A smart plunger system

Abstract

The present invention relates to an intelligent plunger system, which includes a lubricator body, an explosion-proof controller, and an intelligent plunger, wherein the intelligent plunger is built into the lubricator body and operates in the lubricator body; the explosion-proof controller is arranged on the outer side wall of the lubricator body. The present invention realizes an automatic plunger operation system of the intelligent plunger in the lubricator body through the explosion-proof controller and the intelligent plunger, which solves the problem that the traditional plunger first performs manual analysis on the ground and then establishes a cumbersome process of the plunger operation system. The automatic plunger operation system adjusts parameters according to the actual situation of each well, thereby achieving the best drainage and production of each well and improving the output of the oil and gas field.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas field processes, and in particular relates to an intelligent plunger system. Background Art

[0002] With the improvement of oil and gas well recovery rate, higher requirements are placed on the drainage and gas production process. Among them, plunger gas lift technology has been promoted in major oil and gas fields.

[0003] Plunger gas lift is an intermittent lifting method that uses the energy of the storage layer itself to carry liquid. The plunger is a piston that matches the oil pipe and can move freely in the oil pipe. When working, the well is closed first to increase the bottom hole pressure. When the pressure rises to meet the lifting requirements, the well is opened electrically. The plunger at the bottom of the well continues to rise in the oil pipe under the action of the pressure in the oil and gas well until it rises to the wellhead blowout preventer. The opening and closing of the oil and gas well forms a plunger gas lift working cycle. By repeating this cyclical action, the bottom hole liquid, oil and natural gas can be continuously produced.

[0004] However, due to technical bottlenecks, plunger gas lift has not made any substantial progress in the acquisition of plunger parameters and the establishment of plunger operation systems. The operating conditions of each well are different, which leads to the establishment of plunger operation systems often requiring a lot of manual analysis and uninterrupted system parameter adjustments to achieve a relatively ideal output effect. This method is not only cumbersome and lagging, but also often fails to achieve the best drainage effect, thus affecting the output of oil and gas fields. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides an intelligent plunger system.

[0006] The present invention provides an intelligent plunger system, which includes:

[0007] The main body of the blowout preventer, explosion-proof controller, and intelligent plunger, among which:

[0008] The intelligent plunger is built into the lubricator body and operates in the lubricator body;

[0009] The explosion-proof controller is arranged on the outer side wall of the lubricant preventer body.

[0010] In one embodiment of the present invention, the lubricant preventer body includes a lubricant preventer cap, a buffer spring, a limit block, a production cross pipe, and a wellhead connection flange, wherein:

[0011] The anti-blowout cap is arranged at the top end of the anti-blowout pipe body;

[0012] The limit block is built into the lubricator body near the top end;

[0013] The two ends of the buffer spring are respectively connected to the spray-proof cap and the limit block;

[0014] The production cross pipe is arranged on the outer side wall of the lubricant preventer body;

[0015] The wellhead connecting flange is arranged at the bottom end of the lubricant preventer body.

[0016] In one embodiment of the present invention, the lubricator body further comprises a first communication coil, wherein:

[0017] The first communication coil is embedded in the outer side wall of the lubricator body, and the first communication coil is connected to the explosion-proof controller.

[0018] In one embodiment of the present invention, the intelligent plunger includes a plunger fishing neck, a circuit board, a pressure port, a displacement sensor, a temperature sensor, a pressure sensor, and a Hall sensor, wherein:

[0019] The plunger fishing neck is arranged at the top of the intelligent plunger;

[0020] The circuit board, the pressure port, the displacement sensor, the temperature sensor, the pressure sensor, and the Hall sensor are all built into the intelligent plunger;

[0021] The circuit board is connected to the displacement sensor, the temperature sensor, the pressure sensor, and the Hall sensor;

[0022] The pressure guide port is close to the inner wall of the intelligent plunger;

[0023] The pressure sensor is close to the pressure guide port;

[0024] The displacement sensor and the temperature sensor are located below the smart plunger and above the Hall sensor;

[0025] The Hall sensor is close to the bottom end of the smart plunger.

[0026] In one embodiment of the present invention, the pressure guide port includes a first pressure guide port and a second pressure guide port, and the pressure sensor includes a first pressure sensor and a second pressure sensor, wherein:

[0027] The first pressure-conducting port is located on the inner side wall above the intelligent plunger, and the second pressure-conducting port is located symmetrically on the inner side wall below the intelligent plunger;

[0028] The first pressure sensor is close to the first pressure conducting port, and the second pressure sensor is close to the second pressure conducting port.

[0029] In one embodiment of the present invention, the intelligent plunger further comprises a rechargeable battery and a second communication coil, wherein:

[0030] The rechargeable battery is built into the intelligent plunger, and the rechargeable battery is connected to the circuit board;

[0031] The second communication coil is built in the intelligent plunger, and the second communication coil is connected to the rechargeable battery.

[0032] In one embodiment of the present invention, the present invention is applied to short-distance wireless communication, and the distance range of the short-distance wireless communication is 0 to 100 mm.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention realizes the automatic plunger operation system of the intelligent plunger in the blowout preventer body through the explosion-proof controller and the intelligent plunger, which solves the problem of the cumbersome process of the traditional plunger first performing manual analysis on the ground and then establishing the plunger operation system. The automatic plunger operation system adjusts parameters according to the actual situation of each well, thereby achieving the best drainage and production of each well and increasing the output of the oil and gas field. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of an intelligent plunger system provided by an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of another intelligent plunger system provided by an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the coil coupling principle between communication coils in an intelligent plunger system provided by an embodiment of the present invention;

[0038] Figure 4 A schematic flow chart of an adaptive fuzzy control algorithm for an explosion-proof controller in an intelligent plunger system provided by an embodiment of the present invention;

[0039] Figure 5 A schematic flow chart of a time optimization algorithm for an explosion-proof controller in an intelligent plunger system provided by an embodiment of the present invention;

[0040] Figure 6 A schematic flow chart of a pressure optimization algorithm for an explosion-proof controller in an intelligent plunger system provided in an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 10-blowout preventer body, 20-intelligent plunger, 30-explosion-proof controller, 101-blowout preventer cap, 102-buffer spring, 103-limit block, 104-production cross pipe, 105-wellhead connecting flange, 106-first communication coil, 201-plunger fishing neck, 202-circuit board, 203-pressure port, 204-displacement sensor, 205-temperature sensor, 206-pressure sensor, 207-Hall sensor, 208-rechargeable battery, 209-second communication coil, 2031-first pressure port, 2032-second pressure port, 2061-first pressure sensor, 2062-second pressure sensor. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to specific embodiments.

[0044] Embodiment 1

[0045] See also Figure 1 , Figure 2 , Figure 1 A schematic diagram of the structure of an intelligent plunger system provided by an embodiment of the present invention, Figure 2 A schematic diagram of another intelligent plunger system provided in an embodiment of the present invention. This embodiment provides an intelligent plunger system, the intelligent plunger system comprising:

[0046] The lubricator body 10 , the explosion-proof controller 30 , and the intelligent plunger 20 . The intelligent plunger 20 is built in the lubricator body 10 and operates in the lubricator body 10 . The explosion-proof controller 30 is installed on the outer side wall of the lubricator body 10 .

[0047] Specifically, the establishment of a traditional plunger system often requires a lot of manual analysis. If the plunger wants to obtain downhole parameters, it is necessary to install sensors on the plunger, design drive circuits and power supplies, and transmit data wirelessly. However, due to the special and complex operating environment of the plunger, the existing communication modules and technologies cannot meet the signal transmission between the plunger and the ground, which ultimately leads to poor drainage effects and affects the output of oil and gas fields. Based on the above-mentioned problems, this embodiment installs an explosion-proof controller 30 on the lubricant preventer body 10. The explosion-proof controller 30 and the intelligent plunger 20 jointly realize the automatic plunger operation system of the intelligent plunger 20 in the lubricant preventer body 10, without the cumbersome process of establishing the plunger operation system after manual analysis on the ground.

[0048] Since the explosion-proof controller 30 detects the difference in the environmental magnetic field during the control of the intelligent plunger 20, and detects whether the intelligent plunger 20 reaches the wellhead lubricant preventer according to whether the change in the magnetic field reaches a preset threshold. Therefore, preferably, the lubricant preventer body 10 of this embodiment is a magnetically permeable material, which facilitates the explosion-proof controller 30 to detect the magnetic field, so as to accurately determine the time when the intelligent plunger 20 reaches the wellhead lubricant preventer. Preferably, the magnetically permeable material is a polymer with magnetically permeable properties, and more preferably, the polymer includes polyetheretherketone and polyetherimide. The preset threshold of the change in the magnetic field before and after the intelligent plunger 20 arrives is 15000.

[0049] The present invention realizes the automatic plunger operation system of the intelligent plunger in the blowout preventer body 10 through the explosion-proof controller 30 and the intelligent plunger 20, which solves the problem of the cumbersome process of the traditional plunger first performing manual analysis on the ground and then establishing the plunger operation system. The automatic plunger operation system adjusts parameters according to the actual situation of each well, thereby achieving the best drainage and production of each well and increasing the output of the oil and gas field.

[0050] Furthermore, the lubricant preventer body 10 of the present embodiment includes a lubricant preventer cap 101 , a buffer spring 102 , a limit block 103 , a production cross pipe 104 , and a wellhead connection flange 105 .

[0051] For more details, please refer to Figure 2 In this embodiment, the spray cap 101 is arranged at the top of the spray preventer body 10, the limit block 103 is built in the position near the top of the spray preventer body 10, the two ends of the buffer spring 102 are respectively connected to the spray cap 101 and the limit block 103, the spray cap 101, the buffer spring 102, and the limit block 103 are combined into a buffer device for buffering the situation that the intelligent plunger 20 rises too fast, and the production cross pipe 104 is arranged on the outer wall of the spray preventer body 10. The production cross pipe 104 has two flow channels, according to Figure 1 or Figure 2 The arrows point to the points that are finally collected together and discharged into the subsequent production pipeline. The wellhead connection flange 105 is arranged at the bottom end of the lubricant preventer body 10.

[0052] Furthermore, the lubricator body 10 of this embodiment further includes a first communication coil 106 .

[0053] For more details, please refer to Figure 2 In this embodiment, the first communication coil 106 is embedded in the outer wall of the lubricating pipe body 10, so that the first communication coil 106 and the explosion-proof controller 30 can be connected through an explosion-proof joint, and a protective shell is designed outside the first communication coil 106. The explosion-proof controller 30 detects the environmental magnetic field through the first communication coil 106, and then determines whether the smart plunger 20 reaches the wellhead lubricating pipe.

[0054] Furthermore, the intelligent plunger 20 of the present embodiment includes a plunger salvaging neck 201 , a circuit board 202 , a pressure port 203 , a displacement sensor 204 , a temperature sensor 205 , a pressure sensor 206 , and a Hall sensor 207 .

[0055] For more details, please refer to Figure 2 In this embodiment, the plunger salvage neck 201 is arranged at the top of the smart plunger 20 and is used for salvaging the smart plunger 20. It is designed because the smart plunger 20 cannot work normally in the well under special circumstances, such as flooding, and needs to be salvaged;

[0056] The pressure-conducting port 203 is arranged on the inner wall near the intelligent plunger 20, including a first pressure-conducting port 2031 and a second pressure-conducting port 2032. The pressure sensor 206 is built into the intelligent plunger 20, including a first pressure sensor 2061 and a second pressure sensor 2062. The first pressure-conducting port 2031 is arranged on the inner wall near the top of the intelligent plunger 20, and the second pressure-conducting port 2032 is symmetrically arranged on the inner wall near the bottom of the intelligent plunger 20. The first pressure sensor 2061 is arranged at a position close to the first pressure-conducting port 2031, and the second pressure sensor 2062 is arranged at a position close to the second pressure-conducting port 2032. The first pressure sensor 2061 is used to collect the pressure of the intelligent plunger 20 at the first pressure-conducting port 2031 through the first pressure-conducting port 2031, and the second pressure sensor 2062 is used to collect the pressure of the intelligent plunger 20 at the second pressure-conducting port 2032 through the second pressure-conducting port 2032.

[0057] The displacement sensor 204 and the temperature sensor 205 are built into the smart plunger 20, and are specifically arranged at a lower position inside the smart plunger 20 and above the Hall sensor 207. The displacement sensor 204 is used to collect the position of the smart plunger 20 in the well, and the height of the accumulated liquid in the well is determined by the position information collected by the displacement sensor 204 and the pressure information collected by the first pressure sensor 2061 and the second pressure sensor 2062. The temperature sensor 205 is used to collect the temperature in the well, and the time point when the smart plunger 20 enters the accumulated liquid is determined by the temperature information collected by the temperature sensor 205.

[0058] The Hall sensor 207 is built into the smart plunger 20, and is specifically arranged near the lowest end (bottom end) inside the smart plunger 20. When the smart plunger 20 reaches the locking position at the wellhead or the bottom of the well, by detecting the change in the sampling value of the Hall sensor 207, it can be detected that the smart plunger 20 has reached the wellhead or the bottom of the well.

[0059] It should be noted that the present embodiment also collects clock signals in real time through the clock chip integrated on the circuit board 202 in the smart plunger 20 , thereby calculating the rising speed of the smart plunger 20 in the well in combination with the position information collected by the displacement sensor 204 .

[0060] The circuit board 202 is built into the intelligent plunger 20. The circuit board 202 is electrically connected to the displacement sensor 204, the temperature sensor 205, the pressure sensor 206, and the Hall sensor 207. The displacement sensor 204, the temperature sensor 205, the pressure sensor 206, and the Hall sensor 207 collect information such as temperature, pressure, and liquid level in the well. The collected temperature, pressure, and liquid level information are analyzed and processed by the processing chip integrated on the circuit board 202, and the processing result is transmitted to the explosion-proof controller 30 through wireless communication, so that the intelligent plunger 20 and the explosion-proof controller 30 jointly control the intelligent plunger 20, establish an automatic plunger operation system (gas lift switch system), and effectively control the gas production and liquid production of the oil and gas wells.

[0061] The intelligent plunger 20 of the present embodiment collects various parameters in the well and analyzes the operation status of the intelligent plunger 20, which solves the problem of uncertainty in relying on the ground to estimate the operation status of the intelligent plunger 20 in the well. At the same time, it solves the lag caused by the traditional ground controller in collecting and analyzing the data in the well, and cannot effectively guide the establishment of the plunger operation system. The present embodiment transmits the data collected, analyzed and calculated by the intelligent plunger 20 to the explosion-proof controller 30 through wireless communication transmission, and then the explosion-proof controller 30 and the intelligent plunger 20 jointly realize the automatic plunger operation system without manual operation.

[0062] Furthermore, the smart plunger 20 of this embodiment also includes a rechargeable battery 208 and a second communication coil 209 .

[0063] Specifically, the traditional plunger is powered by a traditional battery, which causes the plunger to not work for a long time, and cannot truly realize the automation and intelligence of the plunger technology, and cannot be widely promoted. Therefore, please refer to Figure 2 In this embodiment, the intelligent plunger 20 has a built-in rechargeable battery 208 and a second communication coil 209, wherein the rechargeable battery 208 is connected to the circuit board 202, and the second communication coil 209 is connected to the rechargeable battery 208. The rechargeable battery 208 supplies power to the circuit board 202 in the intelligent plunger 20. At the same time, when the rechargeable battery 208 is low on power, the rechargeable battery 208 is wirelessly charged through the second communication coil 209 by coil coupling, thereby enabling the intelligent plunger 20 to work for a long time in the well, which is more conducive to realizing the automation and intelligence of the plunger technology, so that it can be promoted on a large scale.

[0064] This embodiment realizes wireless charging of the smart plunger 20 through coil coupling, thereby solving the problem that the smart plunger 20 cannot work for a long time due to limited capacity of traditional batteries.

[0065] Furthermore, the explosion-proof controller 30 of this embodiment has a built-in processor with an intelligent control algorithm.

[0066] Specifically, the intelligent control algorithm of this embodiment includes an adaptive fuzzy control algorithm, a time optimization algorithm, and a pressure optimization algorithm. Specifically:

[0067] See also Figure 3 , Figure 3 A schematic flow chart of an adaptive fuzzy control algorithm of an explosion-proof controller in an intelligent plunger system provided by an embodiment of the present invention, Figure 3 Medium Ke, KΔe, KΔ 2 e is the scale transformation factor of the classification number, d is the delay beat number, and Ku is the output scale transformation factor. It can be seen that the adaptive fuzzy control algorithm built into the explosion-proof controller 30 of this embodiment is mainly achieved by self-learning the measured data such as temperature, pressure, liquid level, and self-adjusting the output in real time to achieve the best gas production and liquid production.

[0068] See also Figure 4 , Figure 4 A schematic flow chart of a time optimization algorithm for an explosion-proof controller in an intelligent plunger system provided by an embodiment of the present invention, Figure 4 Where P is oil pressure, PH / PL is high / low pressure threshold, T is time count, Tw is dangerous rise time, Tk is too fast rise time, Tmax is maximum well opening time, T 范围 is the time adjustment range, T 正常 is the normal rise time, T 关 It is the shut-in time. It can be seen that the time optimization algorithm built into the explosion-proof controller 30 of this embodiment mainly determines whether the rising speed of the smart plunger 20 is too fast or too slow by collecting the time parameters of the smart plunger 20 reaching the wellhead blowout preventer, and performs self-adjustment in real time to achieve the best gas production and liquid production effects.

[0069] See also Figure 5 , Figure 5 A schematic diagram of a flow chart of a pressure optimization algorithm of an explosion-proof controller in an intelligent plunger system provided by an embodiment of the present invention. Figure 5 P in the middle is oil pressure, PH / PL is high / low pressure threshold, P 套 is the casing pressure value, T is the time count, Tw is the dangerous rise time, Tk is the excessive rise time, Tmax is the maximum well opening time, T 范围 is the time adjustment range, T 正常 is the normal rise time, T 关is the shut-in time, T 未到 It is because the intelligent plunger 20 has not reached the shut-in time. It can be seen that the pressure optimization algorithm built into the explosion-proof controller 30 of this embodiment mainly determines whether the rising speed of the intelligent plunger 20 is too fast or too slow by collecting the pressure parameters of the oil pipe and casing, and makes real-time adjustments to achieve the best gas production and liquid production effects.

[0070] The explosion-proof controller 30 also transmits data to the remote client for viewing through the well site digital system, wherein the well site digital system preferably has a model of ZQP-200, whose interface is a standard RS485 interface and adopts a standard Modbus protocol, but is not limited to this model of well site digital system.

[0071] The intelligent control algorithm built into the explosion-proof controller 30 of this embodiment can self-learn and self-adjust the plunger operation system and parameters, thus solving the problem of multiple manual parameter adjustments required for different well conditions and at different times, achieving automation and intelligence, and facilitating large-scale promotion.

[0072] Furthermore, the intelligent plunger system of this embodiment is applied to short-range wireless communication.

[0073] Specifically, the short-distance wireless communication technology of this embodiment includes short-distance wireless communication technology and short-distance wireless charging technology. The short-distance wireless communication technology includes a wireless communication module in the smart plunger 20 and a wireless communication module in the lubricator body 10. The short-distance wireless charging technology includes a wireless energy receiving module in the smart plunger 20 and a wireless energy transmitting module in the lubricator body 10. The wireless communication module and the wireless energy receiving module in the lubricator body 10 are realized through the first communication coil 106, and the wireless communication module and the wireless energy receiving module in the smart plunger 20 are realized through the second communication coil 209. The first communication coil 106 and the second communication coil 209 realize short-distance two-way communication by coil coupling. Please refer to Figure 6 , Figure 6 A schematic diagram of the coil coupling principle between communication coils in an intelligent plunger system provided by an embodiment of the present invention, Figure 6In the figure, N1 and N2 are the coil turns of the first communication coil 106 and the second communication coil 209, r1 and r2 are the radius of the first communication coil 106 and the second communication coil 209, respectively. R represents the distance between the first communication coil 106 and the second communication coil 209, that is, the distance of the short-range wireless communication in this embodiment. It can be seen that in the wireless communication in this embodiment, the first communication coil 106 and the second communication coil 209 transmit signals and energy through coil coupling, and the wireless communication module in the blowout preventer body 10 is connected to the intelligent plunger 20. The wireless communication module enables wireless communication between the explosion-proof controller 30 (first data end) and the smart plunger 20 (second data end). The explosion-proof controller 30 also analyzes whether the smart plunger 20 needs to be charged based on the data sent to it by the smart plunger 20. When the power level is lower than the set threshold, the wireless energy transmitting module in the blowout preventer body 10 of the explosion-proof controller 30 transmits energy to the smart plunger 20, and the wireless energy receiving module of the smart plunger 20 starts to charge the rechargeable battery 208 until it is fully charged. Preferably, the preset power threshold is 40%.

[0074] Preferably, the distance range of the short-range wireless communication is 0-100 mm, especially 80 mm.

[0075] The working principle of the intelligent plunger provided in this embodiment is as follows:

[0076] The explosion-proof controller 30 completes the detection of whether the intelligent plunger 20 reaches the wellhead blowout preventer. The detection principle is that the explosion-proof controller 30 detects different environmental magnetic fields before and after the intelligent plunger 20 arrives.

[0077] After the explosion-proof controller 30 detects that the intelligent plunger 20 has arrived at the wellhead blowout preventer, it sends a handshake signal to the intelligent plunger 20 through wireless communication. After receiving the handshake signal, the intelligent plunger 20 returns a response, and the communication link between the two is connected. At this time, the explosion-proof controller 30 sends a command requiring test data to the intelligent plunger 20 until the intelligent plunger 20 returns the required test data. The explosion-proof controller 30 receives the data and analyzes the data according to the intelligent control algorithm built into the explosion-proof controller 30, gives new control parameters, and sends the new control parameters to the intelligent plunger 20; at the same time, the explosion-proof controller 30 analyzes whether the intelligent plunger 20 needs to be charged according to the received data. When the power is lower than the set threshold, the explosion-proof controller 30 sends energy transfer to the intelligent plunger 20 until the rechargeable battery 208 in the intelligent plunger 20 is fully charged;

[0078] The intelligent plunger 20 receives the new control parameters, and moves up and down in the lubricant preventer body 10 according to the new control parameters, and repeats such operations until gas and liquid production are completed.

[0079] To summarize, the present embodiment collects various parameters in the well through the intelligent plunger 20 and analyzes the operation status of the intelligent plunger 20, thereby solving the problem of uncertainties in relying on the ground to estimate the operation status of the intelligent plunger 20 in the well; the present embodiment transmits plunger data by wireless transmission, thereby solving the problem that the ground is lagging behind in the collection and analysis of well data and cannot effectively guide the establishment of the plunger operation system; the present embodiment solves the problem that the traditional plunger battery has limited capacity and cannot work for a long time by wirelessly charging the plunger; the intelligent control algorithm in the intelligent plunger system of the present embodiment performs self-learning and self-adjustment on the plunger operation system and parameters, thereby solving the problem that the traditional parameters need to be adjusted manually multiple times for different well conditions and different periods.

[0080] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0081] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0082] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0085] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An intelligent plunger system, characterized in that: The intelligent plunger system comprises a lubricator body (10), an intelligent plunger (20), and an explosion-proof controller (30), wherein: The lubricator body (10) comprises a first communication coil (106), the first communication coil (106) is embedded in the outer wall of the lubricator body (10), and the first communication coil (106) is connected to the explosion-proof controller (30); The intelligent plunger (20) is built into the lubricant preventer body (10) and operates in the lubricant preventer body (10); the intelligent plunger (20) comprises a plunger fishing neck (201), a circuit board (202), a pressure port (203), a displacement sensor (204), a temperature sensor (205), a pressure sensor (206), and a Hall sensor (207); the plunger fishing neck (201) is arranged at the top of the intelligent plunger (20); the circuit board (202), the pressure port (203), the displacement sensor (204), the temperature sensor (205), the pressure sensor (206), and the Hall sensor (207) are all built into the intelligent plunger (20); the circuit board (202) and the displacement sensor (204), the temperature sensor (205), the pressure sensor (206), and the Hall sensor (207) are connected; a clock chip is integrated on the circuit board (202), and the clock signal is collected in real time by the clock chip, and the rising speed of the intelligent plunger (20) in the well is obtained in combination with the position information collected by the displacement sensor (204); the pressure port (203) is arranged on the inner wall of the intelligent plunger (20); the pressure sensor (206) is close to the pressure port (203); the displacement sensor (204) and the temperature sensor (205) are close to the bottom of the intelligent plunger (20) and above the Hall sensor (207); the Hall sensor (207) is close to the bottom of the intelligent plunger (20); The intelligent plunger (20) further comprises a rechargeable battery (208) and a second communication coil (209); the rechargeable battery (208) is built into the intelligent plunger (20), and the rechargeable battery (208) is connected to the circuit board (202); the second communication coil (209) is built into the intelligent plunger (20), and the second communication coil (209) is connected to the rechargeable battery (208); The explosion-proof controller (30) is arranged on the outer side wall of the lubricant preventer body (10).

2. The intelligent plunger system according to claim 1, characterized in that: The lubricant preventer body (10) comprises a lubricant preventer cap (101), a buffer spring (102), a limit block (103), a production cross pipe (104), and a wellhead connection flange (105), wherein: The anti-blowout cap (101) is arranged at the top end of the anti-blowout pipe body (10); The limit block (103) is built into the lubricant preventer body (10) at a position close to the top end; The two ends of the buffer spring (102) are respectively connected to the spray-proof cap (101) and the limit block (103); The production transverse pipe (104) is arranged on the outer side wall of the lubricant preventer body (10); The wellhead connection flange (105) is arranged at the bottom end of the lubricant preventer body (10).

3. The intelligent plunger system according to claim 1, characterized in that: The pressure conducting port (203) comprises a first pressure conducting port (2031) and a second pressure conducting port (2032), and the pressure sensor (206) comprises a first pressure sensor (2061) and a second pressure sensor (2062), wherein: The first pressure-conducting port (2031) is located on the inner side wall above the smart plunger (20), and the second pressure-conducting port (2032) is located symmetrically on the inner side wall below the smart plunger (20); The first pressure sensor (2061) is close to the first pressure conducting port (2031), and the second pressure sensor (2062) is close to the second pressure conducting port (2032).

4. The intelligent plunger system according to claim 1, characterized in that: Applied to short-range wireless communication, the distance range of short-range wireless communication is 0~100mm.

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