Under-pump intelligent device and using method thereof

Abstract

The invention provides an under-pump intelligent device and a using method thereof.The under-pump intelligent device comprises an ejector rod, a positioning ring, a motor, a central processing unit and a proximity sensor, the motor is connected with the lower end of the ejector rod, the ejector rod is connected with the positioning ring, and the central processing unit is connected with the motor and the proximity sensor; the central processing unit receives a control instruction sent by a ground control cabinet and controls the motor to drive the ejector rod to move upwards and downwards according to the control instruction, and the proximity sensor collects position information of the positioning ring and transmits the position information to the central processing unit so as to confirm the position of the ejector rod. According to the under-pump intelligent device and the using method thereof, setting of a layered packer of an oil extraction pipe column of an electric pump well can be achieved in an auxiliary mode, oil drainage of a pump cylinder can be achieved, under-pump parameter testing and oil jacket annulus idle working liquid level testing can be achieved, and the under-pump intelligent device is multifunctional and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield development, and in particular to an intelligent device under a pump and a use method thereof. Background Art

[0002] After the stratified production tubing is lowered into the well, the stratified packer needs to be set. The most commonly used stratified packer is set hydraulically, so it is necessary to pressurize the oil pipe at the wellhead. However, the upper and middle part of the production tubing is connected to an oil production pump, and the valve ball on the fixed valve at its lower end sits on the valve seat, which makes it impossible for the hydraulic pressure at the wellhead to be transmitted to the stratified packer downhole. In order to solve the above problems, engineers have developed a pump-under-pump push rod device. The push rod pushes the valve ball open, so that after the packer is hydraulically set, the push rod can be controlled to fall by hydraulically breaking the shear pins, and the valve ball falls to achieve oil production. However, the problem is that it can only be used once and cannot be reused, and it is impossible to verify whether the valve ball has actually fallen into the valve seat.

[0003] Patent CN 103806886 B discloses a downhole steam sealing device and sealing method for a heavy oil thermal recovery well, including a thermal recovery packer that is sealed in the well and above the oil layer, a reverse switch is set in the middle of the bottom of the thermal recovery packer, and the top is connected to a hydraulic poke valve device through a screen pipe, the hydraulic poke valve device is triggered downward with the reverse switch in the center, the hydraulic poke valve device is connected to a fixed valve controller through an oil pipe, and the fixed valve controller is installed at the lower end of the pump. The invention can not only realize the effective closing of the switch after the steam injection operation, but also realize that the switch opening of the pumping operation after the steam injection is carried out in the sealed state of the wellhead, overcoming the defects and shortcomings of the prior art.

[0004] Patent CN104196716B discloses a rod pump pressure relief tool, including a sleeve matched with the rod pump, and a rotatable push rod is arranged inside the sleeve. The push rod is directly opposite to the valve ball inside the pump barrel of the rod pump. When in use, the push rod is rotated until the push rod pushes open the valve ball, so that the high-pressure gas or high-pressure liquid in the rod pump can be released. The rod pump pressure relief tool realizes simple, safe and fast pressure relief by installing a push rod that can push open the valve ball in the rod pump.

[0005] Patent CN209622101U discloses a connection structure between a ball valve and a valve stem, including a ball, an upper valve stem and a lower valve stem, a spline groove is provided at the opening of the upper end of the ball, the upper valve stem and the valve stem are spline-connected through the spline groove, a blow-proof flange and a sealing ring are provided in the middle of the upper valve stem, the sealing ring is provided at one end close to the ball, the blow-proof flange is provided at the upper end of the sealing ring, a rod head is provided at the top of the upper valve stem, the lower valve stem and the ball are an integrally welded structure, a bearing is provided at the lower end of the lower valve stem, and the lower valve stem is rotatably connected to the bearing. The connection structure between the ball valve and the valve stem transmits torque to the bearing, reduces torsional stress, and at the same time improves the sealing performance of the valve stem and the ball by using a spline connection, which is worthy of promotion.

[0006] Patent CN209129841U discloses a pump valve ball jacking device, which includes a top tube of a cylindrical structure, which is connected by an upper joint and a lower joint, the upper end of the upper joint is a connecting end for connecting with the pump barrel of the pump, and a push rod is installed in the top tube, which has a push rod that can extend from the upper end of the top tube to push the valve ball to separate the valve ball from the valve seat, and the push rod is provided with a lower stop structure for cooperating with the lower joint downward limit stop when the upper joint is connected to the lower joint to prevent the push rod from falling, and the push rod is also provided with an upper stop structure for cooperating with the upper joint downward limit stop when the upper joint is separated from the lower joint to prevent the push rod from separating from the upper joint, and the support device is connected below the tubular pump, and when the hydraulic packer is connected below, the packer is seated by hydraulic pressure from the oil pipe and the tubular pump. Compared with the conventional hydraulic seated bridge plug string, one trip to the string is reduced, saving operation costs.

[0007] Patent CN201706036U discloses a valve ball push rod device, specifically a valve ball position adjustment device for ball valves used in unclean media such as high viscosity, suspension, pulp, etc. It includes a valve body, and is characterized by: a support seat is welded on the bottom of the valve body, the push rod is screwed into the support seat, the main body and the support seat are connected by threads, and then the stuffing box assembly is installed into the stuffing box hole of the support seat, the stuffing box assembly is deposited with a seasoning gland, and the top cover is screwed on the outer end of the support seat to cover the push rod.

[0008] The above-mentioned comparative patents disclose a variety of push rod devices, but all of them use mechanical methods to achieve the push rod movement and fail to solve the technical problem we want to solve. For this reason, we invented a new pump-under intelligent device and its use method. Summary of the invention

[0009] The object of the present invention is to provide a method of combining mechanical and electrical control to achieve multi-parameter testing and electromechanical control under pump.

[0010] The objectives of the present invention can be achieved through the following technical measures: an intelligent device under the pump, which includes a push rod, a positioning ring, a motor, a central processing unit and a proximity sensor. The motor is connected to the lower end of the push rod, and the push rod is connected to the positioning ring. The central processing unit is respectively connected to the motor and the proximity sensor. The central processing unit receives control instructions sent by a ground control cabinet, and controls the motor to drive the push rod to move upward and downward according to the control instructions. The proximity sensor collects the position information of the positioning ring and transmits the position information to the central processing unit to confirm the position of the push rod.

[0011] The purpose of the present invention can also be achieved by the following technical measures:

[0012] The pump-under-intelligent device also includes a body, which is a cylindrical rigid body. The central processor, the motor, the push rod and the positioning ring are all located on the axis of the body and are coaxial with the body.

[0013] The upper end of the body is connected to the fixed valve under the pump through a thread, and the lower end of the body is connected to the lower oil pipe through a thread.

[0014] The body comprises a flow passage, and the flow passage passes through the body from top to bottom.

[0015] The proximity sensor is fixed inside the upper end of the body, close to the outer side of the push rod, and the proximity sensor corresponds to the positioning ring in the axial direction.

[0016] The pump-under intelligent device also includes an internal temperature and pressure sensor, which is fixed to the upper end surface of the body and avoids the flow passage and the proximity sensor, and is used to test the temperature and pressure inside the oil pipe.

[0017] The pump-under intelligent device further comprises an external temperature and pressure sensor, which is located on the outer wall of the body and is used to test the temperature and pressure outside the oil pipe.

[0018] The pressure value measured by the external pressure sensor is P1, according to the formula P1 = ρ

[0019] *g*h0; wherein ρ is the density of the oil-water mixture, g is the acceleration of gravity, and h0 is the sinking degree of the position of the intelligent device under the pump; therefore, h0=P1 / (ρ*g), and the sinking degree of the pump h2=h0-h1; wherein h1 is the distance between the pump and the intelligent device under the pump; the intelligent device under the pump can monitor and calculate the sinking degree of the pump h2 in real time.

[0020] The pump intelligent device also includes a cable, and the central processor is connected to the ground control device through the input end of the cable; the central processor is connected to other electrical equipment underground through the output end of the cable.

[0021] The purpose of the present invention can also be achieved by the following technical measures: a method for using a pump-under intelligent device, the method for using a pump-under intelligent device adopts a pump-under intelligent device, comprising:

[0022] (1) The central processing unit reads the signal from the ground control cabinet and determines whether the signal instruction is a test or a control signal; if it is a test signal, it proceeds to step (3); if it is a control signal, it proceeds to step (2);

[0023] (2) Determine whether the command is a push rod extension command or a push rod retraction command; if it is a push rod extension command, proceed to step (4); if it is a push rod retraction command, proceed to step (5);

[0024] (3) The central processing unit reads the data of the proximity sensor, the internal temperature and pressure sensor, and the external temperature and pressure sensor, and sends the data to the ground control cabinet; return to step (1);

[0025] (4) reading the proximity sensor signal and determining whether the push rod has been extended; if the push rod has been extended, proceeding to step (6); if the push rod has not been extended, proceeding to step (8);

[0026] (5) reading the proximity sensor signal and determining whether the ejector pin has been recovered; if the ejector pin has been recovered, proceeding to step (7); if the ejector pin has not been recovered, proceeding to step (9);

[0027] (6) The central processing unit sends a signal that the push rod has been extended to the ground control cabinet;

[0028] (7) Sending a signal that the ejector rod has been recovered to the ground control cabinet;

[0029] (8) The CPU drives the motor and the push rod extends; return to step (4);

[0030] (9) Drive the motor and retract the ejector pin; return to step (5).

[0031] The purpose of the present invention can also be achieved by the following technical measures:

[0032] In step 8, the central processing unit receives the push rod extension command issued by the ground control cabinet, and the central processing unit sends a command to control the movement of the motor, and the push rod moves upward to push out; the valve ball is pushed off the valve seat, and the crude oil in the pump barrel is discharged.

[0033] In step 9, the central processor receives the push rod recovery command issued by the ground control cabinet, and the central processor sends a command to control the motor movement. The push rod moves downward under the drive of the motor, the valve ball under the pump falls into the valve seat, and the pump starts to work normally.

[0034] The intelligent device under the pump and its use method in the present invention use a combination of mechanical and electrical control to achieve the measurement and control function of the device. The power supply is connected by a cable, and a cable can be shared with the downhole intelligent production distributor. The movement position of the push rod can be controlled and confirmed on the ground; the pump barrel can unload oil at any time, and the inside of the oil pipe can be pressurized to seal the packer at any time; the parameter test under the pump and the dynamic liquid level test of the casing annulus can be realized. It is a multifunctional and practical intelligent device under the pump, which provides support for the application of intelligent stratified oil production technology in oil fields.

[0035] The benefits of this invention are as follows: the device is powered by a cable connection and can share a cable with the downhole intelligent production distributor. The intelligent measurement and control technology is applied to assist electric pump oil production, and the extension and recovery of the push rod under the pump can achieve real-time testing and control. It can assist in the setting of the hydraulically controlled stratified packer of the oil production tubing of the electric pump well, and can achieve oil leakage from the pump barrel. The intelligent device under the pump can test the temperature and pressure inside and outside the tubing, where the pressure outside the tubing can be converted into the pump sinking degree, and can realize the parameter test under the pump and the dynamic liquid level test of the casing annulus. It is a multifunctional and practical intelligent device under the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of a specific embodiment of the pump intelligent device of the present invention;

[0037] Figure 2 for Figure 1 A_A view of the smart device under the pump shown;

[0038] Figure 3 A schematic diagram of the central processing unit control logic of the pump under intelligent device in a specific embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of an oil production pipe string in a specific embodiment of the present invention.

[0040] In the figure: 1. Push rod; 2. Positioning ring; 3. Current passage; 4. Motor; 5. Control line; 6. Central processing unit; 7. Proximity sensor; 8. Internal temperature and pressure sensor; 9. External temperature and pressure sensor; 10. Test line No. 1; 11. Test line No. 2; 12. Test line No. 3; 13. Cable input end; 14. Cable output end; 15. Main body; 16. Circuit installation channel; 3-1. Ground control cabinet; 3-2. Cable; 3-3. Oil pipe; 3-4. Electric pump; 3-5. Intelligent device under the pump; 3-6. Intelligent production distributor 1; 3-7. Hydraulic control packer; 3-8. Intelligent production distributor 2. DETAILED DESCRIPTION

[0041] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations and / or combinations thereof.

[0043] The pump intelligent device of the present invention includes a push rod, a positioning ring, a motor, a central processing unit, a proximity sensor, an internal temperature and pressure sensor, an external temperature and pressure sensor, a cable and a body. The body is a cylindrical rigid body; the motor is connected to the lower end of the push rod, and the push rod is connected to a positioning ring; the central processing unit, the motor, the push rod and the positioning ring are all located on the axis of the body and are coaxial with the body; the upper end of the device body is connected to the fixed valve under the pump through a thread; the lower end of the body is connected to the lower oil pipe through a thread; the flow channel of the body runs through the body from top to bottom; the proximity sensor is fixed to the inside of the upper end of the body, close to the outside of the push rod, and the proximity sensor corresponds to the positioning ring in the axial direction; the internal temperature and pressure sensor is fixed to the upper end face of the body and avoids the position of the flow channel and the proximity sensor, and is used to test the temperature and pressure inside the oil pipe; the external temperature and pressure sensor is located on the outer wall of the body, and is used to test the temperature and pressure outside the oil pipe. The central processing unit is connected to the ground control device through the cable input end; the central processing unit is connected to other electrical equipment underground through the cable output end.

[0044] The intelligent device under the pump of the present invention can realize the upward and downward movement of the push rod driven by the internal motor; before going down the well, the push rod pushes the valve ball at the bottom of the oil production pump to realize the internal pressure of the entire oil production pipe string; after the pipe string is lowered into the well, the wellhead is pressurized to realize the sealing of the hydraulic control packer in the pipe string. After the sealing is completed, the push rod moves downward driven by the motor, and the valve ball at the lower end of the oil production pump falls into the ball seat, so that normal oil production can be realized. The push rod is provided with a positioning ring to cooperate with the proximity sensor in the intelligent device under the pump to realize the confirmation that the push rod has fallen into place. The intelligent device under the pump is equipped with the internal and external pipe pressure and temperature detection function, which can realize the dynamic liquid level depth test. The temperature and pressure parameter test under the pump can be used for pump working condition detection.

[0045] The following are several specific embodiments of the present invention.

[0046] Example 1

[0047] In a specific embodiment 1 of the present invention, the pump intelligent device is composed of electronic components, electronic circuits and mechanical structures, such as Figure 1 shown.

[0048] The electronic components include: a central processing unit 6, a motor 4, a proximity sensor 7, an internal temperature and pressure sensor 8 and an external temperature and pressure sensor 9;

[0049] The electronic circuit includes: a control line 5, a No. 1 test line 10, a No. 2 test line 11, a No. 3 test line 12, a cable input terminal 13, and a cable output terminal 14, a total of six electronic circuits;

[0050] The mechanical structure includes: a push rod 1, a positioning ring 2, a current passage 3, a body 15, and a circuit installation passage 16; Figure 2 As shown, Figure 1 AA view. The flow passage 3 on the body 15 is an axial through hole; the circuit installation passage 16 is a blind hole, and electronic components such as circuit boards are installed inside;

[0051] The connection relationship between the electronic components and the electronic circuits is as follows: the central processing unit 6 is connected to the motor 4 through the control line 5; the central processing unit 6 is connected to the proximity sensor 7 through the test line No. 1 10; the central processing unit 6 is connected to the internal temperature and pressure sensor 8 through the test line No. 2 11; the central processing unit 6 is connected to the external temperature and pressure sensor 9 through the test line No. 3 12; the central processing unit 6 is connected to the ground control cabinet through the cable input terminal 13; the central processing unit 6 is connected to other electrical equipment underground through the cable output terminal 14.

[0052] Mechanical connection and mechanical position relationship: the main body 15 is a cylindrical rigid body; the motor 4 is connected to the lower end of the push rod 1, and the push rod 1 is connected with a positioning ring 2; the central processing unit 6, the motor 4, the push rod 1 and the positioning ring 2 are all located on the axis of the main body 15 and are coaxial with the main body 15; the upper end of the main body 15 of the device is connected to the fixed valve under the pump through a thread; the lower end of the main body 15 is connected to the lower oil pipe through a thread; the flow channel 3 of the main body 15 passes through the main body 15 from top to bottom; the proximity sensor 7 is fixed to the inside of the upper end of the main body 15, close to the outside of the push rod 1, and the proximity sensor 7 corresponds to the positioning ring 2 in the axial direction; the internal temperature and pressure sensor 8 is fixed to the upper end surface of the main body and avoids the position of the flow channel 3 and the proximity sensor 7, and is used to test the temperature and pressure inside the oil pipe; the external temperature and pressure sensor 9 is located on the outer wall of the main body 15, and is used to test the temperature and pressure outside the oil pipe;

[0053] The intelligent device under the pump can realize the following functions:

[0054] The hydraulically controlled packer is set: The intelligent device under the pump is installed at the lower part of the downhole electric pump, and its push rod is in a state of pushing out the valve ball. The intelligent device under the pump is lowered into the well together with the production tubing. After the tubing is in place, water is injected from the oil pipe to pressurize it, and the hydraulically controlled packer in the production tubing is set. Then, the command to retract the push rod is sent from the ground control cabinet through the cable, and the push rod of the intelligent device under the pump is recovered, the valve ball under the pump falls into the valve seat, and the pump starts to work normally. During the recovery process, the positioning ring 2 on the push rod 1 under the pump touches the proximity sensor 7, and the proximity sensor 7 transmits the arrival signal to the central processing unit 6, and the central processing unit 6 sends the push rod recovery arrival signal to the ground control cabinet through the cable 13.

[0055] Pump oil unloading: The ground control cabinet sends a push rod ejection command to the central processor 6 of the intelligent device under the pump through a cable. The central processor 6 sends a command to control the movement of the motor 4 through the control line 5, and the push rod 1 moves upward to eject. The valve ball is pushed off the valve seat, and the crude oil in the pump barrel is unloaded.

[0056] Example 2

[0057] In a specific embodiment 2 of the present invention, as Figure 3 As shown, the logic control method of the pump under intelligent device includes:

[0058] (1) Read the signal from the ground control cabinet and determine whether the signal is a test or control signal. If it is a test signal, proceed to step (3); if it is a control signal, proceed to step (2);

[0059] (2) Determine whether the command is a push rod extension command or a push rod retraction command; if it is a push rod extension command, proceed to step (4); if it is a push rod retraction command, proceed to step (5);

[0060] (3) Read the sensor data and send it to the ground control cabinet; return to step (1);

[0061] (4) reading the proximity sensor signal and determining whether the push rod has been extended; if the push rod has been extended, proceeding to step (6); if the push rod has not been extended, proceeding to step (8);

[0062] (5) reading the proximity sensor signal and determining whether the ejector pin has been recovered; if the ejector pin has been recovered, proceeding to step (7); if the ejector pin has not been recovered, proceeding to step (9);

[0063] (6) Sending a signal that the push rod has been extended to the ground control cabinet;

[0064] (7) Sending a signal that the ejector rod has been recovered to the ground control cabinet;

[0065] (8) Drive the motor to extend the push rod; return to step (4);

[0066] (9) Drive the motor and retract the ejector pin; return to step (5).

[0067] Example 3

[0068] In a specific embodiment of the present invention, the present invention can calculate the sinking degree of the pump: the pressure value P1 measured by the external pressure sensor 9 is calculated through the formula P1=ρ*g*h0; wherein ρ is the density of the oil-water mixture, g is the acceleration of gravity, and h0 is the sinking degree of the position of the intelligent device under the pump; therefore, h0=P1 / (ρ*g), and the sinking degree of the pump h2=h0-h1; wherein h1 is the distance between the pump and the intelligent device under the pump; the intelligent device under the pump can monitor and calculate the sinking degree of the pump h2 in real time.

[0069] Example 4

[0070] like Figure 4 As shown, this figure is a schematic diagram of the oil production string structure using the pump-under intelligent device. The ground control cabinet 3-1 is connected to the electric pump 3-4, the pump-under intelligent device 3-5, the intelligent production distributor 1 3-6, and the intelligent production distributor 2 3-8 from top to bottom through the cable 3-2; the two intelligent production distributors correspond to two oil layers respectively; the hydraulically controlled packer 3-7 is located between the intelligent production distributor 1 and the intelligent production distributor 2 in the string, and is used to separate the oil layers;

[0071] like Figure 4 Connect the pipe string. Before going down the well, the intelligent device under the pump is in the state of ejector rod ejection, and the production switches of intelligent production distributor 1 and intelligent production distributor 2 are in the closed state. After the pipe string is in place, hydraulic pressure is applied through the oil pipe to set the hydraulic control packer 3-7; the ground control cabinet 3-1 sends the ejector rod recovery command to the intelligent device under the pump 3-5; the ground control cabinet sends the opening command to the intelligent production distributor to open the corresponding oil layer; start the electric pump to start pumping oil production;

[0072] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein with equivalents. 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.

[0073] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

Claims

1. Intelligent device under the pump, characterized in that: The intelligent device under the pump includes a push rod, a positioning ring, a motor, a central processing unit and a proximity sensor. The motor is connected to the lower end of the push rod, and the push rod is connected to the positioning ring. The central processing unit is respectively connected to the motor and the proximity sensor. The central processing unit receives control instructions sent by the ground control cabinet, and controls the motor to drive the push rod to move upward and downward according to the control instructions. The proximity sensor collects position information of the positioning ring and transmits the position information to the central processing unit to confirm the position of the push rod.

2. The pump-under intelligent device according to claim 1, characterized in that: The pump-under-intelligent device also includes a body, which is a cylindrical rigid body. The central processor, the motor, the push rod and the positioning ring are all located on the axis of the body and are coaxial with the body.

3. The pump-down intelligent device according to claim 2, characterized in that: The upper end of the body is connected to the fixed valve under the pump through a thread, and the lower end of the body is connected to the lower oil pipe through a thread.

4. The pump-down intelligent device according to claim 3, characterized in that: The body comprises a flow passage, and the flow passage passes through the body from top to bottom.

5. The pump-under intelligent device according to claim 4, characterized in that: The proximity sensor is fixed inside the upper end of the body, close to the outer side of the push rod, and the proximity sensor corresponds to the positioning ring in the axial direction.

6. The pump-under intelligent device according to claim 5, characterized in that: The pump-under intelligent device also includes an internal temperature and pressure sensor, which is fixed to the upper end surface of the body and avoids the flow passage and the proximity sensor, and is used to test the temperature and pressure inside the oil pipe under the pump.

7. The pump-under intelligent device according to claim 2, characterized in that: The pump-under intelligent device further comprises an external temperature and pressure sensor, which is located on the outer wall of the body and is used to test the temperature and pressure outside the oil pipe.

8. The pump-under intelligent device according to claim 7, characterized in that: The pressure value measured by the external pressure sensor is P1, according to the formula P1=ρ*g*h0; wherein ρ is the density of the oil-water mixture, g is the acceleration of gravity, and h0 is the sinking degree of the position of the intelligent device under the pump; therefore, h0=P 1 / (ρ*g), and the pump sinking degree h2=h0-h1; wherein h1 is the distance between the pump and the intelligent device under the pump; the intelligent device under the pump can monitor and calculate the pump sinking degree h2 in real time.

9. The pump-under intelligent device according to claim 1, characterized in that: The pump intelligent device also includes a cable, and the central processor is connected to the ground control device through the input end of the cable; the central processor is connected to other electrical equipment underground through the output end of the cable.

10. A method for using the pump intelligent device, characterized in that: The method for using the pump-under intelligent device adopts the pump-under intelligent device according to claim 1, comprising: (1) The central processing unit reads the signal from the ground control cabinet and determines whether the signal instruction is a test or a control signal; if it is a test signal, it proceeds to step (3); if it is a control signal, it proceeds to step (2); (2) Determine whether the command is a push rod extension command or a push rod retraction command; if it is a push rod extension command, proceed to step (4); if it is a push rod retraction command, proceed to step (5); (3) The central processing unit reads the data of the proximity sensor, the internal temperature and pressure sensor, and the external temperature and pressure sensor, and sends the data to the ground control cabinet; return to step (1); (4) reading the proximity sensor signal and determining whether the push rod has been extended; if the push rod has been extended, proceeding to step (6); if the push rod has not been extended, proceeding to step (8); (5) reading the proximity sensor signal and determining whether the ejector pin has been recovered; if the ejector pin has been recovered, proceeding to step (7); if the ejector pin has not been recovered, proceeding to step (9); (6) The central processing unit sends a signal that the push rod has been extended to the ground control cabinet; (7) Sending a signal that the ejector rod has been recovered to the ground control cabinet; (8) The CPU drives the motor and the push rod extends; return to step (4); (9) Drive the motor and retract the ejector pin; return to step (5).

11. The method for using the pump intelligent device according to claim 10, characterized in that: In step 8, the central processing unit receives the push rod extension command issued by the ground control cabinet, and the central processing unit sends a command to control the movement of the motor, and the push rod moves upward to push out; the valve ball is pushed off the valve seat, and the crude oil in the pump barrel is discharged.

12. The method for using the pump intelligent device according to claim 10, characterized in that: In step 9, the central processor receives the push rod recovery command issued by the ground control cabinet, and the central processor sends a command to control the motor movement. The push rod moves downward under the drive of the motor, the valve ball under the pump falls into the valve seat, and the pump starts to work normally.

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