1049 results about "Oil sands" patented technology

Processes and apparatus for the treatment of product streams from mineral processing operations, including the treatment of tailings which result from oil sand processing operations. The processes and apparatus relate to the recovery of a diluent solvent from bitumen froth tailings and to the thickening of tailings from a bitumen froth stream and a middlings stream resulting from an oil sand extraction process. In one aspect the processes and apparatus relate particularly to the recycling of product streams to maximize process efficiencies. In a second aspect the processes and apparatus relate particularly to the thickening of tailings to produce an underflow component, a clarified overflow component and an unclarified overflow component.

A method of improving hydrocarbon recovery from oil sands, oil shale, and petroleum residues includes adding a polymeric or nonpolymeric processing aid capable of sequestering cations, such as the multivalent calcium, magnesium and iron cations. The hydrocarbons are preferably contacted with the processing aid before a primary separation of the hydrocarbons in order to increase bitumen recovery. A processing aid is provided in an effective amount to increase the liberation of the hydrocarbons from inorganic solids, particularly when the source is a poor processing ore. Preferred processing aids include citric acid or a polymeric acid selected from polyacrylic acid, polymethacrylic acid, salts of these acids, partial salts of these acids, and combinations thereof. The processing aids significantly increase the hydrocarbon recovery typically with concentrations less than 50 ppm and the polymeric processing aids can also provide beneficial flocculation of solids in tailings slurry.

An apparatus of produced water treatment, to be adopted in an in-situ recovery method of producing bitumen from oil sand, the apparatus capable of removing the oil from produced water, the produced water of being left by separating the bitumen from bitumen-mixed fluid having been recovered from the oil sand, the apparatus having: a vessel for receiving the produced water; a submerge type filtration membrane module, installed in the vessel, for filtering the produced water in the condition of the membrane being submerged in the produced water; and a bubble generator for generating bubbles to be forwarded toward the submerged filtration membrane in the produced water.

An apparatus to perform a process to remove water and minerals from a bitumen froth output of a oil sands hot water extraction process comprises: (i) a cyclone body having an elongated conical inner surface defining a cyclone cavity extending from an upper inlet region with a diameter DC to a lower apex outlet with a diameter DU; (ii) an inlet means forming an inlet channel extending into the upper inlet region of the cyclone cavity; and (iii) a vortex finder forming an overflow outlet of a diameter (DO) extending into the upper inlet region of the cyclone cavity toward the lower apex outlet and having a lower end extending an excursion distance below the inlet channel; wherein a fluid composition entering the inlet channel into the cyclone cavity is urged by force of gravity and velocity pressure downward toward the lower apex and variations in density of the constituent components of the fluid composition cause the lighter component materials to be directed toward the overflow outlet of the vortex finder.

An improved oxidative process that employ a robust, non-aqueous, and oil-soluble organic peroxide oxidant for effective desulfurization and denitrogenation of hydrocarbons including petroleum fuels, hydrotreated vacuum gas oil (VGO), non-hydrotreated VGO, petroleum crude oil, synthetic crude oil from oil sand, and residual oil. Even at low concentrations and without the assistance of catalysts, the non-aqueous organic peroxide oxidant is extremely active and fast in oxidizing the sulfur and nitrogen compounds in the hydrocarbon feedstocks. Furthermore, the process generates a valuable organic acid by-product that is also used internally as the extractive solvent for effective removal of the oxidized sulfur and nitrogen from the hydrocarbons without the need of a final adsorption step. Novel process steps are also disclosed to substantially prevent yield loss in the oxidative process.

The invention relates to a sand-consolidating and water-blocking profile modifying agent for oil sludge sand. The profile modifying agent is prepared by mixing the following raw materials: oil sludge sand, 10 to 90 portions of consolidation agent or adding modifier, a consolidation accelerant or a consolidation retardant; the oil sludge sand is subjected to ball milling through a ball mill; part of large crude oil is separated off so as to reach the requirement of granularity of the profile control agent; therefore, the oil sludge sand with granularity of less than 200 meshes is less than 70 percent of the total mass of the oil sludge sand; and the consolidation agent is selected from one or a mixture of one or more of cement or cement clinker, steel slag, slag, pulverized coal ash, gypsum, lime and magnesia. In application, the profile control agent is prepared to a 1 to 20 percent suspension solution; and the suspension solution is injected into a deep part of stratum of an oilfield through profile modification equipment. The profile modifying agent fully utilizes mass oil sludge sand produced in the production process of various oilfields, realizes the aim of emission reduction; and the oil sludge sand is recycled and is used as the sand-consolidating and water-blocking profile modifying agent, thereby achieving the aim of consolidating sand, blocking water and improving extraction yield.

A method of produced water treatment in an in-situ recovery method of producing bitumen from oil sand, the method has the steps of: separating bitumen from bitumen-mixed fluid so as to leave produced water, the bitumen-mixed fluid having been recovered from the oil sand wells; and filtering the produced water via a microfiltration membrane made of polytetrafluoroethylene.

An apparatus for separating bitumen from a bitumen froth output of a oil sands hot water extraction process comprises an inclined plate separator (IPS) for providing a first bitumen separation stage and a cyclone for providing a second bitumen separation stage. The cyclone overflow is recycled to the IPS inlet.

A method for heating materials by application of radio frequency (“RF”) energy is disclosed. For example, the disclosure concerns a method for RF heating of petroleum ore, such as bitumen, oil sands, oil shale, tar sands, or heavy oil. Petroleum ore is mixed with a substance comprising susceptor particles that absorb RF energy. A source is provided which applies RF energy to the mixture of a power and frequency sufficient to heat the susceptor particles. The RF energy is applied for a sufficient time to allow the susceptor particles to heat the mixture to an average temperature greater than about 212° F. (100° C.). Optionally, the susceptor particles can be removed from the mixture after the desired average temperature has been achieved. The susceptor particles may provide for anhydrous processing, and temperatures sufficient for cracking, distillation, or pyrolysis.

Three new embodiments to the Chattanooga Process that convert or upgrade oil bitumen, a combination of oil sands and bitumen, a combination of sand and bitumen, and oil shale to high grade low sulfur (about 0.1 to 0.5 wt. % sulfur, or less) crude oil. The invention relates to a continuous process for producing synthetic crude oil (SCO) from oil sand bitumen which has been extracted from under ground via in situ processes, or strip mined and extracted via hot water extraction processes before upgrading. It can also apply to kerogen extracted in situ from shale underground. The process involves treating the hot bitumen with sand from an extraction process or the hot oil from kerogen with ground shale containing kerogen in a fluid bed reactor where the reactant and fluidizing medium is only hydrogen. The invention also relates to a continuous process for producing synthetic crude oil (SCO) from oil shale kerogen. The invention relates to a continuous process for producing synthetic crude oil from oil bearing material, e.g., oil shale or oil sand (tar sand), through continuous process for producing synthetic crude oil from bituminous oil sand (tar sand) or shale. The process includes treating the oil sand (tar sand) or shale to produce a fluidizable feed, feeding the fluidizable feed to a fluidized bed reactor, and fluidizing and reacting the fluidizable feed in the fluidized bed reactor with a feed of hydrogen provided by a feed stream having a stream containing hydrogen in a concentration greater than 90 vol % (90 vol %-100 vol % H2). In one embodiment, the invention relates to a continuous process which can recover methane and ethane from a recycle hydrogen stream. In one embodiment, the process can recover PSA tail gas as feed to a hydrogen plant. In one embodiment, the process can be operated to reduce or eliminate the requirement for externally provided methane feed to the hydrogen plant.

A process for dewatering oil sand fine tailings is provided and comprises a dispersion and floc build-up stage comprising in-line addition of a flocculent solution comprising an effective amount of flocculation reagent into a flow of the oil sand fine tailings; a gel stage wherein flocculated oil sand fine tailings is transported in-line and subjected to shear conditioning; a floc breakdown and water release stage wherein the flocculated oil sand fine tailings releases water and decreases in yield shear stress, while avoiding an oversheared zone; depositing the flocculated oil sand fine tailings onto a deposition area to form a deposit and to enable the release water to flow away from the deposit, preferably done in a pipeline reactor and managing shear according to yield stress and CST information and achieves enhanced dewatering.

The disclosed process removes or reduces impurities such as asphaltenes, solids (especially solid fines), sulfur, metals, chlorides, water, salts, and acids from bitumen, oil sands, and crude oils with a wide range of gravities. A crude source composition is contacted with one or more zeolite materials to remove asphaltenes, solids, sulfur, NSO, metals, chlorides, water, salts, and/or acids from the composition. The crude source is typically diluted with a hydrocarbon solvent such as naphtha before contacting the zeolite(s). The disclosed processes represent an improvement over prior and presently available processes because the disclosed processes are capable of processing emulsions.

A method of microbial enhanced oil recovery for recovering oil from an oil-bearing rock formation is provided. The methodology uses a consortium of bacteria including a mixture of surfactant producing bacteria and non-surfactant enzyme producing bacteria which may release hydrocarbons from bitumen containing sands. The described bioprocess can work with existing petroleum recovery protocols. The consortium microorganisms are also useful for treatment of above oil sands, ground waste tailings, subsurface oil recovery, and similar materials to enhance remediation and/or recovery of additional hydrocarbons from the materials.

Various systems and methods are described that can be used as part of a process to separate bitumen from oil sands. The process may include adding a hydrocarbon solvent to a bitumen containing extract. The tailings from this process may contain a significant amount of solvent. The solvent may be recovered from the tailings with a tailings solvent recovery unit that utilizes negative pressure to significantly reduce the cost of the process in comparison to a conventional steam stripping unit. In one embodiment, the tailings may also separated prior to entering the tailings solvent recovery unit with a gravity separation apparatus or a cyclonic separation apparatus, such as a hydrocyclone.

The invention relates to a process method for low temperature carbonization on a fluidized bed. The process method uses the principle of a lift pipe fluid catalytic cracker, uses a lift pipe reactor of the lift pipe fluid catalytic cracker as a carbonization reactor, uses a catalyst regenerator of the lift pipe fluid catalytic cracker as a high-temperature water gas generator, and uses high-temperature water gas as a fluidizing medium and a heat carrier of a carbonization raw material. The carbonization method comprises the following steps that: a carbonizing raw material is conveyed to the lift pipe fluidized bed reactor for a carbonization reaction of the raw material; the reacted oil and gas are separated to produce a carbonized product; carbonized carbocoal enters the water gas regenerator; carbon in the carbonized carbocoal, oxygen and water vapour in air are subjected to oxidation reaction and water gas reaction; the water gas obtained in the reaction is used as the fluidizing medium and the heat carrier during the carbonization process; and solid clinkers produced after the carbonized carbocoal is subjected to the water gas reaction are discharged. Compared with the prior art, the method has the advantages of simple process, high production capacity, less equipment and so on, and can be used in oil shale, oil sand, coal and other substances to produce liquid petroleum products.

The present invention relates to a petroleum processing method and equipment, especially to an oil-bearing sludge separating method and equipment, provides a simple, economical, practical, environment-protecting and pollution-free oil-bearing sludge processing method and equipment, and the method comprises the following procedures: heating the water vapor to the superheated steam with temperature above 500 DEG C with a superheated steam boiler; injecting the superheated steam to the oil-bearing sludge with a speed of 2 mach, the oil-bearing sludge is crushed to small particles after instant colliding; separating the water component and the oil component which are evaporated and sublimed instantly with a cyclone separator; dropping the temperature and fluidifying through water spraying; and extracting the oil product up to standard by the separating of the oil-water separating pot, above 95% oil component in the oil-bearing sludge can be recovered and the oil content of the residue is lower than 5%, the petroleum processing method has the advantages of guaranteeing the quality of the recovered oil product, simple operation and maintenance, broad application that can be applied to varies types of oil-bearing sludge and oil-bearing sand, excellent economic benefit and low cost, the equipment is used for processing the oil-bearing sludge that is generated in the crude oil exploration and exploitation, crude oil transportation and the petroleum refinery wastewater treatment.

A method of recovering hydrocarbon such as heavy oil or bitumen from an underground oil-rich reservoir formation such as oil sand or oil shale is provided. One or more substantially vertical wells are drilled into the formation so that the bottom portion of each well extends into the formation and, preferably, below the bottom of the formation. The bottom portion of each well may be enlarged relative to the rest of the well. The bottom portion of the well is substantially filled with conductive liquid, sealed at the surface and high voltage power of up to 72,000 Volts or more is applied via an electrical conductor having an electrode submerged in the conductive liquid. The resulting current flow increases the formation temperature, causing the heavy oil or bitumen to flow from the formation into the bottom portion where it can be removed from the well.