Wheel-type sliding sleeve based annulus flow passage fluid control valve and method of use
Patent Information
- Application Number
- CN202311844643.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2043-12-29
AI Technical Summary
[0004]基于上述背景技术存在的问题,本发明旨在提供了一种基于轮型滑套的环空流道流体控制阀及其使用方法,解决现有的流体控制阀无法实现开度无级调节和精确检测的问题
[0026] The beneficial effects of this invention are as follows: The annular flow channel fluid control valve of this invention can simultaneously achieve fracturing and throttling operations under high temperature and high pressure in each production layer of a horizontal well. Under throttling conditions, it can be combined with the automatic opening adjustment method of the fluid control valve, using measuring elements such as displacement sensors to measure the sliding distance and position of the wheel-type sliding sleeve, and perform stepless adjustment of the throttling orifice opening to achieve control of the flow rate of each production layer. The opening control of this fluid control valve is precise, which can provide the equipment foundation for intelligent control of the flow rate of each production layer in the balanced production of horizontal wells in my country.
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Figure CN117846543B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of natural gas and oil development, and in particular relates to an annular flow channel fluid control valve based on a wheel-type sliding sleeve and its usage method. Background Technology
[0002] As oil and gas development deepens, the length of horizontal wells gradually increases, and the downhole environment becomes increasingly harsh. Under the influence of formation pressure, fluid properties, and environmental factors, uneven production of different production zones in horizontal wells is easily caused. To slow down the bottom water coning velocity in each production zone of a horizontal well, improve well life, and increase oil and gas production efficiency, intelligent completion technology has been extensively researched. Fluid control valves are the core equipment of intelligent completion technology and the main actuators for controlling the flow rate of production zones; typically, one valve is placed in each production zone of the horizontal well. Addressing the current lack of active control technology and methods for balanced production in horizontal wells, patents CN116401967A and CN116595764A propose theoretical control methods for each production zone in horizontal wells. However, existing fluid control valves lack sufficient opening precision, cannot fully integrate with the balanced production control methods for horizontal wells to accurately control each production zone, and cannot simultaneously achieve fracturing and throttling. For example, patent CN212898380U describes a fluid control valve for downhole stratified oil production. It controls flow rate by changing the size of the fluid channel in a sand filter screen. However, the sand filter screen needs to be replaced for different production layers, and the flow channel size cannot be adjusted in real time. Patent CN204552714U describes an adjustable horizontal well completion choke stop that uses a ball seat 12 for ball-dropping operations. It controls the sliding between the inner tube 2 and the outer tube 11 by controlling pressure, thereby adjusting the number of one-way valve outlets between the inner and outer tubes to change the flow area. However, this adjustable horizontal well completion choke stop has low control accuracy and a limited flow control range. Neither of these patents can achieve stepless adjustment and precise detection of the opening degree.
[0003] Therefore, to integrate the fluid control valve opening adjustment method for each production layer in horizontal well balanced production, an annular flow channel fluid control valve based on a wheel-type sliding sleeve is designed. This valve can effectively improve the control accuracy of balanced production by combining it with the balanced production control method, and can realize stepless adjustment and switching between fracturing and throttling conditions. It can effectively slow down the bottom water coning velocity in each production layer of the horizontal well and improve oil production efficiency. Summary of the Invention
[0004] Based on the problems existing in the above-mentioned background technology, the present invention aims to provide an annular flow channel fluid control valve based on a wheel-shaped sliding sleeve and its usage method, so as to solve the problem that existing fluid control valves cannot achieve stepless adjustment of opening degree and accurate detection.
[0005] The embodiments of the present invention are implemented as follows:
[0006] This invention provides an annular flow channel fluid control valve based on a wheel-shaped sliding sleeve, which includes a control hydraulic cylinder, the control hydraulic cylinder comprising an outer cylinder portion and an inner cylinder portion; one end of the outer cylinder portion is threadedly connected to a control outer cylinder.
[0007] The outer cylinder is connected in sequence to an annular flow channel connector, a flow channel conversion cylinder, and a sub-connector; a flow channel is provided inside the annular flow channel connector;
[0008] One end of the inner cylinder passes through the control outer cylinder and is threadedly connected to the inner wall of the annular flow channel joint; a sealing plug is provided at the end of the inner cylinder.
[0009] The other end of the outer cylinder is threadedly connected to the inner cylinder of the sliding sleeve. The end of the inner cylinder of the sliding sleeve is threadedly connected to the outer cylinder of the sliding sleeve through a throttling-fracturing converter. The inner cylinder of the sliding sleeve is provided with fracturing holes and throttling holes for communicating with the external environment. The end of the outer cylinder of the sliding sleeve is connected to a female connector.
[0010] An annular flow channel is provided between the outer cylinder section and the inner cylinder section, and the annular flow channel is connected to the control outer cylinder and the sliding inner cylinder.
[0011] The inner cylinder is equipped with a guide rod and a drive device for driving the axial displacement of the guide rod. The inner cylinder of the sliding sleeve is equipped with a wheel-shaped sliding sleeve. The end of the guide rod is connected to the wheel-shaped sliding sleeve. The wheel-shaped sliding sleeve is provided with a hollowed-out area for fluid to flow through. The wheel-shaped sliding sleeve is driven to slide along the axial direction of the inner cylinder of the sliding sleeve. The outer wall of the wheel-shaped sliding sleeve is used to cover the fracturing hole and the throttling hole.
[0012] The inner cylinder is equipped with a pressure sensor for monitoring the pressure inside the fluid channel and a temperature sensor for monitoring the temperature of the fluid inside the fluid channel; a displacement sensor for monitoring the displacement of the guide rod is installed inside the inner cylinder; the inner cylinder is also equipped with a data transmission device electrically connected to the pressure sensor, temperature sensor and displacement sensor, and the data transmission device is electrically connected to the ground control center.
[0013] As an optional embodiment of the above, an inner channel is provided inside one end of the inner cylinder. A power supply, a circuit board and a controller are provided inside the inner channel. A sealing plug is provided at the opening of the inner channel. The pressure sensor and the temperature sensor are both electrically connected to the controller.
[0014] As an optional embodiment of the above, a plurality of mounting slots are provided on the outer circumferential wall of the inner cylinder, and an optical fiber is provided in each mounting slot. Each optical fiber is electrically connected to the controller and the ground control center. An optical fiber cover plate is sealed at the opening of each mounting slot.
[0015] As an optional embodiment of the above, the inner cylinder portion is provided with a groove; the driving device includes a motor disposed in the groove, and the output end of the motor is connected to a hydraulic pump through a coupling; a motor valve cover plate is sealed at the opening of the groove, and a through hole communicating with the inner channel is provided on one side of the groove; a power line and a control line are provided on the motor, and the power line and control line pass through the through hole and are electrically connected to the power supply and the controller, respectively.
[0016] An oil cavity is provided inside the other end of the inner cylinder, and a hydraulic pusher is provided in the oil cavity. The guide rod is located in the oil cavity, and the hydraulic pusher is connected to the guide rod located in the oil cavity. At least two oil passages are also provided in the inner cylinder. One end of each of the two oil passages is connected to the oil cavities on both sides of the hydraulic pusher, and the other end of each of the two oil passages is connected to the hydraulic pump.
[0017] As an optional embodiment of the above, the displacement sensor is disposed on the bottom surface of the inner channel.
[0018] As an optional embodiment of the above, one end of the oil chamber is provided with a hydraulic plug, and one end of the guide rod passes through the hydraulic plug and is fixedly connected to the center of the wheel-shaped sliding sleeve.
[0019] As an optional embodiment of the above, the diameter of the outer cylinder portion is 90mm to 110mm larger than the diameter of the inner cylinder portion, and the length of the outer cylinder portion is 0.5 to 0.75 times the length of the inner cylinder portion; the outer cylinder portion is fitted onto the outer circumferential wall of the inner cylinder portion through an annular sleeve, and multiple annular flow channels are provided inside the annular sleeve.
[0020] The present invention also provides a method of using an annular flow channel fluid control valve, the method comprising the following steps:
[0021] Step 1: Place the annular flow channel fluid control valve downhole, with the wheel-shaped sliding sleeve simultaneously shielding the fracturing orifice and the choke orifice;
[0022] Step 2: Perform fracturing operation: The ground control center controls the drive device to drive the guide rod to slide axially inside the inner cylinder. The guide rod drives the wheel-shaped sliding sleeve to slide axially along the inner cylinder of the sleeve until the wheel-shaped sliding sleeve releases the fracturing hole, completely covering the throttling hole, and the fracturing fluid flows out from the fracturing hole, thus meeting the fracturing operation conditions.
[0023] Step 3: Pressure and temperature sensors collect pressure and temperature data of the fluid and transmit the data to the ground control center via a data transmission device. The ground control center then predicts the production output based on the received pressure and temperature data of the fluid.
[0024] Step 4: Perform throttling operation: Based on the fluid pressure, temperature and predicted production data, calculate the required opening size of the fluid control valve during balanced mining: The ground control center controls the drive device to drive the guide rod to move the wheel-shaped sliding sleeve along the axial direction of the inner cylinder of the sliding sleeve until the wheel-shaped sliding sleeve completely covers the fracturing hole, and adjusts the position of the wheel-shaped sliding sleeve according to the required opening size of the fluid control valve to achieve the required opening size of the throttling orifice, so that oil or gas flows into the valve from the throttling orifice;
[0025] Step 5: After the throttling operation is completed, the ground control center controls the drive device to drive the guide rod to move the wheel-shaped sliding sleeve along the axial direction of the inner cylinder of the sleeve until the wheel-shaped sliding sleeve completely covers the fracturing hole and the throttling hole, and the fluid control valve is closed.
[0026] The beneficial effects of this invention are as follows: The annular flow channel fluid control valve of this invention can simultaneously achieve fracturing and throttling operations under high temperature and high pressure in each production layer of a horizontal well. Under throttling conditions, it can be combined with the automatic opening adjustment method of the fluid control valve, using measuring elements such as displacement sensors to measure the sliding distance and position of the wheel-type sliding sleeve, and perform stepless adjustment of the throttling orifice opening to achieve control of the flow rate of each production layer. The opening control of this fluid control valve is precise, which can provide the equipment foundation for intelligent control of the flow rate of each production layer in the balanced production of horizontal wells in my country. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the accompanying drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main points of the invention.
[0028] Figure 1 This is a schematic diagram of the internal cross-sectional structure of an annular flow channel fluid control valve based on a wheel-shaped sliding sleeve.
[0029] Figure 2 A three-dimensional structural diagram for controlling the hydraulic cylinder.
[0030] Figure 3 This is a three-dimensional structural diagram of the inner cylinder of the sliding sleeve.
[0031] Figure 4 for Figure 1 Enlarged view of the fluid control valve in the closed state of section C.
[0032] Figure 5 for Figure 1Enlarged cross-sectional view of the inner cylinder of the hydraulic cylinder in section A.
[0033] Figure 6 for Figure 1 Enlarged cross-sectional view of the outer cylinder of the hydraulic cylinder in section B.
[0034] Figure 7 This is a schematic diagram of the structure of a fluid control valve under fracturing conditions.
[0035] Figure 8 This is a schematic diagram of the structure of a fluid control valve under throttling conditions.
[0036] Figure 9 This is a three-dimensional structural diagram of the annular flow channel joint.
[0037] Figure 10 This is a three-dimensional structural diagram of a wheel-shaped sliding sleeve.
[0038] Among them, 1-sub-connector, 2-flow channel conversion cylinder, 3-annular flow channel connector, 4-sealing plug, 5-pressure sensor, 6-control outer cylinder, 7-control hydraulic cylinder, 8-displacement sensor, 9-fiber optic cover plate, 10-fiber optic cable, 11-motor, 12-motor valve cover plate, 13-coupling, 14-hydraulic pump, 15-hydraulic pusher, 16-guide rod, 17-hydraulic plug, 18-sliding sleeve inner cylinder, 19-... - Sliding sleeve outer cylinder, 20- Throttling-fracturing conversion cylinder, 21- Wheel-type sliding sleeve, 22- Female connector, 23- Annular sleeve, 301- Flow channel, 701- Inner cylinder part, 702- Outer cylinder part, 703- Inner channel, 704- Through hole, 705- Groove, 706- Annular flow channel, 707- Oil cavity, 708- Oil passage, 1801- Fracturing hole, 1802- Throttling hole, 2101- Hollowed-out section. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0042] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0043] Please Figure 1 As shown, the present invention provides an annular flow channel fluid control valve based on a wheel-shaped sliding sleeve, which includes a control hydraulic cylinder 7, such as... Figure 2 As shown, the control hydraulic cylinder 7 includes an outer cylinder portion 702 and an inner cylinder portion 701; one end of the outer cylinder portion 702 is threadedly connected to the control outer cylinder 6.
[0044] The outer cylinder 6 is connected in sequence to an annular flow channel connector 3, a flow channel conversion cylinder 2, and a sub-connector 1; for example Figure 3 and Figure 9 As shown, a flow channel 301 is provided inside the annular flow channel connector 3; one end of the inner cylinder portion 701 passes through the control outer cylinder 6 and is threadedly connected to the inner wall of the annular flow channel connector 3, and a sealing plug 4 is provided at the end of the inner cylinder portion 701. The other end of the outer cylinder portion 702 is threadedly connected to a sliding inner cylinder 18, and the end of the sliding inner cylinder 18 is threadedly connected to a sliding outer cylinder 19 through a throttling-fracturing conversion cylinder 20. The sliding inner cylinder 18 is provided with a fracturing hole 1801 and a throttling hole 1802 for communicating with the external environment; a female connector 22 is connected to the end of the sliding outer cylinder 19.
[0045] like Figure 1 , Figure 2 and Figure 6 As shown, an annular flow channel 706 is provided between the outer cylinder portion 702 and the inner cylinder portion 701, and the annular flow channel 706 is connected to the control outer cylinder 6 and the sliding inner cylinder 18.
[0046] The diameter of the outer cylinder portion 702 is 90mm to 110mm larger than the diameter of the inner cylinder portion 701, and the length of the outer cylinder portion 702 is 0.5 to 0.75 times the length of the inner cylinder portion 701. The outer cylinder portion 702 is mounted on the outer circumferential wall of the inner cylinder portion 701 through an annular sleeve 23, and multiple annular flow channels 706 are provided inside the annular sleeve 23.
[0047] like Figure 5 As shown, the inner cylinder portion 701 is equipped with a guide rod 16 and a driving device for driving the axial displacement of the guide rod 16. The inner cylinder 18 of the sliding sleeve is equipped with a wheel-shaped sliding sleeve 21. The end of the guide rod 16 is connected to the wheel-shaped sliding sleeve 21. Figure 10As shown, the wheel-shaped sleeve 21 has a perforated area 2101 for fluid flow. Specifically, the wheel-shaped sleeve 21 has a circular cylindrical structure, and a connecting post is provided inside the wheel-shaped sleeve 21. The connecting post is fixedly connected to the inner circumference of the wheel-shaped sleeve 21 through the spokes. The perforated area 2101 is between two adjacent spokes. Preferably, but not limited to, the spokes are chamfered to reduce fluid resistance during movement and fluid erosion.
[0048] The drive wheel-shaped sliding sleeve 21 slides axially along the inner cylinder 18 of the sliding sleeve, and the outer wall of the wheel-shaped sliding sleeve 21 is used to cover the fracturing hole 1801 and the throttling hole 1802.
[0049] like Figure 5 As shown, the inner cylinder 701 is equipped with a pressure sensor 5 for monitoring the pressure inside the fluid channel and a temperature sensor for monitoring the temperature of the fluid inside the fluid channel; the inner cylinder 701 is equipped with a displacement sensor 8 for monitoring the displacement of the guide rod 16; the inner cylinder 701 is also equipped with a data transmission device electrically connected to the pressure sensor 5, the temperature sensor and the displacement sensor 8, and the data transmission device is electrically connected to the ground control center.
[0050] The data transmission device includes a power supply, a circuit board, a controller, and an optical fiber 10. The specific arrangement of the data transmission device on the inner cylinder section 701 is as follows: Figure 5 As shown, an inner channel 703 is formed inside one end of the inner cylinder portion 701. A power supply, circuit board, and controller are housed inside the inner channel 703. A sealing plug 4 is provided at the opening of the inner channel 703. The pressure sensor 5, displacement sensor 8, and temperature sensor are all electrically connected to the controller. The displacement sensor 8 is located on the bottom surface of the inner channel 703.
[0051] The inner cylinder 701 has multiple mounting slots on its outer circumferential wall. Each mounting slot contains an optical fiber 10, and each optical fiber 10 is electrically connected to the controller and the ground control center. Each mounting slot opening is sealed with an optical fiber cover plate 9.
[0052] like Figures 4-6 As shown, as a specific arrangement of the driving device inside the inner cylinder 701, the inner cylinder 701 has a groove 705; the driving device includes a motor 11 disposed in the groove 705, and the output end of the motor 11 is connected to a hydraulic pump 14 through a coupling 13; a motor valve cover plate 12 is sealed at the opening of the groove 705, and a through hole 704 communicating with the inner channel 703 is provided on one side of the groove 705; a power line and a control line are provided on the motor 11, and the power line and control line pass through the through hole 704 and are electrically connected to the power supply and the controller, respectively;
[0053] An oil cavity 707 is provided inside the other end of the inner cylinder portion 701. A hydraulic pusher 15 is installed in the oil cavity 707, and a guide rod 16 is partially installed in the oil cavity 707. The hydraulic pusher 15 is connected to the guide rod 16 located in the oil cavity 707. At least two oil passages 708 are also provided inside the inner cylinder portion 701. One end of each of the two oil passages 708 is connected to the oil cavities 707 on both sides of the hydraulic pusher 15, and the other end of each of the two oil passages 708 is connected to the hydraulic pump 14. A hydraulic plug 17 is provided at one end of the oil cavity 707, and one end of the guide rod 16 passes through the hydraulic plug 17 and is fixedly connected to the center of the wheel-shaped sliding sleeve 21.
[0054] The hydraulic pump 14 supplies different amounts of hydraulic oil to the left and right sides of the hydraulic pusher 15 in the oil chamber 707 through two oil passages 708, so as to realize the axial reciprocating motion of the hydraulic pusher 15 in the oil chamber 707, so as to control the hydraulic pusher 15 to move a specific distance to reach a designated position, thereby driving the guide rod 16 to drive the wheel-shaped sliding sleeve 21 to slide along the axial direction of the inner sleeve cylinder 18 for the purpose of shielding or opening the fracturing hole 1801 and the throttling hole 1802, so as to meet the fracturing and throttling conditions. During throttling or fracturing, the fluid flows through the annular flow channel 706 in the outer cylinder part 702, the outer surface of the inner cylinder part 701 and the flow channel of the annular flow channel joint 3.
[0055] The displacement sensor 8 measures the movement distance and position of the hydraulic pusher 15 when it is fully closed, fracturing, and controlling the opening of the throttle orifice 1802, in order to control the position of the guide rod 16 and the wheel-shaped sleeve 21 at the end of the guide rod 16 inside the inner cylinder portion 701. The displacement sensor 8 can be replaced by other displacement sensors of the same type, including but not limited to magnetostrictive sensors.
[0056] The present invention also provides a method of using an annular flow channel fluid control valve, the method comprising the following steps:
[0057] Step 1: Place the annular flow channel fluid control valve downhole, and the wheel-shaped sliding sleeve 21 simultaneously shields the fracturing hole 1801 and the throttle hole 1802;
[0058] Step 2: As Figure 7 As shown, the fracturing operation is performed as follows: the ground control center controls the drive device to drive the guide rod 16 to slide axially inside the inner cylinder 701. The guide rod 16 drives the wheel-shaped sliding sleeve 21 to slide axially along the inner cylinder 18 of the sliding sleeve until the wheel-shaped sliding sleeve 21 releases the fracturing hole 1801, completely covering the throttling hole 1802, and the fracturing fluid flows out from the fracturing hole 1801, which meets the fracturing operation conditions.
[0059] Step 3: Pressure sensor 5 and temperature sensor collect pressure and temperature data of the fluid and transmit the pressure and temperature data to the ground control center through a data transmission device. The ground control center predicts the output based on the received pressure and temperature data of the fluid.
[0060] Step 4: As Figure 8 As shown, the throttling operation is performed: based on the fluid pressure, temperature and predicted production data, the required opening of the fluid control valve during balanced mining is calculated: the ground control center controls the drive device to drive the guide rod 16 to drive the wheel-shaped sliding sleeve 21 to slide along the axial direction of the inner cylinder 18 of the sliding sleeve until the wheel-shaped sliding sleeve 21 completely covers the fracturing hole 1801, and adjusts the position of the wheel-shaped sliding sleeve 21 according to the required opening of the fluid control valve to adjust the throttling hole 1802 to the required opening size, so that oil or gas flows into the valve from the throttling hole 1802;
[0061] Step 5: After the throttling operation is completed, the ground control center controls the drive device to drive the guide rod 16 to drive the wheel-shaped sliding sleeve 21 to slide along the axial direction of the inner cylinder 18 of the sliding sleeve until the wheel-shaped sliding sleeve 21 completely covers the fracturing hole 1801 and the throttling hole 1802, and the fluid control valve is closed.
[0062] In summary, the present invention provides a fluid control valve for annular flow channels based on a wheel-shaped sliding sleeve and its usage method, which can simultaneously achieve fracturing and throttling operations under high temperature and high pressure in various production layers of horizontal wells. Under throttling conditions, the automatic opening adjustment method of the fluid control valve can be combined with the measurement elements such as displacement sensor 8 to measure the sliding distance and position of the wheel-shaped sliding sleeve 21, and the opening of the throttling orifice 1802 can be steplessly adjusted to achieve flow control in each production layer. The opening control of this fluid control valve is precise and can provide an equipment foundation for intelligent control of flow in various production layers in the balanced production of horizontal wells in my country.
[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A fluid control valve based on a wheel-shaped sliding sleeve with an annular flow channel, characterized in that, The system includes a control hydraulic cylinder, which comprises an outer cylinder portion and an inner cylinder portion; one end of the outer cylinder portion is threadedly connected to a control outer cylinder. The outer cylinder is connected in sequence to an annular flow channel connector, a flow channel conversion cylinder, and a sub-connector; a flow channel is provided inside the annular flow channel connector; One end of the inner cylinder passes through the control outer cylinder and is threadedly connected to the inner wall of the annular flow channel joint; a sealing plug is provided at the end of the inner cylinder. The other end of the outer cylinder is threadedly connected to the inner cylinder of the sliding sleeve. The end of the inner cylinder of the sliding sleeve is threadedly connected to the outer cylinder of the sliding sleeve through a throttling-fracturing converter. The inner cylinder of the sliding sleeve is provided with fracturing holes and throttling holes for communicating with the external environment. The end of the outer cylinder of the sliding sleeve is connected to a female connector. An annular flow channel is provided between the outer cylinder section and the inner cylinder section, and the annular flow channel is connected to the control outer cylinder and the sliding inner cylinder. The inner cylinder is equipped with a guide rod and a drive device for driving the axial displacement of the guide rod. The inner cylinder of the sliding sleeve is equipped with a wheel-shaped sliding sleeve. The end of the guide rod is connected to the wheel-shaped sliding sleeve. The wheel-shaped sliding sleeve is provided with a hollowed-out area for fluid to flow through. The wheel-shaped sliding sleeve is driven to slide along the axial direction of the inner cylinder of the sliding sleeve. The outer wall of the wheel-shaped sliding sleeve is used to cover the fracturing hole and the throttling hole. The inner cylinder is equipped with a pressure sensor for monitoring the pressure within the fluid channel and a temperature sensor for monitoring the temperature of the fluid within the fluid channel; a displacement sensor for monitoring the displacement of the guide rod is installed inside the inner cylinder; the inner cylinder is also equipped with a data transmission device electrically connected to the pressure sensor, temperature sensor, and displacement sensor, and the data transmission device is electrically connected to the ground control center; An internal channel is provided at one end of the inner cylinder. A power supply, circuit board, and controller are installed inside the internal channel. A sealing plug is provided at the opening of the internal channel. The pressure sensor and temperature sensor are both electrically connected to the controller. The inner cylinder is provided with a groove; the driving device includes a motor disposed in the groove, and the output end of the motor is connected to a hydraulic pump through a coupling; a motor valve cover plate is sealed at the opening of the groove, and a through hole communicating with the inner channel is provided on one side of the groove; a power line and a control line are provided on the motor, and the power line and control line pass through the through hole and are electrically connected to the power supply and the controller, respectively. An oil cavity is provided inside the other end of the inner cylinder, and a hydraulic pusher is provided in the oil cavity. The guide rod is located in the oil cavity, and the hydraulic pusher is connected to the guide rod located in the oil cavity. At least two oil passages are also provided in the inner cylinder. One end of each of the two oil passages is connected to the oil cavities on both sides of the hydraulic pusher, and the other end of each of the two oil passages is connected to the hydraulic pump.
2. The annular flow channel fluid control valve based on a wheel-shaped sliding sleeve according to claim 1, characterized in that, The inner cylinder has multiple mounting slots on its outer circumference. Each mounting slot contains an optical fiber, which is electrically connected to the controller and the ground control center. Each mounting slot opening is sealed with an optical fiber cover.
3. The annular flow channel fluid control valve based on a wheel-shaped sliding sleeve according to claim 1, characterized in that, The displacement sensor is disposed on the bottom surface of the inner channel.
4. The annular flow channel fluid control valve based on a wheel-shaped sliding sleeve according to claim 1, characterized in that, A hydraulic plug is provided at one end of the oil chamber, and one end of the guide rod passes through the hydraulic plug and is fixedly connected to the center of the wheel-shaped sliding sleeve.
5. The annular flow channel fluid control valve based on a wheel-shaped sliding sleeve according to claim 1, characterized in that, The diameter of the outer cylinder portion is 90mm to 110mm larger than the diameter of the inner cylinder portion, and the length of the outer cylinder portion is 0.5 to 0.75 times the length of the inner cylinder portion.
6. A method of using an annular flow channel fluid control valve, characterized in that, Using the annular flow channel fluid control valve as described in any one of claims 1 to 5, wherein the method of use includes the following steps: Step 1: Place the annular flow channel fluid control valve downhole, with the wheel-shaped sliding sleeve simultaneously shielding the fracturing orifice and the choke orifice; Step 2: Perform fracturing operation: The ground control center controls the drive device to drive the guide rod to slide axially inside the inner cylinder. The guide rod drives the wheel-shaped sliding sleeve to slide axially along the inner cylinder of the sleeve until the wheel-shaped sliding sleeve releases the fracturing hole, completely covering the throttling hole, and the fracturing fluid flows out from the fracturing hole, thus meeting the fracturing operation conditions. Step 3: Pressure and temperature sensors collect pressure and temperature data of the fluid and transmit the data to the ground control center via a data transmission device. The ground control center then predicts the production output based on the received pressure and temperature data of the fluid. Step 4: Perform throttling operation: Based on the fluid pressure, temperature and predicted production data, calculate the required opening size of the fluid control valve during balanced mining: The ground control center controls the drive device to drive the guide rod to move the wheel-shaped sliding sleeve along the axial direction of the inner cylinder of the sliding sleeve until the wheel-shaped sliding sleeve completely covers the fracturing hole, and adjusts the position of the wheel-shaped sliding sleeve according to the required opening size of the fluid control valve to achieve the required opening size of the throttling orifice, so that oil or gas flows into the valve from the throttling orifice; Step 5: After the throttling operation is completed, the ground control center controls the drive device to drive the guide rod to move the wheel-shaped sliding sleeve along the axial direction of the inner cylinder of the sleeve until the wheel-shaped sliding sleeve completely covers the fracturing hole and the throttling hole, and the fluid control valve is closed.
Citation Information
Patent Citations
Fluid control valve accurate opening degree calculation method based on numerical simulation
CN116401967A
Method, device and system for automatically adjusting opening degree of fluid control valve
CN116595764A
Horizontal well well completion throttle nipple joint with adjustable
CN204552714U
Fluid control device
CN105201463A
Intelligent switch valve for reservoir improvement, production monitor and control
CN106121585A