157 results about "Production string" patented technology

The invention relates to the technical field of natural gas well exploitation, in particular to a water drainage, sand pumping and plug removal device for a power-free gas production pipe column and a using method. According to the technical scheme, the water inlet end of the lower portion of a nozzle is connected with a power water inlet formed in the outer wall of a pump body, a center pipe is arranged at the lower end of the nozzle, the water outlet end of the upper portion of the nozzle is communicated with a formation liquid inlet cavity, an expansion rubber barrel is arranged on the lower side of the pump body, and an upper pressure transmission hole is formed between the expansion rubber barrel and the center pipe; a slip rubber sleeve is arranged on the lower side of the pump body, a slip piece is arranged on the outer side of the slip rubber sleeve, a lower pressure transmission hole is formed between the slip rubber sleeve and the central pipe, and a formation liquid suction inlet is formed in the lower end of the pump body. A washing pipe is arranged at the bottom of the central pipe, and a sand suspending nozzle is arranged at the bottom of the washing pipe. The device has the beneficial effects that under the condition that a gas production pipe column is not moved, a continuous oil pipe is put into an inner cavity of the gas production pipe column to drive the device to pump sand, the sand pumping and plug removal requirements special for a natural gas well are met, and the well control safety and environmental protection problems of the natural gas well are avoided.

The invention relates to a compressed air energy storage horizontal well high-frequency injection and production pipe column and a well completion method, the injection and production pipe column is sequentially connected with an underground combined sealing device, an underground annulus flow limiting device and an underground safety valve through oil pipes from bottom to top, and the underground combined sealing device is formed by connecting a preset working barrel and a sealing working barrel in an inserted mode. A sealing insertion barrel seals a sealing insertion barrel sealing cavity of the preset lower outer barrel, a sealing assembly seals a sealing piece sealing cavity of the preset lower outer barrel, and the underground annulus flow limiting device is provided with a leather cup and a center pipe. And the flow limiting plates of the staggered converging flow channels are fixed in the flow limiting plate mounting grooves in the pipe wall of the central pipe, and a seat sealing hole and a seat sealing boosting hole are formed in the pipe wall without the flow limiting plate mounting grooves. The injection-production tubular column provided by the invention has a reverse well flushing function, scales and deposited wax in an oil pipe are cleaned through reverse circulation of well flushing fluid with a cleaning function, maintenance without moving the tubular column is realized, the conventional operation cost and time are reduced, and the working efficiency of a gas storage is improved.

The invention relates to a compressed air energy storage straight inclined shaft high-frequency injection and production string and a well completion method.The injection and production string is sequentially connected with an underground combined sealing device, an underground annulus flow limiting device and an underground safety valve through oil pipes from bottom to top, and the underground combined sealing device is formed by connecting a preset working barrel and a sealing working barrel in an inserted mode; a sealing insertion barrel seals a sealing insertion barrel sealing cavity of the preset lower outer barrel, a sealing assembly seals a sealing piece sealing cavity of the preset lower outer barrel, and the underground annulus flow limiting device is provided with a leather cup and a center pipe. And the flow limiting plates of the staggered converging flow channels are fixed in the flow limiting plate mounting grooves in the pipe wall of the central pipe, and a seat sealing hole and a seat sealing boosting hole are formed in the pipe wall without the flow limiting plate mounting grooves. The injection-production tubular column provided by the invention has a reverse well flushing function, scales and deposited wax in an oil pipe are cleaned through reverse circulation of well flushing fluid with a cleaning function, maintenance without moving the tubular column is realized, the conventional operation cost and time are reduced, and the working efficiency of a gas storage is improved.

The invention discloses a production sliding sleeve, a production tubular column and a production method for a high-temperature gas well of an offshore oilfield. The technical problems that opening and closing control of the production sliding sleeve is tedious, and the adaptability of the production tubular column is poor are solved. The production sliding sleeve comprises a sliding sleeve body of a cylinder structure; the upper joint is arranged at the top of the sliding sleeve main body; the production hole is formed in the sliding sleeve main body; the control cylinder is arranged in the sliding sleeve main body in a sliding manner; the opening hole is formed in the control cylinder; the opening part is used for controlling the sliding sleeve main body to move downwards and enabling the opening hole to be aligned with the production hole; and the closing part is used for controlling the sliding sleeve main body to move upwards and enabling the opening hole and the production hole to be staggered. The structure of the produced sliding sleeve is optimized, rapid and convenient opening and closing control of the produced sliding sleeve is achieved, limitation of well types and well deviation is avoided, the use adaptability is improved, the production method is simpler, and the operation convenience and the operation time efficiency can be improved.

The invention relates to the technical field of oil and gas field development, in particular to an ultra-deep gas well production string multi-mode leakage simulation experiment device and method. According to the technical scheme, the outer side of a shaft temperature and pressure coupling simulation system is connected with a reservoir gas supply simulation system, the middle of the shaft temperature and pressure coupling simulation system is provided with a multi-mode leakage simulation assembly, the lower end of a production oil pipe is connected with a reservoir-shaft coupling connector, and the upper portion of one side of a layered sand filling seepage tank of the reservoir gas supply simulation system is connected with a confining pressure loading unit through a pipeline; the lower portion of the layered sand filling seepage tank is connected with a reservoir fluid supply unit, and the outlet end of the layered sand filling seepage tank is connected with a reservoir-shaft coupling connector through a pipeline. The experimental device has the beneficial effects that the experimental device for coupling the reservoir and the shaft is constructed, and the multi-mode leakage simulation assembly is adopted to realize body perforation leakage simulation and screw thread sealing failure simulation, so that the simulation of the ultra-deep gas well under complex working conditions is realized, and a scientific basis and a technical support are provided for leakage prevention and control of a production string of the ultra-deep gas well.

The water controlling and oil stabilizing device comprises a Tesla valve body fixedly arranged between an upper connector and a lower connector, a Tesla flow channel is formed in the outer wall of the Tesla valve body, and the outer wall of the Tesla valve body is sleeved with an outer barrel used for sealing the Tesla flow channel; the Tesla valve body is provided with a fluid through hole which is communicated with the upper end of the Tesla flow channel and a central flow channel of the Tesla valve body; a sand control pipe is fixedly arranged between the outer barrel and the lower connector, the lower end of the Tesla flow channel is communicated with an annular space among the outer barrel, the sand control pipe and the Tesla valve body, and a fluid channel communicated with the annular space and the outer space of the sand control pipe is arranged on the sand control pipe. By adopting the Tesla flow channel, the retarding effect of the Tesla flow channel on high water content is greater than that of low water content, so that the water content of a total product in an oil pipe is indirectly reduced, and low-cost control of the water content of the product is realized.

The invention relates to a production string leakage positioning method. The method comprises the steps that an initial pressure stable value of an oil sleeve annulus and a pressure fluctuation value of the oil sleeve annulus are obtained; calculating a pressure fluctuation threshold value of the oil jacket annulus according to the initial pressure stable value and the sensor monitoring error; the pressure fluctuation value is compared with a pressure fluctuation threshold value, and whether a new leakage point appears or not is judged; if no new leakage point appears, the depth of the leakage point is calculated according to the U-shaped pipe pressure balance principle, and a positioning result is obtained; and operating oil pressure fluctuation based on a positioning result to obtain an oil pressure fluctuation calculation value, and comparing the oil pressure fluctuation calculation value with an actually-monitored oil pressure fluctuation monitoring value to judge the positioning reliability. According to the method, the leakage point position is determined and the positioning result is verified by judging the state of the leakage point of the production pipe column in advance, so that the positioning precision is improved, the leakage pressure rising phenomenon of the production pipe column is effectively controlled, and the working efficiency is improved.

The present invention addresses to a method of removing scale from the DHSV of the oil production string aiming at maintaining the production of the wells and thus avoiding the loss of production. First, a neutralizing solution is placed in the service line, before pumping the scale removing solution through the string to act on the DHSV. Next, the acid is pumped into the production string to react with the calcium carbonate scale. After the time for the dissolution of the scale inside the DHSV, the well is opened for production by the service line. The spent acid is mixed with the neutralizing solution inside the service line, reducing its corrosiveness in relation to the service line, contributing to its preservation.

The present invention discloses an oil well water control production string assembly and a method for using the same, which solves the technical problems of low filling efficiency of oil wells and difficulty in achieving liquid production at the end of production. The device includes a central pipe, multiple bypass isolation packers, and a water control production assembly. Each water control production assembly includes multiple double-layer screen sleeves and multiple water control production short sections. Each water control production short section includes an outer casing, a sealing short section, an AICD valve, and a circulation sleeve. The sealing short section, the AICD valve, and the circulation sleeve are connected in sequence and coaxially located inside the outer casing. An annular flow channel is formed between the sealing short section, the AICD valve, the circulation sleeve, and the outer casing. The sealing short section is used to seal the annular flow channel away from the side of the circulation sleeve. The circulation sleeve is provided with multiple circulation holes, and a control unit for controlling the simultaneous opening and closing of multiple circulation holes is provided inside the circulation sleeve. The present invention can increase the return flow rate of the filling liquid, improve the filling efficiency, and achieve liquid production.

The invention relates to the technical field of petroleum separate recovery, in particular to an under-pump interactive intelligent separate recovery system and an implementation method thereof. The method comprises the steps that firstly, at least one bottom-hole regulator packing assembly, an electric energy interaction receiving end and a releasing anchor are sequentially arranged from bottom to top through a tubular column; secondly, after a wellhead is pressed and a packer is set, all production layers are packed; the wellhead continues to be pressurized, the releasing anchor conducts releasing anchoring to achieve anchoring of the production allocation tubular column, then the releasing anchor conducts releasing disengaging to achieve hanging of the production allocation tubular column, and at the moment, the releasing anchor is pulled out so that the tubular column can be released; thirdly, the electric energy interaction transmitting end, the electric submersible pump and the oil pipe telescopic adjuster are sequentially connected from bottom to top; when the production tubular column is slowly lowered and the lowering position approaches to the butt joint position of the electric energy interaction transmitting end and the electric energy interaction receiving end, a wellhead oil pipe telescopic adjuster is adjusted through a ground controller, so that a wellhead oil pipe has the well completion length, and meanwhile, the hanging load of the pump hanging tubular column is controlled to meet the axial load capable of being borne by the electric submersible pump.

The present application relates to the technical field of deep well natural gas exploitation, and particularly relates to an oil and foam removal separation device and a use method. The device comprises an inertial separator and a cyclone sand remover. The inertial separator comprises an inertial chamber, a conical tube and a gas distribution cone. The conical tube is located in the inertial chamber, the uphole section of the production string penetrates the bottom plate of the inertial chamber and is fixedly connected with the small end of the conical tube. The tip of the gas distribution cone is inserted into the large end of the conical tube, and there is a gap between the conical surface of the gas distribution cone and the inner wall of the conical tube. The other end of the gas distribution cone is provided with a connecting part which is fixedly connected to the top plate of the inertial chamber. The gas inlet pipe of the cyclone sand remover penetrates the top plate and is connected to the side of the connecting part which is towards the inside of the gas distribution cone. The device can avoid the rock and soil debris from entering the cyclone sand remover, thereby avoiding the impact damage of the rock and soil debris to the cyclone sand remover, and can also realize the continuous exploitation and separation of the deep well raw gas.

The application provides a wellbore safety experiment device and method for electric heating in-situ exploitation of oil shale, and the wellbore safety experiment device comprises a thermal insulation layer, a simulated injection-production assembly arranged outside the thermal insulation layer, and oil shale raw rock, a simulated wellbore assembly, a simulated production pipe column assembly and a first stress collection assembly arranged in the thermal insulation layer. The sealed cavity is heated by an electric heater, heat is transmitted to the oil shale raw rock through the oil pipe, the casing and the closed wellbore, the cracked product of the oil shale raw rock after being heated and cracked flows into the oil pipe through the product channel, the cracked product in the oil pipe is collected through the simulated injection-production assembly, the temperature in the oil pipe is collected through the first temperature sensor, the stress borne by the casing and the oil pipe at different positions is collected in real time through the first stress collection assembly, the real downhole in-situ exploitation process is simulated, the safety of the casing and the oil pipe can be evaluated in advance before downhole exploitation, and the safety and reliability of the casing and the oil pipe during downhole exploitation can be ensured.

A tubing isolation valve configured to permit lowering thereof downhole and installation in an existing pump seating nipple at a distal end of a production string. An elongate mandrel having at least 2 ports is slidably positioned in a hollow seal sub. A portion of the resulting assembly is positionable via a landing tool within the pump seating nipple. The mandrel is slidably moveable within the seal sub and pump seating nipple, from a first open position where fluids can be pumped from the wellbore via a pump fluidly connected to the landing tool, to a second closed position where fluids are isolated from the production tubing. Configurations of and methods of installing and operating the isolation valve when for example removing a pump from the well, and for removing the isolation valve completely from pump seating nipple and wellbore if desired, are further disclosed.

The invention relates to an oil well intelligent separate production system based on flow wave coding control and an implementation method.The oil well intelligent separate production system based on flow wave coding control comprises a plurality of intelligent separate production devices and packers which are alternately arranged in the axial direction of an oil well, and the intelligent separate production devices and the packers are connected through production pipe columns; the production pipe column is connected with an oil conveying pipeline, and the oil conveying pipeline is provided with a flow wave generator used for generating flow fluctuation of a certain rule. The flow generator is adopted to generate the regular flow waves, the valve opening degree of the intelligent separate recovery device is wirelessly controlled through the regular flow waves, allocation is performed according to the water outlet condition of each oil layer, the opening degree of the bottom-hole regulator corresponding to each production layer is controllably adjusted, and therefore fine adjustment and control of the liquid production capacity are achieved, the construction process is simple, and the cost is low. The working intensity is reduced, the construction cost of an oil well is reduced, and the crude oil exploitation efficiency is improved.

The invention discloses a linkage type double-layer control underground intelligent device, and relates to the technical field of oil production well layered control devices, and the linkage type double-layer control underground intelligent device comprises a mechanical part and an electric control part; the mechanical part comprises an upper connector, an outer sleeve, a flow dividing body, an outer connector and an inner connector which are sequentially connected from top to bottom. An upper liquid inlet hole and a lower liquid inlet hole are horizontally formed in the flow divider, and a flow divider outer axial through hole is vertically formed in the flow divider; the lower liquid inlet hole is communicated with the space between the outer joint and the inner joint; a sealing pipe is installed between the upper connector and the flow dividing body in the outer sleeve, a vertical electric driving device is installed in the sealing pipe, the bottom end of the vertical electric driving device is connected with a piston, a piston lower axial blind hole with a downward opening is coaxially formed in the piston, and a piston liquid inlet through hole communicated with the piston lower axial blind hole is formed in the side wall of the piston in the radial direction. The single intelligent device can control the on-off states of the two production layers at the same time, production pipe columns can be simplified, and the construction cost is reduced.

The present invention provides an integral load display back connection tool and its usage method. The inner wall of the tail end of the upper joint is threadedly connected to the outer wall of the head end of the central tube. The outer wall of the tail end of the central tube is threadedly connected to the inner wall of the head end of the load display elastic claw. The seal is sleeved on the lower outer wall of the central tube and is located above the load display elastic claw. Slots are evenly formed on the side wall of the load display elastic claw. A boss is formed in the middle of the outer wall of the load display elastic claw. The boss generates radial pressure contraction through inclined plane extrusion. When the boss reaches the groove of the sand settling packer sealing cylinder, it will automatically pop out and cooperate with it. The inner diameter of the back connection tool is consistent with that of the upper completion sand control string above, which provides convenience and a larger size option for the lowering of water injection tools and other production string tools, and is beneficial to the improvement of the water injection volume in water injection operations and the oil production volume in the production link.

The present invention discloses an intelligent tracer full-contact flow-around downhole control system. The downhole control system comprises a hollow cylinder formed by a base pipe and an outer pipe; a circular tracer mounting plate is provided in the annulus of the hollow cylinder, and oil-soluble tracers and water-soluble tracers are arranged on the tracer mounting plate, and the oil-soluble tracers and water-soluble tracers are alternately arranged along the axial direction of the hollow cylinder; a plurality of circumferential and axial slit holes are provided on the wall of the outer pipe; an inflow through hole is provided at one end of the base pipe. When the downhole control system of the present invention is applied, the tracer is installed in the production tubing, and the tracer is gradually released along with the production fluid. The production of the monitoring well or different production layers is determined by detecting the tracer content. The intelligent tracer full-contact flow-around downhole control system of the present invention can realize tracer monitoring of oil and gas wells or production monitoring of different outputs or different well sections, dynamic monitoring of oil reservoir production, and evaluation of reservoir transformation effects.

The present invention discloses an integrated system for heavy oil injection and production by using a small oil pipe to launch and salvage an electric pump, comprising an outer heat injection string and an inner production string, wherein the production string comprises a small oil pipe, an electric submersible pump connector, and an inverted electric submersible pump from top to bottom, and the electric submersible pump connector is provided with a second guide flow hole. The present application involves less ground operation equipment, high operation efficiency, and saves operation resources and costs; a small oil pipe is selected as the output fluid output channel to avoid fluid immersion and scouring in the annulus between the inner production string and the outer heat injection string, thereby protecting the thermal insulation performance of the insulated oil pipe and the insulation performance of the cable, and reducing the risk of failure; the electric submersible pump unit adopts an inverted pump design, and the cable is directly connected to the electric submersible pump motor after passing through the upper production packer, reducing the risk of cable crushing and improving the operating stability of the electric submersible pump in highly deviated wells; the small oil pipe has a strong launching and salvaging capability, and can realize launching and salvaging of the electric submersible pump in highly deviated wells and horizontal wells.

The invention relates to the technical field of oil pipe cutting, and discloses an anchoring shoe type production pipe column inner cutting tool which comprises a shell, an anchoring assembly, an unfolding assembly, a rotating assembly and a tool bit assembly. The cutter head assembly comprises a cutter disc, a central gear and a plurality of cutting knife mechanisms which are uniformly distributed on the circumference, each cutting knife mechanism comprises a cutter and a planetary gear, the rotating assembly comprises a rotating motor, a spiral spline cylinder and a driving cylinder, the unfolding assembly comprises an unfolding motor, an unfolding screw rod, an unfolding seat and a spiral spline shaft, and the anchoring assembly comprises an anchoring driving mechanism and two anchoring mechanisms. The anchoring mechanism comprises an anchoring cylinder and a plurality of anchoring pieces which are evenly distributed in the circumferential direction. Each anchoring piece comprises a fixed part, a movable part and an anchoring shoe. The anchoring shoe type cutting tool in the production pipe column is compact in structure, mechanical cutting operation of a seriously-scaled oil pipe of a small-pipe-diameter oil well can be achieved, and the problem that the cutting process is unstable due to mechanical shaking can be effectively solved.

The invention relates to a three-dimensional heterogeneous formation water control oil extraction multi-parameter synchronous simulation experiment device which comprises a device body, a plug, a production pipe column and a sensor unit. The device body is of a coaxial multi-layer nested structure, a plurality of independent simulation units are constructed in an internal annular sand filling area through replaceable sieve pore partition plates, and heterogeneous stratum reconstruction of fluid communication and sand body isolation is achieved. The production pipe column adopts a modular water control short section series connection structure, a replaceable fluid sensitive valve and a tracer agent storage cabin are integrated, and performance evaluation and fluid traceability of multiple types of water control tools are achieved; the sensor unit synchronously acquires outlet, wall surface and radial gradient pressure through three-dimensional arrangement of mandrels with various lengths, and realizes multi-dimensional data collaborative analysis in combination with flow and water content monitoring. The problems that an existing device is difficult to restore complex fluid channeling physical characteristics and is single in monitoring dimension are solved, full-process high-fidelity simulation from stratum seepage to tool water control is achieved, and key technical support is provided for water control strategy optimization.

A gravel pack production string component of a production string used for a gravel pack operation may include a body having a wall that forms a cavity, and also may include a gravel load disposed around an outer surface of the wall of the body. The gravel pack production string component may also include a gravel containment apparatus that is configured to secure the gravel load against the outer surface of the wall of the body as the gravel pack production string component is inserted into a wellbore. The gravel pack production string component may further include a release mechanism that is configured to release the gravel load from the gravel containment apparatus after the gravel pack production string component is positioned within the wellbore for the gravel pack operation and when the release mechanism interacts with a release agent.

The present application relates to a production string for oil development and a use method, in particular to a multi-layer real-time separate layer measurement and control safety production string for offshore oilfield. The production string comprises an electric pump overhang cylinder, an electric pump unit, an electric pump cable, a signal cable, a safety valve, a cable through packer, a hydraulic transmission joint, a check valve, a hydraulic drainage device, a plurality of compression type packers, a plurality of measurement and control devices, a tubing, a plug, and a pressure transmission pipeline. The production string has the advantages of realizing the multi-layer real-time separate layer measurement and control function of the electric pump lifting well in the offshore oilfield, improving the utilization efficiency of the oil well, overcoming the problem that the large-scale electric pump lifting well in the offshore application cannot realize the hanging of the separate layer string and the setting of the compression type packer to realize the separate layer, and has a wide application range.

The invention discloses a calculation and optimization method for test parameters in different gas injection and halogen discharge modes. The method comprises the following steps: 1) analyzing data such as old cavity geology, salt mining and sonar, reversely analyzing cavity characteristics, and predicting sediment volume, interface and gap form; 2) establishing an injection-production string friction calculation model, establishing a communicated well group sediment penetration calculation model, and performing calculation to complete geologic model construction of a cavity and calculation simulation of three kinds of gas injection and brine discharge; and 3) inclined stratum information analysis and cavity modeling, inclined stratum gas injection and halogen discharge simulation and scheme optimization. According to the invention, a cavity utilization scheme is provided for optimizing the salt cavity with waste storage potential, and the purposes of improving the bittern discharging efficiency, optimizing the bittern discharging process and reducing the production cost can be achieved.

This invention relates to a smart stratified injection-production string for carbon dioxide injection, comprising a first tubing and a second tubing connected by a backwash valve or a release tool. A hydraulic feedback pump is installed on the first tubing, and several packers are installed at intervals on the second tubing. A smart control switch tool is installed between two adjacent packers, each corresponding to an oil layer. An anchoring tool is also installed on the second tubing. This invention enables stratified injection, well shut-in, well release, and stratified production of carbon dioxide in any one or more layers without moving the injection-production string. This effectively improves the effective utilization rate of carbon dioxide, the degree of oil layer utilization, and the injection-production conversion efficiency, thereby increasing injection-production efficiency and oil recovery rate, reducing well workover work, well occupation time, and well cleaning and well layer contamination, and lowering operating costs.

The invention discloses an unconventional natural gas horizontal well sectional synchronous injection and production energy supplement replacement method, and relates to the technical field of unconventional natural gas exploitation, which comprises the following steps: after perforation fracturing is performed on a horizontal section sleeve of an unconventional natural gas horizontal well, a plurality of packers are used for dividing the horizontal section sleeve into a plurality of horizontal packing sections; the side wall of each horizontal packing section comprises a perforation hole and an artificial fracturing crack network communicated with the perforation hole; the horizontal packing sections are divided into a plurality of gas injection sections and a plurality of gas production sections, the gas injection sections are sequentially connected through gas injection pipe columns, and the gas production sections are sequentially connected through gas production pipe columns; the gas injection sections and the gas production sections are arranged at intervals; carbon dioxide gas is injected into the multiple gas injection sections so that the carbon dioxide gas can replace and displace the methane gas through the artificial fracturing fracture network; and the methane gas obtained through replacement and displacement is extracted through the multiple gas extraction sections. The technical problem that in the prior art, the recovery efficiency improvement range of the unconventional natural gas reservoir is limited is solved.

The application relates to a recoverable adjustable layered injection-production pipe column for offshore thermal recovery wells and a use method thereof, wherein the injection-production pipe column comprises a plurality of pipe column assemblies connected in sequence from top to bottom, packers, a tail-end tubing and a bottom plug; each pipe column assembly comprises a first tubing, a prefabricated working barrel, an adjustable injection-production core, a second tubing and a reverse circulation production valve; the upper end of the prefabricated working barrel is connected with the first tubing, and the lower end thereof is connected with the upper end of the second tubing; the lower end of the second tubing is connected with the reverse circulation production valve; the adjustable injection-production core is arranged in the prefabricated working barrel; the first tubing in each pipe column assembly is connected with a packer; the first tubing of the uppermost pipe column assembly is connected with a wellhead of a wellbore; the bottom of the reverse circulation production valve in the lowermost pipe column assembly is connected with the tail-end tubing, and the bottom plug is arranged at the bottom of the tail-end tubing; wherein the prefabricated working barrel and the adjustable injection-production core cooperate to guide part of steam injected from the wellhead into a stratum.

The present application relates to a kind of bridge plug with self-sealing capability, including setting structure, bridge plug body and rupture disc structure, setting structure is arranged in the upper end of bridge plug body, and setting mechanism can move downward along the axial direction of bridge plug body, the bottom end of bridge plug body is equipped with rupture disc structure, and rupture disc structure realizes the self-sealing of bridge plug.The present application realizes bridge plug self-sealing and rapid unsealing, effectively solves the problems of wellbore plugging and rapid unsealing when production string is run in production, has the advantages of fast sealing establishment, unsealing, high sealing performance, convenient operation, safety, reliability and good economy.

The application discloses a cable-through packer setting auxiliary tool, which comprises an upper joint, a sealing ball, a ball seat and a lower joint, the upper joint is sequentially connected with an outer protection pipe and the lower joint, the ball seat is fixed in the outer protection pipe through a constant-pressure shear pin, and the sealing ball is arranged between a limiting plate in the outer protection pipe and the ball seat; flow grooves are arranged in the limiting plate, the outer protection pipe, the ball seat and the lower joint, and the sealing ball is a soluble metal ball; and the cable-through packer setting auxiliary tool is connected in a production pipe string below the cable-through packer. The cable-through packer setting auxiliary tool is connected in the production pipe string through the upper joint and the lower joint, and the connection is simple, convenient to operate and in line with offshore well control requirements. After well completion, if immediate production is needed, the cable-through packer connected in the production pipe string can be directly set by pressing the well mouth, the setting process and setting construction time of the cable-through packer are reduced and shortened, the time of the marine platform occupied by the cable-through packer setting construction is saved, the construction efficiency is improved, and the production cost is reduced.

The invention relates to an electric pump and gas lift combined lifting separate production pipe column which comprises an upper production pipe column body used for oil production through electric pump lifting and / or oil production through gas lift production. The upper production pipe column is connected with the lower partial production pipe column through the underground communication controller, and the lower partial production pipe column is used for dividing an oil layer where the lower partial production pipe column is located into production layers, collecting production information of the production layers and sending the collected production information to the ground system through the underground communication controller. The ground system can make a corresponding mining quantity instruction according to the mining information; the underground communication controller is used for sending a mining quantity instruction to the lower mining pipe column and supplying power to the lower mining pipe column, and the lower mining pipe column is further used for controlling the mining quantity of each production layer according to the mining quantity instruction issued by the underground communication controller. The aims of exerting the productivity of the oil well to a large extent and improving the overall development effect of the oil well are achieved, and then the productivity of the oil well is fully exerted.

A valve system controls flow into a downhole production string, and which includes a downhole valve with a port formed in a sidewall of a production string disposed in a wellbore, and a sleeve that is slidable along the production string to block or allow flow through the port. An actuator assembly exerts a sliding force onto the sleeve, and is made up of multiple actuators arranged along an outer surface of the production string. Each actuator has an electrically powered motor and a stem connected to the motor. An opposite end of each stem connects to an end of the sleeve. Energizing the motors causes linear movement of the stems and connected sleeve to open and close the valve.