1221results about "Insulation" patented technology

The present disclosure describes a system and a method for generating energy from geothermal sources. The system includes an insulated injection pipe and a common well segment, an injection well and a production well, a first lateral section connected to the injection well and a second lateral section connected to the production well, a multilateral connector joining the first and second lateral sections, the insulated injection pipe coinciding with the common well segment, defining a pressure-tested loop within the rock formation and in a heat transfer arrangement therewith. The loop cased in steel and cemented in place. The loop to receive working fluid capable of undergoing phase change within the downhole well loop as a result of heat transferred from the rock formation. The system also includes a pump to circulate working fluid, a turbine system to convert the flow of working fluid into electricity, and a cooler.

Systems and methods are disclosed for mining lunar and Martian polar permafrost to extract gas propellants. The method can comprise identifying a plurality of near-polar landing sites in craters in which the surface comprises permafrost in perpetual darkness, wherein such landing sites have perpetual sunlight available at altitudes of about 100 to 200 m. A mining outpost can be established in at least one of the sites and a high altitude solar array deployed at the landing site using a lightweight mast tall enough to generate near continuous power for the outpost. Systems and apparatus are disclosed for mining the permafrost at the landing sites using radiant gas dynamic mining procedures. The systems can comprise a rover vehicle with an integrated large area dome for cryotrapping gases released from the surface and multi-wavelength radiant heating systems to provide adjustable heating as a function of depth.

Systems and methods for generating electrical power in an organic Rankine cycle (ORC) operation include one or more heat exchangers incorporated into mobile heat generation units, and which will receive a heated fluid flow from one or more heat sources, and transfer heat therefrom to a working fluid that is circulated through an ORC unit for generation of power. In embodiments, the mobile heat generation units comprise pre-packaged modules with one or more heat exchangers connected to a pump of a recirculation system, including an array of piping, such that each mobile heat generation unit can be transported to the site and installed as a substantially stand-alone module or heat generation assembly.

A method of sealing a casing comprising the steps of deploying a thin wall tube in the region the casing is to be sealed, melting a low temperature alloy and allowing it to flow into the annulus between the thin wall tube and the casing, and allowing the low temperature alloy to solidify. The thin wall tube may include protrusions on its outer surface, of similar height so as to centralise the thin wall tube in the casing.

Described is a drilling fluid composition with enhanced hole cleaning properties and a method of its use. Following an indication of sticking of a drill pipe during a drilling operation, a drilling fluid composition, including a first exothermic reactant, is injected into a subterranean formation. Then, a drilling fluid composition, including a second exothermic reactant, is injected into the subterranean formation. An exothermic reaction is allowed to occur between the first exothermic reactant and the second exothermic reactant within the subterranean formation.

Downhole tools, systems, and methods for electric-based fracturing are disclosed. A downhole tool for electric-based fracturing may include an outer enclosure, an insulator chamber disposed at least partially within the enclosure, and an electrode disposed at least partially within the insulator chamber. The electrode may extend out from the insulator chamber and the enclosure, and may be configured to transfer electric energy to an exterior environment surrounding the downhole tool. The insulator chamber may be configured to thermally and electrically insulate at least a portion of the electrode from the exterior environment.

The anti-freezing and anti-blocking heat-preservation pigging and watering combined wellhead device comprises an oil inlet pipe, the top of the oil inlet pipe penetrates through a placing base and is connected with the lower end of the middle of a U-shaped pipe, the two ends of the U-shaped pipe are connected with the two sides of the lower end of a quantitative box, and a liquid drainage pipe is installed in the middle of the rear side of the quantitative box; a watering mechanism and an electric control device are installed at the upper end of the placing base and located on the two sides of the protection box correspondingly, the watering mechanism is connected with an oil inlet pipe, and meanwhile a cleaning mechanism is arranged in the oil inlet pipe. According to the anti-freezing and anti-blocking heat-preservation pigging and watering combined wellhead device, the first driving motor drives the rotating shaft, the threaded barrel and the scraper to rotate, the scraper scrapes the interior of the oil inlet pipe, thick oil in the oil inlet pipe is fully mixed and diluted with hot water, and the later oil extraction efficiency is improved; the diluted oil is filtered through the filter plate, impurities are prevented from entering the pipeline to cause blockage, the filter plate is cleaned through the cleaning brush, filter holes are prevented from being blocked, and the use practicability is improved.

The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a low-yield well distributed optical fiber sound wave wellbore flow interpretation system and method based on thermal excitation. Downhole fluid is heated through a downhole heating device, and a thermal fluid slug with the temperature higher than that of unheated fluid is formed; the moving distance of the thermal fluid slug in the shaft in unit time is tracked by drawing an optical fiber strain response diagram, and the downhole fluid flow speed can be obtained. The shaft flow interpretation method is small in underground flow interference and obvious in optical fiber signal response, the technology is simple and easy to implement, and the problem that signals of the DAS in a low-yield well are not obvious can be effectively solved.

A control system for controlling extraction of landfill gas from a landfill via a gas extraction system comprising well piping, the landfill gas having a first temperature when extracted, the control system comprising: a gas composition chamber coupled to the well piping and comprising at least one sensor configured to measure one or more characteristics of a landfill gas sample in the gas composition chamber; a temperature control mechanism configured to heat the landfill gas sample in the gas composition chamber to a second temperature at least a threshold amount greater than the first temperature; and a controller configured to control the at least one sensor to measure the one or more characteristics of the landfill gas sample in the gas composition chamber when a temperature of the landfill gas sample in the gas composition chamber is at least the threshold amount greater than the first temperature.

A system for geothermal heating, the system comprising a forced geothermal circuit disposed in a well bore. The system also comprise a well bore heat exchanger and an pump. The system may further comprise a circulation fluid and flux co-inverter. A method for geothermal heating, the method comprising passing a fluid into a thermal circulation system; passing the fluid into a well bore heat exchanger; passing reservoir fluid into an annulus space; and passing the reservoir fluid through a sub-surface formation.

The invention discloses a concentric tube geothermal well structure capable of improving heat exchange efficiency. The concentric tube geothermal well structure comprises a first well opening section and a second well opening section. The first well opening section comprises a first casing pipe, and first well cementation cement is arranged between the inner wall of the first well opening section and the first casing pipe; the second well opening section is provided with a second casing pipe, second well cementation cement and a central casing pipe; a distance is arranged between the second casing pipe and the well wall of the second well opening section, second well cementation cement is arranged between the center casing pipe and the second casing pipe, a water stopping device is arranged at the upper end of the second well cementation cement and is of a reducing structure with the diameter sequentially increased from top to bottom, and the inner wall of the top end of the water stopping device is connected with the center casing pipe. The bottom end of the water stop device is connected with the second sleeve; a packing structure is arranged at the bottom end of the second well cementation cement, and a permeable section is arranged at the lower end of the packing structure. The invention further provides a construction method of the geothermal well structure. The structure is reliable, the heat exchange efficiency is improved, and the industrial long-term operation requirement is met.

The invention relates to the technical field of oil exploitation, in particular to a carbon dioxide drive shaft cold damage prevention device and a using method. According to the technical scheme, an oil pipe and a small-diameter oil pipe are connected with an anti-blocking jet flow drainage and production pump, the anti-blocking jet flow drainage and production pump is installed in the middle of an oil well, the lower end of the anti-blocking jet flow drainage and production pump is connected with an underground gas-liquid separator through the oil pipe, and the lower portion of the underground gas-liquid separator is connected with a fin type heat exchanger. The lower portion of the fin type heat exchanger is connected with a depressurization and degassing heat exchanger, and the depressurization and degassing heat exchanger is located below the oil layer. The device has the advantages that the cooling problem in an oil extraction production shaft caused by heat absorption in the carbon dioxide gasification process can be solved, the situation that a liquid flow channel is blocked due to wax precipitation and freezing of crude oil caused by cooling is avoided, and the corrosion problem of carbon dioxide to a pipe column can be greatly solved due to doping of power liquid; in addition, the anti-well-flushing wax dissolving and plug removal can be achieved, re-operation is avoided, and the operation cost is reduced.

The invention provides a method for exploiting a heavy oil reservoir. The heavy oil reservoir exploitation method comprises the steps that the heavy oil reservoir meeting exploitation conditions is determined; measuring fracture pressure of an oil layer; the horizontal well is drilled, the horizontal section of the horizontal well is completed through a screen pipe, a short pipe and a long pipe are put into the horizontal well, the length of the short pipe is smaller than that of the long pipe, the tail end of the short pipe is connected with oil extraction equipment, a continuous pipe is put into the long pipe, and a heating piece is arranged in the continuous pipe; a production process and production parameters are determined; cleaning and preheating the shaft; a solvent plunger and a steam plunger are sequentially injected from a long pipe annulus, a heating piece is opened, and oil extraction equipment is started for production after soaking; and after a plurality of cycles of solvent-steam slug alternate huff and puff cavity expansion, a solvent and steam are injected from the annulus of the long pipe at the same time, and the heating piece is kept to heat the solvent and the steam, so that the solvent and the steam enter an oil layer, and crude oil is driven to enter a shaft and be extracted to the ground from the short pipe. The problem that the heavy oil reservoir cannot be effectively developed in the prior art is solved.

Systems and methods of the present disclosure includes a mixer configured to mix air and hydrocarbons and a burner configured to receive the mixed air and hydrocarbons and to generate syngas. The system also includes a cooling system configured to receive the syngas and to cool the syngas to form cooled syngas. The system further includes a collector configured to collect carbon from the cooled syngas as soot. Moreover, the system includes a flare stack configured to receive the cooled syngas and to burn off at least part of the cooled syngas.

An apparatus for sampling landfill gas from a landfill flowing through a pipe. The apparatus may comprise: an enclosure configured to receive a section of the pipe; a gas sampling port in the section of the pipe; at least one sensor device disposed in a region of the enclosure, the at least one sensor being coupled to the section of the pipe through the gas sampling port; and thermal insulation positioned to retain heat from the section of the pipe in the region of the enclosure. A method of operating a landfill gas recovery system. The method may comprise: flowing gas from a well riser pipe through a sampling subsystem to a collection system; and heating a portion of the sampling subsystem with the gas flowing from the well riser pipe to the collection system.

The invention discloses a heat supply system for mine building heat supply and shaft freezing prevention, comprising: a heat collection module for collecting heat by using solar energy; the heat storage module exchanges heat with the heat collection module, is used for storing the heat source transferred by the heat collection module and can transfer the heat source to a heat terminal for the mining area building for heating around the clock; the power supply module is used for generating power by using solar energy and storing electric energy; and the wellhead heating modules are arranged at the shaft positions of the main inclined shaft and the auxiliary inclined shaft, and heat exchange is conducted between the wellhead heating modules and the heat storage module. The water source heat pump is used for heating the main inclined shaft and the auxiliary inclined shaft, comprehensive utilization of energy is achieved, a photovoltaic renewable power source is built in combination with the mining area space to provide clean power for mining area heat supply and power utilization systems such as the water source heat pump, and when the mining area power load and the heating load are low in the non-heating season, the water source heat pump can be used for heating the heat storage system. Zero-carbon heat supply for mine area building heat supply and shaft freezing prevention is achieved.

An apparatus for sampling landfill gas from a landfill flowing through a pipe. The apparatus may comprise: an enclosure configured to receive a section of the pipe; a gas sampling port in the section of the pipe; at least one sensor device disposed in a region of the enclosure, the at least one sensor being coupled to the section of the pipe through the gas sampling port; and thermal insulation positioned to retain heat from the section of the pipe in the region of the enclosure. A method of operating a landfill gas recovery system. The method may comprise: flowing gas from a well riser pipe through a sampling subsystem to a collection system; and heating a portion of the sampling subsystem with the gas flowing from the well riser pipe to the collection system.

The invention provides a stratum gap plugging method, device and equipment, a storage medium and a product, and the method comprises the steps: determining a gap region in response to detection of a gap in a stratum; calculating the adding mass of the plugging substance; the plugging substance is a substance capable of flexibly expanding along with temperature rise; the initial expansion temperature of the plugging material is greater than or equal to the highest temperature of the shaft; the shaft bears drilling fluid, and the plugging substance with the added mass is uniformly distributed in the drilling fluid; and the temperature of the gap area is controlled to rise, so that the plugging substance with the added mass is subjected to flexible expansion to plug the stratum gap. The plugging substance is a flexible plugging substance, and after the temperature rises, the plugging substance expands in the stratum gap, so that the plugging substance can be better filled in the stratum gap, and the plugging effect can be improved.

A control system for controlling extraction of landfill gas from a landfill via a gas extraction system comprising well piping, the landfill gas having a first temperature when extracted, the control system comprising: a gas composition chamber coupled to the well piping and comprising at least one sensor configured to measure one or more characteristics of a landfill gas sample in the gas composition chamber; a temperature control mechanism configured to heat the landfill gas sample in the gas composition chamber to a second temperature at least a threshold amount greater than the first temperature; and a controller configured to control the at least one sensor to measure the one or more characteristics of the landfill gas sample in the gas composition chamber when a temperature of the landfill gas sample in the gas composition chamber is at least the threshold amount greater than the first temperature.

The utility model discloses an anti-freezing device for a wellhead of a water injection well, which comprises an igniter arranged in a preset area of the wellhead of the water injection well, connected with an external power supply and used for heating water by burning associated gas. The heat tracing assembly is arranged on the pipe wall of the wellhead of the water injection well, connected with the igniter through a pipeline and semi-wraps the pipe walls of a sleeve and an oil pipe of the wellhead of the water injection well, the igniter is used for supplying hot water to the heat tracing assembly after the natural gas is introduced, and the heat tracing assembly is used for heating the sleeve and the oil pipe. And the heat preservation assembly is arranged on the heat tracing assembly, wraps the heat tracing assembly, the sleeve and the oil pipe and is used for transferring heat of the heat tracing assembly to the sleeve and the oil pipe. The heat preservation assembly and the heat tracing assembly can be repeatedly used, materials are saved, the overhaul time and workload are reduced, hot water is provided for the heat tracing assembly through the igniter, the hot water continues to enter the igniter to be combusted again after being cooled, continuous supply of the hot water is ensured, and the situation of heat tracing disconnection is avoided.

Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.

The invention provides a porous material for heat insulation of a drilling shaft and a preparation method and application thereof, and belongs to the technical field of oilfield chemistry. The preparation method of the porous material comprises the following steps: fully and uniformly mixing ceramsite powder and a pore-forming agent; the colloidal solution is used as a binder, and porous ceramsite is obtained through granulation and heat treatment; the preparation method comprises the following steps: fully dispersing porous ceramsite, an anionic monomer and a cationic monomer in deionized water, adding an initiator, reacting, washing, and drying. The porous material adopts natural ores and industrial wastes as raw materials, and the raw materials are cheap, easy to obtain, low in cost, green and environment-friendly. The porous material is applied to shaft heat insulation and can prevent ceramsite from being screened out by a solid-liquid separation device, and repeated recycling is facilitated; a large number of micron-scale and nano-scale pores are formed in the porous material, the heat conductivity coefficient is low, and the heat insulation effect is good; the surface of the porous material contains abundant anion and cation groups, and the porous material can be adsorbed on the shaft wall for effective and stable heat insulation.

Provided is a method for setting a downhole tool, and a downhole localized heater. The method, in at least one aspect, includes positioning a downhole tool within a wellbore, the downhole tool including expandable metal configured to expand in response to hydrolysis, and positioning a downhole localized heater within the wellbore, the downhole localized heater being proximate the expandable metal. The method additionally includes subjecting the expandable metal to a wellbore fluid to expand the expandable metal into contact with one or more surfaces while activating the downhole localized heater to create a temperature spike and accelerate an expansion of the expandable metal.

The utility model discloses a millimeter wave deep well drilling platform, which belongs to the technical field of drilling equipment and comprises a drilling machine, a drilling rod and a gyrotron, the drilling machine and the gyrotron are arranged above the ground surface, one end of the drilling rod is connected with a drilling winch on the drilling machine, and the other end of the drilling rod extends into the ground from a drilling well. The drill rod comprises a drill rod shell and a waveguide tube in the drill rod shell, one end of the waveguide tube is communicated with the waveguide collector, the other end of the waveguide tube is provided with an opening and extends into the ground along with a drill bit of the drill rod, and the gyrotron is provided with a dynamic waveguide and movably connected with the waveguide collector through the dynamic waveguide. The dynamic waveguide comprises a waveguide leading-in pipe, a tail pipe and a plurality of groups of waveguide transmission pipes which are connected in sequence, and a plurality of millimeter wave reflection devices are arranged in the dynamic waveguide. Millimeter wave drilling is utilized, the problems of drill bit abrasion, replacement and the like in traditional drilling are solved through millimeter wave drill bit drilling, and the drilling cost is reduced.

In some implementations, a plurality of thermoelectric devices may be arranged to cool one or more components of a downhole drilling component during drilling operations. A current can be applied to one or more thermoelectric devices to generate a cooling effect. The thermoelectric devices can be located and arranged so that they cool some or all of a bottom hole assembly or components thereof, such as one or more sensors, batteries, processors, electrics, and the like. The thermoelectric devices also may be located and arranged to cool sensors, batteries, other downhole components, and / or drilling mud in a wellbore during drilling operations. A plurality of thermoelectric devices may be used to generate electric power downhole from a temperature difference. The electric power may be used to power sensors, processors, charge batteries, and be used by one or more downhole electric components, such as those in a bottom hold assembly. One or more thermal storage devices may be used with the thermoelectric devices to store thermal energy for use when needed. A control system may be used to control the activation and / or deactivation of one or more thermoelectric devices to provide cooling when desired.

A heater cable is disposed through a wellhead assembly into a production tubing string and is lowered such that it is at least partially immersed within a volume of a well kill fluid. Prior to the immersion, a density of the well kill fluid relative to the produced fluids at the downhole end is such that the volume of well kill fluid prevents the flow of the produced fluids from the subterranean zone into the production tubing string. An electric current is flowed though the heater cable, and the heater cable converts the electric current to heat energy. The heat energy is transferred by conduction to the kill fluid thereby reducing the density of the well kill fluid relative to the produced fluids such that the well kill fluid rises in an uphole direction through the production tubing string.

The invention provides an SAGD underground heater intelligent energy supply system based on multi-energy complementation, and belongs to the technical field of thickened oil recovery, and the SAGD underground heater intelligent energy supply system comprises a new energy power generation module which is used for generating power by using solar energy and / or wind energy; the energy storage module is used for storing electric energy when the new energy power generation module generates excessive power and releasing the electric energy to the underground heater module when the new energy power generation module generates insufficient power; and the intelligent control module is used for regulating and controlling the new energy power generation module, the energy storage module and the underground heater module according to the power generation data of the new energy power generation module, the energy storage state data of the energy storage module and the operating parameters of the underground heater module which are acquired in real time. The system has the advantages that new energy power generation and energy storage are organically combined, and smooth output and efficient utilization of energy are achieved; system operation data are monitored and analyzed in real time, an energy distribution strategy and operation parameters of an underground electric heater are dynamically adjusted, accurate heating is achieved, the energy utilization efficiency is improved, and energy consumption and carbon emission are reduced.

A carbon dioxide injection manager may pump carbon dioxide into a wellbore with a carbon dioxide pump. A carbon dioxide injection manager may measure a carbon dioxide temperature of the carbon dioxide at the wellbore. A carbon dioxide injection manager may, based on the carbon dioxide temperature, increase a temperature of the carbon dioxide between the carbon dioxide pump and the wellbore.

Methods for the in-situ production of one or more chemical products in a subterranean well include the steps of admitting natural gas into the well from the surrounding subterranean formation, directing the natural gas into a downhole reactor in the well, reacting the natural gas within the downhole reactor to produce an intermediate product stream that includes the one or more chemical products, and withdrawing the intermediate product stream and the one or more chemical products from the downhole reactor. The methods can be earned out in a downhole reactor (22) that includes a reaction chamber (26) inside tubing (20) and an inlet valve (24) adapted to control the introduction of natural gas into the reaction chamber (26).

The invention belongs to the technical field of oil and gas field development, and discloses a temperature distribution calculation method, system, equipment and medium for reservoir in-situ electric heating, and the method comprises the following steps: constructing a physical stratum model of a near wellbore zone stratum; based on the physical stratum model, constructing a mathematical physical equation of heat conduction and heat convection phenomena in the stratum by combining the law of conservation of energy; calculating oil phase flow velocity data of an oil phase in the physical stratum model; calculating internal heat source intensity distribution data generated by in-situ electric heating in the physical stratum model; and substituting the oil phase flow velocity data and the internal heat source intensity distribution data into the mathematical physical equation, and obtaining the temperature distribution data of the stratum through integral solution. According to the technical scheme, the precision and reliability of temperature distribution calculation can be improved.