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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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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... |
| 9 |
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Method of recovering viscous petroleum from tar sand | 1976-11-30 | Patent; Viscous petroleum recovery; Tar sands | Recovery of viscous petroleum such as from tar sands is assisted using a substantially vertical passage from the earth's surface which penetrates the tar sand and has extending therefrom a lateral hole containing a flow path isolated from the tar sand for circulating a hot fluid to and from the vert... |
| 10 |
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Method for treating a tar sand reservoir to enhance petroleum production by cyclic steam stimulation | 1986-08-26 | tar sand drainage; patent; enhanced petroleum production; cyclic steam stimulation; tar sand treatment | A method for conditioning the virgin drainage area of a tar sand formation that is penetrated by a well for enhanced petroleum production by cyclic steam stimulation is described. The method comprises fracturing the drainage area by injection of liquid carbon dioxide. While carbon dioxide is still i... |
| 11 |
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Method of recovering viscous petroleum from thick tar sand | 1977-02-22 | Patent; Viscous petroleum recovery; Thick tar sand | 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... |
| 12 |
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Method of recovery of bitumen from tar sand formations | 1977-01-18 | Patent; Bitumen recovery; Tar sand formation | A competent permeable communication zone connecting injection and production wells completed in a tar sand which communication zone will be rigid and will not tend to slump or heal may be developed by injecting a fluid in the injection well under such pressure so as to fracture the tar sand formatio... |
| 13 |
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Methods of tar sand bitumen recovery | 1992-09-01 | Bitumen recovery; Tar sand; Water displacement extraction; Patent | Methods for the recovery of bitumen from tar sands comprising the steps of mixing tar sand, solvent and a displacing amount of aqueous medium to form a mixture, followed by separating a bitumen-rich solvent phase from the mixture and recovering bitumen from the bitumen-rich solvent phase are disclos... |
| 14 |
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Method for recovering bitumen from tar sand | 1982-05-25 | bitumen recovery; tar sand | In recovering bitumen from tar sand by separation using an aqueous liquid, contamination of the aqueous phase with dispersed, finely divided solids is prevented by a mild heat treatment of the bituminous sand to reduce its water content before the sand is contacted with the aqueous liquid. |
| 15 |
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Method of extracting liquid and gaseous fuel from oil shale and tar sand | 1981-05-12 | liquid extraction; gaseous fuel; oil shale; tar sand; patent | Kerogen and other combustible matter can be extracted from an area of oil shale or tarsand by drilling boreholes in a selected pattern through the overlying soil and rock without removing it. Each borehole mouth is tightly closed by a cover provided with an air inlet pipe and a gas exhaust pipe. In ... |
| 16 |
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Method of reducing moisture and solid content of bitumen extracted from tar sand minerals | 2000-02-01 | Tar sand; Alkoxyalkylphenol alkoxylate surfactant; Recoverable hydrocarbon; Anionic and cationic flocculant; Bitumen; Moisture reduction | Tar sand is upgraded to produce a hydrocarbon having a low concentration of water and solids by contacting a bitumen/diluent mix with an alkoxyalkylphenol alkoxylate surfactant prior to separation of a recoverable hydrocarbon phase. The separation of the bitumen/diluent mix into a recoverable hydroc... |
| 17 |
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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... |
| 18 |
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Use of a submersible viscometer in the primary separation step of the hot water process for recovery of bitumen from tar sand | 1987-01-20 | | |
| 19 |
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Multiple drain method for recovering oil from tar sand | 2001-07-24 | Patent; Thermal method; Immobile hydrocarbon oil; Subsurface tar sand deposit; Bore holes | A thermal method is described for recovering normally immobile hydrocarbon oil from a subsurface tar sand deposit. The procedure comprises: (a) establishing at least one substantially vertical production bore hole extending from the surface of the earth to at least the bottom of said subsurface form... |
| 20 |
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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 ... |
| 21 |
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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... |
| 22 |
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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... |
| 23 |
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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... |
| 24 |
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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... |
| 25 |
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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... |
