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86 results about "Well drainage" patented technology
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Well drainage means drainage of agricultural lands by wells. Agricultural land is drained by pumped wells (vertical drainage) to improve the soils by controlling water table levels and soil salinity.
Combined sand drain drainage structure suitable for high slope and construction method of combined sand drain drainage structure
The invention provides a combined sand drain drainage structure suitable for a high slope. The combined well drainage structure comprises a row of vertical sand well structures arranged in the side slope along the slope surface line of the side slope and siphon drainage structures arranged at the bottom ends of the row of vertical sand well structures. The vertical sand well structure comprises a vertical well hole, a water permeable pipe and a gravel inverted filter layer, and the water permeable pipe is filled with gravel; the siphon drainage structure comprises a siphon water guide pipe, a horizontal drainage well structure and an inclined drainage pipe. Rainwater of the high slope is collected through the sand wells, the rainwater is collected into the horizontal drainage wells under the action of gravity, underground water collected by the horizontal drainage wells is drained from the drainage holes in the lowest end of the supporting structure through the siphon guide pipes, then negative pressure is generated in the horizontal drainage wells, and drainage of the vertical sand wells is further accelerated. The construction difficulty of the deep drainage structure of the high slope is reduced, and it is guaranteed that underground water enriched under the effects of rainfall, underground pipeline water leakage and the like can be drained in time and rapidly.
Owner:WUHAN SURVEYING GEOTECHN RES INST OF MCC
Drainage and gas production device and method for horizontal well for coalbed methane of coal mine area
PCT designated stage expiredWO2025097668A1Cleaning apparatusFluid removalMining engineeringHorizontal wells
A drainage and gas production device for a horizontal well for coalbed methane of a coal mine area, the device comprising a surface horizontal well and a downhole borehole section (6), wherein a horizontal section (4) of the surface horizontal well is in communication with the downhole borehole section (6), a communication point (7) of the horizontal section (4) of the surface horizontal well and the downhole borehole section (6) is located at an end A or a middle or an end B of the horizontal section (4) of the surface horizontal well; and the other end of the downhole borehole section (6) is connected to a gas-water-slag separation device (15) located in a downhole drill site (5).
Owner:HUAINAN MINING IND GRP +1
Method for optimizing drainage gas recovery process system of complex gas well
ActiveCN120524867AFluid removalDynamo-electric converter controlProcess engineeringEnvironmental engineering
The invention relates to the technical field of data reasoning, and discloses a complex gas well drainage gas recovery process system optimization method, which comprises the following steps: acquiring geological characteristic parameters and real-time production dynamic parameters of a gas well; identifying stable production constraint conditions of the gas well according to the geological characteristic parameters and the real-time production dynamic parameters; establishing an optimization target of a gas well drainage gas recovery process based on the stable production constraint condition; determining a critical liquid-carrying flow threshold value of the gas well according to the shaft accumulated liquid distribution pattern of the gas well; generating an optimal exhaust scheme of the gas injection speed and period in the gas well by taking the critical liquid-carrying flow threshold value and the optimization target as boundary conditions; according to the optimal exhaust scheme, the opening degree of a throttler in the gas well and the gas injection time sequence are adjusted; the optimization quality of the gas well drainage gas recovery process system can be improved.
Owner:SHAANXI HENGYU OIL & GAS ENG TECH SERVICE CO LTD
Production control method and system based on gas well multi-stage joint modeling
The invention provides a production control method and system based on gas well multi-stage joint modeling, and a dynamic self-adaptive drainage gas recovery decision system is constructed by fusing real-time monitoring data and historical production data. A coupling model set is designed according to the gas-water ratio, wellhead pressure and gas production rate characteristics of different production stages of a gas well, and recognition of the production stages and continuous prediction of the gas-water ratio are achieved. On the basis of dynamic feature fusion and implicit collaborative coding, stage-adaptive parameter configuration is generated, parameter space topology reconstruction and a multi-target game verification mechanism are introduced, and a closed-loop control link from data-driven modeling to physical verification optimization is formed through physical constraint embedding, Pareto optimal search and Nash equilibrium convergence. According to the gas well drainage gas recovery control method, gas well full-life-cycle self-adaptive regulation and control and multi-target collaborative optimization are achieved, the problems that in gas well drainage gas recovery, stage adaptability is poor, and multi-target conflicts exist are solved, the productivity is remarkably improved, and the operation and maintenance risk is reduced.
Owner:SICHUAN XUCHEN DIGITAL TECHNOLOGY CO LTD
Underground compressed air energy storage chamber surrounding rock drainage system and method
The invention provides an underground compressed air energy storage chamber surrounding rock drainage system and method.The underground compressed air energy storage chamber surrounding rock drainage system comprises an inner drainage structure arranged in a chamber and an outer drainage structure arranged on one side of the chamber, and the inner drainage structure comprises a first drainage pipe and a second drainage pipe which are arranged on the peripheral side of the chamber; a first water collecting cavity and a second water collecting cavity are formed in the lower side of the chamber, the first drainage pipe is communicated with the first water collecting cavity, the first water collecting cavity is communicated with the second water collecting cavity, a filtering structure is arranged between the first water collecting cavity and the second water collecting cavity, and a supporting structure is arranged in the chamber. According to the underground chamber, crack water and underground water can be collected and then drained, so that a good drainage effect can be achieved, permeated water can be drained through the water seepage and drainage layer, a good anti-seepage effect can be achieved, the crack water is prevented from corroding the steel lining sealing layer, and the safety of the chamber is guaranteed; the sliding plate can drive the supporting structure and the cleaning structure to slide.
Owner:SHANDONG TIANWU SHAPING TECH CO LTD
Drainage device for underground coal mine
The utility model relates to the technical field of mine drainage, in particular to an underground coal mine drainage device which comprises a mine base layer and further comprises a detection assembly, a drainage assembly and a drainage assembly. The sewage discharging assembly is arranged at the bottom of the inner cavity of the water sump and facilitates discharging sludge sinking to the bottom. According to the utility model, the KJ1158 hydrological dynamic observation system is utilized to monitor information such as flow, flow velocity and the like of each underground site in real time, and the KJ1137 mine hydrological dynamic monitoring and early warning system can trigger an alarm to remind, so that workers can respond quickly, and the working efficiency is improved; redundant accumulated water can be quickly drained through the drainage assembly; the accumulated water level height is monitored in real time through the detection assembly, and accumulated water level height data are visually displayed to workers, so that the data are collected and analyzed in a centralized manner, and equipment operation is convenient to manage and optimize; sludge sinking to the bottom of the water sump inner cavity can be discharged through the sewage discharging assembly, and therefore normal operation and efficient drainage of the mine water sump can be guaranteed.
Owner:HUTUBI COUNTY COAL DIVERSIFIED OPERATIONS CO LTD
Ecological slope protection structure
The utility model relates to the technical field of slope protection structures, in particular to an ecological slope protection structure. According to the technical scheme, the device comprises two sets of cross protection frames, each set of cross protection frame comprises a cross protection plate, a connecting table is arranged at the end corner position of one end of each cross protection plate, and a protection pier is arranged at the end corner position of the end, away from the connecting table, of each cross protection plate; a lower side plate frame and an upper side plate frame are arranged on the sides, close to each other, of the fender piers on the two sets of crossed protective frames correspondingly. The cross protection frame, the lower side plate frame and the upper side plate frame are integrally arranged in the shape of the inclined plane rhombus, so that the slope protection frame can be better matched with a sloping field, meanwhile, the rhombus structure can provide a better drainage effect, water retention on the slope surface can be reduced, landslide or soil erosion caused by accumulated water is avoided, and the slope protection effect is improved. Meanwhile, flexible adjustment can be achieved according to different terrains and gradients, different slope protection requirements are met, the self-locking performance and stability are high, external pressure and stress can be effectively dispersed, and slope landslide or collapse is prevented.
Owner:EZHOU WATER RESOURCES CONSTR DESIGN RES INST
A method for determining a gas well water drainage and gas production process
The present invention belongs to the technical field of oil and gas field development and relates to a method for determining a gas well drainage gas production process. Aiming at the problems that traditional methods rely on empirical judgment, lack quantitative analysis, and are difficult to accurately evaluate the applicability and effect of the process, the present invention collects the downhole string and production data of the gas well, calculates parameters such as the apparent velocities and densities of the gas phase and liquid phase; draws the inflow / outflow dynamic curve to judge whether the gas well can produce stably; then performs performance analysis on the preferred string, wellhead pressurization, gas lift, foam drainage, and plunger processes respectively to determine the lower limit of action of each process and unify the quantitative parameters; finally, a scoring and weighting system is customized, and a score is obtained through the comprehensive decision-making model for drainage gas production, and the process with the highest score is the optimal process. Compared with the existing methods, this method improves the scientificity and accuracy of process selection, helps to improve the gas well production efficiency and economic benefits, and reduces costs.
Owner:SOUTHWEST PETROLEUM UNIV +1
Coal slime deposition amount detection device for underground coal mine sump
A coal mine underground water sump coal slime deposition amount detection device belongs to the technical field of coal mine detection devices, can solve the problem that the coal slime deposition amount of an existing coal mine underground main water sump does not have a good dynamic detection means, and comprises a base, vertical rods are arranged at the two ends of the base, a transverse rod is arranged at the top ends of the vertical rods, and a graduated scale is arranged on the side surface of the transverse rod. A first fixed pulley, a second fixed pulley and a third fixed pulley are arranged at the two ends and the bottom of the transverse rod respectively, a winch is arranged on one side of the vertical rod, a steel wire rope is arranged on the winch, and one end of the steel wire rope sequentially penetrates through the first fixed pulley, the second fixed pulley and the third fixed pulley and then is connected with a falling block. By using the device, the siltation amount of the coal slime in the underground sump can be dynamically detected at any time, coal slime particles can be prevented from abrading a main drainage system and blocking a water suction opening of the main drainage pump, and the hidden danger endangering the safety of mine drainage is completely eradicated.
Owner:WANGZHUANG COAL MINE SHANXI LUAN ENVIRONMENT PROTECTION ENERGY SOURCE SWITCH
Airport ground well drainage system
ActiveCN224078337UArtificial islandsSewerage structuresProgrammable logic controllerEnvironmental engineering
The utility model relates to an airport ground well drainage system, which is characterized in that a water collecting pit is arranged at the bottom of a well pit of a ground well, and the drainage system comprises a drainage pump, a first liquid level sensor, a second liquid level sensor, a drainage hose, a one-way check valve, a drainage embedded part and a ground well PLC (Programmable Logic Controller) control box, the drainage pump, the first liquid level sensor and the second liquid level sensor are all electrically connected with the ground well PLC control box, the drainage pump is arranged in a sump and connected with the one-way check valve through a drainage hose, the one-way check valve is connected with the drainage embedded part through the drainage hose, and therefore a drainage main loop of a ground well is formed. And water in the ground well is discharged into a ground airport apron or a drainage pipe network through the main loop. The two liquid level sensors are adopted, liquid level monitoring and water level offside monitoring can be achieved, meanwhile, fault alarm of the drainage pump can be achieved, and the normal working state of the drainage pump is guaranteed.
Owner:CHINESE PEOPLES LIBERATION ARMY UNIT 93204
Method for treating room-pillar type goaf through grouting and fully mechanized coal mining and coal pillar recovery
The invention relates to the technical field of coal mining, in particular to a method for treating a room-and-pillar goaf through grouting and recycling coal pillars through fully mechanized mining, which comprises the following steps: forming a detection directional hole through a directional drilling technology, performing field detection on a distribution area of the room-and-pillar goaf, constructing a three-dimensional space model of the room-and-pillar goaf, and constructing a three-dimensional space model of the room-and-pillar goaf; gradually obtaining the range of the room-and-pillar goaf according to the boundary points of the room-and-pillar goaf detected by the plurality of detection directional holes; based on the range of the room-and-pillar goaf and the internal structure of the room-and-pillar goaf, the arrangement position, number and depth of drainage drill holes are obtained; based on the arrangement position, number and depth of the drainage drill holes, accumulated water in the goaf is introduced into a mine drainage system through a drainage pipe; grouting treatment is conducted on the room-pillar type goaf through the grouting drill holes; and after the working face is arranged according to the working face arrangement scheme, coal pillar recovery operation is carried out according to the formulated mining scheme.
Owner:CCTEG COAL MINING RES INST +1
Coalbed methane horizontal well reformation method based on controllable shock wave
The application discloses a coal bed gas horizontal well yield increasing method based on controllable shock waves, which comprises the following steps: S1, selecting a group of upward directional drilling construction sites in a horizontal well service underground roadway of a mine, and the directional drilling target positions are respectively coal seams opposite to a plurality of positions of a horizontal well perforation point away from the horizontal well; S2, drilling a hole at a target point A meters away, judging whether the hole is in a fracturing influence range and a horizontal well drainage influence range; if the hole target point is in the fracturing influence range, controllable shock wave construction is performed; if the hole target point is not in the fracturing influence range, construction is performed on other target points again until a target point in the fracturing influence range is found and the construction is stopped; S3, drilling and judgment are performed on each horizontal well perforation by using S2 until target points in the fracturing influence range are found for all the horizontal well perforations, and controllable shock wave construction is performed. The application has the beneficial effects of improving the yield of a coal bed gas well, further expanding a seepage channel and prolonging the production life of the coal bed gas well.
Owner:HUAINAN MINING IND GRP +3
Drain board
Owner:BEIJING CHENGJIAN YUANDONG CONSTR INVESTMENT GRP CO +1
Mining underground drainage channel
ActiveCN223215299UDrainageStationary filtering element filtersElectric machineryStructural engineering
The utility model relates to the technical field of mine drainage, in particular to a mining underground drainage channel which comprises a drainage pipe, a mounting frame is arranged outside the drainage pipe, a dredging assembly used for cleaning silt and collecting metallic minerals is arranged in the mounting frame, and a drainage pipe is arranged in the dredging assembly. The dredging assembly comprises a metal sensor arranged on the outer wall of the mounting frame, a conveying pipe is arranged in the mounting frame, a storage box is arranged at the other end of the conveying pipe, a fixing frame is arranged at the top of the mounting frame, a motor is arranged on the outer wall of the fixing frame, a screw rod is arranged at the output end of the motor, and a lantern ring is arranged on the outer wall of the screw rod; and two shifting rods are arranged on the outer wall of the lantern ring. According to the utility model, the silt at the corner of the drainage channel is dredged, the blocking probability is reduced, the silt containing minerals can be collected and stored, the subsequent screening is facilitated, and the mineral loss is reduced.
Owner:GEERMU QINGHUA MINING IND CO LTD
Valve well drainage device
The utility model relates to a valve well drainage device which comprises a pump body and a motor, an impeller assembly is arranged in the pump body, an output shaft of the motor extends into the pump body to be connected with the impeller assembly, the pump body is communicated with a water inlet pipe and a water outlet pipe, and the water inlet pipe is communicated to the bottom of a valve well through a drainage pipe. The filter assembly comprises a V-shaped pipe and a filter screen, the V-shaped pipe is communicated with the water inlet pipe, the filter screen is arranged in the V-shaped pipe, the bottom of the V-shaped pipe is communicated with a discharging pipe, water in the valve well is pumped out through the pump body, manual pumping is not needed, and time and labor are saved; wherein the drain pipe is communicated with the bottom of the channel valve well, when the pump body is used for draining water, large-particle impurities in sewage are filtered through the filter screen, and the large-particle impurities fall into the discharge pipe, so that the pump body is prevented from being blocked by the large-particle impurities; the impeller assembly rotates in the pump body, so that a turbulent flow effect can be achieved on water flow, and the situation that the pump body is blocked due to the fact that sludge is accumulated in the pump body is avoided.
Owner:GUANGZHOU NANSHA XINAO GAS CO LTD
Gas well spiral degassing and sand prevention device
The present application relates to the technical field of oilfield development, and particularly relates to a gas well drainage spiral degassing composite sand prevention device, which comprises a sand prevention oil well pump, a lower oil pipe section connected to the lower end of the sand prevention oil well pump, a special-shaped variable buckle connected to the lower end of the lower oil pipe section, outer and inner connecting parts provided at the upper and lower ends of the special-shaped variable buckle, an outer connecting part at the lower end of the special-shaped variable buckle connected to a sand settling tail pipe assembly, the sand settling tail pipe assembly comprising at least one sand settling pipe and a bottom plug connected to the bottom end, and a central pipe assembly coaxially arranged in the sand settling pipe. The uppermost sand settling pipe is connected to a wire-wound screen pipe with a gap of 0.2 mm, thereby performing the first filtration on the formation water, and the special-shaped variable buckle is connected to a laser slotted sand control screen pipe with a gap of 0.15 mm, thereby performing the second filtration on the formation water, effectively preventing the sand particles with different particle sizes from entering the sand prevention oil well pump, and avoiding the sand sticking of the pump cylinder and the failure of the valve.
Owner:BEIJING WARBURG ENERGY DEV LTD
Gas recovery well drainage device and method in recovery process of water-containing gas reservoir well
The invention provides a drainage device and method for a gas recovery well in the recovery process of a water-containing gas reservoir well. The drainage device comprises a first channel, a second channel and a drainage device, the second channel is used for injecting gas; wherein the first channel is an inner cavity of the oil pipe; the second channel is an inner cavity of the oil-string casing; the first channel and the second channel are communicated and connected; two circulation channels are established on the basis of an original gas production pipe column, a gas lift circulation drainage channel is formed through combination, gas lift drainage of different scales of drainage amounts is achieved according to different working conditions, the well drainage effect is improved, and particularly the technical problem of large-displacement drainage of a horizontal well is economically solved by converting a horizontal gas production well into a drainage well.
Owner:PETROCHINA CO LTD
Sandy soil engineering seepage control water storage and drainage blanket with bagged sand wells
The utility model discloses a sandy soil engineering seepage control water storage and drainage blanket with bagged sand wells, and belongs to the technical field of novel geosynthetic materials. Comprising a sandy soil engineering seepage control water storage and drainage blanket, a balance weight cage installed below the sandy soil engineering seepage control water storage and drainage blanket, and a funnel-shaped bagged sand well penetrating through the balance weight cage and tightly connected with the sandy soil engineering seepage control water storage and drainage blanket. And the upper part of the funnel-shaped bagged sand well penetrates through the sandy soil engineering seepage control water storage and drainage blanket. When the water head is smaller than the distance that the funnel-shaped bagged sand well is higher than the sandy soil engineering seepage-control water storage and drainage blanket, the sandy soil engineering seepage-control water storage and drainage blanket stores water; otherwise, the funnel-shaped bagged sand well is preferentially used for draining water, meanwhile, the sandy soil engineering seepage control water storage and drainage blanket assists in draining water, and the funnel-shaped bagged sand well guides water into the deeper position of the soil body, so that the rainwater flows into the soil body more naturally, and meanwhile, the influence on the roadbed or the building foundation is reduced.
Owner:CHANGAN UNIV
Mine water and mud discharging method
The invention provides a mine drainage and sludge discharge method, belongs to the technical field of mine pollution discharge, and solves the problems of high safety risk, low efficiency, long cleaning time, high difficulty, incomplete cleaning and continuous reduction of the volumes of a sedimentation tank and a water sump in the existing manual bagging and sludge cleaning. The system comprises sedimentation tanks, a sludge tank, a desliming filter press, water cabins, a vacuum pump and a matched sludge storage tank, sewage sequentially and automatically flows to the four sedimentation tanks, and the sewage continuously flows to the two water cabins after being full of the sewage; the slurry in the sedimentation tank and the water sump is pumped into a cavity of the vacuum slurry storage tank, the slurry in the tank is pressed and conveyed to the sludge tank, and the slurry is conveyed to the desliming filter press for mud-water separation operation. The device used by the invention is good in operation stability, reduces the labor intensity of workers, improves the drainage and sludge discharge efficiency of the mine, and has the characteristic of being capable of adapting to complex working conditions of the mine.
Owner:JINCHUAN GROUP NICKEL COBALT CO LTD
Controllable shock wave-based coalbed methane horizontal well stimulation method
PCT designated stageWO2026076856A1Fluid removalDirectional drillingHorizontal wellsClassical mechanics
A controllable shock wave-based coalbed methane horizontal well stimulation method, comprising: S1: selecting a group of upward directional drilling construction sites in a downhole roadway of a horizontal well service mine, directional drilling target positions being respectively coalbeds (3) directly facing horizontal well perforations (2) at multiple positions from a horizontal well; S2: performing construction drilling on a target at A meters, and determining whether the drilling target enters a fracturing influence range and whether the drilling target is within a horizontal well drainage influence range; if the drilling target is within the fracturing influence range, performing controllable shock wave construction; and if the drilling target is not within the fracturing influence range, re-constructing other target positions until a target position within the fracturing influence range is found, and then stopping; and S3, executing S2, including construction drilling and determination, for each horizontal well perforation until target positions within the fracturing influence range corresponding to all the horizontal well perforations are found, and performing controllable shock wave construction. By means of the method, the production of a coalbed methane well is increased, a seepage channel is further expanded, and the production life of the coalbed methane well is prolonged.
Owner:HUAINAN MINING IND GRP +3
Composite catch basin drainage system based on permeable asphalt concrete
The utility model relates to the technical field of urban road drainage, in particular to a composite catch basin drainage system based on permeable asphalt concrete. The drainage system comprises an asphalt concrete surface layer (8), a base layer (9) is arranged below the asphalt concrete surface layer (8), a subbase layer (10) is arranged below the base layer (9), and rainwater branch pipes (6) are arranged below the subbase layer (10); a prefabricated concrete catch basin main body (2) is arranged on the road, and a plurality of groups of circular drainage holes (3) are formed in the prefabricated concrete catch basin main body (2); a permeable asphalt concrete layer (1) is arranged above the precast concrete catch basin main body (2); a water collecting cavity (4) is arranged below the prefabricated concrete catch basin main body (2); the water collecting cavity (4) is connected with a rainwater branch pipe (6); and a C15 concrete cushion layer (5) is arranged below the water collecting cavity (4).
Owner:GANSU TIANCHENG ROAD & BRIDGE SURVEY & DESIGN CO LTD
Deep foundation pit water collecting well drainage structure and construction method
This invention relates to the field of foundation pit dewatering technology, and in particular to a drainage structure and construction method for deep foundation pit sump wells. The drainage structure includes a deep well, a sump, and a sand-free ash pipe. The sump is located at the top of the deep well. The bottom end of the sand-free ash pipe extends to the bottom of the deep well, and the top end extends into the sump and protrudes from the bottom inner wall of the sump. An outer pipe is fixedly fitted around the sand-free ash pipe, located below the sump and above half the length of the sand-free ash pipe. Multiple sedimentation chambers of progressively decreasing height are provided between the outer pipe and the sand-free ash pipe. The drainage structure proposed in this invention can promptly discharge water from the deep well, thus preventing the deep well from becoming full and causing water accumulation in the deep foundation pit that is difficult to infiltrate. Furthermore, the discharged water contains less sediment, reducing the filtration and purification pressure on the municipal pipe network, thereby indirectly reducing the energy consumed in municipal water supply and drainage processes, achieving energy conservation and emission reduction.
Owner:无锡北大建筑工程有限公司
Optimization method of drainage and gas production process system in complex gas wells
The present invention relates to the field of data reasoning technology, and discloses a method for optimizing a drainage and gas production process system for a complex gas well. The method comprises: obtaining geological characteristic parameters and real-time production dynamic parameters of the gas well; identifying stable production constraints of the gas well based on the geological characteristic parameters and the real-time production dynamic parameters; establishing an optimization target for the drainage and gas production process for the gas well based on the stable production constraints; determining a critical liquid-carrying flow rate threshold of the gas well through the distribution morphology of liquid accumulation in the wellbore of the gas well; generating an optimal exhaust scheme for the gas injection speed and period in the gas well using the critical liquid-carrying flow rate threshold and the optimization target as boundary conditions; and adjusting the throttle opening and the gas injection timing in the gas well according to the optimal exhaust scheme. The present invention can improve the optimization quality of the drainage and gas production process system for the gas well.
Owner:SHAANXI HENGYU OIL & GAS ENG TECH SERVICE CO LTD
A system for fracturing and producing water circulation and treatment of deep coalbed methane wells in coal mines
ActiveCN119461740BWater/sewage treatment by centrifugal separationWaste water treatment from quariesWater useWater discharge
The invention relates to a fracturing and produced water circulation and treatment system for deep coalbed methane wells in coal mine fields, comprising a recycling unit, an oil removal tank and a biochemical treatment unit. The recycling unit comprises a mine water treatment unit and a plurality of well water treatment units connected in series in sequence; the mine water treatment unit comprises a static sedimentation tank and a fracturing water tank connected in sequence, the mine water discharged from the coal seam tunnel is discharged into the static sedimentation tank, and then discharged into the fracturing water tank after treatment, and can be used as fracturing water for the first coalbed methane well; the well water treatment unit comprises a reverse drainage tank, a static sedimentation tank and a fracturing water tank connected in sequence, the discharged water of the coalbed methane well is treated by the reverse drainage tank and the static sedimentation tank in sequence, and then discharged into the fracturing water tank, and can be used as fracturing water for the next coalbed methane well; the discharge water pipe of the last coalbed methane well is connected to a static sedimentation tank, an oil removal tank and a biochemical treatment unit in sequence.
Owner:GENERAL PROSPECTING INSTITUTE OF CHINA NATIONAL ADMINISTRATION OF COAL GEOLOGY +2
Device special for water drainage and gas recovery of oil and gas well
The invention belongs to the technical field of oil and gas wells, and discloses an oil and gas well drainage and gas recovery special device which comprises a gas inlet assembly, the top end of the gas inlet assembly fixedly communicates with a power assembly, a sorting assembly is arranged below the rear end of the power assembly, and the top end of the power assembly communicates with the middle of the bottom end of the sorting assembly. And drainage and exhaust assemblies are arranged on the left side and the right side of the power assembly correspondingly, a linkage rod is fixedly connected between the top ends of the two drainage and exhaust assemblies in a sleeving mode, and the right sides of the top ends of the two drainage and exhaust assemblies communicate with the sorting assembly. By utilizing the gas production process of the device, inputting oil gas into the power assembly and matching the power assembly with the drainage and exhaust assembly, power conversion is achieved, automatic water pumping is completed, the whole process can be automatically completed, water flow can be automatically pumped and discharged, different devices do not need to be arranged for drainage and exhaust, and the device is simple in structure, convenient to use and high in efficiency. Unsmooth exhaust is avoided, and the drainage efficiency is improved.
Owner:NANYANG HUAMEI GASOLINEEUM EQUIP
Coal-bed gas well drainage and mining device
The utility model relates to the technical field of natural gas collection, in particular to a coal-bed gas well drainage and mining device which comprises a water pumping pipe, a filter screen, a dredging assembly, a filter cylinder and a water separator, the filter screen and the dredging assembly are arranged at the end, located in an outer sleeve, of the water pumping pipe, and the filter cylinder is arranged at the end, located on the ground, of the water pumping pipe. Comprising a dredging barrel connected with a water pumping pipe, a displacement component arranged in the dredging barrel, and a clearing component arranged on the displacement component. The pulverized coal leaked by the screen mesh can be collected by the screen drum, the screen drum is located on the ground and is convenient to overhaul and replace, the collected pulverized coal can be utilized, and waste is reduced.
Owner:SHAANXI YANCHANG PETROLEUM GRP
Shale gas well pressure drainage system establishing method and device and medium
The invention provides a shale gas well after-pressure drainage system establishment method and device and a medium, and relates to the technical field of shale gas well drainage and mining, and the shale gas well after-pressure drainage system establishment method comprises the steps that on the basis of target parameters of a simulated shale gas well, a typical well group is selected; and based on the drainage parameters of the typical well group, a drainage system after pressure drainage is established, and the drainage system after pressure drainage comprises a soaking time determination system and an oil nozzle replacement system. According to the method, sand control, pressure control and the optimal test flow-back rate are taken as targets, and a liquid drainage system, including a soaking time system and an oil nozzle replacement system, suitable for the block after pressure is established, so that the accuracy of soaking time and oil nozzle replacement is improved, the problems of fuzzy consideration and poor applicability in an existing system are solved, the flow-back rate of a proppant can be effectively reduced, and the production efficiency is improved. A good flowback effect can be achieved, and the flow conductivity of the crack is guaranteed. And meanwhile, liquid drainage and sand production can be effectively avoided, and the productivity is improved to the maximum extent.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
A large-scale well sinking and drainage sinking centralized control system
The utility model discloses a large -scale sinking well drainage sinking centralized control system, and sinking well foundation structure includes well wall, multiple first partition wall and multiple second partition wall of being located in well wall, to separate the space surrounded by well wall into multiple well holes, first partition wall sets up along first direction, and second partition wall sets up along second direction, and first direction and second direction form certain angle, control system includes multiple row of slag main pipe, and row of slag main pipe is located in first partition wall and / or second partition wall, and one end extends to sand trap, multiple water supply main pipe, and water supply main pipe is located in first partition wall and / or second partition wall, and one end is connected water supply device, wherein, at least one in adjacent two peripheral well holes is equipped with sand pumping device, and the internal well hole is equipped with sand pumping device, and sand pumping device includes water supply small pipe and row of slag small pipe, and multiple water supply small pipes are connected with one water supply main pipe correspondingly, and multiple row of slag small pipes are connected with one row of slag main pipe correspondingly, and have communication state and barrier state respectively.
Owner:ROAD & BRIDGE INT CO LTD +1
Hongu-shaped mine drainage pipeline connector convenient for dredging and dredging method
The invention discloses a red-mine drainage pipeline connector convenient to dredge for a mine and a dredging method, and relates to the technical field of underground drainage of coal mines, the red-mine drainage pipeline connector comprises a water inlet pipe and a water outlet pipe, and at least two water outlets are formed in the pipe wall of the water inlet pipe; the water outlet pipe is fixedly sleeved outside the water inlet pipe, so that an annular overflowing space is formed between the outer wall of the water inlet pipe and the inner wall of the water outlet pipe, and a connecting pipe communicated with the annular overflowing space is arranged on the side wall of the water outlet pipe. The problems that in the prior art, due to the fact that a traditional mine drainage pipeline connecting structure is single in function and lacks efficient self-cleaning capacity, blockage is prone to occurring when slag-containing water is treated, manual shutdown and disassembly are dependent in the desilting process, and efficiency is low are solved. The device has the advantages that the device is provided with a mechanical scraping and high-pressure hydraulic flushing dual self-cleaning mechanism, efficient and automatic desilting of the filtering unit is achieved, the maintenance efficiency is improved, continuous and stable operation of a drainage system is guaranteed, and the device is suitable for the coal mining environment.
Owner:NANJING SHUANGJING ELECTRICAL
Mine red intelligent automatic drainage system for mine and working method
The invention discloses a red-mine intelligent automatic drainage system for a mine and a working method, and relates to the technical field of mine drainage. The red-mine intelligent automatic drainage system comprises a pipeline and a filtering mechanism integrated on the pipeline; the pipeline is formed by connecting a plurality of sections of water pipes, and the filtering mechanism comprises a metal filter cartridge, a cleaning assembly and a pressure relief channel which are arranged in the water pipe; the cleaning assembly is connected with the filter cartridge and is driven by water flow pressure; an inlet of the pressure relief channel is communicated with the interior of the filter cartridge, and on-off is controlled by axial movement of the filter cartridge. The problems that in a traditional mine drainage system in the prior art, a filter screen is prone to being blocked due to solid particles in sewage, cleaning and maintenance are difficult, efficiency is low, and equipment is prone to being damaged are solved. The device has the advantages that automatic cleaning and intelligent pressure relief of the filter cartridge are achieved through hydraulic driving, blockage is effectively avoided, and the automation degree and operation reliability of a drainage system are improved.
Owner:NANJING SHUANGJING ELECTRICAL