248results about "Insulation" patented technology

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 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.

Systems and methods disclosed herein may comprise a bottom hole assembly; and a cable disposed in the wellbore. In examples, the cable may comprise a superconducting material configured to provide at least power to the bottom hole assembly; one or more liquid supply channels configured to supply a fluid to reduce temperature of the superconducting material; and one or more liquid return channels. Further, cryogenic liquid may be pumped through the liquid supply channels.

Igniter assemblies for use with setting tools are disclosed. The igniter assemblies have an electronic heating element disposed adjacent to an energetic material within a setting tool. In some embodiments, the electronic heating element is a resistor or a PCB mounted resistor. Electrical connections are attached to the heating element to provide electrical current to activate the heating element. In some instances, the electrical heating element is disposed onto an insulator cap that is coupled to a pressure block attached to the setting tool, and in some instances the electronic heating element is attached to a non-explosive portion and the energetic material is disposed within an explosive portion. When the non-explosive portion and the explosive portion are assembled, the electronic heating element is adjacent to the energetic material. Other assemblies are described.

A system and method are provided for installing a well for a borehole heat exchanger. The method includes drilling a hole formation to a predetermined depth relative to a ground surface, including operating a bottomhole assembly (BHA) including a drill bit supported at a bottom end of a cable positioned within a flexible tube. After drilling the hole formation to a predetermined depth, the BHA is retracted through the flexible tube to remove the BHA from the hole formation while the flexible tube remains in the hole formation.

The invention relates to a process for removing an obstruction (13) caused by gas hydrates or water ice from the tubing (12) of a hydrocarbon production or injection well or a riser. The process comprises passing a microwave generating and emitting tool (5) on wireline (8) down the tubing (12) and supplying electrical power to the tool via the wireline (8) or from a battery to produce microwave energy and direct it to the gas hydrate and / or water ice deposit (13), thereby melting deposit and unblocking the well.

A system for recovering ammonia from an endothermic reaction in a subsurface formation may comprise a subsurface formation; a wellbore fluidly connected to the subsurface formation; a tubing string positioned within the wellbore, wherein the wellbore and an exterior of the tubing string together define a wellbore annulus; a wellhead comprising one or more injection lines and one or more return lines fluidly connected to the wellbore; one or more fluid injection pumps configured to supply an endothermic fluid composition to the subsurface formation through the one or more injection lines and the tubing string, the endothermic fluid composition operable to form ammonia when reacted; and one or more ammonia retention vessels fluidly connected to the return lines for receiving the ammonia through the wellbore annulus.

A wellbore is drilled in a subterranean zone with a drill bit of a drilling string. The drilling string includes tubing and a fluid separator uphole of the drill bit. While drilling, a drilling fluid is flowed through an interior of the drilling string and through the fluid separator. The fluid separator separates, from the drilling fluid, a fluid stream having a higher water-to-oil ratio than a remainder of the drilling fluid Uphole of the drill bit, the fluid stream is diverted from the fluid separator to an annulus around the exterior of the drilling string based on a specified temperature of a drilling string component while the remainder of the drilling fluid flows from the fluid separator to the drill bit.

The utility model relates to the field of gas field production, in particular to a heatable throttle valve for a gas well, which comprises a throttle valve respectively communicated with an inlet pipeline and an outlet pipeline. The electromagnetic induction coil is arranged on the periphery of the throttling valve; the controller is in communication connection with the electromagnetic induction coil, and the controller can control the electromagnetic induction coil to be opened or closed. The throttling valve is directly heated through the electromagnetic induction coil, the heating efficiency is high, it can be ensured that the throttling valve is not blocked by ice in high-pressure gas well large-pressure-difference pressure reduction throttling or low-temperature weather in winter, and the normal use requirement is met.

The invention discloses a magnetothermal refrigeration system and method for an underground while-drilling circuit, and relates to the technical field of thermal management of the underground while-drilling circuit, the system comprises a magnetothermal working medium module, a magnetic field generation and modulation module and a closed heat transfer fluid loop, and the closed heat transfer fluid loop is in thermal contact connection with the underground while-drilling circuit and the magnetothermal working medium module; the interior of the magnetocaloric working medium module is filled with a magnetocaloric material; the magnetic field generation and modulation module is used for applying a periodically changing magnetic field to the magnetocaloric working medium module, so that a magnetocaloric material in the magnetocaloric working medium module is periodically magnetized and demagnetized; the closed heat transfer fluid loop is used for completing heat transfer and transfer of an underground while-drilling circuit and the magnetic heat working medium module. By constructing the magnetothermal working medium module, the magnetic field generation and modulation module and the closed heat transfer fluid loop, the advantages that the magnetothermal effect theory is high in efficiency and free of spontaneous heating accumulation are utilized, and the long-term effectiveness and accuracy of underground while-drilling circuit heat management are improved.

The invention discloses a wellhead throttling anti-freezing and anti-blocking device and method for a carbon dioxide flooding well, and relates to the technical field of carbon dioxide flooding wells. Wherein the oil nozzle comprises a first-stage oil nozzle and a second-stage oil nozzle arranged at the upper part in the heating box which are connected; the inlet end of the primary oil nozzle is connected with an outlet oil nozzle sleeve of the Christmas tree; the outlet end of the primary oil nozzle is connected with the inlet end of the secondary oil nozzle; the outlet end of the secondary oil nozzle is connected with the inlet end of the coil in the heating box; the outlet end of the coil penetrates out of the heating box and is connected with a gathering pipe communicated with the lower side of an oil outlet pipe of the Christmas tree. The method is a production management method which can adapt to the production change rule of the carbon dioxide flooding well on the premise that the conventional carbon dioxide flooding well mouth process and the electric power facility design are not rebuilt and expanded, and is economical.

The utility model discloses a wellhead high-temperature fluid cooling device which comprises a shell. The first partition plates are arranged in the shell in parallel at intervals, and the upper ends and the lower ends of the first partition plates are fixedly connected to the top plate and the bottom plate of the shell correspondingly; the second partition plates are arranged in the shell in parallel at intervals, and the second partition plates and the first partition plates are arranged in a crossed mode; the upper end of the second partition plate is fixedly connected to the top plate of the shell, and a gap is formed between the lower end and the bottom plate of the shell; the plurality of third partition plates are arranged in the shell, are parallel to the second partition plates and are arranged at intervals; the lower end of the third partition plate is fixedly connected to the bottom plate of the shell, and a gap is formed between the upper end and the top plate of the shell; the petroleum flowing pipeline comprises multiple layers of pipeline units which are arranged at intervals in the height direction of the shell, and the pipeline units are reciprocating bending pipelines parallel to a bottom plate of the shell; the cooling water pipe is used for introducing cooling water into the shell; and the cooling water outflow pipe is used for discharging the cooling water after heat exchange in the shell.

The application discloses a "three plugging and one injection" low-temperature epoxy propane efficient gasification fracturing permeability improvement device and method, which comprises five functions of efficient hole sealing, hole cleaning and dust blocking, efficient heating, automatic control and safety and reliability. The device adopts a "three plugging and one injection + slip" technology to block the new fractures around the drilling hole, so that the artificial induced coal seam gas directional flow is realized. The coal seam is fractured by the high-pressure and low-temperature gas generated by the epoxy propane. The coal seam is fractured by the way that the low-temperature epoxy propane is injected into the fractured hole to make the low-temperature epoxy propane gasify. After the high-pressure gas enters the coal body, the high-pressure gas is uniformly distributed in the coal seam, the internal fractures of the coal body are promoted to develop, expand and penetrate, and the permeability of the coal seam is uniformly increased, so that the purpose of efficient fracturing and permeability improvement is realized, and the problem of significant disasters caused by gas over-limit is solved.

A system and method are provided for installing a well for a borehole heat exchanger. The method includes drilling a hole formation to a predetermined depth relative to a ground surface, including operating a bottomhole assembly (BHA) including a drill bit (108) supported at a bottom end of a cable (118) positioned within a flexible tube (104). After drilling the hole formation to a predetermined depth, the BHA is retracted through the flexible tube to remove the BHA from the hole formation while the flexible tube remains in the hole formation.

The invention discloses offshore exploratory well testing and draining equipment and a metering method, and the offshore exploratory well testing and draining equipment comprises a liquid supply device, an underground device and a separation metering device, and further comprises a temperature difference energy thermal circulation device. The temperature difference energy heat cycle device comprises a steam generation assembly, a power generation assembly and a heating assembly; the steam generation assembly is used for generating steam by utilizing temperature difference energy of surface seawater and deep seawater; the power generation assembly is used for generating power through steam and supplying power to the heating assembly. The heating assembly is used for heating working fluid supplied into the downhole device. The working liquid heated to the preset temperature is supplied into the underground device and mixed with the produced liquid, the temperature of the mixed liquid of the produced liquid and the working liquid is increased, the viscosity of the mixed liquid is reduced, the mixed liquid is smoothly discharged to the separation metering device through the liquid outlet, and the problems that the temperature difference of an offshore exploratory well is large, the produced liquid is attached to the inner wall of a shaft due to low temperature, and productivity evaluation is affected are solved.

Drilling in a wellbore in a subterranean zone with a drilling string including a coiled tubing. The coiled tubing having a bulk, length normalized radial thermal resistance to heat transfer through a wall of the tubing of at least 0.008 m K / W. Flowing a drilling fluid through the drilling string while drilling, where a ratio of a drilling string bulk density to a drilling fluid bulk density is 2 or less.

System, method, and apparatus for harnessing geothermal power from superhot geothermal fluid (SHGF) and magma reservoirs. An exemplary apparatus can include a well screen coupled to an end of a casing string. The well screen, which is at least partially submerged within an underground reservoir, defines a volume in the underground reservoir that can be filled with superhot geothermal fluid. A slidable casing is aligned coaxially with the well screen and configured to be repositioned relative to the well screen. A draw pipe extending through the slidable casing is configured to convey SHGF from the underground reservoir towards the surface in response to the slidable casing being repositioned to obstruct more of a set of apertures in the well screen and an increase in pressure within a cavity of the slidable casing.

This invention relates to the field of oil and gas well sand control technology, and discloses a high-temperature resistant coated sand. The coated sand has a core-shell structure, with the core being skeleton particles and the outer shell being a glass powder coating. This invention also provides a processing method and application method for the high-temperature resistant coated sand. The high-temperature resistant coated sand of this invention uses inorganic glass powder as the coating material, significantly improving its temperature resistance from the current maximum of 350℃ to 400℃, which can meet the sand control requirements of supercritical steam injection heavy oil thermal recovery wells. Under long-term high temperatures in the formation, its performance remains stable, without aging, and its bonding strength remains excellent for a long time, greatly extending the sand control effectiveness. During surface storage, it will not clump or deteriorate due to heat or moisture, allowing for a longer storage time.

This utility model relates to the field of oil extraction technology, specifically disclosing an anti-freezing and anti-theft oil wellhead device. The device includes: a bottom ring fixedly installed on the outer wall of the wellhead; a fixing ring threaded to the upper end of the bottom ring; a functional cover snapped into the inner side of the fixing ring; a wellhead through a well cover; a fixing plate connected to the upper end of the well cover by a fixing bolt; two electrode plates elastically connected to the end of the functional cover near the fixing plate; an insert plate fixedly installed on the upper end of the fixing plate; the insert plate is inserted between the two electrode plates and connected to the functional cover via the insert plate; the fixing plate is connected to the wellhead by a fixing bolt; and the bottom ring is connected to the wellhead by a fixing bolt. The advantages of this utility model are: by installing the well cover and fixing plate inside the functional cover and bottom ring, the functional cover can be removed by rotating the fixing ring; the two electrode plates contacting each other trigger an alarm to alert workers to prevent theft; and anti-freezing is achieved through an electric heating element.

An example of an apparatus is provided. The apparatus includes a magnetic core to be inserted into a borehole to a formation. The apparatus further includes a first coil wound about the magnetic core. In addition, the apparatus includes a first current supply to generate a first current to run through the first coil. Furthermore, the apparatus includes a first controller to control the first current supply. The first controller is to oscillate the first current to generate a magnetic field in the formation. Heat is to be generated in the formation via induction.

The present disclosure relates to the technical field of oil collection, and particularly relates to a Christmas tree oil pipe hot fluid circulation device and a Christmas tree. The present disclosure provides a Christmas tree oil pipe hot fluid circulation device, which comprises a connecting shell and a hot fluid circulation part. The hot fluid circulation part is arranged in a first circulating liquid containing space. The first circulating liquid containing space is defined as a plurality of first liquid inlet and outlet chambers. A circulating liquid interface is used for injecting or discharging circulating liquid into the first liquid inlet and outlet chambers. The hot fluid circulation part has a second circulating liquid containing space and a second oil pipe passage. The second oil pipe passage is in communication with the first oil pipe passage. The second circulating liquid containing space is defined as a plurality of second liquid inlet and outlet chambers. The second liquid inlet and outlet chambers are provided with liquid inlet and outlet circulation interfaces. The plurality of second liquid inlet and outlet chambers are in communication with corresponding first liquid inlet and outlet chambers through liquid inlet and outlet passages. By implementing the technical scheme of the present disclosure, the existing Christmas tree can be conveniently connected, the hot fluid can be effectively circulated, and the traditional oil well operation construction process is not changed.

A method of operating a thermal system includes receiving a data center heat with a downhole fluid, the data center heat generated by at least one heat generating electronic component of a data center. The method also includes exchanging heat between a facility and the downhole fluid via a ground-source heat pump (GSHP) to fulfill at least a portion of a thermal load of the facility. The method further includes maintaining a thermal balance of the downhole fluid with a borehole heat exchanger (BHE) implemented in a borefield.

A flow control system for controlling multiphase formation fluid flow in a wellbore may comprise an electric submersible pump, an intake screen, a controller, a sensor, and a heating component, wherein: the intake screen comprises a shape memory alloy (SMA) mesh configured to perform a reversible modification between a first shape and a second shape; the sensor is configured to measure one or more fluid properties; the controller is communicably coupled to the sensor and the heating component and is configured to: determine whether the one or more fluid properties fall outside a predetermined tolerance at the controller, and actuate the heating component upon determining the one or more fluid properties fall outside the predetermined tolerance; and the heating component is configured to modify the SMA mesh from the first shape to the second shape when actuated, and thereby to control the multiphase formation fluid flow through the intake screen.

Wellbore for extracting heat from magma and a corresponding method. The method includes the steps of drilling a borehole from a surface and towards a magma chamber; supplying a drilling fluid to an interface between a drill bit and a terminal end of the borehole during drilling; terminating the drilling in response to the borehole achieving a predetermined depth; and supplying a thermodynamic fluid into the borehole to maintain the borehole while completing the wellbore. The drilling fluid lifts cuttings out of the borehole and quenches magma to form a solid phase material that can be cut by the drill bit.

An electrocrushing drilling apparatus may include a downhole electrocrushing drill assembly that is part of a bottomhole assembly coupled to a downhole end of a coiled tubing drill string. The coiled tubing drill string can be deployed into a wellbore of a hydrocarbon well to advance the wellbore by way of an electrocrushing drilling operation whereby formation rock is fractured by high voltage electrical energy pulses emitted by electrodes of a drill bit of the electrocrushing drill assembly. Potential damage to electronic or other components of the bottomhole assembly due to excess heat generated by power losses of electrocrushing drill assembly can be minimized or prevented by actively cooling the electronic or other components of the bottomhole assembly using a liquid coolant that is conveyed from an earth surface of the well downhole to the bottomhole assembly and passed through the electronic or other components of the bottomhole assembly.

The invention relates to a closed loop subsea cooling system with subsea coolers. A coolant pump assembly (2) is located in a dedicated sealed, gas-filled coolant pump housing (8a) in coolant fluid connection with at least one subsea cooler (4a, 4b, 4c). Heat sinks (3a, 3b, 3c) in a dedicated sealed, gas-filled electronics housing (8b, 8c, 8d) are in coolant fluid connection with the subsea coolers (4a, 4b, 4c). An accumulator is in coolant fluid connection with the subsea coolers (4a, 4b, 4c), whereby the electric coolant pump (2) is adapted to pump coolant through at least one subsea cooler (4a, 4b, 4c), at least one heat sink (3a, 3b, 3c) and back to at least one electric coolant pump assembly (2), thereby forming a closed loop subsea cooling circuit.

This invention provides a submersible cable, belonging to the field of cables. The submersible cable includes a conductive core, a heating core, a first wrapping layer, a heating layer, and a protective layer. The heating layer is electrically connected to the heating core. The protective layer is made of fibrous tape and fiberglass tape, which are cured together, giving the submersible cable advantages such as high tensile strength, light weight, and good flexibility. It can also heat the well at any time, saving manpower, material resources, and time costs, while avoiding environmental pollution.

The invention discloses a device and a method for improving the microwave mining efficiency of moon water ice, and belongs to the technical field of in-situ mining of extraterrestrial water ice. The device comprises a multifunctional drilling unit, an air pressure reconstruction unit, a multifunctional heating unit and a moisture collection and storage unit, the multifunctional drilling unit is used for drilling frozen lunar soil, and the multifunctional drilling unit is further used for providing a sealed environment for the frozen lunar soil extracted through drilling; the air pressure reconstruction unit is used for setting a pressure environment for frozen lunar soil in the multifunctional drilling unit according to preset requirements; the multifunctional heating unit is used for heating the frozen lunar soil in the multifunctional drilling unit in a pressure environment set by the air pressure reconstruction unit, so that the frozen lunar soil in the multifunctional drilling unit generates liquid water, and ice in the frozen lunar soil is melted and vaporized by taking the liquid water as a microwave absorption and heat conduction carrier; and the water collection and storage unit is used for collecting and storing water vapor generated by melting and vaporizing ice in the frozen lunar soil in the multifunctional drilling unit.

The invention provides an intelligent paraffin control and paraffin removal integrated sucker rod device. The intelligent paraffin control and paraffin removal integrated sucker rod device structurally comprises a sucker rod main body serving as a carrier, the paraffin control system comprises a composite coating and a two-parameter sensor and is used for physical paraffin control and real-time monitoring; the inner wall cleaning device comprises a memory alloy doctor blade, a micro hydraulic push rod and a storage cover and is used for removing paraffin in a lossless manner; and the intelligent regulation and control system consists of a multi-parameter Internet of Things acquisition unit, a single chip microcomputer controller and a wireless transmission module, so that data acquisition, analysis and remote monitoring are realized. According to the device, physical paraffin control and intelligent paraffin removal are combined, pollution of chemical agents to stratums is avoided, energy consumption can be reduced through a self-adaptive regulation and control mechanism of the device, a rod pipe is protected through a lossless paraffin scraping design, the maintenance cost can be reduced through remote monitoring, and the device is suitable for exploitation of high-paraffin-content oil reservoirs.