Multi-parameter sensing plunger for position monitoring

Abstract

The multi-parameter sensing plunger for position monitoring comprises a main machine pipe, the two ends of the main machine pipe are connected with a battery assembly and an installation base respectively, an antenna assembly, a temperature sensor, a pressure sensor and an installation support are fixedly installed on the installation base, and the installation support is arranged at the rear end of the installation base and arranged in the main machine pipe. A circuit board is arranged at the front end of the mounting bracket, a magnetic positioning assembly is arranged at the rear end of the mounting bracket, the circuit board is electrically connected with the battery assembly, the antenna assembly, the temperature sensor, the pressure sensor and the magnetic positioning assembly are respectively and electrically connected with the circuit board, the magnetic positioning assembly comprises magnetic steel and a coil wound on the magnetic steel, and rubber pads are arranged at two ends of the magnetic steel. The device can buffer and absorb shock, is simple in structure and convenient to assemble and disassemble, and can realize underground pressure and temperature acquisition and plunger position and well depth judgment functions through the pressure sensor, the temperature sensor and the magnetic positioning assembly under the condition that normal functions of the plunger are not affected.

Description

Technical Field

[0001] The invention relates to the technical field of gas well drainage and gas production, and in particular to a multi-parameter sensing plunger for position monitoring. Background Art

[0002] The plunger gas lift drainage gas production technology is to place a plunger in the gas well, use the gas well's own energy to push the plunger to reciprocate in the oil pipe, and achieve periodic liquid lifting, which can effectively prevent gas from rising and liquid from slipping, and improve lifting efficiency. The plunger can also play a role in wax removal, wax prevention and scale removal during the reciprocating motion. No other power equipment is required, and the production cost is low.

[0003] At present, there are many types of plunger gas lift devices for gas well exploitation at home and abroad, but most of the plunger gas lift drainage only solves the drainage problem and cannot measure the depth of the gas well. When the downhole fixture is displaced, the depth of the gas well will change, resulting in changes in the well condition. The change in well condition will affect the gas production of the gas well, and the plunger gas lift cannot continue to work.

[0004] Prior art CN220151330U discloses a multi-parameter plunger capable of recording depth underground. By setting a pressure measuring device, a temperature measuring device, a depth metering device and a data processing device, the pressure, temperature and depth parameters in the well are collected, and the liquid level and plunger operation conditions are calculated to provide reliable data for optimizing the plunger operation system. However, the plunger is troublesome to assemble and disassemble, which is not conducive to maintenance, and the plunger is easily damaged by impact when working underground, resulting in inaccurate measurement results. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a multi-parameter sensing plunger for position monitoring, which adds downhole pressure, temperature collection and plunger position and well depth judgment functions without affecting the normal function of the plunger, and is able to resist impact to ensure accurate measurement results.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-parameter sensing plunger for position monitoring, comprising a main tube, wherein the two ends of the main tube are respectively connected to a battery assembly and a mounting seat, an antenna assembly, a temperature sensor, a pressure sensor and a mounting bracket are fixedly mounted on the mounting seat, the mounting bracket is arranged at the rear end of the mounting seat and arranged in the main tube, a circuit board is provided at the front end of the mounting bracket, and a magnetic positioning assembly is provided at the rear end, the circuit board is electrically connected to the battery assembly, the antenna assembly, the temperature sensor, the pressure sensor and the magnetic positioning assembly are respectively electrically connected to the circuit board, the magnetic positioning assembly comprises a magnet and a coil wound on the magnet, and rubber pads are provided at both ends of the magnet.

[0007] A microprocessor is mounted on the circuit board.

[0008] An adapter is also installed at the rear end of the mounting bracket, and the adapter is plugged into the plug at the front end of the battery assembly and is electrically connected to the circuit board.

[0009] A battery tube is sleeved on the battery assembly, an inner circular step is arranged inside the battery tube, the tail of the battery tube is threadedly connected with a clamping screw plug and an end cover in sequence, the front end of the battery assembly abuts against the inner circular step, and the rear end abuts against the clamping screw plug.

[0010] The battery tube and the host tube are connected via a union joint.

[0011] The main tube and the mounting bracket are made of non-magnetic materials.

[0012] Beneficial effects of the present invention: 1. The pressure sensor, temperature sensor and magnetic positioning component are used to collect the pressure, temperature data and position information of the plunger during operation, and then the microprocessor can be used to determine the operation status of the plunger; 2. Since the magnetic steel in the magnetic positioning assembly is brittle and easily damaged by impact, rubber pads are arranged at both ends of the magnetic steel to achieve shock absorption effect; 3. The battery assembly is fixed inside the battery tube, and the battery tube is connected to the main tube through a union connector. When the battery needs to be replaced, remove the union connector to separate the battery tube from the main tube for easy disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; 1. Main tube; 2. Battery assembly; 3. Mounting seat; 4. Antenna assembly; 5. Temperature sensor; 6. Pressure sensor; 7. Mounting bracket; 8. Circuit board; 9. Magnet; 10. Coil; 11. Rubber pad; 12. Adapter; 13. Battery tube; 14. Pressing screw plug; 15. End cover; 16. Union connector. DETAILED DESCRIPTION

[0014] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0015] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments. Example

[0016] like Figure 1As shown, the present invention provides a multi-parameter sensing plunger for position monitoring, including a main tube 1, the two ends of the main tube 1 are respectively connected to a battery assembly 2 and a mounting seat 3, an antenna assembly 4, a temperature sensor 5, a pressure sensor 6 and a mounting bracket 7 are fixedly mounted on the mounting seat 3, the mounting bracket 7 is arranged at the rear end of the mounting seat 3 and arranged in the main tube 1, a circuit board 8 is arranged at the front end of the mounting bracket 7, and a magnetic positioning assembly is arranged at the rear end, the circuit board 8 is electrically connected to the battery assembly 2, the antenna assembly 4, the temperature sensor 5, the pressure sensor 6 and the magnetic positioning assembly are respectively electrically connected to the circuit board 8, the magnetic positioning assembly includes a magnetic steel 9 and a coil 10 wound on the magnetic steel 9, and rubber pads 11 are arranged at both ends of the magnetic steel 9. Since the magnetic steel 9 in the magnetic positioning assembly is relatively brittle and easily damaged by impact, the rubber pads 11 are arranged at both ends of the magnetic steel 9 to achieve a shock absorption effect, thereby ensuring the normal operation of the magnetic positioning assembly.

[0017] Specifically, a microprocessor is installed on the circuit board 8 .

[0018] Specifically, an adapter 12 is also installed at the rear end of the mounting bracket 7 , and the adapter 12 is plugged into a plug at the front end of the battery assembly 2 and is electrically connected to the circuit board 8 .

[0019] Specifically, the battery assembly 2 is sleeved with a battery tube 13, an inner circular step is provided inside the battery tube 13, the tail of the battery tube 13 is threadedly connected with a clamping screw plug 14 and an end cap 15 in sequence, the front end of the battery assembly 2 abuts against the inner circular step, and the rear end abuts against the clamping screw plug 14. The battery tube 13 and the main tube 1 are connected through a union 16. When the battery needs to be replaced, the union 16 is removed to separate the battery tube 13 from the main tube 1, which is convenient for disassembly and assembly.

[0020] Specifically, in order to prevent the magnetic positioning component from being interfered by other magnetism during operation and ensure the accuracy of measurement, the main tube 1 and the mounting bracket 7 are made of non-magnetic materials.

[0021] Working process: Multiple sections of oil pipes are arranged in the gas well, and adjacent oil pipes are connected by couplings, and the accumulated liquid in the well is located in the oil pipes. A multi-parameter sensing plunger for position monitoring in the present application uses the formation pressure to move up and down from the bottom of the well to the wellhead blowout preventer, and the pressure sensor 6, temperature sensor 5 and magnetic positioning component inside the plunger collect the pressure, temperature data and position information of the plunger operation process, and then use the microprocessor to judge the operation status of the plunger, and then transmit the data to the host computer through the antenna component 4.

[0022] Among them, the position detection function measures the depth by the change of magnetic field during the operation of the plunger, which is specifically realized by recording the number of couplings that the plunger passes through in the oil pipe. The magnetic field change is measured by the magnetic positioning component. When the magnetic positioning component runs through the coupling in the oil pipe, the magnetic flux of the magnetic positioning component changes. The change of magnetic flux can be converted into voltage change. The voltage signal is processed by the microprocessor to record the number of couplings passing through the oil pipe. The spacing between the oil pipe couplings is ten meters, so as to obtain the lowest depth of the plunger in the well.

[0023] In this embodiment, the pressure sensor 6, the temperature sensor 5 and the magnetic positioning assembly collect the pressure, temperature data and position information of the plunger operation process, and the microprocessor is used to judge the operation of the plunger, so that the gas production unit can more conveniently analyze the well conditions, so that the gas well production process can obtain more complete data support, which can reduce the difficulty of gas well production. At the same time, the rubber pads 11 are arranged at both ends of the magnetic steel 9 to achieve a shock absorption effect, ensure the normal operation of the magnetic positioning assembly, reduce the construction cost, and the multi-parameter sensing plunger for position monitoring has a simple structure and is easy to disassemble and assemble.

[0024] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A multi-parameter sensing plunger for position monitoring, characterized in that: The invention comprises a main tube (1), wherein two ends of the main tube (1) are respectively connected to a battery assembly (2) and a mounting seat (3), an antenna assembly (4), a temperature sensor (5), a pressure sensor (6) and a mounting bracket (7) are fixedly mounted on the mounting seat (3), the mounting bracket (7) is arranged at the rear end of the mounting seat (3) and arranged in the main tube (1), a circuit board (8) is arranged at the front end of the mounting bracket (7), and a magnetic positioning assembly is arranged at the rear end, the circuit board (8) is electrically connected to the battery assembly (2), the antenna assembly (4), the temperature sensor (5), the pressure sensor (6) and the magnetic positioning assembly are respectively electrically connected to the circuit board (8), the magnetic positioning assembly comprises a magnetic steel (9) and a coil (10) wound on the magnetic steel (9), and rubber pads (11) are arranged at both ends of the magnetic steel (9).

2. A multi-parameter sensing plunger for position monitoring according to claim 1, characterized in that: A microprocessor is installed on the circuit board (8).

3. The multi-parameter sensing plunger for position monitoring according to claim 1, characterized in that: The rear end of the mounting bracket (7) is also provided with an adapter (12), the adapter (12) being plugged into a plug at the front end of the battery assembly (2) and electrically connected to the circuit board (8).

4. The multi-parameter sensing plunger for position monitoring according to claim 1, characterized in that: A battery tube (13) is sleeved on the battery assembly (2), an inner circular step is provided inside the battery tube (13), the rear end of the battery tube (13) is threadedly connected to a clamping screw plug (14) and an end cover (15) in sequence, the front end of the battery assembly (2) abuts against the inner circular step, and the rear end abuts against the clamping screw plug (14).

5. The multi-parameter sensing plunger for position monitoring according to claim 4, characterized in that: The battery tube (13) and the main body tube (1) are connected via a union joint (16).

6. The multi-parameter sensing plunger for position monitoring according to claim 1, characterized in that: The main tube (1) and the mounting bracket (7) are made of non-magnetic material.

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