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Title | Date | Subject | Description |
| 1 |
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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 | | |
| 2 |
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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... |
| 3 |
 |
Monitoring surfactant content to control hot water process for tar sand | 1991-04-23 | Patent; Hot water process; Tar sand; Extraction; Surfactants | The present invention is based on the following: (1) that when tar sand is conditioned and diluted in the hot water extraction process, there are two classes of anionic surfactants (originating from carboxylate and sulfonate groups) present in the process water; (2) that each of these surfactants ha... |
| 4 |
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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... |
| 5 |
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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 ... |
| 6 |
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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... |
| 7 |
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Method of producing tar sand deposits containing conductive layers | 1990-05-22 | tar sand deposits; conductive layers; patent | A method is 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. The thin conductive layers serve to confine the heating within the tar sands to a thin zone adjacent to the conduct... |
| 8 |
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Method of removing bitumen from tar sand utilizing ultrasonic energy and stirring | 1977-10-18 | Bitumen removal; Tar sand; Ultrasonic energy; stirring; Bitumen recovery | A method of removing bitumen from tar sand for subsequent recovery of the bitumen. The method comprises contacting tar sand with an excess of solvent in which the bitumen is soluble, said contacting being performed within a vessel wherein simultaneously the solvent is being stirred and ultrasonic en... |
| 9 |
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Method of separating bitumen from tar sand with cold solvent | 1976-11-23 | Bitumen; Tar sand; Separation; Solvent extraction; Cold solvent | A method for separating bitumen from tar sand by solvent extraction with efficient separation of water from the recovered bitumen is disclosed. Tar sand may often be recovered by surface mining techniques. The tar sand is comprised of bitumen, water and sand including clays. The tar sand is contacte... |
| 10 |
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Method of removing bitumen from tar sand for subsequent recovery of the bitumen | 1977-10-18 | Bitumen removal; Tar sand; Bitumen recovery; Sonicating; Sand granules | A method of removing bitumen from tar sand for subsequent recovery of the bitumen. The method comprises submerging tar sand in a sufficient amount of a circulating solvent in which the bitumen is soluble, and, while the tar sand is so submerged, sonicating within the solvent with a sufficient amount... |
| 11 |
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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... |
| 12 |
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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... |
| 13 |
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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... |
| 14 |
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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... |
| 15 |
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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. |
| 16 |
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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... |
| 17 |
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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... |
| 18 |
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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... |
| 19 |
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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... |
| 20 |
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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... |
| 21 |
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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... |
| 22 |
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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... |
| 23 |
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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... |
| 24 |
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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... |
| 25 |
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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... |
