Abstract: Methods and apparatus are provided for disposal of Fat, Oil and Grease (FOG) wastes in subterranean formations, and for disposal of low-density organic wastes in subterranean, brine-filled caverns.

Abstract: A downhole tool comprises a heater including a container enclosing a volume of compacted thermite. A volume of flowable alloy is provided above the heater. A fusible bulkhead may be provided between the heater and the alloy and provides for direct conduction of heat from the heater to the alloy. A housing containing the alloy may be separated from the heater by heating a fusible socket that anchors an end of a tensioned support member. The thermite may define an internal volume adapted to receive alloy. The heater may be activated to melt the alloy and the alloy may then solidify to form a bore-sealing plug.

Abstract: A self-healing cement structure may be used for repairing defects. An example method of using such a cement structure includes: providing a cement structure in a wellbore, wherein the cement structure includes: a cement and elastomer particles at 1% by weight of the cement (bwoc) to 25% bwoc; applying heat to the cement structure to heat at least a portion of the elastomer particles above a melting point of an elastomer of the elastomer particles to cause at least a portion of the elastomer to melt and infiltrate into a defect in the cement structure; and allowing the elastomer to cool below the melting point of the elastomer to yield a repaired cement structure.

Abstract: An assembly and a method for cooling a downhole logging tool. The assembly includes a coiled tubing assembly having a downhole logging tool and a coiled tubing pipe. The coiled tubing pipe is coupled to the downhole logging tool. The coiled tubing pipe includes a cooling fluid tube. The cooling fluid tube conducts a cooling fluid to the downhole logging tool.

Abstract: A method for controlling operations at a well site using carbon dioxide includes diverting a portion of carbon dioxide flowing through a main supply line into a slipstream line fluidly connected to the main supply line to create a carbon dioxide slipstream. The method further includes directing the carbon dioxide slipstream to one or more control modules at the well site, and operating equipment associated with an operation at the well site by flowing a portion of the carbon dioxide slipstream via the one or more control modules to the equipment. A related carbon injection system includes an injection tree, a carbon dioxide slipstream, a control module, and a slipstream line fluidly connected to a main supply line. The injection tree is configured to receive a flow of carbon dioxide via the main supply line for injection into a subterranean formation.

Abstract: A power system adapted for supplying power in a high temperature environment is disclosed. The power system includes a rechargeable energy storage that is operable in a temperature range of between about seventy degrees Celsius and about two hundred and fifty degrees Celsius coupled to a circuit for at least one of supplying power from the energy storage and charging the energy storage; wherein the energy storage is configured to store between about one one hundredth (0.01) of a joule and about one hundred megajoules of energy, and to provide peak power of between about one one hundredth (0.01) of a watt and about one hundred megawatts, for at least two charge-discharge cycles. Methods of use and fabrication are provided. Embodiments of additional features of the power supply are included.

Abstract: Disclosed is a grouting and water blocking method for a hard rock stratum. The grouting and water blocking method include the following steps. At first, hydrogeological information and coal seam information of a hard rock stratum is obtained. Then, a drilling trajectory of the hard rock stratum is determined based on the hydrogeological information and the coal seam information. Later, at least one drilling device is determined corresponding to the drilling trajectory based on types of multiple rock layers contained in the hard rock stratum. After that, the multiple rock layers contained in the hard rock stratum are drilled sequentially according to the drilling trajectory using the at least one drilling device. At last, in response to determining there is a water leakage area, the water leakage area is grouted.

Abstract: A system and method for harnessing geothermal energy using fracturing of hot rock. The system has at least a first well and a second well. The method involves introducing an alkali metal downhole in a first well. A solution is also introduced into the first well. The solution produces an exothermic reaction with the alkali metal. The gas and heat fracture the hot rock producing fractures. The fractures fluidly connects the first well to the second well. A solution, such as water, can be pumped through the first well, through the fractures, and into the second well. The hot rock passes geothermal energy to the water which can then be utilized.

Abstract: Coaxial transmission lines and methods of providing thereof are disclosed. The coaxial transmission lines include an inner conductor extending between first and second ends along a longitudinal axis, an outer conductor surrounding the inner conductor along the longitudinal axis, and at least one linear actuator coupled to the inner conductor at the first end for applying a tension force to the inner conductor. The second end of the inner conductor is fixed to an electromagnetic load. The methods involve providing an inner conductor having a longitudinal axis and extending from a first end to a second end; fixing the second end of the inner conductor to an electromagnetic load; providing an outer conductor that surrounds the inner conductor; coupling at least one linear actuator to the inner conductor at the first end; and actuating the at least one linear actuator to apply a tension force to the inner conductor.

Abstract: A process for workover of a hydrocarbon recovery well, wherein hydrocarbons are mobilized and well pressure increased by steam injection, the hydrocarbons produced to surface in emulsion fluids. The emulsion fluids are directed into a produced emulsion line at surface at a first pressure, steam injection is then discontinued into the well while continuing emulsion production at reduced pressure, at least some of the emulsion fluids are redirected to an additional line at a second pressure lower than the first pressure as pressure in the well decreases, the emulsion fluids are pumped from the additional line into the produced emulsion line at a third pressure higher than the second pressure, and a well kill fluid is injected into the well to allow the workover after the well pressure decreases.

Abstract: A system and method for converting non-potable water into potable water. Non-potable water, such as sea water or non-potable ground water, and the like, is fed down a conduit into a deep underground enclosure. Due to its extreme depth, the enclosure is geothermally heated above the boiling point of water at the pressure within the enclosure. The water boils and creates water vapor. The water vapor rises and can be drawn up through a vapor conduit to the surface. The water vapor can be condensed (and further purified, if necessary) into potable water. The steam can be used in a hybrid system, and condensed after being used for heating purposes or electrical production. Prior to being sent down into the enclosure, the source of non-potable water can be used in counter current heat exchange to reduce the temperature of the water vapor rising through the vapor conduit.

Abstract: Described herein is a combination of a catalyst and an activator and method of use for causing an exothermic reaction in a low temperature environment. The mixture can include sodium nitrite, an ammonium-based compound, a catalyst that comprises an oxidizer, and an activator and can be injected into a fluid flow path. The fluid flow path can be a pipeline, a flowline, a wellbore, or a subterranean formation. The mixture can cause an exothermic reaction in the fluid flow path and remove, using the exothermic reaction, a damaging material from the fluid flow path.

Abstract: A method of generating a reaction product from a feedstock via a centrifuge reactor that includes introducing a flow of feedstock to a centrifuge reactor, the centrifuge reactor including: a central rotational axis X, and a centrifuge assembly having a reaction chamber with the centrifuge assembly configured to rotate about the central rotational axis X. The method further includes rotating the centrifuge assembly about the central rotational axis X at a tip speed to generate an acceleration gradient from the central rotational axis X and from a first reaction chamber end to a second reaction chamber end and generating reaction conditions in the reaction chamber, the reaction conditions and acceleration gradient causing a separation of products from a reaction of the feedstock within the reaction chamber.

Abstract: A downhole tool for use in a gas or oil well is provided. The tool comprising a length of tubing having at least one annular sealing means mounted on the outer surface thereof. The annular sealing means, which are formed from a eutectic/bismuth based alloy, serve to secure the downhole tool in position within an oil or gas well during so that the tool can carry out its function.

Abstract: A downhole tool is described comprising a housing (24), a fluid flow passage (28) located within (5) the housing (24), and at least one thermoelectric generator (30) located between the fluid flow passage (28) and the housing (24) and operable to generate an electrical output in the event of there being a temperature difference between, in use, the fluid within the fluid flow passage (28), and fluid in contact with the exterior of the housing (24).

Abstract: A steam supply system having a wet steam source and a steam separator disposed to separated wet steam into dry saturated steam and a saturated condensate. The dry saturated steam is heated in a superheater to produce superheated steam, while the saturated condensate is cooled in a subcooler to produced subcooled condensate with a target temperature selected to prevent immediate evaporation of the subcooled condensate when mixed with the superheated steam. The subcooled condensate is sprayed into a stream of superheated steam using spray nozzles and gradually evaporates downstream of the spray nozzles to produce process steam of a desired % quality. A cooling fluid passing through the subcooler is utilized to cool the saturated condensate. The flow rate of the cooling fluid through the subcooler can be utilized to achieve process steam of a desired % quality.

Abstract: Apparatus, method and wellbore installation to mitigate heat damage to well components during high temperature fluid injection operations such as steam injection from surface through a wellbore. The apparatus includes an injection tubing that conveys the high temperature fluid to an injection zone and an isolation packer through which a lower end of the injection tubing passes. A pipe extends alongside the injection tubing with an outlet end close above the packer. When the apparatus is installed in a wellbore, the pipe creates a cooling fluid circuit that flows from just above the packer up in the wellbore alongside the outer surface of the injection tubing to surface and then back into the pipe.

Abstract: A system for producing a wellbore fluid including a process fluid source, a rotating apparatus, and a motor directly coupled to the rotating apparatus. The motor is configured to receive a coolant and transfer heat from the motor to the coolant. The rotating apparatus is configured to receive process fluid from the process fluid source and mix the process fluid received from the process fluid source with one or more additives to produce a wellbore fluid. The coolant transfers heat to the process fluid, the wellbore fluid or both.

Abstract: A eutectic metal alloy is placed through a coiled tubing into a wellbore formed in a subterranean formation. The eutectic metal alloy includes a mixture of multiple metals. The eutectic metal alloy has a melting temperature that is less than a melting temperature of each individual metal of the multiple metals making up the eutectic metal alloy. The eutectic metal alloy is heated to a temperature equal to or greater than the melting temperature of the eutectic metal alloy to liquefy the eutectic metal alloy. The liquefied eutectic metal alloy is flowed from the wellbore and into the subterranean formation, thereby exposing the liquefied eutectic metal alloy to a specified downhole temperature within the subterranean formation and causing the liquefied eutectic metal alloy to solidify to form a seal. The seal prevents fluid from flowing from the wellbore and into the subterranean formation.

Abstract: A well tool device having a movable partition device within a housing, the partition device separating an inner volume of the housing into a first compartment and a second compartment, a pyrotechnic mixture in the first compartment, and a fluid line providing fluid communication between the second compartment and an outside of the housing. A method includes, while running the well tool device into the well, equalizing a pressure difference between the second compartment and an ambient pressure outside of the housing, by means of allowing fluids to enter the second compartment through the fluid line, while running the well tool device into the well, equalizing a pressure difference between the first compartment and a pressure inside the second compartment, by means of the partition device being affected by the pressure inside the second compartment, installing the well tool device in the well, and igniting the pyrotechnic mixture.

Abstract: An outdoor unit of an air-conditioning apparatus includes: a refrigerant circuit in which a compressor and an outdoor-side heat exchanger are connected by a refrigerant pipe; an outdoor-side fan that sends air to the outdoor-side heat exchanger; and a controller including an inverter circuit configured to drive the compressor.

Abstract: Elongate capsules for housing waste are configured for disposal (placement) into wellbore(s) that are located in particular deep underground geologic formation(s). These capsules have opposing structures for physically linking multiple capsules together in an end-to-end fashion. These opposing end structures may include a stinger with pins at a top end of the capsule; and a J-slots structure at the bottom end of the capsule. The stinger with pins of a first capsule may be (removably) attached to the J-slots of a second capsule. Further, a retrieval-tool also has the J-slots structure at one end. The J-slots structure of the retrieval-tool may be configured to (removably) attach to a stinger with pins of a given capsule (which may be linked to other capsule(s)); and then the retrieval-tool may be used to retrieve the given capsule(s) from a given wellbore. Capsule retrieval systems and/or method may utilize such capsule(s) and the retrieval-tool.

Abstract: Geothermal production monitoring systems and related methods are disclosed herein. An example system includes a production well, an injection well, a downhole pump or a downhole compressor to control a production of a multiphase fluid including steam from the production well, a first fluid conduit to transport the multiphase fluid away from the production well, a surface pump disposed downstream of the first fluid conduit, and a second fluid conduit. The surface pump is to inject water into the injection well via the second fluid conduit. A flowmeter is fluidly coupled to the first fluid conduit. The example system includes a processor to control at least one of (a) the downhole pump or the downhole compressor or (b) the surface pump in response to fluid property data generated by the first flowmeter.

Abstract: An apparatus and method for electromagnetic heating of a hydrocarbon formation. The apparatus includes an electrical power source; at least one electromagnetic wave generator for generating alternating current; at least two transmission line conductors positioned in the hydrocarbon formation; at least one waveguide for carrying the alternating current from the at least one electromagnetic wave generator to the at least two transmission line conductors; and a producer well to receive heated hydrocarbons from the hydrocarbon formation. The transmission line conductors are excitable by the alternating current to propagate a travelling wave within the hydrocarbon formation. At least one of the transmission line conductors include a primary arm and at least one secondary arm extending laterally from the primary arm. The at least one secondary arm includes at least one electrically isolatable connection for electrically isolating at least a portion of the secondary arm.

Abstract: A steam supply system having a wet steam source and a steam separator disposed to separated wet steam into dry saturated steam and a saturated condensate. The dry saturated steam is heated in a superheater to produce superheated steam, while the saturated condensate is cooled in a subcooler to produced subcooled condensate with a target temperature selected to prevent immediate evaporation of the subcooled condensate when mixed with the superheated steam. The subcooled condensate is sprayed into a stream of superheated steam using spray nozzles and gradually evaporates downstream of the spray nozzles to produce process steam of a desired % quality. A cooling fluid passing through the subcooler is utilized to cool the saturated condensate. The flow rate of the cooling fluid through the subcooler can be utilized to achieve process steam of a desired % quality.

Abstract: A steam supply system includes a steam generator disposed to produce wet steam for introduction into a steam separator. The steam separator includes a saturated condensate outlet. A superheater receives dry saturated steam from the steam separator and produces superheated steam. An evaporator with an evaporator vessel having a saturated condensate inlet, a soluble solids slurry outlet and a dry steam outlet is in fluid communication with the saturated condensate outlet of the steam separator. Disposed within the evaporator vessel is a superheated steam heat exchanger having a superheated steam outlet and a superheated steam inlet which superheated steam inlet is in fluid communication with the superheater to receive superheated steam. The dry steam outlet of the evaporator is in fluid communication with a steam mixing vessel where the dry steam is mixed with superheated steam from the superheated steam outlet of the heat exchanger.

Abstract: A method of sealing a subsurface bore comprises: locating a volume of thermite in the bore; locating a volume of alloy in the bore with the thermite; initiating reaction of the thermite to heat the alloy; and bringing the alloy to above the melting point of the alloy whereby the alloy flows and occludes the bore. The thermite may retain its initial form during or following reaction or may partially fluidise. The thermite may react to provide a platform that at least partially occludes the bore. The alloy may flow over a surface of the thermite.

Abstract: Offshore systems and methods may be configured for offshore power generation and carbon dioxide injection for enhanced gas recovery for gas reservoirs. For example, a method may include: providing an offshore facility including a gas turbine, and a gas separator; producing a produced gas from a gas reservoir to the offshore facility; combusting the produced gas in a gas turbine to produce power and a flue gas; at least partially removing nitrogen from the flue gas in a gas separator to produce a carbon dioxide-enriched flue gas and a nitrogen-enriched flue gas; compressing the carbon dioxide-enriched flue gas in a gas compressor to produce a compressed gas; and injecting the compressed gas from the gas compressor into the gas reservoir, wherein 80 mol % or more of hydrocarbon in the produced gas is combusted and/or injected into the gas reservoir.

Abstract: An economical ground heat exchanger system uses water-filled membrane liners in cylindrical augured holes. A submersible pump in a drain reservoir is shared by multiple boreholes. Thermal connection with a building or industrial process occurs through a heat exchanger thermally coupled to the reservoir. The pump sends water tempered by the heat exchanger to the water-filled holes, where it exchanges heat with the ground before overflowing through gravity drain piping back to the reservoir for continued recirculation. Heat transfer with the ground occurs through thermal contact between the water, the membrane liners, and earth supporting the liners. Optional raised borehole support rims maintain an “above grade” water level and allow removed soil to be re-used as a berm or planter over manifold pipes that connect the system components, thus eliminating the cost of trenching for the manifold pipes.

Abstract: An intra-layer reinforcement method, and a consolidation and reconstruction simulation experiment system and an evaluation method for a gas hydrate formation are provided. In the intra-layer reinforcement method, the formation reconstruction and fracturing grouting reinforcement technologies are combined; a fracturing grouting process is adopted to create fractures in the gas hydrate formation; and a consolidation liquid enters the fractures and penetrates into the formation through a pressure difference to form a reinforcement with a ribbed slab structure and a specified strength and permeability, which supports the formation to achieve collapse prevention and sand prevention.

Abstract: A system for enhanced oil and gas recovery. The system can comprise a boiler. The system can further comprise at least two capillaries in fluid communication with the boiler. The at least two capillaries can be disposed in an injector pipe and each one of the capillaries can include a flow control device for controlling an injection of steam in at least one of a chamber and a well for enhanced oil and gas recovery.

Abstract: A geothermal heat utilization system includes a first well having a first upper opening and a first lower opening, and a second well having a second upper opening and a second lower opening. The geothermal heat utilization system further includes a first pipe, a second pipe, a first heat exchanger, and a second heat exchanger. The geothermal heat utilization system is capable of supplying underground water of an upper aquifer from the first upper opening to the second upper opening via the first pipe, and the geothermal heat utilization system is capable of supplying underground water of a lower aquifer from the second lower opening to the first lower opening via the second pipe.

Abstract: The geothermal heat utilization system is capable of supplying underground water of an upper aquifer from the first upper opening to the second upper opening via the first pipe, and capable of supplying underground water of a lower aquifer from the second lower opening to the first lower opening via the second pipe. Further, the geothermal heat utilization system is configured to pump hot water and at the same time, pump cold water.

Abstract: A production stream is received from a well formed in a subterranean formation. The production stream includes a gaseous portion and a liquid portion. The liquid portion has a base sediment and water (BS&W) percentage. At least a portion of the gaseous portion of the production stream is combusted to produce a flaring byproduct stream. The flaring byproduct stream is flowed through a coiled tubing to the well. The BS&W percentage of the liquid portion of the production stream is measured. The flow of the flaring byproduct stream to the well is decreased in response to the BS&W percentage reaching a threshold BS&W percentage.

Abstract: A method for reducing breakdown pressure at a formation includes detecting a tight reservoir formation in a well and providing hydraulic fracturing equipment assembled together as a hydraulic fracturing system at a surface of the well. The hydraulic fracturing system includes a fluid source containing a base fluid and fluidly connected to a blender and a pump and manifold system fluidly connecting an outlet of the blender to a wellhead of the well. The method further includes connecting a cooling system to the hydraulic fracturing system, using the cooling system to cool the base fluid to a cooled base temperature upstream of the pump and manifold system, pumping the cooled base fluid down the well to the tight reservoir formation, and using the cooled base fluid to lower a temperature of the tight reservoir formation and reduce a breakdown pressure of the tight reservoir formation.

Abstract: The present disclosure is for an inverted diffuser usable in wellheads and other wellsite equipment. The inverted diffuser includes at least one first section having a first vertical inner surface, a first inclined inner surface relative to the first vertical inner surface, and one or more channels supporting one or more releasable fasteners between the at least one first section and a wall of a wellhead or of a wellsite equipment. At least one second section is press-fitted or fastened adjacent to the at least one first section. A method for application of the inverted diffuser in a wellhead and in other wellsite equipment is also disclosed, along with a method of manufacture of the inverted diffuser.

Abstract: Provided is a graphene heating thermal preservation sleeve for a wellhead of an oil-gas well in an oil field, the sleeve comprises a high-temperature-resistant thermal preservation layer (1), a graphene layer (2), an electrode layer (3), a high-temperature-resistant ceramic layer (4), a waterproof anti-static thermal preservation layer (5) and a housing (6) tightly attached together in sequence. Two parts of the heating thermal preservation sleeve are buckled together to enclose an oil-gas well wellhead apparatus (5) needing to be heated. When the electrode layers (3) at the two ends of the graphene layer (2) are electrified, under the action of an electric field, heat energy generated by violent friction and impact between carbon atoms of graphene is radiated out by means of far infrared rays with a wavelength in a range of 5-14 micrometers, for heating and thermal preservation of the oil-gas well wellhead apparatus (15) in an oil field.

Abstract: A method creates a fluid communication path between a first production well and a second production well. At least one hydraulic fracture intersects the first production well and is separated from the second production well by a wall thereof. The method includes identifying, from the second production well, a location of the hydraulic fracture of the first production well, and perforating the wall of the second production well at the identified location. The perforating creates the fluid communication path between the production wells. Injection of fracking fluid and proppant at the first production well allows for additional fluids to be extracted from the second production well, thus generating a flow between the two production wells through the hydraulic fracture.

Abstract: Systems and methods for cutting objects within a subterranean well include a laser system having a laser drilling head located at a terminal downhole end of a laser tool body directing a head laser beam in a direction downhole. A laser scanner assembly located within the laser tool body has a scanner head directing a scanner laser beam and can move both axially along a length of the laser tool body and rotate around a central axis of the laser tool body. A laser cutter assembly located within the laser tool body has a cutter head directing a cutter laser beam and can rotate around the central axis of the laser tool body. A cable bundle formed of a plurality of fiber optic cables extends from an uphole end of the laser tool body to each of the laser drilling head, the laser scanner assembly, and the laser cutter assembly.

Abstract: A technique facilitates patching of a tubing (42), e.g. casing (36), in a downhole environment (32). The technique employs a patching system comprising a plurality of expansion rings (48). The expansion rings (48) are moved downhole to a patch zone (38) along the tubing (34). Once in a desired position at the patch zone, the expansion rings (48) are expanded into engagement with an inner surface of the tubing. For example, the expansion rings may comprise seal elements (52) and/or anchor elements which are expanded into engagement with the inside surface. The patching system further comprises a patch (68) which may have a tubular shape. The patch is radially expanded in a manner which maintains a sealing engagement with the plurality of expansion rings (48) to create a sealed patch across a desired region in the patch zone.

Abstract: Embodiments of the present disclosure include a system, method, and apparatus comprising a large scale direct steam generator operating on an oxidant of air or enriched air configured to generate steam and combustion exhaust constituents. An exhaust constituent separation system and an energy recovery system to reclaim energy and improve the efficiency of the thermodynamic cycle. An optional CO2 separation system and Non Condensable Gas injection system may be included.

Abstract: A flow management system includes an expandable device configured for attachment to a wall surface of a conduit and being adjustable between an expanded configuration and a collapsed configuration, an electric actuator in fluid communication with the expandable device, and a control module. The control module is configured to control the electric actuator to flow a current to the expandable device to expand the expandable device for compacting a flow blockage within the conduit to create a channel adjacent the flow blockage and to terminate a flow of the current to the expandable device to collapse the expandable device for opening the channel to a fluid flow within the conduit.

Abstract: Determination of Ground Thermal Conductivity (TC) in the field of Geothermal Heat Pumps (GHPs). The invention provides a simple mathematical approach using minimal terms with apparatus not dependent on stable electric power generation.

Abstract: Thermal energy delivery and oil production arrangements and methods thereof are disclosed which heat a subterranean formation, and which comprises positioning concentric tubing strings in a wellbore; heating a heat transfer fluid using a surface thermal fluid heater; flowing a liquid or feedwater downward through an extremely hot innermost tubing string that is inside and concentric to an outermost tubing string and a casing/annulus, which extends below a thermal packer positioned in the wellbore, and continually circulating the heat transfer fluid through the outermost tubing string and the casing/annulus above the thermal packer such that the liquid or feedwater flowing through the innermost tubing string is heated thereby and injected into the wellbore below the thermal packer and out of perforations to heat the subterranean formation to temperatures that allow for hydrocarbon production from the subterranean formation. Emissions may be injected into the subterranean formation with the liquid or feedwater.

Abstract: The object of the invention is to solve the problem of casing and string collapse of production or injection wells, which occurs due to cooling caused by injection of completion fluids into the well, by applying heat to the fluid being injected during operations, such as acid treatments, secondary recovery, scale removal, and inhibiting squeeze. The fluid laser heating equipment was designed to perform the heating of the fluid to be injected into a production or injection well. Before being pumped into the well, the fluid passes through the heating equipment, through a metal coil-shaped tube immersed in hot water, placed inside a tank, a laser system heats the water inside the tank, the water inside the tank exchanges heat with the coil heating the same, and in turn the coil exchanges heat with the fluid passing within it. In this way, the fluid will be at an appropriate temperature for injection into the well.

Abstract: Disclosed herein are various embodiments of systems for drilling and operating a well which may have dual uses. The well may be drilled and operated as a geothermal well using a hybrid approach where a heat transfer fluid is injected into a hot rock formation but is not removed, and heat is extracted using a closed loop method. The geothermal well is then evaluated for use as a carbon dioxide sequestration well. In other embodiments, the well is drilled as a carbon dioxide sequestration well and then evaluated for its potential for generating geothermal energy using a hybrid approach where supercritical carbon dioxide is injected into a hot rock formation but is not removed, and heat is extracted using a closed loop method. Both horizontal and vertical wells are disclosed, in sedimentary rocks and in basement granite.

Abstract: A power system adapted for supplying power in a high temperature environment is disclosed. The power system includes a rechargeable energy storage that is operable in a temperature range of between about seventy degrees Celsius and about two hundred and fifty degrees Celsius coupled to a circuit for at least one of supplying power from the energy storage and charging the energy storage; wherein the energy storage is configured to store between about one one hundredth (0.01) of a joule and about one hundred megajoules of energy, and to provide peak power of between about one one hundredth (0.01) of a watt and about one hundred megawatts, for at least two charge-discharge cycles. Methods of use and fabrication are provided. Embodiments of additional features of the power supply are included.

Abstract: Systems and a method are provided for protecting a gas lift valve (GLV) from erosion. An example system includes a gas lift valve that includes an unloading protection orifice, and wherein the unloading protection orifice unloading protection orifice includes a different open area than a valve seat in the gas lift valve.

Abstract: A spherical organic nano boron crosslinker with a PAMAM core and a preparation method thereof, and a gel fracturing fluid.

Abstract: The present invention relates to a downhole line separation tool for submerging into a casing in a wellbore, the downhole line separation tool having a first tool end, a second tool end and a tool axis, comprising a tool housing having a first housing part and a second housing part, an electrical motor arranged within the first housing part and powered through a wireline connected to the first tool end, an annular separation element having an element end facing away from the first tool end and being rotatably connected within the second housing part, and a rotatable shaft arranged within the second housing part and rotated by the electrical motor for rotating the annular separation element, wherein the second housing part comprises a sleeve part having a sleeve end, at least part of the annular separation element projecting from the sleeve end further away from the first tool end than the sleeve, the second housing part comprising at least one projecting part extending further away from the first tool end tha