594 results about "Water well" patented technology

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.

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 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 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 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.

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.

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 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 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.

This invention relates to a large-scale hydrodynamic landslide control structure integrating anti-slide piles and a drainage well. The structure includes anti-slide piles, a drainage well, a sliding plate, and an inclined water guide pipe. It utilizes solid I-beam piles, eliminating the cavity design and significantly improving the mechanical performance of the anti-slide piles. For the first time, grooves are set on both sides of the pile body to utilize rolling friction to adapt to landslide thrust and deformation. The drainage well wall is constructed by splicing perforated pipe walls and unperforated solid pipe walls using a mortise and tenon structure, ensuring uniform stress distribution and significantly improving the well wall's compressive strength while reducing leakage. The water collection holes on the perforated pipe wall adopt a Tesla unidirectional flow structure, completely solving the problem of well water backflow. The front and middle sections near the anti-slide piles use perforated pipe walls with unidirectional water collection holes. A drainage hole for connecting to the inclined water guide pipe is located at the rear bottom of the drainage well. One end of the inclined water guide pipe connects to the drainage hole, and the other end connects to a drainage ditch on the landslide body.

The application discloses a road rainwater filtering and collecting system convenient to clean and transport, which comprises a road side inclined bottom sewer, a filtering and sand setting well, a filtering and water storage pool and a sand and gravel filtering cage. When it rains, the initial rainwater mixed with impurities such as dry leaves and the like collected on the road surface flows into the road side inclined bottom sewer, and enters the sand setting well through the first water inlet under the action of gravity. With the increase of the water collection amount, the water surface in the sand setting well slowly rises to reach the filtering plate, and then the rainwater penetrates into the filtering well through the filtering plate. The rainwater further penetrates into the sand and gravel filtering cage through the water permeable round hole plastic filtering plate on the side of the filtering well for filtering and purifying. Under the influence of gravity, the rainwater flows to the water storage pool through the steel support frame, and is stored in the water storage pool. The stored rainwater can be pumped to the ground through the water guide pipe arranged in the sand and gravel filtering cage, and is used for irrigating facilities and greening. The rainwater can also flow into the horizontal branch pipe through the drainage hole, and is connected to the municipal drainage pipe network. The whole system can not only improve the road water storage capacity and the road drainage capacity, but also purify the initial rainwater and irrigate the vegetation on the spot.

The invention discloses an underground water remediation device and method, and belongs to the technical field of underground water purification, the underground water remediation device comprises a deep well and a plurality of seepage wells circularly distributed on the periphery of the deep well, a first water suction pump is arranged in the deep well, a water outlet pipe is communicated with the upper portion of the first water suction pump, and the tail end of the water outlet pipe is communicated with a reservoir; the drainage end of the reservoir is communicated with a settling tank, the tail end of the settling tank is communicated with a resin filtering device, the drainage end of the resin filtering device is communicated with a reverse osmosis device through a communicating pipe, and the drainage end of the reverse osmosis device is drained into the seepage well through a drainage pipe. The repair device and method can effectively improve the filtration efficiency of the reverse osmosis membrane, improve the purification effect of the reverse osmosis membrane on underground water, avoid scaling and pollution on the surface of the reverse osmosis membrane, and prolong the service life of the reverse osmosis membrane.

This utility model discloses a saline-alkali land structure with cyclic salt flushing and multi-layer synergistic desalination functions. It includes an ecological cover layer on the surface, beneath which are sequentially arranged a slow-release conditioning layer, a salt-blocking isolation layer, and a salt-draining layer. The salt-draining layer contains several porous salt-draining conduits, which are connected to an underground collection well via a collection and drainage device. It also includes a water return system, one end of which is connected to the collection and drainage device in the collection well, and the other end returns the water to the ecological cover layer, slow-release conditioning layer, salt-blocking isolation layer, and salt-draining layer. This application achieves systematic management of soil salinity migration, dispersion, isolation, and removal through the synergistic interaction of multiple layers of functions, including ecological cover, slow-release conditioning, physical barrier, and salt-draining. This effectively overcomes the drawbacks of traditional single-method improvement methods, such as low desalination efficiency and frequent salt return.

This utility model belongs to the field of HVAC technology and discloses an anti-clogging water source heat pump system with automatic unclogging function. It includes a water source heat pump unit and a water supply well. A water source pump is installed in the water supply well, and the water source pump is sequentially connected to a well water outlet pipe, a cyclone separator, a self-clogging multi-stage filter box, a water tank outlet pipe, and the water source heat pump unit. The outlet of the water source heat pump unit is connected to a well water reinjection pipe via a pipeline, and the well water reinjection pipe is connected to a return water well. The outlet of the water source heat pump unit is also connected to an end user via a terminal water supply pipe. The end user is connected to the inlet of the water source heat pump unit via a terminal return water pipe. A terminal circulating water pump is installed on the terminal return water pipe, and the terminal return water pipe is also connected to an external makeup water pipe. This system has an automatic water source cleaning function, which can effectively and promptly clean impurities on the water source side and reduce labor costs. Furthermore, maintaining a balanced water volume between the pumping well and the reinjection well ensures the dynamic balance of groundwater and the stability of system operation.

The utility model provides a drainage pipeline inverted siphon device capable of automatically dredging and discharging sludge. The drainage pipeline inverted siphon device comprises a water inlet well, a water outlet well, a water inlet well sludge hopper, a water outlet well sludge hopper, an inverted siphon pipe, a water inlet well lifting device, a water outlet well lifting device, an air compression device, a sludge discharging air pipe, an air flushing pipe, an inclined tee joint and a spray head. The top of the water inlet well sludge hopper is communicated with the top of the water outlet well sludge hopper through an inverted siphon. The device has the following advantages: 1, sludge deposited at the bottom of the sludge bucket is lifted to the ground by using an air stripping method and can be pulled away by a sewage suction truck; 2, sludge deposited at the bottom of the inverted siphon is flushed into a sludge hopper of a water outlet well through compressed air, and then the sludge is discharged out of the system through an air stripping method; 3, the same set of air compression device can be adopted as an air source for desilting and sludge discharging, and the energy-saving effect is achieved; the sludge monitor in the water outlet well is used for monitoring the sludge thickness, automatic dredging and sludge discharging are started according to a signal, time and labor are saved, and management is convenient.

The utility model discloses a prestressed pipe pile head water seepage treatment device for muddy soil, and relates to the technical field of building construction, the treatment device is arranged on a bottom plate on which a pipe pile is constructed and a pile core is not poured with water seepage, and the treatment device comprises a round steel supporting plate, the round steel pipe penetrates through the through hole, the lower part of the round steel pipe is embedded below the round steel supporting plate by 200mm, and drain holes are uniformly formed in the peripheral side of the embedded section; the half-cut PVC pipe covers the top of the round steel pipe, one end of the half-cut PVC pipe is closed, and the other end of the half-cut PVC pipe extends to the water collecting well; the protection layer is poured outside the round steel supporting plate and the round steel pipe, so that the top of the round steel pipe is flush with the surface of the bottom plate; the drainage holes evenly distributed in the circumferential side of the round steel pipe can rapidly collect underground water, the PVC pipe is cut in half to enlarge the flow guide section, and water flow blockage is avoided. The brick structure is filled with the gravel layer, silt is effectively filtered, drainage holes are prevented from being silted, and the service life of the device is prolonged.

The utility model discloses a rainwater storage pond water inlet and outlet integrated combination system based on water level signals of a water accumulation point. The rainwater storage pond water inlet and outlet integrated combination system comprises a first water level gauge arranged at the water accumulation point and a storage pond connected with a municipal rainwater pipe network through a water inlet and outlet pipeline. The water inlet well on one side of the storage pond is connected with a water inlet and outlet pipeline to temporarily store incoming water; a second water level gauge, a water pump and a drainage pipe which is connected with the water pump and drains water to the water inlet well from the upper part of the water inlet well are arranged in the storage pond; the storage pond and the water inlet well are in control communication through a storage pond control valve; the first water level gauge, the second water level gauge, the storage pond control valve and the water pump are all connected with the control device; the control device controls opening and closing of the storage pond control valve and starting and stopping of the water pump according to information collected by the first water level gauge and the second water level gauge. The rainwater storage pond is accurately opened, reasonable reuse and intelligent control of water inlet and outlet pipes are achieved, and an accurate, efficient and compact water inlet and outlet system is provided.

The invention belongs to the technical field of dynamic monitoring of oil production engineering, and particularly relates to a method for analyzing and identifying inter-well connectivity based on microbial genome DNA (Deoxyribose Nucleic Acid). Comprising the following steps: acquiring liquid samples of a producing well and a water injection well and rock debris samples of a new drilled well in the same area and the same stratum as the producing well; carrying out microbial genome DNA analysis on the obtained sample to obtain dominant strain compositions of the oil producing well, the water injection well and the newly-drilled well; comparing the number of the dominant strains shared by the producing well and the water injection well and the number of the dominant strains shared by the producing well and the new drilling well, and judging the connectivity of the producing well and the water injection well according to a comparison result. The invention provides a novel inter-well connectivity identification method, which can effectively solve the problems that the water breakthrough direction of an oil production well is complicated and is difficult to identify clearly due to the influence of dominant channels, natural fractures, water injection dynamic fractures and other factors on a water injection development oil reservoir.

The utility model belongs to water supply and drainage technical field, a kind of stepped water fall well with high energy dissipation efficiency includes sinking well main body, the upper end of sinking well main body one side is equipped with inlet pipe, the lower end of sinking well main body other side is equipped with drain pipe, sinking well main body is in the stepped water tank of being provided with, each water tank is equipped with sinking basket respectively, sinking basket is equipped with the stone for carrying out energy dissipation to water, the bottom of each water tank and the bottom of sinking basket are all provided with downcomer, the lower side of each water tank is provided with water slope, for the water flow is guided to flow into next stage water tank, the utility makes the water flow that flows from high place gradually flows in water tank, and when flowing in each water tank, water flow is dissipated by the way of multiple impact stone in sinking basket, reduce the impact force generated when water flow falls from high place, and, since sinking basket and water tank are detachable, sinking basket in stone can be replaced after long time use of water fall well, so as to facilitate cleaning and maintenance to water fall well.

The invention discloses a quantitative evaluation method for the blockage degree of an oil-water well. The method specifically comprises the steps of 1, collecting data of a blocked well; 2, according to the data collected in the step 1, evaluating the blockage degree of a certain day; step 3, according to the blockage degree of a certain day obtained in the step 2, evaluating the blockage degree within the stage time; and 4, evaluating the blockage degree of the whole production stage according to the blockage degree in the stage time obtained in the step 3. The method solves the problem that the existing oil-water well blockage degree evaluation is high in cost and poor in accuracy.

The utility model discloses an oil depot drainage system, and relates to the field of drainage, and the oil depot drainage system specifically comprises a water collecting well, and a liquid level device is arranged in the water collecting well; a first valve is arranged on the first drainage pipe; a second valve is arranged on the second drainage pipe; the control device comprises a delay controller; the first drainage pipe and the second drainage pipe are connected with the side wall of the water collecting well. One end of the control device is connected with the liquid level device, and the other end is connected with the first valve and the second valve. According to the technical scheme, sewage can be discharged timely and reasonably.

The invention discloses a water injection induced crack early warning method based on an area water injection well network. The water injection induced crack early warning method comprises the following steps that reservoir ground stress characteristic parameters, rock mechanics parameters, oil reservoir development characteristic parameters and oil reservoir injection-production parameters are obtained; for the interior of the injection-production well group, an area water injection well network is adopted for deployment, and the opening critical pressure of the water injection induced crack in each injection-production connecting line direction in the well group is calculated; selecting the minimum value of the critical water injection pressure in each direction of the injection-production connecting line as early warning water injection pressure, and taking the corresponding direction as an early warning direction; calculating a single well water injection induced crack opening critical water injection intensity as an early warning water injection intensity; and single well water injection induced crack early warning is carried out. The problems that an existing water injection induced crack prediction result is inaccurate and poor in reliability are solved.

This invention relates to the improved claw-type drill bit system that has been designed for use especially in ground-drilling operations to determine the location and depth of reserves during mineral exploration, in drilling operations to analyze ground stability or rock properties, in drilling surface layers, in oil and natural gas exploration, and in water well drilling operations in hard soils and rocky areas. The invention, with its hardware elements and design structure, supports durability, minimizes the share of wear, and can operate for many more hours than the current situation.

The invention discloses an automatic coal bed gas water injection wellhead device, and belongs to the technical field of water injection wellhead devices. An automatic water injection well head device for coal bed gas comprises a water injection well body and a water inlet pipe fixedly connected to the side face, a speed adjusting assembly is movably installed on the water inlet pipe, and the water injection well head device is provided with the speed adjusting assembly to adjust the flow speed of liquid. The water inlet pipe is connected with the double-suction type water pump, when the water pump sucks water reversely, the height of the liquid level in the water injection outer pipe is reduced, the height of the plugging head assembly is reduced, and therefore segmented water injection at different heights or depths can be achieved conveniently. And when the sealing plate moves upwards, the rack drives the gear to rotate, so that the drainage pipe drives the crushing cutter to rotate, plugging pulverized coal at an outlet of the drainage pipe is conveniently crushed, and drainage dredging is achieved.