837results about "Insulation" patented technology

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.

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 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.

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.

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).

Methods and systems are provided for drilling a wellbore in a subterranean formation. The methods and systems circulate drilling fluid into and through the wellbore during the drilling, and circulate drilling fluid that exits the wellbore during the drilling into and through at least one secondary wellbore that employs geothermal cooling to cool the drilling fluid during the drilling.

The invention provides a cement consolidation casing pipe separation process, and relates to the technical field of petroleum engineering well repair, the process comprises the following steps: S1, ground equipment installation, pipeline connection and pressure test; s2, plugging a central through hole of the casing below the target depth, and performing a pressurizing test; s3, the inner wall of the casing pipe is cleaned, the well is washed circularly, gas lift drainage and drying are conducted, and inert gas is injected for well sealing; s4, detecting the contents of combustible gas, oxygen and inert gas in the well; s5, a high-frequency induction heating device is put down to the target depth, and the high-frequency induction heating device is moved from bottom to top to conduct induction heating on the sleeve; s6, a section milling tool is put down to conduct section milling on the casing pipe at the target depth, and the well is washed circularly; and S7, a fishing tool is put down, and the upper casing pipe is lifted out. The device can effectively destroy the binding force between the casing and set cement outside the casing, then the casing can be taken out in sections, and the device has the advantages of being high in efficiency, short in operation period, low in cost, small in environmental pollution and the like.

The invention discloses a seabed shallow casing section thermal insulation structure for polar region supercritical carbon dioxide drilling, which comprises a casing, a thermal insulation coating, a protective coating, an annular cement slurry layer, an electric heating pipe, a sensor module, a wireless conductive module, a ground system and a seabed wireless transmission module, and is characterized in that the electric heating pipe is fixed on the outer wall of the casing through a hoop; the outer wall of the casing pipe is sequentially coated with a heat preservation coating, a protective coating and an annular cement paste layer from inside to outside, the wireless conductive module is integrated at the end of the casing pipe, and the ground system comprises a ground data acquisition system and a ground control center. The sea surface platform is provided with a ground data acquisition system and a ground control center which are connected with the seabed wireless transmission module through an umbilical cable, and temperature and pressure data acquired by the sensor module are uploaded to the ground control center. According to the invention, the problems of rapid heat loss, annular air channeling, casing mechanical property degradation, poor drilling fluid fluidity and the like of the seabed shallow casing section in the polar region extreme low-temperature environment are solved.

The invention discloses self-adaptive variable-diameter drilling equipment for a high and cold frozen soil region and a stable-temperature construction method, and relates to the technical field of constructional engineering construction equipment, in particular to the self-adaptive variable-diameter drilling equipment for the high and cold frozen soil region, the self-adaptive variable-diameter drilling equipment comprises a main body, and the top of the main body is fixedly connected with a drilling assembly; a multi-blade structure is utilized, each blade is provided with an independent electric heating wire, the electric heating wires can preheat the blades in the drilling process, the blades are prevented from being embrittled due to low temperature, the service life of the drill bit is prolonged, the multiple telescopic auxiliary rotary drill bits are evenly distributed around the main drill bit, and the drilling efficiency is improved. The telescopic rod controls the auxiliary rotary drill bit to automatically adjust the telescopic length of the auxiliary rotary drill bit according to the hardness of the frozen soil layer and the drilling depth, so that the total diameter of the drill bit is changed to meet the drilling requirements of different diameters.

The invention discloses a grouting reinforcement roadway surrounding rock water-cooling coring and drilling device, which relates to the technical field of coring and drilling, and comprises an outer pipe assembly, an inner pipe assembly, a drill bit assembly and a fishing assembly, a cooling cavity is defined between the outer coring cylinder and the inner coring cylinder, the cooling cavity is connected with a water supply system, and the water supply system supplies cooling liquid into the cooling cavity; the drill bit assembly comprises a drill bit body fixed to the bottom of the outer coring cylinder, and drill edges are evenly arranged on the outer side of the bottom of the drill bit body. A drill cavity communicated with the cooling cavity is formed in the drill bit body, and a coring hole is formed in the middle of the bottom of the drill bit body. And cooling holes are formed in the bottom of the drill cavity around the circumferential direction of the coring hole. A cooling hole and a coring hole are separated on the coring drill bit, so that the spraying area of cooling liquid is reduced, the flow speed of the cooling liquid is reduced, the cooling liquid is fully utilized, and the energy consumption is reduced; meanwhile, the impact of the cooling liquid on the rock core is avoided, the problem that the rock core is scattered is avoided, and a large amount of cooling liquid is prevented from entering the inner coring barrel to damage the rock core.

The invention provides an underground electric heating steam generator and a steam generation system, and belongs to the field of oil and gas field exploitation. The underground electric heating steam generator comprises an underground steam generating mechanism, the underground steam generating mechanism comprises an outer protective pipe and a plurality of heating pipes, the heating pipes are arranged in the outer protective pipe, and a first cavity is formed between the inner wall of the outer protective pipe and the outer walls of the heating pipes; the heating pipe comprises a heating body, and the heating body comprises a wire section and a heating section which are integrally formed; the underground electric heating steam generating system comprises an underground electric heating steam generator, a power adjusting device, a parameter collecting device, a hydroelectric sealing device, a water purifying device and a high-pressure bearing sealing wellhead. Steam is obtained underground, the problem of heat loss caused by ground steam conveying is solved, and the dryness of the steam is guaranteed; steam is obtained by electrically heating the heating body, and the technical problem that a large amount of carbon dioxide is generated due to the fact that a coal-fired boiler obtains steam is solved.

The invention relates to the field of oil extraction, in particular to a cable dropping and fishing electric heating system, and aims to solve the technical problems of high cost and influence on oil extraction aging of a thermal well washing technology. The dropping-fishing cable electric heating system comprises an oil pipe, a dropping-fishing cable, a wellhead device and a frequency conversion control cabinet, one end of the oil pipe is connected with the wellhead device; a steel wire layer of the throwing-fishing cable in the oil pipe is electrically connected with the oil pipe through an underground contactor; one end, penetrating out of the oil pipe, of the throwing-fishing cable is electrically connected with the frequency conversion control cabinet; and the frequency conversion control cabinet is also electrically connected with the wellhead device. The dropping and fishing cable electric heating system can replace hot well washing, water injection and drainage are not needed, wax is removed through electrifying and heating of the steel wire layer, and the oil extraction aging is guaranteed.

The invention discloses an electric heating and heat preservation system and method for a deep-sea gas production seabed wellhead flow channel cold point, which are used for solving the problems of natural gas hydrate generation and paraffin precipitation blockage caused by low temperature and throttling of a deep-sea gas production underwater wellhead and an underwater gas production tree flow channel and ensuring efficient and stable operation of deep-sea gas production operation. An electric heating and heat preservation system for a deep sea gas production seabed wellhead flow channel cold point comprises a cold point positioning system, an electric heating device and a control system. The cold spot positioning system performs real-time data acquisition and preprocessing by constructing a temperature sensor network for key cold spots of an underwater christmas tree runner, quantifies the positions and risk levels of the cold spots in combination with a probability statistical model, and provides an accurate targeted heating basis for the distribution positions of electric heating devices. A heating element of the electric heating device is arranged in a cold point area of an underwater christmas tree flow channel; the control system obtains data measured by the temperature sensors in the cold spot areas in real time, and whether the corresponding heating elements are started or not is determined according to the data.

A cable structure for use in a wellbore formed in a subsurface formation. The cable structure comprises superconducting material configured to provide power to a downhole tool in the wellbore. The cable structure comprises a cryogenic liquid supply channel configured to supply fluid to reduce temperature of the superconducting material. The cable structure comprises one or more cryogenic liquid return channels.