Intelligent rubber cylinder type plunger for shaft and using method

Abstract

The invention discloses a shaft intelligent rubber cylinder type plunger and a using method, the plunger is put into a gas well, data of acceleration, temperature and pressure in the gas well is collected through data collection equipment and is transmitted to a controller, the controller controls a driving device to drive a pulling rubber cylinder action connecting piece to move, and therefore a sealing rubber cylinder is driven to deform; the plunger is driven to move under the action of air pressure, and water drainage and gas production of a gas well are achieved. Therefore, the position and the operation state of the plunger in a shaft are judged through pressure, temperature and acceleration, under the condition that a liquid column is high, the controller controls the driving device to move, gas is further continuously generated in a channel between the sealing rubber barrel and an oil pipe and a gas well to drive the plunger to move upwards, and water drainage and gas production of the gas well are achieved. Under the condition that a liquid column is low, the sealing rubber barrel is kept in an initial state, namely, the sealing rubber barrel does not deform, gas collection can be achieved through the gap between the oil pipe and the plunger, and the intelligent plunger can solve the problems existing in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of gas field exploitation and relates to a wellbore intelligent rubber-coated plunger and a use method thereof. Background Art

[0002] The plunger gas lift process is a drainage and gas production technology method that uses the energy of the gas well itself to discharge the liquid from the wellbore. This technology uses the plunger as a mechanical interface between gas and liquid, and uses the gas produced by the gas well to push the plunger to move up and down periodically in the oil pipe, thereby periodically lifting the liquid produced by the formation to the ground and producing gas. As the gas-liquid interface, the plunger can effectively prevent the gas from rising and the liquid from falling back, reduce the "slippage" effect of the liquid running from the bottom of the well to the wellhead, and greatly improve the efficiency of gas lifting liquid. This process is mainly suitable for gas wells with a certain production capacity and a small daily water production. The operation process of the plunger is an operation cycle from closing the well to opening the well. When the well is closed, the plunger falls freely in the oil pipe, passes through the liquid column and falls back to the base under the well.

[0003] Traditional plunger drainage gas production is mainly composed of mechanical structures, and the well is opened and closed by the wellhead control device to control the up and down operation of the plunger in the wellbore. When the well is opened for production, the gas well produces more liquid in stages, especially horizontal wells, at this time, a higher liquid column will be generated in the wellbore. At this time, the well is closed and the plunger reaches the bottom of the well. When the well is opened again, the upper liquid column is too high, which may cause the mechanical plunger to be unable to move upward, affecting the drainage effect of the plunger gas lift process. Data investigation shows that there are currently several examples of intelligent plungers. An intelligent plunger for drainage and gas production (CN213953570U) provides a drainage and gas production intelligent plunger that can move downward with little resistance and is easy to fix as a whole for sealing through a mechanism design, but it cannot perform intelligent liquid drainage; an intelligent variable-diameter plunger for drainage and gas production (CN113236190B) adjusts the falling position of the plunger underground through a variable-diameter design and a unique braking design, avoids the installation of an underground locking device, and performs plunger lifting for liquid drainage, but cannot achieve intelligent liquid lifting; an intelligent plunger for drainage and gas production (CN215927343U) achieves braking of the plunger through structural design, so that the plunger stops at a specified liquid level depth to achieve the purpose of quantitative drainage, but it has a low degree of intelligence and cannot perform real-time monitoring. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the plunger cannot operate due to too high a liquid column and the plunger has poor operating efficiency due to too low a liquid column, and to provide a wellbore intelligent rubber cartridge plunger and a method for using it.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a wellbore intelligent rubber cartridge plunger, comprising a plunger with a hollow structure, wherein a controller and a power supply device are installed inside the plunger; one end of the plunger is packaged with a sealing rubber cartridge, and a rubber cartridge action connector is arranged on the end surface, wherein the rubber cartridge action connector is connected to the sealing rubber cartridge;

[0007] A driving device and a data acquisition device for acquiring acceleration, temperature and pressure are also provided inside the plunger. The driving device passes through the end face of the plunger and is connected to the rubber cylinder action connector. The data acquisition device, the driving device and the controller are all connected to the power supply device. The data acquisition device and the driving device are all connected to the controller.

[0008] Preferably, a support sleeve is installed at the axial end of the plunger close to the rubber sleeve action connector, and a fishing neck is embedded in the support sleeve.

[0009] Preferably, a boss structure is provided on the circumference of the fishing neck.

[0010] Preferably, the driving device comprises a reduction motor and a power screw, the power screw is connected to the rubber cartridge action connector, and the other end of the power screw is connected to the reduction motor;

[0011] The controller and the power supply device are both connected to the reduction motor.

[0012] Preferably, the data acquisition device and the driving reduction motor are both connected to the controller via a communication data line.

[0013] Preferably, a sealing ring and a plane bearing are provided between the outer wall surface of the dynamic screw and the inner wall surface of the plunger.

[0014] Preferably, there are a plurality of the sealing rings and a plurality of the plane bearings.

[0015] Preferably, the data acquisition device comprises an acceleration sensor, a temperature sensor and a pressure sensor, and the controller and the power supply device are connected to the acceleration sensor, the temperature sensor and the pressure sensor respectively.

[0016] Preferably, the plunger is made of non-metallic material.

[0017] The present invention provides a method for using an underground intelligent rubber cartridge plunger, comprising the following steps:

[0018] The power supply device supplies power to the data acquisition device, the driving device and the controller. The data acquisition device collects data of acceleration, temperature and pressure in the gas well and transmits the data to the controller;

[0019] The controller controls the movement of the driving device, and the driving device pulls the rubber cylinder to move the connecting piece, thereby causing the sealing rubber cylinder to deform, and driving the plunger to move under the action of air pressure to achieve drainage and gas production of the gas well.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention proposes a wellbore intelligent rubber cylinder plunger, which adopts a mechatronics design. The plunger is put into a gas well, and the acceleration, temperature and pressure data in the gas well are collected through a data acquisition device, and the data is transmitted to a controller. The controller controls the driving device to drive the rubber cylinder action connector to move, thereby driving the sealing rubber cylinder to deform, and driving the plunger to move under the action of air pressure to achieve drainage and gas production of the gas well. Therefore, the present invention determines the position and operating state of the plunger in the wellbore by pressure, temperature and acceleration. When the liquid column is high, the controller controls the driving device to move, further opens the channel between the sealing rubber cylinder and the oil pipe, and the gas well continuously produces gas to drive the plunger to move upward, thereby achieving drainage and gas production of the gas well. When the liquid column is low, the sealing rubber cylinder maintains its initial state, that is, it does not deform, and the gap between the oil pipe and the plunger can achieve gas collection, that is, the intelligent plunger proposed by the present invention can solve the problem that the plunger cannot operate due to excessively high liquid columns and the operation efficiency is poor due to excessively low liquid columns in the prior art.

[0022] Furthermore, the salvage neck can facilitate the salvage of the salvage tool when the smart rubber cartridge plunger is stuck or severely worn and cannot move upward.

[0023] Furthermore, a boss structure is provided in the circumferential direction of the fishing neck to facilitate the grasping of the fishing neck.

[0024] Furthermore, the sealing ring is provided to prevent water from being injected into the plunger to affect the operation of the plunger when the plunger is working. The plunger is easily damaged by collision during the up and down movement of the plunger, so a plane bearing is provided inside the plunger.

[0025] Furthermore, the plunger 4 is made of non-metallic material, which is not prone to corrosion and is durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a structural diagram of the downhole intelligent plunger of the present invention.

[0028] Figure 2The present invention is a flow chart of the method for using the intelligent rubber cartridge plunger.

[0029] Figure 3 It is a schematic diagram of the operation control principle diagram of the intelligent rubber cartridge plunger of the present invention.

[0030] Among them: 2-controller, 4-plunger, 6-sealing ring, 7-plane bearing, 8-reduction motor, 10-power supply equipment, 11-acceleration sensor, 12-temperature sensor, 13-pressure sensor, 14-fishing neck, 15-support sleeve, 16-rubber barrel action connector, 17-sealing rubber barrel, 18-action screw. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0038] The present invention proposes a downhole intelligent rubber cartridge plunger, such as Figure 1 As shown, it includes a controller 2, a plunger 4, a sealing ring 6, a plane bearing 7, a reduction motor 8, a power supply device 10, an acceleration sensor 11, a temperature sensor 12, a pressure sensor 13, a salvage neck 14, a support sleeve 15, a rubber cylinder action connector 16, a sealing rubber barrel 17 and an action screw 18.

[0039] Example 1

[0040] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0041] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0042] The position and operation state of the plunger 4 in the wellbore are determined by pressure, temperature and acceleration. When the liquid column is high, the controller 2 controls the driving device to move, further opening the channel between the sealing rubber tube 17 and the oil pipe, and the gas well continuously produces gas to drive the plunger 4 upward, thereby achieving drainage and gas production of the gas well. When the liquid column is low, the sealing rubber tube 17 maintains its initial state, that is, it does not deform, and the gap between the oil pipe and the plunger 4 can achieve gas collection.

[0043] Example 2

[0044] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0045] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0046] A support sleeve 15 is installed at the axial end of the plunger 4 close to the rubber cartridge action connector 16, and a salvage neck 14 is embedded in the support sleeve 15. The salvage neck 14 can facilitate salvage with salvage tools when the smart rubber cartridge plunger 4 is stuck or severely worn and cannot move upward.

[0047] Example 3

[0048] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0049] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0050] A support sleeve 15 is installed at the end of the plunger 4 axially close to the rubber cartridge action connector 16, and a fishing neck 14 is embedded in the support sleeve 15. The setting of the fishing neck 14 can facilitate the fishing with a fishing tool when the smart rubber cartridge plunger 4 is stuck or severely worn and cannot move upward. The circumferential boss structure of the fishing neck 14 is provided to facilitate the grabbing of the fishing neck 14.

[0051] Example 4

[0052] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0053] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0054] The driving device includes a reduction motor 8 and a power screw 18, the power screw 18 is connected to the rubber cylinder action connector 16, and the other end of the power screw 18 is connected to the reduction motor 8;

[0055] The controller 2 and the power supply device 10 are both connected to the reduction motor 8. When the data acquisition device collects data and transmits it to the controller 2, the controller 2 can control the reduction motor 8 to move according to demand.

[0056] Example 5

[0057] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0058] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0059] The driving device includes a reduction motor 8 and a power screw 18, the power screw 18 is connected to the rubber cylinder action connector 16, and the other end of the power screw 18 is connected to the reduction motor 8;

[0060] The controller 2 and the power supply device 10 are both connected to the reduction motor 8. When the data acquisition device collects data and transmits it to the controller 2, the controller 2 can control the reduction motor 8 to move according to demand.

[0061] The data acquisition device and the driving reduction motor 8 are both connected to the controller 2 via a communication data line 9 .

[0062] Example 6

[0063] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0064] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0065] A sealing ring 6 and a plane bearing 7 are provided between the outer wall surface of the dynamic screw 18 and the inner wall surface of the plunger 4. The sealing ring 6 is provided to prevent water from being injected into the plunger 4 and affecting the operation of the plunger 4 when the plunger 4 is working. The plunger 4 is easily damaged by collision during the up and down movement of the plunger 4, so a plane bearing 7 is provided inside it.

[0066] Example 7

[0067] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0068] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0069] A sealing ring 6 and a plane bearing 7 are provided between the outer wall surface of the dynamic screw 18 and the inner wall surface of the plunger 4. The sealing ring 6 is provided to prevent water from being injected into the plunger 4 and affecting the operation of the plunger 4. The plunger 4 is easily damaged by collision during the up and down movement of the plunger 4, so a plane bearing 7 is provided inside it. There are several sealing rings 6 and plane bearings 7, which play a better sealing and supporting role.

[0070] Example 8

[0071] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0072] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0073] The data acquisition device includes an acceleration sensor 11, a temperature sensor 12 and a pressure sensor 13, and the controller 2 and the power supply device 10 are connected to the acceleration sensor 11, the temperature sensor 12 and the pressure sensor 13 respectively.

[0074] Example 9

[0075] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0076] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0077] The plunger 4 is made of non-metallic material, which is not easy to corrode and durable.

[0078] Example 10

[0079] A controller 2 and a power supply device 10 are installed inside the hollow plunger 4; one end of the plunger 4 is packaged with a sealing rubber tube 17, and a rubber tube action connector 16 is provided on the end surface, and the rubber tube action connector 16 is connected to the sealing rubber tube 17;

[0080] A driving device and a data acquisition device for obtaining acceleration, temperature and pressure are also provided inside the plunger 4. The driving device passes through the end face of the plunger 4 and is connected to the rubber cylinder action connector 16. The data acquisition device, the driving device and the controller 2 are all connected to the power supply device 10, and the data acquisition device and the driving device are all connected to the controller 2.

[0081] The power supply device 10 is a high-temperature battery.

[0082] Embodiment 11

[0083] A method for using an underground intelligent rubber cartridge plunger, such as Figure 2 As shown, the following steps are included:

[0084] Step 1, the power supply device 10 supplies power to the data acquisition device, the driving device and the controller 2, the data acquisition device collects data of acceleration, temperature and pressure in the gas well, and transmits the data to the controller 2;

[0085] Step 2, the controller 2 controls the driving device to move, and the driving device pulls the rubber cylinder action connector 16 to move, thereby driving the sealing rubber cylinder 17 to deform, and driving the plunger 4 to move under the action of air pressure to achieve drainage and gas production of the gas well.

[0086] like Figure 3 As shown, this embodiment provides a control principle diagram of the operation of an intelligent rubber cartridge plunger. The intelligent rubber cartridge plunger is located at the wellhead: the catcher is closed, the channel is closed, and the pressure P1 and temperature T are collected; P1 is less than P0, and T1 is less than T0; the plunger moves downward: the pressure P, temperature T, and acceleration a are collected; P1 is equal to P0, and T1 is equal to T0; the plunger stops and moves upward: the channel is closed.

[0087] The present invention proposes a downhole intelligent plunger, which can isolate the wellbore through mechatronic design, form an isolation between the downhole gas and the liquid column on the plunger, so that the gas can more effectively push the liquid to drain. In the process of opening the well, the channel of the wellbore isolation is opened, so that the plunger 4 can go down in the well opening state. At the same time, through the pressure sensor 13, temperature sensor 12, and acceleration sensor 11 inside the intelligent rubber cylinder plunger 4, the height of the liquid on the top of the plunger after entering the liquid surface can be judged by comparing with the wellhead pressure and the wellhead temperature, so as to achieve quantitative liquid discharge. When the height of the liquid column at the bottom of the well is too low, the gas well fluid can be produced through the gap between the plunger and the oil pipe, and the plunger 4 can be kept in the downhole buffer locator position, without isolating the wellbore channel, and the gas well continues to produce. When the height of the liquid column reaches a certain level, the action screw 18 is pushed by the reduction motor 8 to directly compress the sealing rubber cylinder 17, so that the sealing rubber cylinder 17 is in the purpose of isolating the wellbore, that is, closing the channel and draining production. Therefore, the intelligent rubber-coated plunger of the present invention can determine the depth of the liquid surface by judging the changes in pressure, temperature, and acceleration, so as to achieve the purpose of quantitative liquid drainage. When the liquid production of the gas well is low, the bypass can be kept in an open state. When the pressure determines that the liquid column on the plunger reaches a certain height, the sealing rubber tube expands to close the sealed wellbore channel, and the airflow pushes the plunger liquid to rise, which plays a role in waiting for liquid drainage. When a large amount of liquid accumulated at the bottom of the well enters the wellbore during the ascent, it can go down again. Compared with traditional plungers, the plunger proposed by the present invention does not need to reach the downhole buffer. After entering a certain depth of the liquid surface, it directly closes the channel and discharges liquid for production. Compared with traditional plungers, the present invention is more suitable for horizontal wells, large liquid volume, small gas volume and the like.

[0088] It has the following advantages:

[0089] 1) The present invention uses mechatronic intelligent control of the plunger to isolate or open the wellbore, and can monitor the operating status of the entire plunger.

[0090] 2) The present invention collects data through pressure, temperature and acceleration sensors, and determines the height of the liquid column on the plunger through the downhole single-chip computer embedded program, which can avoid the problem that the plunger cannot operate due to too high liquid column and the operation efficiency is poor due to too low liquid column.

[0091] 3) The present invention can communicate with the remote back-end through the wellhead communication module, and the technicians can directly monitor the downhole operation status of the plunger, which is more conducive to ensuring the effect of the plunger gas lift drainage and gas production process.

[0092] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wellbore intelligent rubber cartridge plunger, characterized in that: A plunger (4) having a hollow structure is provided, wherein a controller (2) and a power supply device (10) are installed inside the plunger (4); one end of the plunger (4) is packaged with a sealing rubber tube (17), and a rubber tube action connecting piece (16) is provided on the end surface, wherein the rubber tube action connecting piece (16) is connected to the sealing rubber tube (17); The plunger (4) is also provided with a driving device and a data acquisition device for acquiring acceleration, temperature and pressure. The driving device passes through the end surface of the plunger (4) and is connected to the rubber cylinder action connector (16). The data acquisition device, the driving device and the controller (2) are all connected to the power supply device (10). The data acquisition device and the driving device are all connected to the controller (2).

2. The wellbore intelligent rubber cartridge plunger according to claim 1, characterized in that: A support sleeve (15) is installed at the axial end of the plunger (4) close to the rubber cylinder action connecting piece (16), and a fishing neck (14) is embedded in the support sleeve (15).

3. The wellbore intelligent rubber cartridge plunger according to claim 2, characterized in that: The fishing neck (14) is provided with a boss structure in the circumference thereof.

4. The wellbore intelligent rubber cartridge plunger according to claim 1, characterized in that: The driving device comprises a reduction motor (8) and a power screw (18), wherein the power screw (18) is connected to the rubber cylinder action connecting piece (16), and the other end of the power screw (18) is connected to the reduction motor (8); The controller (2) and the power supply device (10) are both connected to the reduction motor (8).

5. The wellbore intelligent rubber cartridge plunger according to claim 4, characterized in that: The data acquisition device and the driving reduction motor (8) are both connected to the controller (2) via a communication data line (9).

6. The wellbore intelligent rubber cartridge plunger according to claim 1, characterized in that: A sealing ring (6) and a plane bearing (7) are provided between the outer wall surface of the dynamic screw (18) and the inner wall surface of the plunger (4).

7. The wellbore intelligent rubber cartridge plunger according to claim 6, characterized in that: There are a plurality of sealing rings (6) and a plurality of plane bearings (7).

8. The wellbore intelligent rubber cartridge plunger according to claim 1, characterized in that: The data acquisition device comprises an acceleration sensor (11), a temperature sensor (12) and a pressure sensor (13); the controller (2) and the power supply device (10) are respectively connected to the acceleration sensor (11), the temperature sensor (12) and the pressure sensor (13).

9. The wellbore intelligent rubber cartridge plunger according to claim 1, characterized in that: The plunger (4) is made of non-metallic material.

10. A method for using an underground intelligent rubber cartridge plunger, characterized in that: The method of using the wellbore intelligent rubber cartridge plunger according to any one of claims 1 to 9 comprises the following steps: The power supply device (10) supplies power to the data acquisition device, the driving device and the controller (2); the data acquisition device collects data on acceleration, temperature and pressure in the gas well and transmits the data to the controller (2); The controller (2) controls the movement of the driving device, and the driving device pulls the rubber cylinder action connecting piece (16) to move, thereby driving the sealing rubber cylinder (17) to deform, and driving the plunger (4) to move under the action of air pressure, thereby achieving drainage and gas production of the gas well.

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