture comp... |
| 13 |
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Recovery of heavy crude oil or tar sand oil or bitumen from underground formations | 1989-07-11 | heavy crude oil; tar sand oil; bitumen; oil recovery; underground formations; patent; bitumen production | Heavy crude oil or tar sand oil or bitumen is recovered from an underground formation containing the same by introducing into said formation via an injection well or conduit a hot alkaline aqueous fluid so as to bring about the movement or migration or stripping of said heavy crude oil or tar sand o... |
| 14 |
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Recycle of secondary froth in the hot water process for extracting bitumen from tar sand | 1988-10-11 | hot water process; bitumen extration; tar sand; secondary froth recycling; patent | Froth, produced by induced air flotation in the hot water process circuit for extracting bitumen from tar sand, is recycled and added to the fresh slurry being introduced to the primary separation vessel. An increase in bitumen recovered as primary froth from the circuit is produced. |
| 15 |
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Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits | 1977-08-16 | petroleum recovery; bitumen; tar sand deposits; patent; high asphaltic petroleum | Petroleum materials may be effectively recovered from subterranean, viscous, asphaltic or bituminous formations such as tar sand deposits by first injecting into the tar sand formation a paraffinic hydrocarbon at a temperature below 300.degree. F which precipitates asphaltic material from the asphal... |
| 16 |
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Separation of bitumen from dry tar sands | 1978-10-17 | bitumen separation; bitumen recovery; dry tar sands | A process for the separation and recovery of bitumen from dry tar sands or sands with negligible quantities of connate water. The process includes comminuting the tar sands to an average particle size of approximately one centimeter in diameter and digesting the comminuted tar sand in a hot, aqueous... |
| 17 |
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Separation of solids from tar sands extract | 1978-06-13 | separations of solids; tar sands; tar sands extract; liquid promoter; patent | Solids are separated from a tar sands extract by gravity settling or centrifugation in the presence of a liquid promoter which promotes and enhances the separation of the solid material. The liquid promoter has a characterization factor of at least 9.75, a 5 volume percent distillation temperature o... |
| 18 |
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Solvent extraction of tar sand | 1979-02-13 | solvent extraction process; tar sand; bitumen recovery | An extraction process for recovering bitumens from tar sands in which the tar sand is mixed with a hot hydrocarbon solvent, for example, toluene, in order to evaporate substantially all the water contained in the tar sands. The tar sands-solvent mixture is then separated into two phases of fine and ... |
| 19 |
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Simultaneous upgrading of tar sand bitumen and coal by corefining | 1988-08-16 | tar sands derived bitumen and coal liquification process; patent; tar sands | An improved tar sands derived bitumen and coal liquification process is disclosed wherein substantial percentages of subdivided coal particles and tar sands derived bitumen liquids are mixed and then corefined with hydrogen under hydrocracking conditions, but in the absence of a separate catalyst, a... |
| 20 |
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Solvent extraction process for recovering bitumen from tar sand | 1987-06-30 | solvent extraction process; bitumen recovery; tar sand; patent; direct solvent extraction; solvent bitumen recovery; residual bitumen | Bitumen recovered from tar sand by direct solvent extraction followed by washing of the sand tailings with countercurrent solvent flow and a solvent/aqueous phase separation step to recover solvent and residual bitumen. |
| 21 |
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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... |
| 22 |
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System for handling the underflow from a primary separation vessel in the tar sand hot water process | 1978-08-08 | patent; tar sand; hot water process; primary separation vessel; PSV; handling underflow | For operating control and safety, a variable-speed close-coupled pump is direct connected to the underflow of the primary separation vessel (PSV). The desired discharge density of the PSV is 70- 80% solids in order to minimize bitumen losses. For a good pumping system, the pump discharge density sho... |
| 23 |
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System for recovering viscous petroleum from thick tar sand | 1977-04-26 | viscous petroleum recovery; thick tar sand; patent | Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path formed in a well by concentric casing and tubular members extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the pet... |
| 24 |
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Supercritical tar sand extraction | 1982-07-27 | tar sand extraction; tar sand; carbonaceous material recovery; supercritical extraction; carbonaceous material | An integrated process for the recovery of carbonaceous material from tar sands by supercritical extraction involving countercurrent flow of the tar sand and the solvent is disclosed. |
| 25 |
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Tar sand processing apparatus | 1976-04-20 | processing tar sand; tar sand; bitumen recovery; oil recovery; patent | Apparatus for processing tar sands to recover bitumen therefrom, and without the use of heat of steam, such apparatus including a processing tank having a concave, upwardly facing bottom constructed for receiving the upper flight of an endless conveyor thereat. Structure is provided for admitting ta... |
