855 results about "Water well" patented technology

The invention discloses an oil-water well acidification continuous construction electric control system based on multi-parameter monitoring, and relates to the technical field related to acidification control in oil-gas field development, and the system comprises a multi-source data fusion monitoring module which integrates wellhead pressure, temperature, flow, pH value, H2S concentration and acid liquid conductivity, and an underground microwave imaging sensor carries out multi-physical quantity collection; a multi-objective optimization controller is designed, and the acid etching depth, the crack flow conductivity and the construction cost are balanced; the self-adaptive construction control module is based on a variable-frequency and variable-speed acid pump system controlled by a fuzzy sliding mode and is used for realizing stepless regulation of displacement; an intelligent shunting system is arranged, and acid liquor distribution is dynamically adjusted according to the suction volume of each layer section. According to the variable-frequency acid pump system based on fuzzy sliding mode control, stepless adjustment of the displacement is achieved; the intelligent flow distribution system dynamically prepares liquid according to the suction volume of each layer section; and through a three-stage safety interlocking mechanism, power can be cut off and emergency acid discharge can be started within 0.5 second when the temperature rise is greater than or the pressure suddenly changes, so that the well control risk is reduced.

The invention discloses an oil-water well liquid production profile identification and inversion method, system and program product, relates to the technical field of oil-gas field development, and solves the problems that in an existing liquid production profile monitoring method based on DAS and DTS technologies, DAS signals are prone to being interfered by fluid flow, the signal quality is poor, liquid point information cannot be accurately reflected, and the reliability is poor. The problems that liquid production profile information of DTS signal inversion lacks enough spatial constraint conditions, and the inversion result is large in deviation are solved. According to the method, the local liquid production characteristics in the DAS signals are extracted through blind source separation, the liquid outlet point positions are effectively recognized in combination with a statistical screening method, the recognized liquid outlet point positions serve as constraint conditions to be introduced into the DTS inversion process, and the precision and stability of the inversion result are effectively improved; the method not only overcomes the limitation of a traditional F-K spectral analysis method in an oil-water well environment, but also can introduce effective spatial constraints in DTS inversion, significantly reduces inversion errors, and improves the interpretation precision of a liquid production profile.

The invention discloses an end-to-end oil reservoir history fitting method based on flow matching, which belongs to the field of petroleum engineering, and comprises the following steps: step 1, collecting and sorting oil reservoir geological parameters and oil-water well production dynamic data, constructing a data set, and carrying out data preprocessing; step 2, constructing a flow matching infrastructure; step 3, constructing an improved U-shaped network for flow matching velocity field prediction; 4, constructing an ordinary differential equation solver to realize data generation; and 5, integrating and packaging the flow matching infrastructure, improving the U-shaped network and an ordinary differential equation solver to obtain a complete flow matching model, and realizing end-to-end dynamic history fitting of the oil reservoir. And directly inputting a production dynamic condition by utilizing the trained end-to-end flow matching model to generate an oil reservoir parameter field sample conforming to the condition. In the process, additional intermediate link conversion is not needed, and dynamic matching and accurate parameter adjustment of the oil reservoir model can be achieved.

An approach to milling obstructions in sub-hydrostatic wells uses a bottom hole assembly. The bottom hole assembly includes a tool to collect debris downhole and then mechanically, rather than hydraulically, transport the debris to the surface after milling.

The invention discloses a gravity satellite groundwater storage variable vertical signal separation method based on a physical model, and the method comprises the steps: S1, building a physical response model of ground surface deformation and gravity change and groundwater storage variables, and enabling the physical response model to comprise a ground surface deformation response model and a gravity change response model; the method specifically comprises the following steps: step S2, constructing a gravity satellite and InSAR data joint inversion framework, and establishing an observation equation set; s3, regularization constraint conditions are introduced, and a weighted least square method is adopted for solving; and S4, carrying out groundwater reserve vertical separation and verification based on a mass conservation principle. The method overcomes the defect that an existing method depends on dense well observation data, fine monitoring of groundwater storage variables is achieved through physical model constraints, and the method can be widely applied to regional groundwater resource monitoring and management.

The invention discloses a pipe grabbing system for building water well vertical pipe construction, and relates to the technical field of building mechanical and electrical installation, the pipe grabbing system comprises a pipe grabbing mechanism, a rotating disc, a lifting rod, a base, a visual module and a controller; the controller is configured to acquire image data fed back by the visual module if pipe grabbing demand information initiated by a user is received, and perform pipeline identification based on the image data to obtain pipe diameter data of a pipeline; a pipe grabbing control quantity is generated based on the pipe diameter data, a pipe grabbing control instruction is sent to a pipe grabbing mechanism according to the pipe grabbing control quantity, a rotating mechanism is controlled to lift the pipeline away from the ground, and a rotating disc is controlled to rotate; and calling the image data, determining a pipeline mounting position, generating a pipeline height movement amount and a pipeline positioning movement amount, sending a pipeline height control instruction to the lifting rod according to the pipeline height movement amount, and sending a pipeline positioning control instruction to the rotating mechanism according to the pipeline positioning movement amount. The construction method has the effect of improving the construction efficiency.

The invention provides a method for predicting and controlling water injection pressure rise of a water injection well, which comprises the following steps of: 1, collecting data of the water injection well according to different characteristics of each stage of water injection development of an oil reservoir; 2, according to the water injection well data, water injection well dynamic analysis is conducted; 3, establishing a water injection well water injection pressure rise prediction model according to oil reservoir factors by taking the water injection pressure as response and the factors influencing the water injection pressure rise as variables; and 4, according to the water injection well water injection pressure rise prediction model, a water injection well pressure rise control method is formulated. According to the water injection well water injection pressure rise prediction and control method, the prediction model is established, the water injection well pressure rise trend is predicted according to the model, a targeted control method is formulated, advanced early warning is achieved, effective water injection is guaranteed, and the purposes of more water injection and good water injection are achieved.

The invention provides a rainwater and wastewater recycling system for a construction site, and relates to the technical field of rainwater collection, the rainwater and wastewater recycling system comprises an underground water well, a water collecting tank is arranged at the upper end of the underground water well, a center shaft is installed at the circle center of the underground water well, and the water collecting tank is rotatably installed on the surface of the center shaft through a bearing; an unfolding assembly is arranged at the top of the water collecting tank, the water spraying rods can be unfolded and folded through the unfolding assembly, in the unfolding state, the plastic cloth between the two water spraying rods can be unfolded to form an umbrella-shaped structure, and rainwater flows into the water collecting tank through the surfaces of the different plastic cloth; impurities and soil in rainwater are filtered in the space formed by the interlayers in the water collecting tank, then the rainwater is collected by the underground water well, when the water spraying rod is folded, the rainwater collected in the underground water well can serve as dust falling spraying water to be conveyed to the water spraying rod, rainwater collection and recycling are achieved, and the device is convenient to install and suitable for a construction site.

The invention discloses a salt lake brine mining method and system for hydraulically gradient-driven water replenishing and ore dissolving of a sedimentation funnel, and relates to the technical field of salt lake mineral resource development, the method comprises the following steps: S1, collecting water level data of a sedimentation funnel area, calculating gradient distribution, dividing functional areas, and generating zoning parameters; s2, based on the partition parameters, a water injection well network is arranged in the gradient direction, water injection parameters are determined according to the water level difference, and a well network scheme is generated; s3, based on a well pattern scheme, injecting the proportioning solvent into an ore bed in a layered manner to form a directional seepage field, and generating solute transport data; s4, on the basis of solute transport data, enriched brine is extracted in the collection area, the concentration is monitored, and brine parameters are generated; and S5, based on the deviation between the brine parameter and the target value, calculating the regulation amount, adjusting the injection-production parameter to maintain dynamic balance, and outputting the salt lake brine with the target concentration. By regulating and controlling the hydraulic gradient, the form of the settlement funnel is stabilized, the phenomena of stratum disturbance and ground settlement are reduced, and the ecological risk is reduced.

The invention discloses an airport area underground water and surface water system coupling seepage regulation and control method and system, and the method comprises the steps: employing a multi-source data fusion investigation mode to find out regional stratum and structure characteristics, and determining an underground water occurrence migration rule and a surface water and underground water supplement and drainage relation; constructing a coupling seepage model of the underground water and the surface water system under the current condition by applying a numerical simulation method, and defining a dynamic association mechanism of the underground water and the surface water system in time and space; based on a simulation result, determining a transformation scheme that a main stream adopts a double-hole box culvert and a branch stream adopts a single-hole box culvert, and arranging an electric gate at the box culvert; arranging monitoring points of groundwater level, pore water pressure and surface water system flow in combination with field spring water and well distribution, and constructing a cooperative monitoring network; the coupling seepage law of underground water and surface water systems is analyzed based on monitoring data, and the opening degree of a box culvert electric gate is dynamically adjusted to control rising of the underground water level in the flood period. The stability of a water system in an airport area is ensured.

The invention relates to the technical field of well mine salt mining, in particular to a twin-well brine mining device capable of increasing salt mine brine content and a multi-well series connection method thereof, the device comprises a newly-built well unit, a single-well convection brine mining process is set, and the newly-built well unit comprises a water injection well and a brine mining well; the old well unit adopts a twin-well convection brine extraction process and comprises a water injection well and a brine extraction well; the pipeline connecting system is used for communicating the brine extraction well of the newly-built well unit with the water injection well of the old well unit; the flow adjusting device is arranged on the pipeline connecting system and used for adjusting the flow in the pipeline; the central control system is used for monitoring and adjusting operation parameters of each well group; by establishing a series system between the newly-built well and the old well, graded utilization and circulation optimization of brine resources are achieved, a traditional independently-operated well group is converted into an organic whole for cooperative production, low-concentration brine generated during the groove building period of the newly-built well can be secondarily utilized by the old well, and therefore the utilization rate of the resources is remarkably increased.

The invention discloses a brine well wall anti-collapse structure and a construction method and application thereof. The brine well wall anti-collapse structure comprises a supporting disc cavity, a grouting blocking device and a supporting disc pouring body. The grouting blocker is a soft bag and is filled with a first grouting material so as to expand and block the opening of the cavity of the supporting disc; and the branch plate pouring body is formed by injecting second grouting material into the branch plate cavity, and is used for filling the branch plate cavity and plugging a gap between the grouting barrier device and the branch plate cavity. According to the invention, a composite grouting process system of branch plate grouting and high-pressure jet grouting is innovatively developed; a supporting disc structure is formed in a sand layer through expansion and extrusion, then an anti-seepage grouting material is injected through a grouting blocking device to form a sand prevention supporting layer, then a gap between a supporting disc and the grouting blocking device is recharged and solidified through a high-pressure rotary jet grouting technology, and finally a well wall overall reinforcing body formed by mutually meshing and connecting the grouting blocking device and the supporting disc structure is constructed. The problems that an existing brine well faces fine sand silting wells, soft soil layer frameworks are dissolved and collapsed and the like are solved.

The invention discloses a carbon sequestration CO2 multi-layer injection and production collaborative balance system and method.The carbon sequestration CO2 multi-layer injection and production collaborative balance system comprises a multi-layer injection mechanism, a collaborative extraction mechanism and a regulation and control mechanism, the multi-layer injection mechanism comprises an injection well, an injection allocation device and a two-way packer, the injection well vertically penetrates through 2-4 target reservoirs, and the injection allocation device vertically penetrates through the two-way packer; each target reservoir in the injection well is correspondingly provided with an injection allocation device and a two-way packer, each injection allocation device comprises a pressure sensor, a flow controller and a communication module, the collaborative extraction mechanism comprises a plurality of water production wells, the water production wells are arranged on the periphery of the injection well, and the two-way packers are arranged on the periphery of the injection well. Each water production well corresponds to one target reservoir, an adjustable water pumping screen pipe, a pressure feedback valve and a flow metering device are correspondingly arranged in each water production well, the regulation and control mechanism comprises a controller and an optical fiber monitoring device, and the controller is electrically connected with the optical fiber monitoring device, the pressure sensor, the flow metering device and the pressure feedback valve. The carbon sequestration CO2 multi-layer injection-production collaborative balance system provided by the invention has the advantages of high safety and high efficiency.

The utility model relates to the technical field of submersible pumps, and discloses a well submersible pump self-adaptive to water depth, which comprises a mounting ring seat and a submersible pump, a locking column is mounted on the outer wall of the mounting ring seat, threads are arranged at the contact position of the locking column and the mounting ring seat, and a rotating handle for rotating is mounted at the outer end of the locking column. According to the well submersible pump capable of self-adapting to the water depth, after the submersible pump is put into a water well, the buoyancy plate floats on the water surface, so that the distance between a water inlet in the bottom end of the submersible pump and the water surface is adjusted, use is convenient, and manual hoisting control over the depth through a rope on the ground is not needed; the buoyancy plate can move up and down along with the water surface, so that a water inlet in the bottom end of the submersible pump keeps the same distance with the water surface all the time, the supporting screw is prevented from getting close to the water surface to suck impurities floating on the water surface, manual water pump position adjustment is not needed, and use is convenient.

The application discloses an intelligent identification method for dominant seepage channels based on big data, which comprises the following steps: collecting static geological data, dynamic development data and dynamic monitoring data of an oil reservoir and performing data processing; performing data quality analysis on the processed data and establishing a sample database; performing inter-well connectivity analysis and inter-well pressure response analysis in a plane according to the sample database, and identifying dominant channels in the plane; performing interlayer production and absorption law research in a vertical direction according to the sample database, predicting interlayer liquid production and absorption ratios and water cut, and identifying dominant interlayer positions in the vertical direction; and comprehensively identifying dominant seepage channels between each layer of a production well and an injection well based on the identified dominant channels in the plane and the dominant interlayer positions in the vertical direction.

The invention relates to the technical field of building construction, and discloses a construction site water recycling system which comprises a control module, a water well, a sedimentation tank, a water tank, an increasing pump and a spraying pipe. The sedimentation tank at least comprises a first purification tank and a second purification tank, a filtering wall is arranged on the top side of a wall between the two tanks, and a drainage pipe is assembled on the bottom side of the second purification tank; the well is communicated with the first purifying pond through a first pipeline; a first submersible pump at one end of the first pipeline is arranged in the well; the second purifying pond is connected with the water tank through a second pipeline, a second submersible pump at one end of the second pipeline is arranged in the second purifying pond, and a first gate valve, a water meter and a filter are sequentially arranged on the pipeline; the booster pump is connected with the water tank through a third pipeline with a second gate valve and connected with the spraying pipe through a fourth pipeline with a third gate valve. And the control module is electrically connected with the water meter and each gate valve, so that full-flow intelligent cooperative control of water source extraction, purification, transmission and distribution and spraying is realized.

The invention discloses a method and a system for evaluating yield-increasing and injection-increasing aerodynamic force composite plug removal capability of medium-low permeability reservoirs, and relates to the technical field of oil-gas field development. The method comprises the following steps: determining to-be-measured well types, including oil wells or water wells; based on the type of the well to be measured, whether measures are taken or not is judged according to well selection conditions; if measures are taken, well deviation data are collected, and the maximum well deviation position and the maximum well deviation size are found; determining a transmission type according to the well deviation; aerodynamic force operation is carried out according to the transmission type; acidizing operation is carried out after the aerodynamic force operation; and evaluating the effect of the oil well or the water well after the measures are taken. The method solves the problem that large-scale transformation of the fractured thin and poor layer of the medium-low permeability reservoir is difficult to realize, so that reserves are difficult to effectively use; the problems that traditional fracturing transformation measures are long in construction period, high in measure cost and poor in economic benefit are solved. The problem that there is no effective treatment means for a thin layer or a thin interlayer is solved; and the problem of difficulty in measure effect evaluation after traditional process measures is solved.

System and methods for water management method for managing water used in extraction of fluids from subsurface formations wherein water is stored in a plurality of water pits and further wherein water is obtained from one or more water wells. The method includes simulating water pit volumes to determine a water level in each of the water pits at a pit volume simulation time; performing water chemistry analysis to determine one or more chemical properties of water stored in one of the water pits; performing a mapping operation to determine one or more pipeline routes, pit-pit transfer lines, and gathering systems; performing water pit evaporation analysis for a water pit evaporation simulation time; and performing a cost data capture to determine forecast costs at a cost data capture simulation time.

The invention discloses a construction method for an inner dumping site of a strip mine in a water-rich area, which comprises the following steps: when the dumping position and height of a dumping step of the inner dumping site reach design requirements for the first time, constructing a first group of water retaining and combing units on a slope surface of the dumping step, and extending two ends of each water retaining and combing unit to end slope positions on two sides of the strip mine; a pumping well is arranged at the junction of each water retaining and combing unit and the corresponding end slope; after the first group of water retaining and combing units is constructed, the dumping steps continue to advance, after the first group of water retaining and combing units reaches the grouping distance, the second group of water retaining and combing units are constructed again by the same method, and the water retaining and combing units constructed between different groups of adjacent steps are not connected in the vertical direction; and after the second group of water retaining and combing units are constructed, continuing to construct the subsequent water retaining and combing units according to the method and the like. Not only can the communication of an underground water system near the inner dumping site be ensured, but also the influence of underground water and surface water on the inner dumping site and the pit bottom can be avoided.

The utility model relates to the field of salvaging devices, in particular to a directional well salvaging device. The device comprises a mounting shell, a pair of fixing shafts is arranged in the mounting shell, an anti-falling assembly is movably arranged on the two fixing shafts, a transmission assembly is further movably arranged in the mounting shell, and the anti-falling assembly is in transmission connection with the transmission assembly. The problem that in the oil-water well workover operation, some metal sundries often appear in a shaft, and if the metal sundries are not salvaged in time, workover equipment is possibly damaged is solved. And the transmission assembly is arranged to be matched with the anti-falling assembly, so that the adsorbed metal fragments can be covered, the situation that when the device is recycled, the metal fragments adsorbed by a strong magnet collide with the inner wall of a hoistway and fall off is effectively prevented, and the fishing effect is improved. And by arranging the storage disc at the top of the mounting shell, sundries floating on the surface of the liquid in the well can be fished and recycled, and the fishing effect is better.

The invention relates to the field of intelligent scheduling of drainage systems, in particular to an intelligent scheduling method and system for a tunnel drainage system based on multi-source data fusion, and the method comprises the steps: obtaining a final rainfall model after space-time calibration through obtaining data and carrying out space-time alignment; acquiring a seepage field and a surface runoff field of the tunnel to obtain a nonlinear mapping relation between rainfall intensity and tunnel catchment flow; obtaining tunnel predicted catchment flow through a nonlinear mapping relation, collecting water-collecting well liquid level data of a tunnel drainage system and operation output data of a drainage pump group, and generating drainage pump group control reference parameters; and when it is detected that the difference between the predicted catchment flow and the actually measured drainage flow of the adjacent tunnel is smaller than a preset difference threshold value, a frequency adjustment instruction and a start-stop control sequence are output in combination with the drainage pump set control reference parameters. The space-time precision of rainfall prediction is improved, the interference influence of catchment flow among tunnels is fully considered, and the accurate scheduling of a tunnel drainage system is improved.

This invention discloses a test site and method for evaluating the geological storage capacity of carbon dioxide. The test site includes a brine pool and a brine layer and caprock structure located within the pool. The caprock structure is vertically positioned below the brine layer, and a brine reservoir structure is located below it. The brine reservoir structure is connected to a brine storage tank via a simulated extraction well pipe. The brine storage tank is connected to the brine layer via a simulated injection well pipe. Carbon dioxide is injected into the brine reservoir structure via a simulated gas injection well pipe. Pressure sensors installed on the inner wall of the brine pool monitor the pressure within the brine layer and the brine reservoir structure. The carbon dioxide injection rate, brine extraction rate, and brine injection rate are adjusted based on the monitored pressure to achieve pressure balance between the brine layer and the brine reservoir structure. This invention provides a test site for evaluating the geological storage capacity of carbon dioxide under actual site conditions.

The invention provides a low-permeability stratum polluted groundwater remediation device and method.The low-permeability stratum polluted groundwater remediation device comprises an industrial personal computer, the industrial personal computer is used for controlling the working state of an extraction mechanism according to information in a pumping well, and a first monitoring mechanism and a second monitoring mechanism monitor the concentration change of groundwater pollutants and feed the groundwater pollution condition back to the industrial personal computer; the extraction mechanism is used for pumping underground water into the underground water purifier for treatment; the transmission mechanism changes the position of the extraction mechanism according to the distribution of underground water pollutants; the low-permeability stratum polluted groundwater remediation device and method have the advantages that the groundwater extraction efficiency is improved, the groundwater pollutant extraction effect can be effectively improved, and the groundwater extraction operation cost is reduced.

The present invention relates to the field of oilfield injection and production, and discloses a device and method for normal water injection and backwashing of a casing-lost water well. The device comprises a water injection oil pipe, an inner pipe, a first large-diameter packer, a second large-diameter packer, a first well-washing valve, a second well-washing valve, a first screen pipe, and a second screen pipe. The inner pipe is installed inside the water injection oil pipe, and the axis of the water injection oil pipe, the inner pipe, and the casing are the same. The first large-diameter packer is located above the casing loss point, and the second large-diameter packer is located below the casing loss point. The first well-washing valve, the first screen pipe, the second screen pipe, and the second well-washing valve are installed in sequence from top to bottom between the inner pipe and the water injection oil pipe. The present invention is based on the common casing loss situation of water wells. Through a reasonable structural layout, the leakage point is sealed, and the conversion of the water injection channel is realized. It can perform normal water injection and backwashing of the well; replenish formation energy and improve crude oil recovery rate; it is easy to operate, low-cost, and extends the maintenance-free period of the water well.

The present invention discloses an initial rainwater interception well and an initial rainwater interception control method. The rainwater interception well comprises: a well body formed with a well cavity, the well cavity comprising a water distribution well and a power well separated from each other; a sewage interception hole and a water inlet hole connected to the power well are provided on the wall of the water distribution well; an opening control structure for adjusting the opening and closing degree of the sewage interception hole is installed at the sewage interception hole; the well cavity is connected to a clean rainwater outlet pipe; the water inlet level of rainwater from the water distribution well entering the clean rainwater outlet pipe is higher than the water inlet hole and the sewage interception hole; a liquid level sensing structure is provided in the power well and is transmission-connected to the opening control structure; the liquid level sensing structure can rise and fall with changes in the liquid level of the power well; the rise of the liquid level sensing structure can link the opening control structure to reduce the opening degree of the sewage interception hole. The present invention does not require the installation of an electrically controlled valve or gate, does not require external power, has a wide range of applications, is low-carbon and energy-saving, has low construction costs, and is easy to maintain.

The embodiment of the invention discloses a low-permeability oil reservoir augmented injection method and device, a terminal and a storage medium, and belongs to the field of oil reservoir development. The method comprises the steps that for any well group of the low-permeability reservoir, the water well augmented injection amount of the well group is determined based on the accumulated production volume and the accumulated injection water volume of the well group; determining a preset crack length of the oil layer based on the minimum oil-water well distance of the well group; based on the water well injection increasing amount and the preset crack length, the stage water injection amount and the pump stopping duration of the high-pressure pump truck are determined; based on the stage water injection rate and the pump stopping duration, the high-pressure pump truck is controlled to inject water into the oil layer multiple times through the water injection well under the pressure higher than the fracture pressure till the accumulated water injection rate is equal to the water well injection increasing rate. According to the technical scheme, the high-pressure pump truck can be controlled to inject water into the oil layer at the pressure higher than the fracture pressure, cracks can be formed in the oil layer while oil layer energy is supplemented, the oil layer without the effect of conventional water injection can be obviously improved, and the problem that water cannot be injected into the low-permeability oil reservoir is solved.

The utility model provides a vacuum dewatering well structure capable of preventing silt blockage. Outer water inlet holes are formed in the pipe wall, close to the bottom, of an outer well pipe in an array mode. The inner well pipe is arranged in the middle of the outer well pipe, the lower end of the inner well pipe extends to the position near the bottom of the outer well pipe, and inner water inlet holes are formed in the pipe wall near the bottom of the inner well pipe in an array mode. The sealing ring plug is detachably arranged at the tops of the outer well pipe and the inner well pipe, and a seal is formed at the top of an annular space of the outer well pipe and the inner well pipe; the sealing plate is detachably arranged on the top of the inner well pipe, and sealing is formed on the top of the inner space of the inner well pipe. The water pumping unit comprises a water pump and a water pumping pipe, the water pumping pipe is hermetically connected to the sealing plate, the upper end is connected with the water pump, and the lower end extends near the bottom of the inner well casing; an exhaust pipe of the vacuumizing unit is connected to the sealing plate in a sealed mode, the upper end is connected with an exhaust pump, and the lower end extends into the inner well pipe. Soil particles are filtered in multiple layers, the water pumping rate of the vacuum dewatering well is increased, and assembling, disassembling and cleaning are convenient.

The invention discloses a fractured horizontal well crack water exploration numerical simulation method. The method comprises the steps that a crack and a water injection well corresponding to a target fractured horizontal well are determined; establishing an oil reservoir geologic model corresponding to the target fractured horizontal well on-site scale, and distinguishing formation water components and injection water components of the water injection well in the oil reservoir geologic model by giving different definitions; based on the different definitions, a historical fitting result is simulated through numerical values, and a source water injection well and a source crack of production water of the target fractured horizontal well are determined; the problem that effective water plugging measures cannot be specifically formulated due to the fact that the existing horizontal well numerical simulation water exploration technology cannot comprehensively and accurately recognize the water outlet crack condition is effectively solved.

The present application relates to a kind of oil well water cut prediction method and system based on multi-scale knowledge distillation, it is related to oil and gas field development engineering technical field, to solve the problem of complex oil well water cut evolution mechanism, injection-production response hysteresis in oilfield development is strong.Method obtains oilfield block production, injection and well location relationship data, constructs oil-water well time sequence dynamic characteristics after preprocessing;Through lag correlation analysis, the optimal time lag and dynamic weight between wells are obtained, and the dynamic weighted effective injection characteristics suitable for history and future are constructed;Time sequence sample is constructed and dataset is divided according to time, soft label and dynamic representation are output by training multi-scale teacher model fusion, student model is constructed and aligned with teacher and student samples, and knowledge distillation training is completed by multi-loss self-adaptive supervision;Water cut prediction, index deduction and water cut risk early warning are realized by using student model.The present application effectively balances prediction accuracy and reasoning efficiency, improves the accuracy of oil well water cut time sequence prediction, and provides support for oilfield injection development control.

Disclosed are a gravity energy storage apparatus based on a disused oil, gas and water well group, and a power generation system. The gravity energy storage apparatus comprises a secondary control system and a plurality of energy storage working units connected to the secondary control system, and each energy storage working unit comprises a disused oil, gas and water well and a gravity energy storage device. The power generation system comprises a main control system and at least one wind or photovoltaic power generation field for supplying power to a main power grid by means of the gravity energy storage apparatus.