Class / Patent application number | Description | Number of patent applications / Date published |
166275000 | Injected fluid comprises water and material other than inorganic gas | 41 |
20090120639 | Methods for controlling migration of particulates in a subterranean formation - Methods comprising: providing a subterranean formation penetrated by a well bore wherein the well bore comprises perforated casing that comprises a plurality of perforations, providing an acidic treatment fluid comprising an aqueous base fluid and an acid composition, placing the acidic treatment fluid in the well bore in a manner that allows the acidic treatment fluid to reduce debris present in the perforations, providing a consolidating agent, and placing the consolidating agent in a near well bore region. | 05-14-2009 |
20090211758 | Method of Oil Recovery Using a Foamy Oil-External Emulsion - An improved method of producing hydrocarbons from a subterranean formation in which a solids-stabilized emulsion (SSE) is formed, the SSE comprising oil as a first liquid, droplets of a second liquid suspended in the oil, and solid particles that are insoluble in both the oil and the second liquid at the conditions of the subterranean formation. The SSE with dissolved gas is injected into the subterranean formation as a drive fluid, and at least a portion of the SSE is placed into one or more area of the subterranean formation having an in situ pressure sufficiently lower than the selected partial pressure to permit evolution of at least a portion of the gas from the oil. Furthermore, a method of making the foamy SSE is also provided. | 08-27-2009 |
20090242201 | SYSTEM AND METHOD FOR POLYMER DISTRIBUTION TO WELL SITES - The invention relates to a polymer transport and distribution system comprising a vessel, pipeline or network of pipes containing polymer mother solution, and one or more pumps for transporting polymer mother solution from a first location to one or more injection well sites at a second remote location, each injection well comprising a polymer mother solution input feed line, a water input feed line, and a second pump for controlling mother solution flow rate and pressure upstream from the water input feed line, for producing polymer daughter solution from polymer mother solution and water, and injecting the resulting polymer daughter solution into an oil or gas field well. Also provided are methods of distributing polymer to one or more injection well sites in an oil or gas field. | 10-01-2009 |
20090260813 | Method for Terminating or Reducing Water Flow in a Subterranean Formation - This invention relates to a method of reducing the deleterious effects of water production in a subterranean formation by placing an aqueous phase polymer and/or resin, which at a designated set up time, solidifies and blocks water conduits. This invention pertains specifically to a method of conditioning well bores and placing the polymer and displacing the polymer and/or resin to establish post treatment gas and oil permeability. Novel polymers and/or resins for use as a water barrier are disclosed, typified by phenoformaldehyde containing 1-2 weight % of at least one of sodium bisulphite, sodium metabisulphite or mixtures thereof. The method includes selecting a well having sizable hydrocarbon reserves with a production history of decrease of oil or gas production with concurrent increase of water production. | 10-22-2009 |
20090277634 | Methods of pumping fluids having different concentrations of particulate with different concentrations of hydratable additive to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore - The inventions are for methods of forming and delivering a treatment fluid into a wellbore. In one aspect, methods are provided for pumping a first fluid having a relatively high concentration of a particulate suspended therein and pumping a second fluid having either none of the particulate or a relatively low concentration of the particulate suspended therein, and then merging at least the first and second fluids to form a treatment fluid having a merged concentration of the particulate. According to this aspect, the first fluid has a relatively high concentration of a hydratable additive and the second fluid has either none or a relatively low concentration of the hydratable additive. This helps reduce wear on the pumps. | 11-12-2009 |
20090308609 | WATER INJECTION SYSTEMS AND METHODS - There is disclosed a system comprising a well drilled into an underground formation; 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 ions and adding an agent which increases the viscosity of the water and/or increases a hydrocarbon recovery from the formation, and injects the water into the well. | 12-17-2009 |
20100032157 | Well stimulation - Disclosed are processes for improving recovery of product from a subterranean carbonaceous deposit wherein there has been a reduction in product recovery from a production well, the processes comprising treating the deposit with a liquid that contains at least one of an oxoacid ester of phosphorous or an oxoacid acid ester of sulfur. | 02-11-2010 |
20100126721 | SUBTERRANEAN WATER PRODUCTION, TRANSFER AND INJECTION METHOD AND APPARATUS - A method and apparatus is provided for diverting a ground water supply source located in a stratum that is hydraulically separated from a hydrocarbon-containing reservoir formation for injection into the reservoir proximate the oil-water interface to enhance the flow rate and production of the hydrocarbons through one or more well bores without pumping the injection water to the earth's surface. A submersible electric pump (ESP) and Y-tool assembly is positioned in the well bore at the level of the ground water supply and water is pumped down the well casing for injection into the formation, e.g., below the hydrocarbon-containing reservoir rock. Suitable seals, packers and cement plugs are provided to isolate the high pressure injection water from the ground water drawn into the first upper portion of the casing. | 05-27-2010 |
20100155063 | Particle Drilling System Having Equivalent Circulating Density - An injection system and method is described. In several exemplary embodiments, the injection system and method may be a part of, and/or used with, a system and method for excavating a subterranean formation. The system and method include a low density material injection to lower the circulating fluid equivalent circulating density. | 06-24-2010 |
20100163232 | GAS SEPARATOR - A combination liquid and gas separator and jetting tool includes a housing containing a rotatable drum, a stator in the inlet end of the housing for swirling a liquid/gas mixture, a rotor attached to the drum for rotation by the mixture; whereby the gas and liquid are separated. The liquid and gas are discharged through separate restricted orifices downstream of the drum. Orifices can be located in a rotating head for cleaning, cutting or other downhole operations. | 07-01-2010 |
20100175877 | METHOD OF DESIGNING AND EXECUTING A WELL TREATMENT - An apparatus and a method for treating a subterranean formation comprising designing a treatment that comprises a composition, wherein the design comprises a pressure influence on a viscosity of the composition, and performing the treatment, wherein the composition is not an energized fluid. An apparatus and a method wherein the viscosity is at least partially estimated based on experimental rheological data collected at pressures below about 500 psi and/or at a pressure that is about 1 atm to about 2,000 atm. | 07-15-2010 |
20100224365 | METHOD OF TREATING A SUBTERRANEAN FORMATION AND FORMING TREATMENT FLUIDS USING CHEMO-MATHEMATICAL MODELS AND PROCESS CONTROL - A method of treating a subterranean formation penetrated by a wellbore is carried out by preparing a treatment fluid at a surface location based upon an initial model of fluid properties for the treatment fluid. The treatment fluid is formed from a first fluid stream and at least one additive fluid stream that are combined to form a treatment fluid stream that is introduced into the wellbore in a substantially continuous process. A fluid property of at least one of the streams is monitored while forming the treatment fluid to provide at least one monitored fluid property of the at least one of the streams. The model is updated based upon the at least one monitored fluid property during the substantially continuous process. Optionally, at least one of the first fluid stream and the at least one additive stream is adjusted as necessary based upon the updated model. | 09-09-2010 |
20100252260 | Method and Apparatus For Flow Assurance Management In Subsea Single Production Flowline - Managing hydrates in a subsea includes a host production facility, a production cluster comprising one or more producers, a water injection cluster comprising one or more water injectors, a water injection line, and a single production line for directing production fluid from the one or more producers to the host production facility. The methods comprise placing a pig in the subsea production system, shutting in production from the producers, and injecting a displacement fluid into the subsea production system in order to displace the hydrate inhibitor and any remaining production fluids in the production flowline and to further move the pig through the production flowline. The method may also include further injecting displacement fluid into the subsea production system in order to displace the hydrate inhibitor and pig through the single production line and to the host production facility. | 10-07-2010 |
20110114311 | METHOD OF PRODUCING HYDROCARBON FLUID FROM A LAYER OF OIL SAND - A method of producing hydrocarbon fluid from a layer of oil sand located in an earth formation, the method comprising creating at least one borehole in the earth formation, including a discharge borehole having a borehole section extending in a selected direction at an angle of less than 45 degrees with an upper and/or lower boundary of the layer and being provided with a liner of a length adapted to be changed, and creating a cavity in the layer of oil sand, the cavity being in fluid communication with said borehole section; extending the cavity in the selected direction by operating fluid jetting means via said at least one borehole to jet a stream of fluid against a wall of the cavity; changing the length of the liner in correspondence with extension of the cavity in the selected direction; and transporting a slurry of fluid and oil sand, resulting from operation of the fluid jetting means, from the cavity via the discharge borehole to a processing facility for processing the slurry. | 05-19-2011 |
20110120711 | A METHOD OF CONSOLIDATING A FRACTURE IN A FORMATION - A method of consolidating a fracture in a formation comprises injecting a solution of an alkali metal silicate into the formation causing the solution to react with the surfaces of the calcium containing inorganic compound deposits, locking the fine material on these surfaces in place and preventing fines generation during production in a well. | 05-26-2011 |
20110132603 | OFFSET INTERIOR SLURRY DISCHARGE - A slurry discharge device for use in a subterranean well can include a slurry flow passage extending longitudinally in the device. The slurry flow passage has flow passage sections. One flow passage section is positioned downstream of, and is laterally offset relative to, another flow passage section. Another slurry discharge device can include the slurry flow passage having multiple flow areas. One flow area is positioned in a downstream direction from, and is greater than, another flow area. A method of delivering a slurry into a subterranean well can include discharging the slurry from a tubular string through a first sidewall section of a slurry discharge device; and flowing only a returned fluid portion of the slurry through a second sidewall section of the slurry discharge device. The second sidewall section has a lateral thickness greater than a lateral thickness of the first sidewall section. | 06-09-2011 |
20110203792 | SYSTEM, METHOD AND ASSEMBLY FOR WELLBORE MAINTENANCE OPERATIONS - Methods for performing a wellbore maintenance operation on a system of wellbores used for improved oil recovery are disclosed. A plurality of wellbores are drilled and perforated to receive production fluids from a reservoir. The wellbores are fluidly connected to a production well that is drilled to a depth below the perforations of the wellbores. The production fluids drain and collect in the production well for delivery to the surface. A pump can be used for delivering the production fluids from the production well. During repair and maintenance operations, a fluid is injected into the production well for safely removing the pump components. The fluid is counterbalanced by the pressures in the connected wellbores such that the fluid does not rise above the perforations in the connected wellbores. | 08-25-2011 |
20110214859 | Clean Viscosified Treatment Fluids and Associated Methods - Treatment fluids comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand are provided. The present invention provides methods of using the treatment fluids in subterranean formations. One example of a suitable method includes providing a fracturing fluid comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand and introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation. | 09-08-2011 |
20110214860 | Clean Viscosified Treatment Fluids and Associated Methods - The present invention relates to low environmental impact treatment fluids comprising a compliant crosslinking agent, and methods of use employing such treatment fluids to treat subterranean formations. The methods include providing a low environmental impact treatment fluid including an aqueous base fluid, a viscosifying agent, and a compliant crosslinking agent that comprises an iron ion and a non-iron crosslinking metal ion; and placing the treatment fluid in a subterranean formation. In some embodiments, the viscosifying agent may be a compliant viscosifying agent. | 09-08-2011 |
20110220354 | POLYMER GELS AS FLOW IMPROVERS IN WATER INJECTION SYSTEMS - A water injection system that includes a primary water injection line; an injection fluid supply tank; a high pressure injection pump in fluid communication with the injection fluid supply and primary water injection line for pumping injection fluid in injection fluid supply tank through the primary water injection line; a polymer gel supply tank; and a high pressure chemical injection pump in fluid communication with the polymer gel supply tank and the water injection line configured to pump polymer gel having a viscosity of at least about 50,000 cP (at 20° C. measured using a Bohlin Rheometer CSR 50, cone and plate measuring system CP 4°/40 mm, single shear rate 1/s) in the polymer gel supply tank into the water injection line for mixture with injection fluid is disclosed. | 09-15-2011 |
20110232905 | Zero Shear Viscosifying Agent - This invention is generally related to using treatments fluids having additives that modify rheological characteristics. Some embodiments of the present invention provide methods of using treatment fluids comprising an aqueous fluid and an associative polymer additive, wherein the associative polymer additive increases the PV of the treatment fluid by more at least 50% and wherein the associative polymer additive increases the yield point by no more than about 30% of the corresponding increase in the PV relative to a treatment fluid without the associative polymer additive in a portion of a subterranean formation. | 09-29-2011 |
20110232906 | Methods and Compositions for Sand Control in Injection Wells - The present invention relates to fluids useful for treating injection wells to prevent or to reduce migration of particulates therein. Some embodiments of the present invention describe methods of introducing a tackifying treatment fluid through an injection well and into a portion of a subterranean formation surrounding the injection well, wherein the tackifying treatment fluid comprises a base fluid and a tackifying agent. Other embodiments include a stop of introducing a resin treatment fluid to the injection well before the tackifying treatment fluid. | 09-29-2011 |
20110259586 | WATER TREATMENT USING A DIRECT STEAM GENERATOR - The present method produces treated water from a direct steam generator. The method begins by injecting water into a direct steam generator. The injected water is then vaporized with the direct steam generator to produce steam and an effluent stream. The combustible water impurities in the water are then combusted inside a chamber in the direct steam generator and the solid particles are removed from the effluent stream to produce a treated stream. | 10-27-2011 |
20110272155 | System and method for fluid treatment - A method of treating a wellbore servicing fluid includes disposing an ultraviolet treatment chamber in fluid communication with an inlet of a pump, operating the pump, and drawing a wellbore servicing fluid through the ultraviolet treatment chamber in response to operating the pump. A wellbore servicing fluid treatment system has a first ultraviolet treatment chamber and a first pump in selective fluid communication with the first ultraviolet treatment chamber. The pump is downstream relative to the first ultraviolet treatment chamber and the pump is configured to selectively draw a wellbore servicing fluid through the first ultraviolet treatment chamber. A method of servicing a wellbore includes connecting an ultraviolet fluid treatment system to a blender, operating a pump of the blender, drawing a wellbore servicing fluid through the ultraviolet treatment system in response to operating the pump of the blender, and delivering the wellbore servicing fluid into the wellbore. | 11-10-2011 |
20110278002 | HYDROCARBON RECOVERY PROCESS - A method for increasing the recovery of crude oil from a reservoir comprising at least one oil-bearing porous subterranean formation having a permeability of greater than 10 millidarcies wherein (a) crude oil and connate water are present within the pore space of the formation rock, and (b) the crude oil that is present in the formation has an American Petroleum Institute (API) gravity of less than 30°, a viscosity under reservoir conditions of greater than 1 centipoise, and undissolved solids suspended therein, the method comprising: (A) injecting an injection water into the formation wherein the injection water has undissolved solids suspended therein, a total dissolved solids content (TDS) of 30,000 ppm or less, and a ratio of the total multivalent cation content of the injection water to the total multivalent cation content of the connate water of less than 0.9; and (B) producing within the hydrocarbon-bearing formation an emulsion comprising a discontinuous aqueous phase and a continuous oil phase (hereinafter “water-in-oil” emulsion) wherein the total amount of undissolved solids suspended in the injection water and of undissolved solids suspended in the crude oil is sufficient for the emulsion to have an undissolved suspended solids content of at least 0.05% by weight (0.5 kg/m | 11-17-2011 |
20110308798 | SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS - A system for producing oil and/or gas from an underground formation comprising a first well above the formation; the first well comprises a mechanism to inject a miscible enhanced oil recovery formulation into the formation; the first well comprises a first tubular and a second tubular, the first tubular threadingly engaged with the second tubular; a thread compound disposed on at least one of a thread of the first tubular and a thread of the second tubular; the thread compound comprises an additive adapted to swell when exposed to the miscible enhanced oil recovery formulation | 12-22-2011 |
20110315379 | PRODUCING HYDROCARBON MATERIAL FROM A LAYER OF OIL SAND - A method of producing hydrocarbon material from a layer of oil sand in an earth formation, the layer having a thickness and extending in an extension direction for more than its thickness, the method comprising: an injection borehole having an injection borehole section extending in an injection borehole direction and a discharge borehole having a discharge borehole section extending in a discharge borehole direction below the injection borehole section, wherein both the injection and the discharge borehole directions deviate less than 45 degrees from the extension direction; creating a cavity in the layer, the cavity being in fluid communication with both the injection and the discharge borehole sections; extending the cavity by operating fluid jetting means via the injection borehole against a wall of the cavity to obtain a slurry; and withdrawing the slurry from the cavity via the discharge borehole to a processing facility. | 12-29-2011 |
20120125611 | 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 monovalent ions, and then injects the water into the well. | 05-24-2012 |
20120145388 | In Situ Process to Recover Methane Gas from Hydrates - This invention consists of a method to enable methane recovery from hydrate reservoirs. The invention, in particular, relates to a Saltwater Hydrate Extraction Process (SHEP) in which high salinity water is injected into a hydrate reservoir into a lower horizontal well to promote and control gas production by hydrate decomposition to an upper deviated production well. | 06-14-2012 |
20120160485 | Treatment of Subterranean Formations - A method of preparing and using a subterranean formation stabilization agent. The stabilization agent includes a guanidyl copolymer and may be admixed with a fracturing fluid and optionally brine. The stabilization agent is effective in preventing and/or reducing, for example, clay swelling and fines migration from a subterranean formation contacted with the stabilization agent. | 06-28-2012 |
20120255731 | PROCESS FOR PRODUCING MINERAL OIL FROM UNDERGROUND FORMATIONS - The present invention relates to a process for producing mineral oil from underground formations, wherein, in one process step, permeable regions of the underground formation are blocked by injecting aqueous formulations of hydrophobically associating copolymers into the formation. | 10-11-2012 |
20120261124 | RECOVERY OF OIL - A method of recovering oil from a subterranean formation which includes an association production well involves contacting oil in the formation with a treatment fluid formulation which includes polyvinylalcohol and collecting oil which is being contacted with said treatment fluid formulation by said production well. Use of the polyvinylalcohol, optionally in combination with other materials, facilitates recovery of oil from subterranean formation, particularly those involving medium or high viscosity oils. | 10-18-2012 |
20130048279 | SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS - A system for producing oil and/or gas from an underground formation comprising a well above the formation; a mechanism to inject an enhanced oil recovery formulation into the formation, the enhanced oil recovery formulation comprising water and an additive; and a mechanism to produce oil and/or gas from the formation. | 02-28-2013 |
20130180712 | METHOD FOR ACCELERATING HEAVY OIL PRODUCTION - A method of drilling a first well and a second well into the reservoir includes forming a conduit between the first well and the second well. The conduit is filled with a conduit material. Finally, a low viscosity fluid is injected into the conduit to establish fluid communication between the first well and the second well. | 07-18-2013 |
20140144628 | CROSSLINKING OF SWELLABLE POLYMER WITH PEI - The invention is directed to stable and labile crosslinked water swellable polymeric microparticles that can be further gelled, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker comprising PEI or other polyamine based tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker and swelling of the particle, so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric microparticles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the microparticle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery. | 05-29-2014 |
20140345862 | Oil Recovery Process - A method of recovering oil from a subterranean oil-bearing reservoir uses an injection fluid comprising a viscosifying polymer in a low salinity water. The reservoir is penetrated by one or more injection wells and by one or more production wells. The method comprises injecting the injection fluid into at least one of the injection wells in a slug size in the range of 0.4 to 1.5 pore volumes (PV). | 11-27-2014 |
20140367098 | HYDROPHOBIC COMPOUND EMULSIONS FREE OF SILICON AND FLUORINE FOR AN OIL RECOVERING METHOD THAT MODIFIES THE WETTABILITY OF ROCKS FROM HYDROPHILIC TO OLEOPHILIC - An oil recovery method by the modification of the rock wettability from hydrophilic to oleophilic using hydrophobic compounds. Specifically, the method relates to the application of oil-type emulsions in water based on hydrophobic compounds free of silicon and fluorine to increase the oil recovery in mature sandstone-type reservoirs after the injection of water. | 12-18-2014 |
20150027698 | METHOD OF LIFTING OIL FROM A WELL - In a well, the method of lifting oil to the surface that utilizes the hydrostatic pressure, the stored energy in a column of fluid in a tubing string to power a down hole pump that is controlled by a directional switching control valve that selectively directs said hydrostatic pressure to said pump resulting in a flow of production fluid into another string of tubing that conducts that fluid up to the surface. | 01-29-2015 |
20160186546 | METHODS OF PRODUCING HYDROCARBONS FROM A WELLBORE UTILIZING OPTIMIZED WATER INJECTION - A method of recovering hydrocarbons from a subterranean formation includes placing a wellbore in the formation, wherein the wellbore is approximately horizontal and the median pore throat diameter of the subterranean formation is less than 500 nanometers; forming one or more fractures in the formation in fluid communication with the wellbore; recovering in situ hydrocarbons from the formation through the wellbore; injecting a volume of fluid, comprising greater than 98 mass % water and greater than 0.005 mass % active surfactant and excluding ultra-high molar weight polymers, into the formation through the wellbore; and subsequently recovering in situ hydrocarbons from the subterranean formation. | 06-30-2016 |
20160186547 | METHODS OF PRODUCING HYDROCARBONS FROM A WELLBORE UTILIZING OPTIMIZED HIGH-PRESSURE WATER INJECTION - A method of recovering hydrocarbons from a subterranean formation includes placing a wellbore in the formation, wherein the wellbore is approximately horizontal in the formation; forming one or more fractures in the formation in fluid communication with the wellbore; recovering hydrocarbons from the formation through the wellbore; injecting a volume of fluid comprising greater than 98 mass % water and greater than 0.005 mass % active surfactant into the formation through the wellbore, wherein at least 10 mass % of said volume is injected at a bottom hole pressure at the heel of the wellbore that is less than the minimum horizontal stress in at least a portion of the overburden and at least 5 mass % of said volume is injected at a bottom hole pressure at the heel of the wellbore that is greater than the median minimum horizontal stress in the subterranean formation; and subsequently recovering in situ hydrocarbons from the subterranean formation. | 06-30-2016 |
20160200969 | STABILISED COMPOSITIONS CONTAINING ACRYLAMIDE POLYMERS, AND METHOD FOR THE TERTIARY PRODUCTION OF CRUDE OIL USING SAID COMPOSITIONS | 07-14-2016 |