58 results about "Underground storage" patented technology

An underground storage system for storing fluid includes a hole having a bottom, a support element including at least one opening able to receive a joining element, at least one reservoir having a longitudinal axis, a bottom end and a top end, a first closure able to close the reservoir at its bottom end, and a second closure able to close the reservoir at its top end. The top end is able to be joined to the support element via the joining element such that the reservoir is hung inside the hole and such that an axial clearance able to absorb axial thermal expansion of the reservoir remains between the first closure and the bottom.

The invention discloses a solid potassic salt mine underground screening and crushing integrated ore storage bin system, and belongs to the technical field of solid potassic salt mine mining. The system is composed of a roadway type raw ore bin, a feeding chamber and a vertically-arranged screening and crushing chamber. The raw ore bin is communicated with the main transportation roadway and is internally provided with a bulldozer; the feeding chamber is provided with a surge bin and a screw feeder; a linear vibrating screen and a double-geared-roller crusher are arranged in the screening and crushing chamber. The core of the method is that oversize coarse grain materials are returned to a surge bin through an oversize transfer belt conveyor to form closed-loop crushing circulation, and it is ensured that the ore removal granularity is smaller than or equal to 20 mm. The problem that sylvite ore is prone to deliquescence and hardening is fundamentally solved through the roadway type ore storage bin, underground storage, screening and crushing integrated operation is achieved, the ore directly enters an ore dressing, decomposing and crystallizing workshop after being lifted to the ground, the ground ore dressing links are reduced, occupied ground sites are reduced, the working efficiency and the system reliability are improved, and the production cost is reduced. The method is especially suitable for efficient mining of deliquescent solid potassic salt ore.

A test system and method for determining migration front based on pulse pressure enhanced distributed strain belong to the technical field of CO2 geological storage and oil and gas resource development. The system includes a CO2 displacement brine unit, an optical fiber sensor, a pulse pressure injection unit, a data acquisition and processing system, etc. By injecting high-pressure gas on the other side of the core, a large pressure difference is generated at the two-phase interface, which in turn causes significant strain changes. The optical fiber sensor monitors these strain changes in real time, and the data acquisition and processing system analyzes and determines the CO2 / saline migration front position. The method has the advantages of high monitoring accuracy, fast response, wide applicability, etc., and can dynamically track the migration of CO2 during the underground storage process, ensuring the safety and effectiveness of the storage.

The invention relates to a shale compressive strength logging prediction method, which comprehensively considers the influence of stratum stress, temperature and hydration, and specifically comprises the following steps of: preparing a shale standard cylindrical core, sequentially carrying out ultrasonic testing and drilling fluid hydration treatment on undisturbed shale under different temperature and confining pressure conditions, and carrying out shale compressive strength logging prediction. Performing ultrasonic testing under the same condition after the hydration to obtain longitudinal and transverse wave time difference before and after the hydration of the shale; based on hydration, after interval transit time is extracted, a shale compressive strength experiment is carried out. According to the method, the influence of stratum stress and temperature is considered, so that the prediction result is more accurate and reliable; the logging data is used for prediction, the efficiency is improved, and time consumption and high cost of laboratory testing can be reduced. The method is not only suitable for the field of petroleum and natural gas exploration, but also can be applied to the fields of geotechnical engineering, underground storage and the like, and the application range and the market potential are expanded.

The application relates to the technical field of ecological environment engineering, and discloses a modular rain flood resource deep purification and underground storage integrated device, which comprises a radial shear purification module, a hydraulic closed locking assembly and a spiral push flow storage module which are coaxially and communicatively arranged from top to bottom; the radial shear purification module comprises a first shell, a composite filter material layer filled in the first shell, an inverted funnel-shaped flow guide cover arranged above the composite filter material layer and a central siphon assembly, a horizontal annular flow channel is formed between the lower edge of the inverted funnel-shaped flow guide cover and the upper surface of the composite filter material layer; the spiral push flow storage module comprises a second shell and a spiral flow guide plate arranged in the second shell. Through cooperation of the inverted funnel-shaped flow guide cover and the central siphon assembly, vertical gravity flow during cleaning is converted into horizontal radial converging flow along the filter material surface, the integrity of a biofilm structure is maintained, and long-term stable operation of the filter layer can be realized without external power.

The invention relates to the technical field of salt cavern underground reservoir building, in particular to a construction method for sand blocking prevention of a salt cavern reservoir low-position brine discharging well. According to the method, drilling operation of a brine discharging well is conducted at a target position near a salt cavity of the salt cavern storage cavern, so that the bottom of the brine discharging well communicates with a bottom insoluble substance residue space of the salt cavity; a water injection pipe is put into the brine discharging well, water is injected into the bottom of the drilling well, and a dissolving cavity is formed between the bottom of the drilling well and the bottom insoluble substance residue space of the salt cavity; and the dissolving cavity is communicated with the brine discharging well to form a brine discharging channel, and construction is completed. According to the method, it can be effectively guaranteed that the sand blocking prevention function is achieved when the brine discharging well is used for discharging brine, the brine discharging efficiency of the brine discharging well is improved, and the sand blocking risk and the operation cost in the gas injection brine discharging process are reduced; the brine discharging efficiency and the utilization rate of the gas storage space are improved; cost is low, reliability is high, and the problem of sand blocking of the brine discharging well can be well solved.

An underground storage system (1) for fluid storage. The device comprises a cavity (2) formed in a land (3), the cavity (2) having a bottom (6); a holding element (4) comprising at least one opening; at least one tank (5) having a longitudinal axis, a lower end (13) closed by a first closure device (12) and an upper end (14) closed by a second closure device (15); and means for access from the outside of the cavity (2), comprising at least one of the following: means for access to each tank (5), means for access to the inside of the tank (5), and means for access to the contents of the cavity (2).

The invention relates to the field of oil and gas well information acquisition, and discloses an underground storage type pressure and temperature monitoring device which comprises a temperature and pressure monitoring sleeve pipe nipple, a temperature and pressure sensor, an energy supply module and a signal processing module. The temperature and pressure monitoring casing pipe nipple is used for being connected with a casing pipe and is provided with a mounting cavity. The temperature and pressure sensor is arranged in the installation cavity and collects pressure and temperature signals in the well. The energy supply module and the signal processing module are both arranged in the temperature and pressure monitoring sleeve pipe nipple and are both electrically connected with the temperature and pressure sensor, and the energy supply module supplies power to the temperature and pressure sensor; the signal processing module comprises a transmitter, and monitoring data can be transmitted to the outside through the transmitter. The device is directly connected with the sleeve through the temperature and pressure monitoring sleeve short section, and is synchronously tripped along with the sleeve, so that the later independent well descending operation is not needed, the problems that traditional monitoring equipment is tedious in deployment and easy to interfere with the well completion process are solved, and the whole-period monitoring from sleeve descending, well cementation, perforation and pressure testing to 5-10 years of production can be covered.

This invention belongs to the field of carbon resource utilization and carbon dioxide emission reduction, and discloses a method for underground storage, conversion and reuse of carbon resources. Taking solid carbon resources as an example, the method includes the following steps: (1) converting solid carbon resources into carbon-containing liquids; (2) detecting the polymerization characteristics and / or reaction characteristics; if the detection results do not meet the preset requirements, the carbon-containing liquids are modulated; (3) injecting the carbon-containing liquids into underground storage points located at a depth of ≥800 meters, so that the carbon-containing liquids solidify or react at the underground storage points. This invention improves the overall process design of the storage and conversion method, modulates the polymerization characteristics and / or reaction characteristics of the carbon-containing liquids using modulation, and then injects the carbon-containing liquids into underground storage points, so that the carbon-containing liquids solidify or react under the pressure conditions at the underground storage points, thereby achieving storage and conversion. This invention injects carbon resources into deep underground layers, resulting in long-term storage.

This invention discloses a silo-type chamber for compressed air energy storage power stations, underground storage facilities, and construction methods, relating to the field of underground energy storage technology. It includes: a storage chamber body, which is a hollow, sealed structure with a hemispherical top, a cylindrical middle section, and a dish-shaped bottom. From the outside to the inside, the storage chamber body is sequentially equipped with a concrete lining layer and a steel lining sealing layer. The outer wall of the concrete lining layer is fixed to the surrounding rock, and the steel lining sealing layer is fixed to the inner wall of the concrete lining layer. The steel lining sealing layer is used to contain compressed air, and the concrete lining layer is used to bear the load of the compressed air and transfer it to the surrounding rock. It has a wide range of applications, effectively saves costs, and offers high cost-effectiveness.

The invention belongs to the technical field of micro-discharge ore storage, and relates to an anti-seepage and shielding structure for a micro-discharge ore underground storage cavern and a construction method, and the anti-seepage and shielding structure comprises a primary support concrete layer, an iron ore powder-containing secondary lining concrete layer, a first feldspar powder coating, a second feldspar powder coating and a water film layer. The secondary lining concrete layer containing the iron ore powder is used for shielding gamma rays, and the water film layer between the first feldspar powder coating and the secondary lining concrete layer is used for shielding neutron rays. A first impermeable layer is formed on the surface of the primary support concrete layer through the first feldspar powder coating, a second impermeable layer is formed on the surface of the secondary lining concrete layer through the second feldspar powder coating, and micro-emission nuclide migration is prevented while impermeability is achieved through cooperation of the first impermeable layer, the second impermeable layer and the secondary lining concrete. The long-term stability of the underground storage cavern is achieved, and meanwhile isolation between the underground storage cavern and the underground ecosphere is guaranteed.

The invention discloses a real-time coupling analysis method suitable for a coal mine water storage goaf, and belongs to the field of coal mine safety, and the method comprises the steps: building a multi-field coupling simulation model for the coal mine water storage goaf, and obtaining a monitoring data set of the coal mine water storage goaf in a target time period; performing boundary condition updating on the multi-field coupling simulation model based on the monitoring data set to complete correction of the multi-field coupling simulation model; according to the corrected multi-field coupling simulation model, the evolution state of the coal mine water storage goaf in the target time period is determined. The problem of insufficient response effect in the prior art is relieved, the self-adaptive analysis capability of the system in a dynamic change environment is also improved, the influence of monitoring delay and model errors on operation and maintenance decision is also reduced while the operation safety of the goaf underground reservoir is improved, and the operation and maintenance efficiency of the goaf underground reservoir is improved. The problem of insufficient early warning response effect caused by information barriers in coal mine water injection mining control monitoring is solved.

The present application belongs to the technical field of organic solid waste storage, and particularly discloses a carbon-containing liquid underground perfusion method and system, which perfuses carbon-containing liquid into the ground for solidification and storage, and the perfusion parameter adjustment mode is as follows: when the real-time distance between the upper surface of the perfusion object and the ground is greater than a height threshold, the difference between the pipe bottom pressure and the underground storage pressure is detected in real time; if the difference changes decreases, the perfusion temperature and the perfusion pressure are increased, and the perfusion viscosity is reduced; if the difference changes increases, the perfusion temperature and the perfusion pressure are reduced, and the perfusion viscosity is increased; if the difference changes does not change, the current perfusion parameters are kept. When the distance is not greater than the height threshold, the pipe bottom pressure is detected in real time; if the pressure suddenly changes, the perfusion is stopped; otherwise, the perfusion temperature is increased, and the perfusion pressure is reduced. The present application utilizes the self-polymerization characteristics of carbon-containing liquid in a high-temperature and high-pressure geological environment to gradually polymerize and solidify the carbon-containing liquid, realizes underground storage, and can realize large-scale underground carbon sequestration.

The application provides an anaerobic sealed fermentation tank for mixed biological feed, relates to the technical field of biological anaerobic fermentation, and comprises a tank body and a cover. A stirring assembly is installed on the tank body. The stirring assembly comprises a motor and a main shaft. A pumping assembly is installed on the tank body. The pumping assembly comprises a sleeve and a water pump. A heat dissipation assembly is installed at the bottom of the tank body. The heat dissipation assembly comprises a sleeve and a fan. A heating assembly is installed on the sleeve. The heating assembly comprises a guide pipe and an electric heating wire. When any one of the gates leaks, the remaining two gates can be used for sealing and sharing the air pressure in the chamber, a new underground storage technology can be provided, compressed air leakage in the chamber can be avoided, the energy storage safety of the chamber can be ensured, energy waste caused by compressed air leakage can be avoided, an energy-saving reconstruction technology of equipment is provided, and the anaerobic sealed fermentation tank is suitable for mixed biological feed.

A petroleum coke carbon capture and sequestration method is provided which includes processing the petroleum coke into a petroleum coke particulate, treating the petroleum coke particulate to recover components such as Vanadium, preparing a slurry including the petroleum coke particulate, and injecting the slurry into an underground area. The underground area could be a live crude oil extraction well, where it could displace crude oil, an underground storage facility, a salt formation, or the like.

This invention belongs to the field of carbon emission reduction and hazardous waste treatment, and discloses a method for co-processing carbon and solid waste from bio-oil and hazardous waste. Taking solid hazardous waste as an example, the method includes the following steps: (1) crushing the solid hazardous waste; (2) determining the formulation scheme of the bio-oil-hazardous waste mixture; (3) mixing the bio-oil and solid particles according to the formulation scheme to obtain a bio-oil-hazardous waste mixed slurry; (4) injecting the bio-oil-hazardous waste mixed slurry into an underground storage point at a target depth, so that the bio-oil-hazardous waste mixed slurry polymerizes and solidifies at the underground storage point, thereby achieving carbon and solid waste sequestration. The method of this invention utilizes the fluid transport effect and polymerization characteristics of bio-oil to carry hazardous waste into the deep underground for polymerization and solidification, thereby achieving long-term stable sequestration of hazardous waste. At the same time, it permanently sequesters the carbon contained in the bio-oil itself underground, preventing it from being converted into carbon dioxide and emitted into the atmosphere, thus achieving co-processing carbon and solid waste sequestration.

This underground storage system (1) for the storage of fluids comprises a recess (2) made in a ground (3), said recess (2) having a bottom (7), a support element (5) comprising at least one opening, an assembly element (19) inserted in the opening of the support element (5), a ventilation device (4) comprising at least one ventilation cavity and at least one tank (6), said tank (6) having a longitudinal axis, a lower end (14) closed by a first closing means (15), and an upper end (16) closed by a second closing means (17), said upper end (16) being assembled to the support element (5) so that the tank (6) is suspended inside the recess (2) and an axial clearance (G) suitable for absorbing thermal expansion of said tank (6) remains between the first closing means (15) and the bottom (7). Figure for the abridged version: Fig 1

This invention relates to the field of underground reservoir site selection technology, specifically to a method for selecting underground compressed hydrogen energy storage sites. The method includes: collecting multi-source borehole data from various candidate sites and extracting microscopic lithological characteristics, macroscopic stratigraphic characteristics, and parameter correlation characteristics; constructing a geological framework model based on the macroscopic stratigraphic characteristics, using data reflecting microscopic lithological characteristics and parameter correlation characteristics as soft data to generate several heterogeneous stochastic geological models; selecting several of these models as representative models and performing multi-physics coupled numerical simulations to obtain a series of performance index sets; quantifying the uncertainty of each performance index set and using a multi-objective optimization ranking method to comprehensively score and rank each candidate site; this method enables full utilization of multi-source borehole data, considers geological uncertainties, allows for high-fidelity stochastic geological modeling and simulation, and enables quantitative assessment of the performance and risk of multiple candidate sites.

A process for recovery of hydrogen from underground storage is provided. The process involves sending a hydrogen stream stored in an underground cavern to a pressure swing adsorption unit and then to an electrochemical compression unit to produce hydrogen having a purity of above 99.5 mol% to close to 100 mol%.

An underground storage system for storing fluid includes a hole having a bottom, a support element including at least one opening able to receive a joining element, at least one reservoir having a longitudinal axis, a bottom end and a top end, a first closure able to close the reservoir at its bottom end, and a second closure able to close the reservoir at its top end. The top end is able to be joined to the support element via the joining element such that the reservoir is hung inside the hole and such that an axial clearance able to absorb axial thermal expansion of the reservoir remains between the first closure and the bottom.

The present application belongs to the field of natural gas underground storage ground engineering, and particularly relates to a gas quantity working condition self-adaptive dew point regulation system, method, device and storage medium, aiming to solve the problem that the prior art lacks a comprehensive and specific gas quantity working condition self-adaptive dew point regulation method. The present application comprises: parallel J-T valve groups; parameter acquisition sensors are arranged on both sides of the J-T valve; the parameter acquisition sensors are used to acquire dew point factor parameters on both sides of the J-T valve; an AD module of a field RTU is used to receive dew point factor parameters transmitted by a communication system, and convert the dew point factor parameters into digital signals, which are then transmitted to a dew point regulation platform in a control room of the gas storage through the field RTU; and the dew point regulation platform in the control room of the gas storage is used to regulate the J-T valve according to the dew point factor parameters. The present application creates a gas quantity working condition self-adaptive dew point regulation method, and provides a new mode for smooth operation of gas quantity working conditions in all scenes of the gas storage.

The utility model discloses a regulating reservoir using a construction adit as an underground cave depot capacity expansion. The regulating reservoir comprises a regulating reservoir body, the construction adit, a water delivery tunnel, a surge shaft, a flow control facility and a plugging body. The regulating reservoir is positioned at the downstream of the flow control facility and plays a role in regulating a downstream water delivery pipeline communicated to a water plant; one end of the construction adit is connected with the regulating reservoir, and the other end of the construction adit is connected with a tunnel section of the water delivery tunnel at the upstream of the surge shaft; the water conveying tunnel is a main flow passing channel, and the surge shaft is located on the upstream of the tail end of the water conveying tunnel and arranged close to a flow control facility as much as possible. The flow control facility is located at an outlet of the water delivery tunnel, the upstream is connected with the water delivery tunnel through a branch pipe, the downstream is connected with the regulating reservoir, the flow control facility comprises a flow regulating valve and a power station, and the flow regulating valve and the power station are arranged in parallel; the plugging body is arranged at the intersection of the construction adit and the water delivery tunnel and used for sealing the inner end of the construction adit. The utility model has the advantages that the construction land is saved, and the building materials are saved.

The invention relates to the technical field of underground reservoir site selection, in particular to a compressed hydrogen energy storage underground reservoir site selection method, which comprises the following steps: collecting multi-source drilling data of each candidate reservoir site, and extracting microscopic lithologic characteristics, macroscopic stratum characteristics and parameter correlation characteristics; constructing a geological architecture model according to the macroscopic stratum characteristics, and generating a plurality of heterogeneous random geological models by taking data reflecting the microcosmic lithologic characteristics and the parameter correlation characteristics as soft data; selecting a plurality of models as representative models, and performing multi-physics field coupling numerical simulation to obtain a series of performance index sets; performing uncertainty quantification processing on each performance index set, and performing comprehensive score sorting on each candidate library address by adopting a multi-objective optimization sorting method; according to the method, multi-source drilling data can be fully utilized, geological uncertainty is considered, high-fidelity random geological modeling and simulation can be carried out, and quantitative evaluation can be carried out on the performance and the risk of a plurality of candidate library addresses.

The application discloses a salt cave natural gas underground storage natural gas control optimization method and system, and relates to the field of salt cave natural gas control. The method comprises the following steps: a series injection method is used to inject natural gas into multiple cavities of a salt cave natural gas underground storage in real time, a first temperature value and a first pressure value of natural gas in any cavity are collected in real time, when the first temperature value and the first pressure value are in a first preset cavity condition, a control instruction is sent to adjust the current cavity injection state in real time until the injection into the any cavity is completed, a current second temperature value and a current second pressure value of the natural gas in the any cavity collected when the injection is completed are used to calculate the storage amount of the any cavity, and the injection optimization of the any cavity is completed. The method solves the problem that the injection and production process of each cavity in the storage lacks unified deployment, and plans and manages each cavity in the storage area, improves the cavity working gas amount, and prolongs the service life of the salt cavity.

Systems and methods of the present disclosure relate to storing carbon dioxide (CO2) underground. A method includes contacting a metal tool with the CO2 and forming hydrated metal carbonates (HMCs) on the tool due to contact of the CO2 with the metal of the tool. Expansion of the tool occurs due to formation of the HMCs.

We provide CO2 reduction systems and other technologies that can reduce CO2 emissions significantly. [Solution] The CO2 reduction system 1 comprises a generator 10 that crushes plants 100 that have absorbed CO2 emitted into the atmosphere to produce chips 101, and an underground storage unit 20 installed underground to store the chips 101 produced by the generator 10.

The application discloses a design method and system of a compressed air energy storage power station operation strategy, comprising the following steps: S1, collecting power grid load statistical data of an area where the power station is located; S2, generating an expected load curve in the entire operation cycle according to the collected power grid load statistical data, by adjusting the distribution of holidays and weekdays and daily load extreme values; S3, based on the expected load curve, using a dynamic programming method to iteratively calculate the charging and discharging strategy of each time node, and then calculating the optimal long-term operation strategy of the power station, so as to evaluate the long-term stability and tightness of the underground storage of the compressed air energy storage power station. Based on the dynamic programming method, the periodic change of the power load and its influence are fully considered, the long-term optimal operation strategy of the power station is calculated, and the long-term stability and tightness of the underground storage are better evaluated.

The application discloses a steel plate sealing structure of compressed air underground gas storage suitable for soft rock, which comprises a steel plate in the shape of rectangle after unfolding and a telescopic device, two wide edges of the steel plate are overlapped together to form a cylindrical cavity, the wide edge overlapped with the inner wall of the cavity is defined as the first overlapping edge, the wide edge overlapped with the outer wall of the cavity is defined as the second overlapping edge, one end of the telescopic device is fixedly connected with the first overlapping edge, and the other end is fixedly connected with the inner wall of the cavity or the second overlapping edge. The steel plate sealing is arranged on the lining concrete inner wall of the gas storage, and corrugated steel plates are arranged at the overlapping positions, so that when the gas storage arranged in soft surrounding rock is inflated and subjected to high pressure of internal gas, the telescopic deformation of the corrugated steel plates can adapt to the large deformation of the external soft rock under the action of high internal pressure, the stress of the steel plate is reduced, the strength damage of the sealing steel plate is prevented, and the air tightness and safe operation of the gas storage are ensured. The application has the advantages of simple structure, safety and stability, economy, practicality and easy implementation.

1. Name of the designed product: production safety monitoring graphical user interface of electronic equipment (underground storage tank). 2. Use of the designed product: an electronic device. 3. Design points of the designed product: in the graphical user interface. 4. Picture or photo that best shows the design points: front view. 5. Use of the graphical user interface: to display production data such as storage station pressure liquid level temperature, gas concentration, water pressure water level air pressure, etc.