Hollow torque motor driven intelligent distributor with carrier and wave code communication composite

Abstract

The present invention discloses a hollow torque motor driven intelligent distributor with carrier wave and wave code communication composite, comprising a cable communication component, an electric control component, a hollow torque motor drive component, a concentric sleeve component and a support connection component; the cable communication component comprises an upper cable connector, an upper end fixing seat, an upper cable seal, a wire tube A, a wire tube B, a wire tube C, a lower cable seal, a lower end fixing seat and a lower cable connector; the electric control component comprises a main control circuit board, a circuit board shell, a sensor fixing seat, an outer tube pressure sensor, a high temperature resistant battery pack and an inner tube pressure sensor; the hollow torque motor drive component comprises a motor fixing seat, a hollow torque motor, a hollow reducer and an output flange; the concentric sleeve component comprises a rotating central tube, a valve core, a guide sleeve, a rotary valve seal, a valve body and an open screw sleeve; the support connection component comprises an upper connector, a retaining ring, an outer ring member A, a dynamic seal seat A, an outer ring member B, a dynamic seal seat B, a central tube and a lower connector.

Description

Technical Field

[0001] The present invention relates to the field of intelligent production dispensers, and more specifically to a hollow torque motor driven intelligent production dispenser with composite carrier and wave code communication. Background Art

[0002] Nowadays, most of my country's main oil fields have entered the high water content and ultra-high water content period. There are many underground oil layers, large permeability differences, complex oil and water distribution, and scattered residual oil. Therefore, there is an urgent need for stratified oil production technology that can monitor the pressure, liquid production and other parameters of each layer in real time and finely control the liquid production of each layer. However, the communication system of conventional oil well flow measurement and adjustment equipment is currently costly, has poor reliability, and cannot achieve synchronous measurement and adjustment; and the existing conventional production distribution tools have low driving power, small displacement, and poor stability, making it difficult to achieve concentric full-bore. Utility Model Content

[0003] The purpose of the present invention is to provide a hollow torque motor driven intelligent production distributor with a composite of carrier and wave code communication, integrating advanced sensor monitoring, intelligent control and other technologies to achieve stratified regulation of downhole flow, solving the problem that multi-layer section combined production of transmission technology cannot achieve stratified fine measurement and adjustment.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A hollow torque motor driven intelligent distributor with carrier and wave code communication composite, including a cable communication component, an electric control component, a hollow torque motor drive component, a concentric sleeve component and a support connection component;

[0006] The cable communication assembly includes an upper cable connector, an upper end fixing seat, an upper cable seal, a wire tube A, a wire tube B, a wire tube C, a lower cable seal, a lower end fixing seat and a lower cable connector;

[0007] The electric control assembly includes a main control circuit board, a circuit board housing, a sensor fixing seat, an external pressure sensor, a high temperature resistant battery pack and an internal pressure sensor;

[0008] The hollow torque motor drive assembly includes a motor fixing seat, a hollow torque motor, a hollow reducer, and an output flange;

[0009] The concentric sleeve assembly includes a rotating center tube, a valve core, a guide sleeve, a rotary valve seal, a valve body and an open screw sleeve;

[0010] The supporting connection assembly includes an upper joint, a retaining ring, an outer ring A, a dynamic seal seat A, an outer ring B, a dynamic seal seat B, a center tube and a lower joint;

[0011] Among them, the main frame part of the hollow torque motor driven intelligent dispenser with carrier and wave code communication composite is threadedly connected in sequence by an upper joint, an upper end fixing seat, an open screw sleeve, a valve body, an outer ring A, a motor fixing seat, an outer ring B, a sensor fixing seat, a circuit board housing, a lower end fixing seat and a lower joint;

[0012] The internal structure is mainly composed of the upper fixed seat, the retaining ring and the left end of the valve core connected in sequence, the right end of the valve core is spline-connected to the left end of the rotating center tube, and the right end of the rotating center tube, the sensor fixed seat, the center tube and the lower fixed seat are connected in sequence to ensure a tight connection without axial movement.

[0013] The transmission mechanism is connected by a hollow torque motor and a hollow reducer, the hollow reducer and the output flange are bolted, the output flange and the rotating center tube are splined, and the rotating center tube and the valve core are splined to realize the power transmission of the distributor, and finally drive the valve core to rotate to realize the valve opening adjustment;

[0014] Preferably, a rotary valve seal and a guide sleeve are connected between the valve core and the valve body to achieve sealing and valve core straightening effects;

[0015] Preferably, the dynamic seal seat A is connected to the dynamic seal seat B and the rotating central tube to ensure the sealing of both sides of the rotating central tube and the cable is prevented from rotating;

[0016] Preferably, the in-pipe pressure sensor and the out-pipe pressure sensor can respectively realize pressure monitoring and feedback inside and outside the pipe;

[0017] Preferably, the hollow torque motor can achieve large torque output and enable the inner flow channel to achieve a large diameter;

[0018] Preferably, the single-core cable transmits power while realizing two-way communication between the ground and the underground main control circuit board through carrier communication, intelligently controlling the valve opening and realizing real-time flow control, wherein voltage transmission is one-way transmission and carrier communication is two-way transmission;

[0019] Preferably, the production distributor can also realize the wave code communication mode, using the high temperature resistant battery pack for power supply and the positive pressure pulse signal transmission technology without the need for cables, and using the wellhead pressure vehicle to pressurize the pressure transmission pipeline to realize the signal transmission between the ground and the well;

[0020] The beneficial effects of the hollow torque motor driven intelligent distributor with carrier wave and wave code communication composite of the present invention are as follows:

[0021] 1. The combined use of carrier communication and wave code communication can realize real-time communication in both cable and non-cable modes, and can achieve high efficiency and high reliability in data transmission of hierarchical measurement and adjustment;

[0022] 2. The hollow torque motor and hollow reducer drive the regulating valve to realize the full-diameter and concentric structure of the tool, meeting the large-displacement flow requirements and the passage of logging tools;

[0023] 3. The hollow torque motor can achieve large torque output, greatly improving the valve switching reliability under the downhole pressure difference environment and the anti-jamming performance of complex downhole media. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Figure 1 This is the overall structure diagram of the hollow torque motor driven intelligent distributor with composite carrier and wave code communication.

[0026] Figure 2 This is the block diagram of the carrier communication principle.

[0027] Figure 3 This is the block diagram of the wave code communication principle.

[0028] Figure 4 Schematic diagram of the carrier communication process column.

[0029] Figure 5 This is a schematic diagram of the wave code communication process column.

[0030] Figure 6 It is a schematic diagram of the hydraulic sleeve structure.

[0031] In the figure: 1. Upper joint; 2. Upper cable joint; 3. Upper end fixing seat; 4. Upper cable seal; 5. Retaining ring; 6. Wire tube A; 7. Valve core; 8. Guide sleeve; 9. Rotary valve seal; 10. Opening screw sleeve; 11. Wire tube B; 12. Dynamic seal seat A; 13. Output flange; 14. Rotating center tube; 15. Motor fixing seat; 16. Outer ring B; 17. Dynamic seal seat B; 18. Wire tube C; 19. Sensor fixing seat; 20. Outer tube pressure sensor; 21. Main control circuit board; 22. Center tube; 23. Lower end fixing seat; 24. Lower cable seal; 25. Lower joint; 26. Lower cable joint; 27. Circuit board housing; 28. High temperature resistant battery pack; 29. ​​Inner tube pressure sensor; 30. Hollow torque motor; 31. Hollow reducer; 32. Outer ring A; 33. Valve body;

[0032] 1-1, carrier DC coupling; 1-2, carrier DC separation;

[0033] 2-1, host computer; 2-2, ground central control system; 2-3, underground central control system; 2-4, underground high temperature battery; 2-5, underground flow measurement and control device;

[0034] 3-1, ground control box; 3-2, steel armored cable; 3-3, sucker rod; 3-4, production pump; 3-5, oil pipe; 3-6, production distributor; 3-7, cable packer;

[0035] 4-1, pump truck; 4-2, hydraulic pipe; 4-3, hydraulic pipeline; 4-4, production pump; 4-5, oil pipe; 4-6, hydraulic sliding sleeve; 4-7, production distributor; 4-8, packer;

[0036] 4-61, pressure tube; 4-62, inner tube of sliding sleeve; 4-63, piston; 4-64, spring assembly. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] like Figure 1 As shown, the hollow torque motor driven intelligent distributor with carrier and wave code communication composite of the present invention includes a cable communication component, an electric control component, a hollow torque motor drive component, a concentric sleeve component and a support connection component; wherein the cable communication component includes an upper cable connector 2, an upper end fixing seat 3, an upper cable seal 4, a wire tube A6, a wire tube B11, a wire tube C18, a lower cable seal 24, a lower end fixing seat 23 and a lower cable connector 26; the electric control component includes a main control circuit board 21, a circuit board housing 27, a sensor fixing seat 19 , an outer tube pressure sensor 20, a high temperature resistant battery pack 28 and an inner tube pressure sensor 29; the hollow torque motor drive assembly includes a motor fixing seat 15, a hollow torque motor 30, a hollow reducer 31, and an output flange 13; the concentric sleeve assembly includes a rotating central tube 14, a valve core 7, a guide sleeve 8, a rotary valve seal 9, a valve body 33 and an open screw sleeve 10; the supporting connection assembly includes an upper joint 1, a retaining ring 5, an outer ring A31, a dynamic seal seat A12, an outer ring B16, a dynamic seal seat B17, a central tube 22 and a lower joint 25;

[0039] Among them, the main frame part of the hollow torque motor driven intelligent dispenser with carrier and wave code communication composite is threadedly connected in sequence by the upper joint 1, the upper end fixing seat 3, the open screw sleeve 10, the valve body 33, the outer ring A32, the motor fixing seat 15, the outer ring B16, the sensor fixing seat 19, the circuit board shell 27, the lower end fixing seat 23 and the lower joint 25; the internal structure is mainly connected in sequence by the upper end fixing seat 3, the retaining ring 5 and the left end of the valve core 7, and the right end of the valve core 7 is splined with the left end of the rotating center tube 14 The right end of the rotating center tube 14, the sensor fixing seat 19, the center tube 22 and the lower end fixing seat 23 are connected in sequence to ensure a tight connection without axial movement; the transmission mechanism is connected by a hollow torque motor 30 and a hollow reducer 31, the hollow reducer 31 is bolted to the output flange 13, the output flange 13 is splined to the rotating center tube 14, and the rotating center tube 14 is splined to the valve core 7 to realize the power transmission of the distributor, and finally drive the valve core 7 to rotate to realize the valve opening adjustment;

[0040] A rotary valve seal 9 is connected between the valve core 7 and the valve body 33, and sealing is achieved by interference fit between the valve core 7 and the rotary valve seal 9; the guide sleeve 8 is used to straighten the valve core 7; the valve core 7 adopts a symmetrical trapezoidal valve port, which can not only prevent the occurrence of scaling, siltation and the like underground, but also meet the requirements of fine flow control.

[0041] The dynamic seal seat A12 is connected to the dynamic seal seat B17 and the rotating central tube 14 to ensure the tightness of both sides of the rotating central tube 14 and the anti-rotation seal of the cable, thereby preventing leakage from damaging the main control circuit board 21 and other electrical components;

[0042] The in-pipe pressure sensor 29 and the out-pipe pressure sensor 20 can respectively monitor and feedback the pressure inside and outside the pipe, and the values ​​are finally fed back to the well control system;

[0043] The hollow torque motor 30 can achieve large torque output, ensuring normal opening under large pressure difference between inside and outside of the downhole production distributor, and improving the anti-jamming performance of complex downhole media; the hollow structure of the production distributor realizes a large diameter and concentric structure of the tool, meeting the large displacement flow requirements and the passage of logging tools;

[0044] The single-core cable transmits power while realizing two-way communication between the ground and the underground main control circuit board through carrier communication, intelligently controlling the valve opening and realizing real-time flow control; the distributor can also realize wave code communication, using the high temperature resistant battery pack 28 for power supply and positive pressure pulse signal transmission technology without cables, and only using the central pipeline fluid to realize signal transmission between the ground and the underground;

[0045] like Figure 2As shown, in the carrier DC coupling 1-1 process: the serial port data is sent to the carrier circuit, the carrier circuit generates continuous 1200HZ and 2200HZ sine wave signals through 1, 0 data and sends them to the carrier voltage synthesis circuit, the power supply generates a DC voltage and sends it to the carrier voltage synthesis circuit, the DC voltage and the carrier are coupled in the carrier synthesis circuit to generate a DC + carrier signal;

[0046] In the carrier-DC separation 1-2 process: the carrier synthesis and separation circuit receives the DC + carrier signal to separate the DC voltage from the carrier, the voltage is used for equipment power supply and working use, and the carrier signal enters the carrier circuit, converts the carrier signal into serial port data to realize data transmission;

[0047] like Figure 3 As shown, the ground central control system 2-2 has the following functions: realizing the transmission of downward positive pressure pulses, encoding and modulating software design of ground positive pressure pulses; realizing dynamic measurement of flow, hardware design of pressure pulse signal acquisition, and signal processing such as acquisition and filtering of pressure pulse signals;

[0048] The underground central control system 2-3 is used as a communication transfer station to realize the intermediate transfer function of data during the communication process, and realizes the transmission of the ground central control system command through RS485. It has the following functions: dynamic measurement and adaptive decoding of downward pressure pulse and duration to complete the transmission of ground commands; pressure pulse and duration signal acquisition and processing circuit design and pressure pulse and duration signal acquisition and filtering and other signal processing; and includes data decoding software design to realize the software and hardware design of communication with the underground valve regulating controller 1-5 to complete the issuance of commands;

[0049] In the actual wave code communication mode, the control command is transmitted unidirectionally in the form of pressure pulse and duration, and the underground central control system 2-3 is powered by the underground high-temperature battery 2-4. The host computer 2-1 is connected to the ground central control system 2-2 through the 485 interface, and the underground valve adjustment 1-5 controller is connected to the underground central control system 2-3 through the RS485 interface. Each ground central control system 2-2 communicates with an underground central control system 2-3 and a valve adjustment controller 2-5 to realize the hierarchical control process based on pressure pulses.

[0050] like Figure 4 The figure shows a schematic diagram of a process string in a carrier communication mode. The downhole oil pipe 3-5, the production distributor 3-6 and the packer 3-7 are connected in sequence to form a tool string. The ground part is connected by a sucker rod 3-3 and a production pump 3-4 to form an oil production tool. The steel armor cable 3-2 is connected to the production distributor 3-6 and the cable packer 3-7 in sequence. The ground control box 3-1 provides power to the downhole intelligent tool through the steel armor cable 3-2 and sends a carrier signal at the same time. The production distributor 3-6 receives the carrier signal to adjust the flow of the production distributor.

[0051] Combination Figure 5 and Figure 6 In the wave code communication process string, the pump truck 4-1 performs a pressure operation on the hydraulic sleeve 4-6 through the hydraulic pipe 4-2 and the hydraulic pipeline 4-3. The hydraulic sleeve 4-6, the distributor 4-7, and the packer 4-8 are connected through the oil pipe 4-5 to form a tool string; in the structural diagram of the hydraulic sleeve 4-6, the oil pump truck 4-1 presses the liquid into the sleeve ring cavity through the pressure pipe 4-61, pushing the piston 4-63 and the spring assembly 4-64 to move to the right, so that the hole of the sleeve inner tube 4-62 is open, and the liquid enters the downhole tool string oil pipe through the hole to realize wave code communication. When the pump truck 4-1 stops pressurizing, the spring assembly 4-64 pushes the piston 4-63 to move to the left to close the hole on the sleeve inner tube 4-62; the distributor 4-7 receives the liquid pressure pulse signal to control the flow.

[0052] The process string can realize layered control of production distributors in at least five layers downhole;

[0053] In the actual operation of a hollow torque motor driven intelligent production distributor with carrier and wave code communication composite, energy is continuously supplied by a single-core cable, so that the intelligent production distributor can work continuously and stably underground, and can transmit signals through carrier communication through the cable, and can also communicate with the wave code communication mode in a composite manner, and use positive pressure pulse signal transmission technology without cables to pressurize the hydraulic pipeline through the ground wellhead pump truck to realize signal transmission between the ground and the underground. The intelligent production distributor is placed in a predetermined working position by using a continuous oil pipe or other means, and the hollow torque motor 30 receives the instruction, and transmits the power to the rotating center tube 14 through the hollow reducer 31 and the output flange 13. The rotating center tube 14 is splined with the valve core 7 to rotate the valve core 7, change the valve port circumferential angle of the valve core 7, and realize fine control of the flow rate of different valve port openings. The rotary valve seal 9 and the guide sleeve 8 installed between the valve core 7 and the valve body 33 can realize effective sealing and straighten the valve core 7, and finally realize accurate flow regulation.

[0054] The above-mentioned specific implementation is 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 hollow torque motor driven intelligent distributor with carrier and wave code communication composite, characterized by: It includes cable communication components, electric control components, hollow torque motor drive components, concentric sleeve components and support connection components; The cable communication assembly comprises an upper cable connector (2), an upper end fixing seat (3), an upper cable seal (4), a wire tube A (6), a wire tube B (11), a wire tube C (18), a lower cable seal (24), a lower end fixing seat (23) and a lower cable connector (26); The electric control assembly comprises a main control circuit board (21), a circuit board housing (27), a sensor fixing seat (19), an external tube pressure sensor (20), a high temperature resistant battery pack (28) and an internal tube pressure sensor (29); The hollow torque motor drive assembly comprises a motor fixing seat (15), a hollow torque motor (30), a hollow reducer (31), and an output flange (13); The concentric sleeve assembly comprises a rotating central tube (14), a valve core (7), a guide sleeve (8), a rotary valve seal (9), a valve body (33) and an open threaded sleeve (10); The supporting connection assembly comprises an upper joint (1), a retaining ring (5), an outer ring member A (32), a dynamic seal seat A (12), an outer ring member B (16), a dynamic seal seat B (17), a center tube (22) and a lower joint (25); The main frame of the hollow torque motor driven intelligent dispensing device with carrier and wave code communication composite is composed of: an upper joint (1), an upper end fixing seat (3), an open screw sleeve (10), a valve body (33), an outer ring member A (32), a motor fixing seat (15), an outer ring member B (16), a sensor fixing seat (19), a circuit board housing (27), a lower end fixing seat (23) and a lower joint (25), which are threadedly connected in sequence; The internal structure mainly comprises an upper end fixing seat (3), a retaining ring (5) and a left end of a valve core (7) connected in sequence, a right end of the valve core (7) being spline-connected to a left end of a rotating center tube (14), and a right end of the rotating center tube (14), a sensor fixing seat (19), a center tube (22) and a lower end fixing seat (23) being connected in sequence, thereby ensuring a tight connection without axial movement; The transmission mechanism is composed of a hollow torque motor (30) connected to a hollow reducer (31), the hollow reducer (31) is bolted to an output flange (13), the output flange (13) is spline-connected to a rotating center tube (14), and the rotating center tube (14) is spline-connected to a valve core (7), thereby realizing power transmission of the distributor and finally driving the valve core (7) to rotate to realize valve opening control.

2. The carrier wave and wave code communication composite hollow torque motor driven intelligent distributor according to claim 1, characterized in that: A rotary valve seal (9) and a guide sleeve (8) are connected between the valve core (7) and the valve body (33) to achieve sealing and straightening of the valve core (7).

3. The carrier wave and wave code communication composite hollow torque motor driven intelligent distributor according to claim 1, characterized in that: The dynamic seal seat A (12) is connected to the dynamic seal seat B (17) and the rotating central tube (14) to ensure sealing on both sides of the rotating central tube (14) and to prevent the cable from rotating.

4. The carrier wave and wave code communication composite hollow torque motor driven intelligent distributor according to claim 3, characterized in that: The in-pipe pressure sensor (29) and the out-pipe pressure sensor (20) can respectively implement pressure monitoring and feedback inside and outside the pipe.

5. The hollow torque motor driven intelligent dispensing device with composite carrier and wave code communication according to claim 4 is characterized in that: The hollow torque motor (30) can achieve high torque output and enable the inner flow channel to achieve a large diameter.

6. The hollow torque motor driven intelligent dispensing device with carrier wave and wave code communication composite according to claim 4 is characterized in that: While the single-core cable transmits electricity, it also realizes two-way communication between the ground and the underground main control circuit board through carrier communication, intelligently controls the valve opening, and realizes real-time flow control. The voltage transmission is unidirectional, and the carrier communication is bidirectional.

7. The hollow torque motor driven intelligent dispensing device with carrier wave and wave code communication composite according to claim 4 is characterized by: The production distributor can also realize wave code communication mode, using high temperature resistant battery pack for power supply and positive pressure pulse signal transmission technology without cables, and using wellhead pressure vehicle to pressurize the pressure transmission pipeline to realize signal transmission between the ground and underground.

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