| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166266000 | Injection and producing wells | 39 |
| 20080257550 | Method and Device for Separation of Particles from Injection Water - Abstract: A method and device for separating particles from injection water, the injection water being used for the stimulation of a petroleum reservoir. The water is drawn from a water reservoir, cleaned and typically treated by means of additives before being led into the petroleum reservoir. The injection water is first led into a closed space ( | 10-23-2008 |
| 20090038795 | Hydrocarbon Recovery From Impermeable Oil Shales Using Sets of Fluid-Heated Fractures - An economic method for in situ maturing and production of oil shale or other deep-lying, impermeable resources containing immobile hydrocarbons. Vertical fractures are created using horizontal or vertical wells. The same or other wells are used to inject pressurized fluids heated to less than approximately 370° C., and to return the cooled fluid for reheating and recycling. The heat transferred to the oil shale gradually matures the kerogen to oil and gas as the temperature in the shale is brought up, and also promotes permeability within the shale in the form of small fractures sufficient to allow the shale to flow into the well fractures where the product is collected commingled with the heating fluid and separated out before the heating fluid is recycled. | 02-12-2009 |
| 20090050320 | Water flooding method - A method of recovering hydrocarbons from a porous subterranean hydrocarbon-bearing formation by: (a) reducing the salinity of a saline source water by reverse osmosis using a membrane having a first surface and a second surface by (i) feeding the saline source water to the first surface of the membrane, and (ii) removing treated water of reduced salinity from the second surface of the membrane; and (b) injecting the treated water into the formation; wherein the membrane is selectively permeable to water over dissolved solids such that when (i) the saline source water has a total dissolved solids content of at least 17,500 ppm, and (ii) the applied pressure across the membrane is greater than the osmotic pressure across the membrane and lies within the range 45 to 90 bar (4.5 to 9.0 MPa), the total dissolved solids content of the treated water is in the range 500 to 5000 ppm. Increased oil recovery can be achieved. | 02-26-2009 |
| 20090056940 | Process for Recovering Heavy Oil Utilizing One or More Membranes - An oil recovery process utilizes one or more membranes to remove silica and/or oil from produced water. In one method, the process includes separating oil from produced water and precipitating silica. The produced water having the precipitated silica is directed to a membrane, such as a ceramic membrane, which removes the precipitated silica from the produced water. In some cases, residual oil is present and is also removed by the membrane. | 03-05-2009 |
| 20090071647 | Thermal processes for subsurface formations - A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some hydrocarbons in a part of a subsurface formation. Hydrocarbons and/or other products may be produced from a subsurface formation. Certain embodiments describe apparatus, methods, and/or processes used in treating a subsurface or hydrocarbon containing formation. | 03-19-2009 |
| 20090255673 | Process for Recovering Heavy Oil Utilizing One or More Membranes - An oil recovery process utilizes one or more membranes to remove silica and/or oil from produced water. In one method, the process includes separating oil from produced water and precipitating silica. The produced water having the precipitated silica is directed to a membrane, such as a ceramic membrane, which removes the precipitated silica from the produced water. In some cases, residual oil is present and is also removed by the membrane. | 10-15-2009 |
| 20100051268 | OIL EXTRACTION SYSTEM AND OIL EXTRACTION SUPERVISORY SYSTEM - An oil extraction system is provided. The oil extraction system includes a sucker rod pump ( | 03-04-2010 |
| 20100224363 | Method of direct steam generation using an oxyfuel combustor - A gas generator is provided with a combustion chamber into which oxygen and a hydrogen containing fuel are directed for combustion therein. The gas generator also includes water inlets and an outlet for a steam and CO | 09-09-2010 |
| 20100243246 | WATER INJECTION SYSTEMS AND METHODS - There is disclosed a system comprising a well drilled into an underground formation comprising hydrocarbons; a production facility at a topside of the well; a water production facility connected to the production facility; wherein the water production facility produces water by removing some multivalent ions, then removing some monovalent ions, and then adding back some multivalent ions, and then injects the water into the well. | 09-30-2010 |
| 20110079388 | DOWNHOLE SEPARATION AND REINJECTION - A technique enhances hydrocarbon fluid production. The technique utilizes a well with a plurality of lateral wellbores positioned to facilitate removal of well fluid from a hydrocarbon reservoir. A separator is disposed in the well to receive well fluid that flows from a lateral production leg. Operation of the separator separates well fluid into an oil component and a water component to enable production of the oil component. The water component is injected into the reservoir in a manner that drives well fluid trapped in the reservoir into the lateral production leg. | 04-07-2011 |
| 20110088896 | INTEGRATED ENHANCED OIL RECOVERY PROCESS - The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or methane reforming, involving combined capture and recycle of carbon dioxide from both processes. | 04-21-2011 |
| 20110108269 | SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS - A system for producing oil and/or gas from an underground formation comprising a first array of wells dispersed above the formation; a second array of wells dispersed above the formation; wherein the first array of wells comprises a mechanism to inject a miscible enhanced oil recovery formulation into the formation while the second array of wells comprises a mechanism to produce oil and/or gas from the formation for a first time period; a means to convert at least a portion of the miscible enhanced oil recovery formulation within the formation into another compound during a second time period; and a means to recover at least a portion of the another compound during a third time period. | 05-12-2011 |
| 20110132602 | SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS - A system for producing oil and/or gas comprising a mechanism for releasing at least a portion of a sulfur containing compound into a formation; a first mechanism for converting at least a portion of the sulfur containing compound into a carbon disulfide formulation and/or a carbon oxysulfide formulation, the first mechanism for converting within the formation; and a second mechanism for converting at least a portion of the carbon disulfide formulation and/or a carbon oxysulfide formulation into another compound, the second mechanism for converting within the formation. | 06-09-2011 |
| 20110146978 | INTEGRATED ENHANCED OIL RECOVERY PROCESS - The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or reforming, and an air separation process for generating (i) an oxygen stream for use, for example, in the syngas process or a combustion process, and (ii) a nitrogen stream for EOR use. | 06-23-2011 |
| 20110146979 | INTEGRATED ENHANCED OIL RECOVERY PROCESS - The present invention relates to an enhanced oil recovery process that is integrated with a synthesis gas generation process, such as gasification or reforming, involving capture and recycle of a sour carbon dioxide stream for EOR use. | 06-23-2011 |
| 20120090838 | METHOD OF INJECTING CARBON DIOXIDE - A method of storing CO | 04-19-2012 |
| 20120145386 | METHOD FOR RECYCLING DEOILED WATER USING COUNTERFLOW FALLING-FILM EVAPORATORS - We provide an evaporator technology for treatment of produced water that may be deoiled water. Systems described herein utilize a vertical tube heat exchanger bundle where the brine is distributed in a falling film along the inside of the tube wall. Condensing steam causes a portion of the deoiled water to evaporate; this water vapor travels upward in a counterflow direction relative to the deoiled water. This evaporator technology provides several design advantages over the conventional vertical tube co-current flow evaporators (where the vapor flows downward with the falling film). These advantages include a minimal total installed cost (TIC) as well as offering optimal design features for water chemistry management. | 06-14-2012 |
| 20130000894 | SOLVENT INJECTION RECOVERY PROCESS - A process for the recovery of hydrocarbon such as bitumen/EHO from a hydrocarbon bearing formation in which are situated an upper injection well and a lower production well, the method comprising the steps: preheating an area around and between the wells by circulating hot solvent through the completed interval of each of the wells until sufficient hydraulic communication between both wells is achieved; injecting one of more hydrocarbon solvents into the upper injection well at or above critical temperature of the solvent or solvent mixture, thereby causing a mixture of hydrocarbon and solvent to flow by gravity drainage to the lower production well; and producing the hydrocarbon to the surface through the lower production well. | 01-03-2013 |
| 20130020078 | Oil Recovery Process - An oil recovery process entails recovering an oil-water mixture from an oil bearing formation and separating the oil-water mixture to produce an oil product and produced water. The produced water includes suspended and dissolved solids and is subjected to treatment which removes suspended and dissolved solids therefrom. The treated water is then directed to a forced circulation steam generator that includes a furnace having a burner, water cooled walls and an evaporator unit. The treated water is pumped through the water cooled walls and the evaporator unit. The water passing through the water cooled walls and evaporator unit are heated to produce approximately 10% to approximately 30% quality steam in both the water cooled walls and the evaporator unit. The steam is collected and separated from a water-steam mixture to produce high quality steam, on the order of 95% or greater quality steam. This steam constitutes injection steam which is injected into an injection well to facilitate the recovery of the oil-water mixture. | 01-24-2013 |
| 20130025856 | DUAL OR TWIN-WELL COMPLETION WITH WETTABILITY ALTERATION FOR SEGREGATED OIL AND WATER PRODUCTION - A well completion and related method are provided for formations susceptible to simultaneous production of oil and water. In one embodiment, two closely spaced, preferably horizontal wellbores are drilled from a single well into the reservoir. The reservoir rock surrounding one leg (typically the upper leg) is chemically treated to make it hydrophobic, whereas the reservoir rock surrounding the other leg is chemically treated to make it hydrophilic. Separate production tubing and a dual completion is installed in order to enable independent flow from each leg. Drawdown pressures in both legs are controlled to be sufficiently close to each other such that only oil flows into one leg and only water into the other. The water produced is re-injected downhole or brought to the surface. | 01-31-2013 |
| 20130118735 | SYSTEM AND METHOD FOR GENERATING POWER AND ENHANCED OIL RECOVERY - A method for producing a purified carbon dioxide product suitable for EOR and surplus electricity uses a vaporous hydrocarbon feed and a SOFC system. A SOFC system includes a condensate removal system, an acid gas removal system, a hydrodesulfurization system, a sorption bed system, a pre-reformer, a solid oxide fuel cell, a CO2 separations system and a CO2 dehydration system operable to form the purified carbon dioxide product, where the SOFC system is operable to produce surplus electricity from the electricity produced by the solid oxide fuel cell. A method of operating the pre-reformer to maximize the internal reforming capacity of a downstream solid oxide fuel cell uses a pre-reformer fluidly coupled on the upstream side of a solid oxide fuel cell. A method of enhancing hydrocarbon fluid recovery from a hydrocarbon-bearing formation using a SOFC system. | 05-16-2013 |
| 20130269934 | METHOD FOR PRODUCTION OF HIGH PURITY DISTILLATE FROM PRODUCED WATER FOR GENERATION OF HIGH PRESSURE STEAM - Embodiments presented herein provide an evaporation based zero liquid discharge method for generation of up to 100% quality high pressure steam from produced water in the heavy oil production industry. De-oiled water is processed in an evaporation system producing a distillate that allows steam to be generated with either drum-type boilers operating at higher pressures or once-through steam generators (OTSGs) operating at higher vaporization rates. Evaporator blowdown is treated in a forced-circulation evaporator to provide a zero liquid discharge system that could recycle >98% of the deoiled water for industrial use. Exemplary embodiments of the invention provide at least one “straight sump” evaporator and at least one hybrid external mist eliminator. Embodiments of the evaporation method operate at a higher overall efficiency than those of the prior art by producing distillate at a higher enthalpy which minimizes the high pressure boiler preheating requirement. | 10-17-2013 |
| 20140000880 | METHOD OF DIRECT STEAM GENERATION USING AN OXYFUEL COMBUSTOR | 01-02-2014 |
| 20140144626 | SUPERHEATED STEAM WATER TREATMENT PROCESS - Methods and apparatus produce steam and, more particularly, utilize untreated feedwater as a source for steam used in steam assisted gravity drainage. Superheated steam, produced from treated feedwater in a boiler, is used to vaporize untreated feedwater that would otherwise foul a boiler. Contaminants in the untreated water can them be removed as solids or concentrated brine. The vaporization process occurs in stages to allow for the use of a higher fraction of untreated water. | 05-29-2014 |
| 20140151040 | IN-SITU METHOD AND SYSTEM FOR REMOVING HEAVY METALS FROM PRODUCED FLUIDS - Methods and systems relate to the in-situ removal of heavy metals such as mercury, arsenic, etc., from produced fluids such as gases and crudes from a subterranean hydrocarbon-bearing formation. A sufficient amount of a fixing agent is injected into formation with a dilution fluid. The fixing agent reacts with the heavy metals forming precipitate, or is extracted heavy metals into the dilution fluid as soluble complexes. In one embodiment, the heavy metal precipitates remain in the formation. After the recovery of the produced fluid, the dilution fluid containing the heavy metal complexes is separated from the produced fluid, generating a treated produced fluid having a reduced concentration of heavy metals. In one embodiment, the dilution fluid is water, and the wastewater containing the heavy metal complexes after recovery can be recycled by injection into a reservoir. | 06-05-2014 |
| 20140158353 | IN-SITU METHOD AND SYSTEM FOR REMOVING HEAVY METALS FROM PRODUCED FLUIDS - Methods and systems relate to the in-situ removal of heavy metals such as mercury, arsenic, etc., from produced fluids such as gases and crudes from a subterranean hydrocarbon-bearing formation. A sufficient amount of a fixing agent is injected into formation with a dilution fluid. The fixing agent reacts with the heavy metals forming precipitate, or is extracted heavy metals into the dilution fluid as soluble complexes. In one embodiment, the heavy metal precipitates remain in the formation. After the recovery of the produced fluid, the dilution fluid containing the heavy metal complexes is separated from the produced fluid, generating a treated produced fluid having a reduced concentration of heavy metals. In one embodiment, the dilution fluid is water, and the wastewater containing the heavy metal complexes after recovery can be recycled by injection into a reservoir. | 06-12-2014 |
| 20140182850 | PROCESS FOR PRODUCING OIL - Heavy oil or bitumen is recovered by injecting an oil recovery formulation comprising ammonia and steam having a vapor quality of from greater than 0 to less than 0.7, or injecting components thereof, into an underground oil-bearing formation comprising oil or bitumen having a total acid number of at least 0.1 and producing oil or bitumen from the formation after injection of the oil recovery formulation, or components thereof, into the formation. | 07-03-2014 |
| 20140209303 | EXTRACTION OF HYDROCARBONS FROM HYDROCARBON-CONTAINING MATERIALS AND/OR PROCESSING OF HYDROCARBON-CONTAINING MATERIALS - A method of extracting hydrocarbon-containing organic matter from a hydrocarbon-containing material includes the steps of providing a first liquid comprising a turpentine liquid; contacting the hydrocarbon-containing material with the turpentine liquid to form an extraction mixture; extracting the hydrocarbon material into the turpentine liquid; and separating the extracted hydrocarbon material from a residual material not extracted. | 07-31-2014 |
| 20140216736 | SYSTEM AND METHOD FOR DELIVERING TREATMENT FLUID - A system includes a regional blending facility having a number of bulk receiving facilities, where each bulk facility receives and stores a particle type having a distinct size modality, a bulk moving device that transfers particles between the bulk receiving facilities and of a blending/continuously receiving vessel and/or a mixer, and a carrying medium vessel. The mixer receives particles from the blending/continuously receiving vessel and/or the bulk moving device, receives a carrying medium from the carrying medium vessel, mixes the particles with the carrying medium, and provides a mixed treatment fluid. The system includes a fluid conduit that fluidly couples a wellsite location with the regional blending facility, where the fluid conduit delivers the mixed treatment fluid to the wellsite and/or delivers produced fluid from a wellbore positioned at the wellsite to the regional blending facility. | 08-07-2014 |
| 20150013977 | METHOD OF USING CARBON DIOXIDE IN RECOVERY OF FORMATION DEPOSITS - The present invention relates to systems, apparatuses, and methods for providing a reliable, high purity source of CO | 01-15-2015 |
| 20150041127 | OIL/WATER SEPARATION METHOD, OIL-CONTAINING WATER TREATMENT METHOD, BITUMEN PRODUCTION METHOD AND SYSTEM THEREFOR - Provided is an oil/water separation method that is capable of decreasing the frequency of clogging. The method is for separating oil and water from each other that are generated by an in-situ recovery method for producing bitumen | 02-12-2015 |
| 20150083411 | AUTOMATED SYSTEMS AND METHODS FOR PRODUCTION OF GAS FROM GROUNDWATER AQUIFERS - Automated systems and methods of extracting gas from groundwater aquifers are provided. | 03-26-2015 |
| 20150107832 | Process To Produce Oil Or Gas From A Subterranean Formation Using A Chelating Agent - The present invention relates to a two-step process to produce oil or gas from a subterranean formation wherein in a first step the subterranean formation is treated with an aqueous composition containing a chelating agent selected from the group of glutamic acid N,N-di-acetic acid or a salt thereof (GLDA), aspartic acid N,N-diacetic acid or a salt thereof (ASDA), methylglycine N,N-diacetic acid or a salt thereof (MGDA), and N-hydroxyethyl ethylenediamine N,N′,N′-triacetic acid or a salt thereof (HEDTA) and wherein, in a next step, in the outlet streams from the subterranean formation the aqueous phase is separated from the non-aqueous phase. | 04-23-2015 |
| 20150129208 | CALCINER ENHANCED OIL RECOVERY - A method of supplying crushed alkaline carbonate from a carbonate resource to a first calcining site having a design calcining capacity; calcining the crushed carbonate within a prescribed carbon dioxide (CO2) delivery distance from a first enhancement location within a first hydrocarbon resource, whereby generating CO2 with a local CO2 generating capacity and an alkaline oxide; forming a first enhancing fluid comprising generated CO2 and delivering it into the first enhancement site having an injector well weighted first enhancement location, whereby mobilizing hydrocarbon in the first enhancement site; producing a produced fluid comprising mobilized hydrocarbon and enhancing fluid; recovering liquid hydrocarbon from the produced fluid; wherein the prescribed CO2 delivery distance is less than 67% of a remote CO2 delivery distance, to the first enhancement location from a remote calcining site having an equal or greater design calcined CO2 generating capacity. Then calcining CO2 to enhance a second larger site. | 05-14-2015 |
| 20150292314 | TREATMENT OF PRODUCED WATER WITH SEEDED EVAPORATOR - Produced water, for example from a steam assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) heavy oil recovery operation, is treated to recover water that is re-used to create steam. The produced water is treated in one or more thermal treatment devices such as an evaporator and a crystallizer. The thermal treatment device is seeded, for example with a calcium or magnesium salt. The thermal treatment device produces a blowdown or slurry comprising super-saturated solids and organic compounds. A solvent is added to the blowdown or slurry. The solids precipitate and are separated from the blowdown or slurry. The solvent may be recovered for re-use in treating more blowdown or slurry. | 10-15-2015 |
| 20150315055 | Water Treatment Process - A process for enhanced removal of impurities from water by an enhanced multi-step electrocoagulation process including electrocoagulation, solids separation, hardness removal, crystallization, and, optionally, reverse osmosis and evaporative purification. Embodiments of the invention may remove multiple impurities at substantial savings in time, energy, and chemical use. Zero liquid discharge options are also reported. | 11-05-2015 |
| 20150354332 | PROCESS FOR TREATING SUBTERRANEAN OIL-BEARING FORMATIONS COMPRISING CARBONATE ROCKS - Process for treating subterranean oil-bearing formations comprising carbonate rocks with an aqueous composition comprising cationic ammonium salts comprising four hydrocarbon radicals wherein at least one of the hydrocarbon radicals is substituted by an OH-group. The process may be a process for enhanced oil recovery, fracturing, acidizing or antiscale treatment. | 12-10-2015 |
| 20160047218 | METHOD OF FLASH-COOLING PRODUCED WATER AND HEATING STEAM GENERATOR FEEDWATER - An oil recovery process where produced water is cooled through a flash evaporization process and the resulting vapor is utilized to heat steam generator feedwater. | 02-18-2016 |
| 20160177697 | SUBSURFACE INJECTION OF REJECT STREAM | 06-23-2016 |
