132 results about "Petroleum industry" patented technology

The invention discloses a petroleum industry personnel behavior safety video monitoring system based on artificial intelligence, and the system comprises a front-end equipment layer which is used for collecting physical environment data; the edge computing layer is deployed on a local server of a factory and is used for preprocessing and preliminarily analyzing the data acquired by the front-end equipment layer; the cloud analysis layer is used for carrying out deep analysis on the data uploaded by the edge calculation layer by utilizing deep learning and natural language processing technologies; the cloud analysis layer can integrate data from the front-end equipment layer, the edge computing layer and the cloud analysis layer; and the application service layer is used for presenting the result of the cloud analysis layer to a user in a user-friendly manner. According to the method, video spatio-temporal features are extracted through the CNN-BiLSTM fusion model, risk behaviors such as no helmet wearing and illegal operation are accurately identified, and the false alarm rate is reduced; the NLP analyzes the work order to construct the knowledge graph, the knowledge graph is matched with the video behavior event in a space-time manner, the risk score is dynamically evaluated, and the comprehensive early warning accuracy is improved.

The utility model relates to the technical field of oil industry gate valves, in particular to an oil industry gate valve with a wear-resistant strengthening structure, which comprises a valve casing, delivery pipes are welded on two sides of the valve casing, a blocking component is arranged on the inner side of the valve casing, a support rod is fixedly connected to the top end of the valve casing, and an electric cylinder is fixedly connected to the top end of the support rod through a mounting seat. The blocking assembly comprises a sealing ring, the sealing ring is fixedly bonded to the inner side of the valve shell, a gate plate is embedded in the inner side of the sealing ring, a water cavity is formed in the top of the inner side of the valve shell, mounting grooves are formed in the two sides of the bottom end of the water cavity, protection mechanisms are fixedly connected to the inner sides of the mounting grooves, and a filter screen is fixedly connected to the middle of the inner side of the conveying pipe. The filter screen, the inner side of the valve shell and the flashboard can be washed at the same time through water flow, in this way, the cleaning difficulty is lowered, the cleaning efficiency is improved, and the service life of the flashboard is prolonged.

The invention belongs to the technical field of recovery of floating oil in sewage tanks in the petroleum industry, and particularly relates to a pumping device for floating oil in a sewage tank and a using method. In a working state, the floating plate drives the device to float along with the height of a page, the driving motor is started, the driving motor drives the rolling wheel to rotate, floating oil attached to the rolling wheel flows into the oil storage tank through the penetrating opening through the scraping plate, recovery of the floating oil accumulated on the liquid level in the sewage tank is completed, and the device is not limited by fluctuation of the liquid level in the tank; the two floating plates can float along with the height of the liquid level, oil slick is forcibly sucked, and the device has the advantages of being simple in structure, small in equipment investment, good in oil collecting effect, capable of saving manpower, reducing labor intensity and reducing the dirty oil content of injected water and capable of providing qualified sewage for next-step sewage treatment.

The present application belongs to the technical field of automatic workover in oil production engineering of petroleum industry, and discloses a kind of auxiliary lifting device and lifting method of automatic operation oil pipe under pressure, device includes derrick, hydraulic clamp, manipulator, auxiliary lifting device, lifting seat and control system, lifting seat and hydraulic clamp are installed on derrick, auxiliary lifting device is installed on lifting seat, the upper portion of auxiliary lifting device is equipped with clamping structure, clamping sensor is equipped on clamping structure, lifting structure is connected on the both sides of auxiliary lifting device, low sensor, mid sensor and high sensor are arranged on lifting structure.The method is that control system completes automatic auxiliary lifting to pipe column according to sensor signal, and real-time monitoring lifting position, improve the reliability of operation, the whole process is automatically completed by control system, workers only need remote monitoring, without direct participation, exclude the security risk produced by human factor, reduce the generation of oil pipe drop, personnel injury accident.

The utility model relates to the technical field of pressure control in the petroleum industry, in particular to a constant pressure type multi-stage pressure relief protection skid device. According to the technical scheme, a first high-pressure T-shaped connector, a second high-pressure T-shaped connector and a third high-pressure T-shaped connector are installed between a high-pressure straight pipe and the outlet end of the high-pressure straight pipe, an outlet in the upper end of the first high-pressure T-shaped connector is connected with a first plug valve and a low-order safety valve, and an outlet in the upper end of the second high-pressure T-shaped connector is connected with a second plug valve and a middle-order safety valve. An outlet in the upper end of the third high-pressure T-shaped connector is connected with a third plug valve and a high-order safety valve, and the outlet ends of the low-order safety valve, the middle-order safety valve and the high-order safety valve are connected to a low-pressure straight pipe through an elbow assembly and a straight pipe assembly respectively. The utility model has the beneficial effects that gradient pressure protection is realized, and the problem of protection failure of a single safety valve is avoided; impact on the pipeline caused by sudden pressure drop is also prevented, and the service life of equipment is prolonged; the durability of the device is improved, the potential safety hazard is reduced, and the maintenance cost is reduced.

The invention relates to the technical field of petroleum pipes in the water and petroleum industry, in particular to a U-shaped thermos bottle type petroleum casing pipe for a geothermal well, which comprises an inner-layer casing pipe, an outer-layer casing pipe and a vacuum module. The inner-layer sleeve and the outer-layer sleeve are both of a hollow cylindrical structure, the outer-layer sleeve is connected with the inner-layer sleeve through two annular connecting pieces to form a vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a through hole and an NPT bolt, the NPT bolt is used for vacuumizing the vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a vacuum degree module, and the vacuum degree module is connected with the outer-layer sleeve. The vacuum degree module comprises a shell, an air bag, a sealing ring, a spring and a vacuum ruler and is used for monitoring the vacuum degree of the vacuum interlayer in real time. According to the thermos bottle type petroleum casing pipe for the U-shaped geothermal well, the design is similar to a thermos bottle, heat conduction can be effectively reduced, the heat preservation effect of the inner-layer casing pipe is improved, meanwhile, the monitoring module is arranged, the thermos bottle type petroleum casing pipe is suitable for the high-temperature geothermal environment, and the exploitation efficiency and safety of the geothermal well are improved.

The application relates to the field of drilling fluids in the petroleum industry, and discloses an amide polymer, which contains structural unit A, structural unit B, structural unit C and structural unit D; the structural unit A is a structural unit with the structure shown in formula (1); the structural unit B is a structural unit with the structure shown in formula (2); the structural unit C is a structural unit with the structure shown in formula (3); and the structural unit D is a structural unit with the structure shown in formula (4). The amide polymer has excellent temperature resistance and calcium resistance, and has excellent filtration reduction performance when applied to drilling fluids.

The utility model relates to a plug valve for blowout prevention, belong to petroleum industry drilling, well repairing technical field, including plug valve body and the ball valve switch of setting in the middle part of plug valve body, the outside wall of plug valve body is equipped with the clamping body, the clamping body sets up the top of ball valve switch to make the operator hand -held clamping body installs plug valve in the well mouth. The utility model discloses the clamping body on the outside wall of plug valve body sets up, the clamping body sets up the top of ball valve switch, namely, close to the upper part of plug valve body sets up, to make the operator hand -held clamping body installs plug valve in the well mouth, the installation of plug valve is convenient, avoids the smooth surface of the outside wall of plug valve body and makes the operator hand -held when easy to slip and causes the safety accident, provides the clear hand -held force point for plug valve, improves plug valve installation efficiency and solves the corresponding security risk simultaneously.

This article pertains to the petroleum industry, specifically relating to a method, device, and equipment for overflow risk early warning based on single-hole gas monitoring. The method includes: real-time collection of drilling data, including drill bit position, well depth, total hydrocarbon content, and drill string height; determining the drill bit position when the drill string is pulled up based on the collected drilling data; determining the location data of the risky well section and the location data of the first section to be monitored based on the drill bit position and single drill string length; determining the location data of a single connecting section based on the location data of the single connecting section and the risky well section; monitoring for single-hole gas anomalies based on total hydrocarbon content data obtained at the location of the first section to be monitored; and determining whether to send an overflow risk warning based on the single-hole gas anomaly. This article solves the problems of high cost and poor effectiveness in overflow risk monitoring during drilling.

The invention discloses a petroleum hydrocarbon viscosity prediction and uncertainty quantification method based on machine learning, which can improve the precision and adaptability of petroleum hydrocarbon pure component and mixture viscosity prediction, and realizes uncertainty quantification of a prediction result through a Delta method and conformal prediction. And a reliable support is provided for viscosity evaluation and risk control under variable working conditions in the petroleum industry.

The utility model discloses a metal winding wire of a petroleum sand prevention filter screen pipe, which comprises a first winding wire connecting edge, a second winding wire connecting edge, a third winding wire connecting edge, a fourth winding wire connecting edge, a fifth winding wire connecting edge, a sixth winding wire connecting edge and a seventh winding wire connecting edge, the second wire winding connecting edge and the third wire winding connecting edge are oppositely connected and arranged at the two ends of the first wire winding connecting edge, and the fourth wire winding connecting edge and the fifth wire winding connecting edge are connected to the other ends of the second wire winding connecting edge and the third wire winding connecting edge respectively. The other end of the fourth wire winding connecting edge and the other end of the fifth wire winding connecting edge incline inwards in the opposite direction and are connected with a sixth wire winding connecting edge and a seventh wire winding connecting edge respectively, and the other end of the sixth wire winding connecting edge and the other end of the seventh wire winding connecting edge incline inwards in the opposite direction and are connected to form a tip welding end. The filter is suitable for drilling filtration in the petroleum industry and the natural gas industry, has higher anti-clogging performance, and meets the operation requirement of high filtration capacity in the natural gas industry.

The utility model discloses a petroleum industry gate valve with a valve seat convenient to replace, which relates to the field of petroleum industry gate valves, and is characterized by comprising a valve body and a valve rod supporting part which are connected through a flange, a valve rod is arranged on the valve rod supporting part, and the bottom of the valve rod is connected with the valve seat through a quick release assembly. The quick-release assembly fixes the valve seat in a mode of first limiting and then fixing, and the quick-release assembly has the advantages that when the valve seat is damaged and needs to be detached, flange fixation between the valve body and the valve rod supporting part is removed, the valve rod supporting part is detached from the valve body, then the valve seat can be pulled out of the valve body, and then fixation of the quick-release assembly to the valve seat is removed; the damaged valve seat is detached, then a new valve seat is installed, the valve seat is installed in the mode that the valve seat is limited firstly and then fixed through the quick detaching assembly, the valve seat does not need to be frequently held by hands, more convenience is achieved, tools in the background technology do not need to be used, and the convenience degree of replacement of the valve seat is greatly improved.

The invention provides a bentonite-based metal catalyst for reducing viscosity of thickened oil while drilling as well as a preparation method and application of the bentonite-based metal catalyst, and belongs to the field of oilfield chemistry in the petroleum industry. The preparation method of the catalyst comprises the following steps: hydrating bentonite, dropwise adding a hydrophilic monomer aqueous solution, sequentially adding a reducing agent aqueous solution and an initiator aqueous solution, and reacting to obtain a polymer modified bentonite aqueous phase; dropwise adding a first transition metal ligand solution for reaction; and then adding a second transition metal ligand solution to react. The catalyst disclosed by the invention can be used for efficiently catalyzing and cracking the thickened oil while drilling, so that the efficient viscosity reduction of the thickened oil is realized, and meanwhile, the lasting efficient viscosity reduction effect of the thickened oil can be kept. Moreover, the catalyst and the drilling fluid have good compatibility, negative effects on wall fixing and chip carrying capacity of the drilling fluid are avoided, the catalyst can be blended into the water-based drilling fluid, and chip carrying efficiency, rheological stability and high-temperature adaptability are maintained or enhanced.

The invention belongs to the technical field of drilling fluid chemistry in the petroleum industry, and particularly relates to a high-temperature-resistant viscosity reducer as well as a preparation method and application thereof. The preparation method of the high-temperature-resistant viscosity reducer provided by the invention comprises the following steps: (1) adding vegetable oleic acid and polyethylene polyamine into a reactor, and reacting at a first temperature under the protection of inert gas to obtain a first intermediate; (2) reducing the temperature of the first intermediate to a second temperature, slowly adding anhydride, then heating to a third temperature, and continuously reacting to obtain a second intermediate; and (3) reducing the temperature of the second intermediate to room temperature, adding trimethylchlorosilane, reacting at a fourth temperature, and adding white oil for dilution after the reaction is finished, thereby obtaining the high-temperature-resistant viscosity reducer. The high-temperature-resistant viscosity reducer disclosed by the invention has an excellent temperature-resistant effect, and the viscosity reduction effect of the high-temperature-resistant viscosity reducer on an oil-based drilling fluid can still reach 20% or above after the high-temperature-resistant viscosity reducer is aged at 180 DEG C for 16 hours.

The application discloses a method for preparing copper-steel composite rods at low cost through a vacuum hot pressing furnace, a plurality of graphite holes are processed on a graphite plate, a stainless steel pipe and a copper rod are assembled in each graphite hole, vacuum hot pressing welding is carried out, and a copper-steel composite rod is obtained after cooling; the assembly is that the stainless steel pipe is placed into the graphite hole, the copper rod is placed into the stainless steel pipe, and a guide column with the same diameter as the copper rod is placed at the top end of the copper rod, and the guide column is coaxial with the axis of the copper rod. The method is characterized in that the graphite plate with a plurality of graphite holes is adopted, the stainless steel pipe and the copper rod are assembled into the graphite hole, then the stainless steel pipe and the copper rod are connected through vacuum hot pressing welding, the copper-steel composite rod with stable quality is obtained, the copper-steel composite rod can be prepared in large quantities and at low cost, and the copper-steel composite rod is suitable for preparing copper-steel composite rods required in the fields of military industry, petroleum industry, aerospace industry, ocean industry and nuclear industry.

The invention relates to the technical field of crude oil dehydration data processing in the petroleum industry, and discloses a crude oil electric dehydration high-voltage power supply capable of automatically switching waveforms according to loads and a method. The crude oil electric dehydration high-voltage power supply comprises a temperature sensor arranged on a crude oil dehydration tank, and a voltage sensor and a current sensor which are arranged at the load end of the crude oil dehydration tank; the high-voltage power supply is provided with a digital control unit, the digital control unit is connected with a high-voltage switch, the high-voltage switch is connected with a direct-current generator and a high-voltage pulse generator, the high-voltage pulse generator is connected with a water chain of the crude oil dehydration tank, and the direct-current generator is connected with an electrode of the crude oil dehydration tank. The conductivity of the crude oil or the emulsified liquid is calculated and corrected by combining the collected current, voltage and temperature data, and the digital control unit performs multi-loop control through the conductivity data. According to the invention, the output of alternating current, direct current, pulse and composite electric field can be realized, and the working waveform can be intelligently switched according to the emulsion load characteristic, so that the electric dehydration efficiency and the system energy efficiency are improved.

This invention relates to multiphase suspensions of at least one synthetic water-soluble polymer with a weight-average molecular weight greater than or equal to 1 million Daltons. The invention also relates to the use of such multiphase suspensions in industrial water treatment, municipal water treatment, enhanced oil recovery in mineral deposits, hydraulic fracturing, mining wastewater treatment, drilling operations in civil engineering, drilling operations in the petroleum industry, drilling operations in the natural gas industry, paper or paperboard manufacturing, agriculture, textiles, detergents, or cosmetics.

The application discloses a foam backflushing timing prediction method based on adaptive cycle division and deep learning, relates to the technical field of oil and gas production engineering in the petroleum industry, and comprises the following steps: S1, collecting dynamic data of gas well production in foam backflushing operation, and performing stage division of a foam backflushing cycle according to the dynamic data of gas well production; S2, sampling dynamic data of different foam backflushing stages to obtain positive and negative samples; S3, establishing a foam backflushing agent injection timing prediction model based on the positive and negative samples; and S4, inputting dynamic data of gas well production to be predicted into the foam backflushing agent injection timing prediction model to obtain a prediction result of the foam backflushing agent injection timing. The application solves defects of existing methods in dynamic adaptability, data feature mining and stage division strategies, thereby significantly improving the prediction accuracy and reliability of the foam backflushing agent injection timing, can intervene before liquid loading occurs in the gas well, improves production efficiency, and can timely improve the gas well productivity and improve economic benefits.

The invention relates to the technical field of underground operation in the petroleum industry, in particular to a temporary hole plugging device for fracturing, and aims at solving the problems that an existing temporary hole plugging device is poor in plugging effect and prone to falling off. The packaging structure comprises a packaging body and a rigid part, the rigid part is arranged in the packaging body, and filler is further arranged in the packaging body and has fluidity. According to the invention, the perforation hole is blocked by the rigid piece in the inclusion body, and the residual gap is blocked by the filler to adapt to the perforation hole with irregular shape, so that the inclusion body can better fill the perforation hole. Specifically, the wrapping body is a flexible part and can deform under the action of fluid pressure, so that the filler can fully fill the part, not blocked by the rigid part, of the perforation hole and can enter the perforation hole to enhance the firmness degree and prevent falling off. Therefore, the temporary hole plugging device for fracturing, provided by the invention, can be used for stably and reliably plugging perforation holes with irregular shapes.

The invention discloses a biological paraffin inhibitor composite strain culture system and a special formula for an oil field, and belongs to the field of petroleum microorganisms. The composite strain applied in the invention has good passage stability, and after 12 generations of passage, the paraffin reduction rate of the solid paraffin can be stabilized at 19.6%; and the wax reduction rate of fermentation at a shake flask level reaches 35-45%. The method for fermenting and degrading the paraffin is simple and easy to operate, low in culture medium cost and suitable for production and application in the petroleum industry.

The application provides a seamless steel pipe automatic drilling equipment and method, and relates to the technical field of petroleum industry. The equipment comprises a working unit, a first feeding unit and a discharging unit. The working unit comprises a supporting part, a drilling part and a drill rod part in sequence. The supporting part is used for supporting and conveying the oil pipe to be drilled. The drilling part is used for clamping the oil pipe to be drilled. The drill rod part is used for extending the drill rod into the oil pipe on the supporting part. The relative extrusion and rotation between the oil pipe and the drill rod are used to realize the drilling of the oil pipe. The first feeding unit and the discharging unit are respectively arranged on the two sides of the supporting part. The application provides a seamless steel pipe automatic drilling equipment and method. The traditional working mode is upgraded from manual work to full-automatic work. The whole process does not need manual participation, the labor intensity of the operator is reduced, the working efficiency is improved, and the working safety is enhanced.

This application provides a method, system, equipment, medium, and product for optimizing crude oil supply chain scheduling, relating to the field of petroleum industry chain optimization technology. The method involves: determining a target operations operator based on current state information; determining the target inventory level and target inventory penalty function for each node in the crude oil supply chain based on current inventory levels and the target operations operator; determining the objective function of a mathematical programming model using a preset oil transportation cost function and the target inventory penalty function; determining a production scheduling plan for the day based on current inventory levels and the objective function; executing the production scheduling plan for the day to obtain daily cost information; determining a reward function for the day based on the daily cost information; obtaining the daily reward function for each day within a preset time period; accumulating the daily reward functions within the preset time period to obtain the accumulated reward function; if the accumulated reward function value is not the maximum value, using a backpropagation algorithm to adjust the parameters to obtain an adjusted reinforcement learning layer.

The invention provides an anchoring and sealing back-inserting connector for fracturing and a using method, and belongs to the field of downhole tools for sealing in well drilling and completion in the petroleum industry, the connector comprises an anchoring and sealing part and an inserting and sealing part, and the anchoring and sealing part and the inserting and sealing part are both assembled on a pipe body. The anchoring and sealing part comprises a metal net-shaped cylinder and a limiting circular ring, a net-shaped groove is formed in the outer wall of the metal net-shaped cylinder, a vulcanized rubber block is vulcanized in the net-shaped groove, and tooth blocks which are downwards and obliquely implanted are arranged at the joints of net points of the net-shaped groove. After a tie-back barrel is inserted, the upper edge of the tie-back barrel and the anchoring and sealing part are limited, anchored and sealed through downward pressing. In the fracturing process, if upward pressure leakage occurs, the limiting ring on the lower portion can extrude the rubber ring upwards under the influence of pressure, the limiting ring extrudes the rubber ring obviously along with increase of the pressure, the rubber ring is stressed more strongly, and the sealing performance is more obvious.

This invention relates to the field of drilling in the petroleum industry, and discloses a gel polymer, its preparation method and application, and a water-based drilling fluid. The polymer contains structural units A, B, C, and D; structural unit A has the structure shown in formula (1); structural unit B has the structure shown in formula (2); structural unit C has the structure shown in formula (3); and structural unit D has the structure shown in formula (4). The gel polymer provided by this invention can achieve temperature-responsive expansion, and when applied to drilling fluid, it can effectively improve the sealing effect and aging performance of drilling fluid with large pores.

The invention discloses a sealing rubber material suitable for a low-temperature valve for the petroleum industry and a preparation method of the sealing rubber material, and belongs to the technical field of low-temperature valve sealing materials for the petroleum industry. The sealing rubber material suitable for the low-temperature valve for the petroleum industry comprises the following components in parts by weight: 100 parts of silicone rubber, 5-10 parts of perfluorodecane and 10-20 parts of micro-nano flexible graphite. The characteristic that the working temperature of the silicone rubber base is low is utilized, the working temperature of the silicone rubber base is further reduced by means of perfluorodecane, the sealing performance of the obtained material at the low temperature is enhanced by means of the micro-nano flexible graphite, and the advantages of reducing the working temperature and improving the sealing performance are both considered. Compared with a soft sealing material in the prior art, the sealing rubber material prepared by the invention has the advantage of wide low-temperature application range, is particularly suitable for the field of low-temperature valves for the petroleum industry, can work in a low-temperature environment of-80-0 DEG C, and has a wide application prospect.

This utility model relates to the field of wastewater adsorption and sedimentation technology, and discloses a combined petroleum wastewater adsorption and sedimentation mechanism, including a support frame. A water-carrying tank plate is fixedly connected to the top of the support frame, a trapezoidal plate is fixedly connected to the bottom of the water-carrying tank plate, a connecting pipe is fixedly connected to the bottom of the trapezoidal plate, a fixing plate is fixedly connected to the top of the water-carrying tank plate, and a first support plate is fixedly connected to the side wall of the fixing plate. Multiple adsorption cylinders are slidably connected inside the first support plate, and a rotating block is fixedly connected to the outer wall of each adsorption cylinder. In this utility model, pulling the limiting column disengages it from the empty tank plate and the rotating block, and rotating the adsorption cylinder drives the rotating block, which can pull the adsorption cylinder out of the first support plate. This solves the problem that replacing adsorption cylinders requires stopping the machine for disassembly, causing the treatment process to be interrupted, especially in the continuous production of the petroleum industry, which affects the overall wastewater treatment efficiency, and improves the convenience of the petroleum wastewater adsorption and sedimentation mechanism.

The invention discloses an oil removing agent as well as a preparation method and application thereof, and relates to the field of oil and gas field drilling environment protection in the petroleum industry. In order to simplify the production process of the degreaser and recycle the degreaser, a one-step method is adopted, fatty amine and 1, 3-propane sultone are subjected to sulfonation reaction, and the degreaser is synthesized. The oil removal rate of the oil removal agent reaches 96%, the oil removal agent can be dissolved or precipitated in a pH adjusting mode, recycling is achieved, the recovery rate of the oil removal agent reaches 50%, the oil removal agent can be recycled for more than five times, the oil removal rate can still reach 80% after the oil removal agent is recycled for the fifth time, and the economic benefits of production are effectively improved.

The utility model discloses a multi-layer continuous pipe, which relates to the technical field of petroleum industry, and one or more continuous pipes are placed in the outermost continuous pipe of the multi-layer continuous pipe. According to the multi-layer continuous pipe disclosed by the utility model, various different materials can be transported, and the efficiency is higher during underground operation.

The invention belongs to the technical field of downhole operation fracturing in the petroleum industry, and discloses an evaluation method for fracturing crack control transformation volume. Comprising the following steps: simulating to obtain fracture basic parameters, determining fracturing fluid efficiency eta, quantitatively evaluating the length of a half fracture formed by early-stage fracturing, evaluating a well control radius by applying a dynamic reserve method, performing plane analysis, implementing an interlayer unmodified area, and implementing a residual reserve distribution rule. The fracturing crack control transformation volume evaluation method is simple, reliable and easy to operate, the distribution rule of the remaining reserves can be effectively implemented, block scheme deployment and compilation are guided, and effective potential tapping of remaining resources is achieved.

This invention relates to the field of oilfield development technology in the petroleum industry, and proposes a segmented metal patching tool suitable for pressurized operations. It includes a multi-stage hydraulic assembly with internal and external hydraulic channels. A patching component is installed at each of the upper and lower ends of the multi-stage hydraulic assembly. The internal channel drives the two sets of patching components to connect downhole, while the external channel drives the two sets of patching components for expansion patching. This invention employs a segmented patching pipe design and an automatic downhole connection principle between the upper and lower patching pipe sections. While ensuring the tool's safety factor is not reduced, it improves the tool's applicability and provides convenient application conditions for the implementation of CCUS (Continuous Cornering System) old well remediation. It has significant economic and social benefits and enormous potential for widespread adoption.