Intelligent well completion underground electromagnetic hydraulic reversing valve

Abstract

The invention provides an intelligent well completion underground electromagnetic hydraulic reversing valve which comprises a supporting pipe, an underground electromagnetic hydraulic reversing valve body, a first inner hexagon screw and a second inner hexagon screw, the supporting pipe is connected with the underground electromagnetic hydraulic reversing valve body in a fastened mode through the first inner hexagon screw and the second inner hexagon screw, and a valve body is arranged in the underground electromagnetic hydraulic reversing valve body. And a first single-core steel pipe cable sealing joint and a second single-core steel pipe cable sealing joint are separately arranged on the two sides of the valve body respectively. A single-core steel pipe cable is matched with a corresponding sealing connector, ground control signal transmission and underground signal feedback can be stably completed, firm connection between a supporting pipe and an underground electromagnetic hydraulic reversing valve is achieved through an inner hexagon screw, and efficient static sealing is formed at the positions such as a fixing plug, a transition connector and a hydraulic pipeline connector through a plurality of O-shaped sealing rings. The contact spring ensures continuous and reliable conduction of electrical property, and internal components are intensively and compactly arranged and can be smoothly placed in a narrow underground space.

Description

Technical Field

[0001] This invention relates to the technical field of equipment for hydraulic piston drive reversing control of hydraulic control valves for intelligent well completion downhole production fluid control valves, specifically to an intelligent well completion downhole electromagnetic hydraulic reversing valve. Background Technology

[0002] The hydraulic piston reversing movement of the downhole production fluid control valves in hydraulically controlled intelligent completion systems to open and close valve orifices at each stage is the core technology for achieving downhole production fluid control. Currently, domestic hydraulically controlled intelligent completion systems generally use an N+1 method to directly control the downhole production fluid control valves of N production zones within the wellbore. That is, N downhole production fluid control valves require N high-pressure opening inlet hydraulic lines and 1 low-pressure common closing return hydraulic line.

[0003] However, current intelligent well completion downhole electromagnetic hydraulic directional valves, with their N+1 control mode, are limited by downhole wellbore space and are only suitable for wellbores of 7 inches and above. They can only control a maximum of 3 downhole producing layers and are difficult to adapt to wellbores of 5.5 inches and smaller. The downhole digital hydraulic decoder control mode can only control a maximum of 6 producing layers. The supporting surface hydraulic operating system has a complex structure, and the pressure control sequence of the three hydraulic lines is prone to errors, which leads to deviations in the production control of the downhole production fluid control valve. The number of producing layers controlled by the two control modes is limited, and the overall operational reliability is insufficient, making it difficult to meet the needs of efficient oil and gas field development. Summary of the Invention

[0004] The present invention aims to solve the problems mentioned in the background art by providing an intelligent well completion downhole electromagnetic hydraulic directional valve.

[0005] The specific technical solution is as follows: A smart well completion downhole electromagnetic hydraulic directional valve includes: a mounting bracket, a downhole electromagnetic hydraulic directional valve, a first hexagon socket screw, and a second hexagon socket screw. The mounting bracket and the downhole electromagnetic hydraulic directional valve are fastened together by the first and second hexagon socket screws. The downhole electromagnetic hydraulic directional valve contains a valve body. A first single-core steel pipe cable sealing joint and a second single-core steel pipe cable sealing joint are respectively provided on both sides of the valve body. An input single-core steel pipe cable is installed in the first single-core steel pipe cable sealing joint, and an output single-core steel pipe cable is installed in the second single-core steel pipe cable sealing joint. A first common input low-pressure hydraulic pipeline sealing joint is installed at one end of the valve body via a flat thread. The valve body has a sealing joint and a first common input high-pressure hydraulic pipeline sealing joint, with two O-rings forming a static seal. The other end of the valve body is connected to a second common output low-pressure hydraulic pipeline sealing joint and a second common output high-pressure hydraulic pipeline sealing joint via a flat thread, and is also statically sealed by two O-rings. Inside the valve body, two transition fastening joints are fixed at both ends via flat threads. Both transition fastening joints are statically sealed by two O-rings. Both ends of the transition fastening joints are connected to a single-core power sealing plug via flat threads. The two single-core power sealing plugs are respectively connected to the first single-core steel pipe cable sealing joint and the second single-core steel pipe cable sealing joint.

[0006] As a preferred embodiment of the present invention, the valve body has valve chambers at both ends, and an electromagnetic two-position two-way directional valve is inserted into each of the two valve chambers. The valve body has a fixing plug connected to both ends by a flat thread. The two fixing plugs form a double static seal through four O-rings to improve the sealing strength. The valve body has two grooves, a central hole, and a connecting hole. The two grooves are arranged symmetrically on the left and right. The valve body has a circuit board compartment in the center. The circuit board compartment has a circuit board bracket. The radial holes at the ends of the two electromagnetic two-position two-way directional valves are respectively connected to the corresponding grooves and the central hole.

[0007] In a preferred embodiment of the present invention, the main control circuit board is fixed to the surface of the circuit board bracket by four screws. The two ends of the circuit board bracket are respectively provided with through holes and slots. Copper lugs are inserted into the through holes and contact springs are connected to the slots. The copper lugs and contact springs are connected to the main control circuit board through flexible cables. The two contact springs are respectively in contact with the corresponding transition fastening joints at one end.

[0008] As a preferred embodiment of the present invention, the valve body is provided with a first cable through hole, a second cable through hole and a third cable through hole, and the other end of the valve body is provided with a common low hydraulic through hole and a common high hydraulic through hole, as well as a first hydraulic connecting hole, a second hydraulic connecting hole, a third hydraulic connecting hole, a fourth hydraulic connecting hole and a fifth hydraulic connecting hole, and the valve body is provided with a high hydraulic through hole and a low hydraulic through hole.

[0009] In a preferred embodiment of the present invention, NPT sealing plugs are inserted into the first hydraulic connecting hole, the second hydraulic connecting hole, the third hydraulic connecting hole, the fourth hydraulic connecting hole, and the fifth hydraulic connecting hole. The electromagnetic coil wires of the two electromagnetic two-position two-way reversing valves pass through the first cable through hole, the second cable through hole, and the third cable through hole to enter the circuit board compartment and connect with the main control circuit board. The gap between the hole wall of the second cable through hole and the wire and the wire is formed by the NPT sealing plug to form a static seal.

[0010] In a preferred embodiment of the present invention, the first hydraulic connecting hole is connected to one of the grooves, the fifth hydraulic connecting hole is connected to the other groove, the common high hydraulic through hole is connected to the first hydraulic connecting hole, the low hydraulic through hole is connected to the fifth hydraulic connecting hole, the fourth hydraulic connecting hole is connected to the common low hydraulic through hole, the first common input low-pressure hydraulic pipeline sealing joint is connected to the common low hydraulic through hole, the first common input high-pressure hydraulic pipeline sealing joint is connected to the common high hydraulic through hole, the second common output high-pressure hydraulic pipeline sealing joint is connected to the common high hydraulic through hole, and the second common output low-pressure hydraulic pipeline sealing joint is connected to the common low hydraulic through hole.

[0011] As a preferred embodiment of the present invention, one end of the valve body is connected to a low-pressure hydraulic pipeline sealing joint of the flow control valve and a high-pressure hydraulic pipeline sealing joint of the flow control valve via a flat thread, and both are statically sealed by two O-rings.

[0012] In a preferred embodiment of the present invention, the low-pressure hydraulic pipeline sealing joint of the flow control valve is connected to the low-pressure through hole, the high-pressure hydraulic pipeline sealing joint of the flow control valve is connected to the high-pressure through hole, the high-pressure through hole is connected to the second hydraulic connecting hole and the third hydraulic connecting hole, the second hydraulic connecting hole is connected to one of the connecting holes, the third hydraulic connecting hole is connected to another connecting hole, and the low-pressure through hole is connected to the fifth hydraulic connecting hole.

[0013] As a preferred embodiment of the present invention, both the outer peripheral walls of the first single-core steel pipe cable sealing joint and the second single-core steel pipe cable sealing joint are provided with anti-slip ridges, wherein the anti-slip ridges are axially distributed strip-shaped protrusions with a protrusion height of 1-1.5mm.

[0014] As a preferred embodiment of the present invention, the outer peripheral wall of the valve body is uniformly provided with a plurality of anti-slip patterns, wherein the anti-slip patterns are annular groove structures with a groove depth of 0.5-1mm.

[0015] The present invention has the following beneficial effects: 1. This invention provides an intelligent well completion downhole electromagnetic hydraulic directional valve. A single-core steel pipe cable with a corresponding sealing joint can stably complete the transmission of surface control signals and downhole signal feedback. The internal hexagon screw securely connects the support to the downhole electromagnetic hydraulic directional valve. Multiple O-rings form a highly efficient static seal at the fixed plug, transition joint, hydraulic pipeline joint, and other parts. The contact spring ensures continuous and reliable electrical conduction. The internal components are arranged in a compact manner, which can be smoothly placed into the narrow space downhole. The overall connection, sealing, and conductivity are stable, and it is suitable for the complex and harsh working conditions downhole.

[0016] 2. This invention provides an intelligent well completion downhole electromagnetic hydraulic directional valve. The NPT sealing plug ensures reliable static sealing at all hydraulic connection holes, cable through holes, and wire gaps, eliminating fluid leakage at the source. The hydraulic through holes precisely connect with various joints and valve internal flow channels to form a regular closed-loop hydraulic circuit. The electromagnetic two-position two-way directional valve is driven by the main control circuit board to complete the high and low pressure on / off switching. The flat thread connection greatly simplifies the disassembly and assembly steps. The flow channel layout is compact and reasonable, which can stably complete the precise regulation operation of the flow control valve. It is highly compatible with various hydraulic control type intelligent well completion systems, and is convenient to install and maintain, with outstanding sealing performance and stability. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention; Figure 2 A left-side structural schematic diagram of a downhole electromagnetic hydraulic directional valve for providing an embodiment of the present invention. Figure 3 A schematic diagram of the main view structure of the intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention; Figure 4 A top view structural schematic diagram of an intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention; Figure 5 A schematic diagram of the AA cross-sectional structure of the intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention; Figure 6 A BB cross-sectional view of the intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention; Figure 7 A CC cross-sectional view of an intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention. Figure 8 A DD cross-sectional view of an intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention. Figure 9 This invention provides an EE cross-sectional view of an intelligent well completion downhole electromagnetic hydraulic directional valve for embodiments of the present invention. Figure 10This is a schematic diagram of the FF cross-sectional structure of an intelligent well completion downhole electromagnetic hydraulic directional valve provided for embodiments of the present invention.

[0018] Figure 11 A GG cross-sectional view of the intelligent well completion downhole electromagnetic hydraulic directional valve is provided for embodiments of the present invention. Figure 12 This invention provides a schematic diagram of the principle structure of an intelligent well completion downhole electromagnetic hydraulic directional valve for embodiments of the present invention.

[0019] In the attached image: 1. Custody; 2. Downhole electromagnetic hydraulic directional valve; 201. First single-core steel pipe cable sealing joint; 202. Valve body; 203. NPT sealing plug; 204. First internal hexagon screw; 205. Second single-core steel pipe cable sealing joint; 206. First common input low-pressure hydraulic line sealing joint; 207. First common input high-pressure hydraulic line sealing joint; 208. Second internal hexagon screw; 209. Second common output low-pressure hydraulic line sealing joint; 210. Second common output high-pressure hydraulic line sealing joint; 211. Flow control valve low-pressure hydraulic line sealing joint; 212. Flow control valve high-pressure hydraulic line sealing joint; 3. Fixed plug; 301. Electromagnetic two-position two-way directional valve; 302. Groove; 303. Center hole; 304. Connecting hole; 4. Transition fastening connector; 401. Single-core power sealing plug; 402. Contact spring; 403. Copper lug; 404. Main control circuit board; 405. Circuit board bracket; 406. Circuit board compartment; 5. First cable through hole; 501. Second cable through hole; 502. Third cable through hole; 6. Common low hydraulic through hole; 7. Common high hydraulic through hole; 8. First hydraulic connecting hole; 801. Second hydraulic connecting hole; 802. Third hydraulic connecting hole; 803. Fourth hydraulic connecting hole; 804. Fifth hydraulic connecting hole; 9. High hydraulic through hole; 10. Low hydraulic through hole. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Example 1 This embodiment provides an intelligent well completion downhole electromagnetic hydraulic directional valve, such as... Figures 1-12 As shown, the system includes: a mounting bracket 1, a downhole electromagnetic hydraulic directional valve 2, a first hexagon socket screw 204, and a second hexagon socket screw 208. The mounting bracket 1 and the downhole electromagnetic hydraulic directional valve 2 are fastened together by the first hexagon socket screw 204 and the second hexagon socket screw 208. The downhole electromagnetic hydraulic directional valve 2 has a valve body 202 inside. A first single-core steel pipe cable sealing joint 201 and a second single-core steel pipe cable sealing joint 205 are respectively installed on both sides of the valve body 202. The first single-core steel pipe cable sealing joint 201 contains an input single-core steel pipe cable, and the second single-core steel pipe cable sealing joint 205 contains an output single-core steel pipe cable. A first common input low-pressure hydraulic pipeline sealing joint 205 is installed at one end of the valve body 202 via a flat thread. 6 and the first common input high-pressure hydraulic pipeline sealing joint 207, two O-rings form a static seal. The other end of the valve body 202 is connected to the second common output low-pressure hydraulic pipeline sealing joint 209 and the second common output high-pressure hydraulic pipeline sealing joint 210 through a flat thread, and forms a static seal through two O-rings. Inside the valve body 202, two transition fastening joints 4 are fixed at both ends through flat threads. Both transition fastening joints 4 form a static seal through two O-rings. Both ends of the transition fastening joints 4 are connected to single-core power sealing plugs 401 through flat threads. The two single-core power sealing plugs 401 are respectively connected to the first single-core steel pipe cable sealing joint 201 and the second single-core steel pipe cable sealing joint 205.

[0025] The valve body 202 has valve chambers at both ends, and a solenoid two-position two-way directional valve 301 is inserted into each of the two valve chambers. Both ends of the valve body 202 are connected to a fixing plug 3 by a flat thread. The two fixing plugs 3 form a double static seal through four O-rings to improve the sealing strength. The valve body 202 has two grooves 302, a central hole 303, and a connecting hole 304. The two grooves 302 are arranged symmetrically on the left and right. The circuit board compartment 406 is located in the center of the valve body 202. The circuit board compartment 406 has a circuit board bracket 405. The radial holes at the ends of the two solenoid two-position two-way directional valves 301 are connected to the corresponding grooves 302 and central holes 303, respectively.

[0026] The main control circuit board 404 is fixed to the surface of the circuit board bracket 405 by four screws. The circuit board bracket 405 has through holes and slots at both ends. Copper lugs 403 are inserted into the through holes and contact springs 402 are connected to the slots. The copper lugs 403 and contact springs 402 are connected to the main control circuit board 404 by flexible cables. The two contact springs 402 are in contact with the corresponding transition fastening connectors 4 at one end.

[0027] The valve body 202 has a first cable through hole 5, a second cable through hole 501 and a third cable through hole 502 inside. The other end of the valve body 202 has a common low hydraulic through hole 6 and a common high hydraulic through hole 7, as well as a first hydraulic connecting hole 8, a second hydraulic connecting hole 801, a third hydraulic connecting hole 802, a fourth hydraulic connecting hole 803 and a fifth hydraulic connecting hole 804. The valve body 202 also has a high hydraulic through hole 9 and a low hydraulic through hole 10.

[0028] Through the design of the downhole electromagnetic hydraulic directional valve 2, the first single-core steel pipe cable sealing joint 201, the second single-core steel pipe cable sealing joint 205, the first common input low-pressure hydraulic pipeline sealing joint 206, the second common output low-pressure hydraulic pipeline sealing joint 209, the valve body 202, the groove 302, the circuit board bracket 405, the contact spring 402, and the high-pressure through hole 9, the input single-core steel pipe cable is connected through the first single-core steel pipe cable sealing joint 201, transmitting the ground control signal to the main control circuit board 404 in the circuit board compartment 406. The output single-core steel pipe cable achieves signal feedback through the second single-core steel pipe cable sealing joint 205. The support bracket 1 and the downhole electromagnetic hydraulic directional valve 2 are fastened together by the first internal hexagon screw 204 and the second internal hexagon screw 208. The valve body 2 The fixed plugs 3 at both ends of valve 202 form a double static seal through four O-rings. The two transition fastening joints 4 also form a static seal through two O-rings. The contact springs 402 contact the corresponding transition fastening joints 4 at one end to ensure electrical conduction. The first common input low-pressure hydraulic pipeline sealing joint 206 and the first common input high-pressure hydraulic pipeline sealing joint 207 at one end of valve body 202, and the second common output low-pressure hydraulic pipeline sealing joint 209 and the second common output high-pressure hydraulic pipeline sealing joint 210 at the other end, all form a static seal through two O-rings. The radial holes at the ends of the two electromagnetic two-position two-way directional valves 301 are connected to the corresponding grooves 302 and the center hole 303, respectively. The internal structure of valve body 202 is compact and suitable for installation in narrow downhole spaces.

[0029] Example 2 This embodiment provides an intelligent well completion downhole electromagnetic hydraulic directional valve, such as... Figures 1-12 As shown, the system includes: NPT sealing plugs 203 inserted into the first hydraulic connection hole 8, the second hydraulic connection hole 801, the third hydraulic connection hole 802, the fourth hydraulic connection hole 803, and the fifth hydraulic connection hole 804. The electromagnetic coil wires of the two electromagnetic two-position two-way reversing valves 301 pass through the first cable through hole 5, the second cable through hole 501, and the third cable through hole 502 to enter the circuit board compartment 406 and connect to the main control circuit board 404. The gap between the hole wall of the second cable through hole 501 and the third cable through hole 502 and the wire is formed by the NPT sealing plugs 203 to form a static seal.

[0030] The first hydraulic connecting hole 8 is connected to one of the grooves 302, the fifth hydraulic connecting hole 804 is connected to the other groove 302, the common high hydraulic through hole 7 is connected to the first hydraulic connecting hole 8, the low hydraulic through hole 10 is connected to the fifth hydraulic connecting hole 804, the fourth hydraulic connecting hole 803 is connected to the common low hydraulic through hole 6, the first common input low pressure hydraulic pipeline sealing joint 206 is connected to the common low hydraulic through hole 6, the first common input high pressure hydraulic pipeline sealing joint 207 is connected to the common high hydraulic through hole 7, the second common output high pressure hydraulic pipeline sealing joint 210 is connected to the common high hydraulic through hole 7, and the second common output low pressure hydraulic pipeline sealing joint 209 is connected to the common low hydraulic through hole 6.

[0031] One end of the valve body 202 is connected to the low-pressure hydraulic pipeline sealing joint 211 and the high-pressure hydraulic pipeline sealing joint 212 of the flow control valve via a flat thread, and both are statically sealed by two O-rings.

[0032] The low-pressure hydraulic line sealing joint 211 of the flow control valve is connected to the low-pressure through hole 10, the high-pressure hydraulic line sealing joint 212 of the flow control valve is connected to the high-pressure through hole 9, the high-pressure through hole 9 is connected to the second hydraulic connecting hole 801 and the third hydraulic connecting hole 802, the second hydraulic connecting hole 801 is connected to the connecting hole 304, the third hydraulic connecting hole 802 is connected to another connecting hole 304, and the low-pressure through hole 10 is connected to the fifth hydraulic connecting hole 804.

[0033] Through the design of NPT sealing plug 203, first hydraulic connecting hole 8, second cable through hole 501, common low hydraulic through hole 6, flow control valve low-pressure hydraulic pipeline sealing joint 211, flow control valve high-pressure hydraulic pipeline sealing joint 212, and low hydraulic through hole 10, NPT sealing plug 203 is inserted into the first hydraulic connecting hole 8, second hydraulic connecting hole 801, third hydraulic connecting hole 802, fourth hydraulic connecting hole 803, and fifth hydraulic connecting hole 804. The electromagnetic coil wires of the two electromagnetic two-position two-way reversing valves 301 pass through the first cable through hole 5, the second cable through hole 501, and the fifth hydraulic through hole 6. The three cable through-holes 502 enter the circuit board compartment 406 and connect to the main control circuit board 404. The gaps between the walls of the second cable through-hole 501 and the third cable through-hole 502 and the wires are sealed by NPT sealing plugs 203 to prevent fluid leakage. The first hydraulic connecting hole 8 connects to one of the grooves 302, and the fifth hydraulic connecting hole 804 connects to another groove 302. The common high hydraulic through-hole 7 connects to the first hydraulic connecting hole 8, the low hydraulic through-hole 10 connects to the fifth hydraulic connecting hole 804, and the fourth hydraulic connecting hole 803 connects to the common low hydraulic through-hole 6. The first common input... The low-pressure hydraulic line sealing joint 206 is connected to the common low-pressure through-hole 6; the first common input high-pressure hydraulic line sealing joint 207 is connected to the common high-pressure through-hole 7; the second common output high-pressure hydraulic line sealing joint 210 is connected to the common high-pressure through-hole 7; the second common output low-pressure hydraulic line sealing joint 209 is connected to the common low-pressure through-hole 6; the flow control valve low-pressure hydraulic line sealing joint 211 at one end of the valve body 202 is connected to the low-pressure through-hole 10; the flow control valve high-pressure hydraulic line sealing joint 212 is connected to the high-pressure through-hole 9; and the high-pressure through-hole 9 is connected to the second hydraulic line sealing joint 6. The pressure connecting hole 801 and the third hydraulic connecting hole 802 are connected. The second hydraulic connecting hole 801 is connected to the connecting hole 304. The third hydraulic connecting hole 802 is connected to another connecting hole 304. The low hydraulic through hole 10 is connected to the fifth hydraulic connecting hole 804. The main control circuit board 404 drives the two electromagnetic two-position two-way reversing valves 301 to operate. The end radial hole switches on and off with the corresponding groove 302 and center hole 303 to realize the hydraulic reversal between high pressure and low pressure, and complete the regulation of the flow control valve. All components are connected with flat threads, which is convenient for installation and maintenance and is compatible with various hydraulic control intelligent well completion systems.

[0034] Specifically, in this embodiment, both the outer peripheral walls of the first single-core steel pipe cable sealing joint 201 and the second single-core steel pipe cable sealing joint 205 are provided with anti-slip ridges. The anti-slip ridges are axially distributed strip-shaped protrusions with a protrusion height of 1-1.5mm. The anti-slip ridges can increase the contact friction between the sealing joint and the insertion / removal tool or the operator's hand, making it easier to insert or remove the single-core steel pipe cable and preventing slippage.

[0035] Specifically, in this embodiment, the outer peripheral wall of the valve body 202 is uniformly provided with several anti-slip patterns. The anti-slip patterns are annular groove structures with a groove depth of 0.5-1mm. The anti-slip patterns can increase the friction on the outer periphery of the valve body 202, making it more stable for operators to hold the valve when installing, repairing, or disassembling the directional valve downhole, avoiding slippage caused by the smooth surface of the valve body 202, and improving the ease of operation.

[0036] In summary, this embodiment provides an intelligent well completion downhole electromagnetic hydraulic directional valve, which has the following advantages: the compact structure of the valve body 202 and the support tube 1 is adapted to wellbores of 5.5 inches and above, solving the space limitation problem; two electromagnetic two-position two-way directional valves 301, together with the main control circuit board 404, realize high-pressure and low-pressure rapid hydraulic directional switching; the first single-core steel pipe cable sealing joint 201 and the second single-core steel pipe cable sealing joint 205, together with the first common input low-pressure hydraulic pipeline sealing joint 206, the first common input high-pressure hydraulic pipeline sealing joint 207, and the second common output... The low-pressure hydraulic pipeline sealing joint 209, the second common output high-pressure hydraulic pipeline sealing joint 210, and two hydraulic pipelines enable control of twelve or more production layers, breaking through the quantity limit. The groove 302, center hole 303, and connecting hole 304 optimize the hydraulic channel layout and improve control accuracy. The NPT sealing plug 203, together with the fixed plug 3 and multiple O-rings, enhances the sealing performance. The overall structure uses a large number of standard parts to reduce the processing difficulty and improve the reliability of operation. It solves the problem of pressure control errors and production control deviations in traditional control methods and meets the needs of efficient oil and gas field exploitation.

[0037] During use, anti-vibration hydraulic oil is injected through the second cable through-hole 501, filling the circuit board compartment 406, the first cable through-hole 5, and the third cable through-hole 502. The gaps between the walls of the second cable through-hole 501 and the electromagnetic coil wires are sealed by NPT sealing plugs 203. When not receiving ground control signals, the device is in normal state A. One of the two electromagnetic two-position two-way reversing valves 301 is normally closed and the other is normally open. High-pressure hydraulic oil flows into the common high-pressure hydraulic through-hole 7 through the first common input high-pressure hydraulic pipeline sealing joint 207, and then enters through the first hydraulic connecting hole 8. The flow of low-pressure hydraulic oil into the corresponding groove 302 is blocked by the normally closed solenoid 2-position 2-way directional valve 301. The low-pressure hydraulic oil flows into the common low-pressure hydraulic passage 6 through the first common input low-pressure hydraulic pipeline sealing joint 206, and then enters another groove 302 through the fourth hydraulic connecting hole 803 and the fifth hydraulic connecting hole 804. The normally open solenoid 2-position 2-way directional valve 301 enters the high-pressure hydraulic passage 9 through the center hole 303, connecting hole 304, second hydraulic connecting hole 801, and third hydraulic connecting hole 802 in sequence. Finally, low-pressure hydraulic oil is introduced into both the high-pressure chamber and the low-pressure chamber of the flow control valve. When the pressure on both sides of the piston is balanced and remains stationary, the reversing control signal from the ground-level host computer is transmitted to the main control circuit board 404 in the circuit board compartment 406 via the input single-core steel pipe cable and the first single-core steel pipe cable sealing joint 201, triggering hydraulic reversing state B. The main control circuit board 404 drives the two electromagnetic two-position two-way reversing valves 301 to switch on / off states. The normally closed electromagnetic two-position two-way reversing valve 301 opens, and the normally open electromagnetic two-position two-way reversing valve 301 closes. High-pressure hydraulic oil enters the high-pressure through hole 9 through the groove 302, the center hole 303, and the connecting hole 304. Then, the high-pressure hydraulic oil enters the high-pressure chamber of the flow control valve through the high-pressure hydraulic pipeline sealing joint 212, pushing the piston to move towards the low-pressure chamber. The low-pressure hydraulic oil in the low-pressure chamber flows back to the common low-pressure hydraulic through-hole 6 through the low-pressure hydraulic pipeline sealing joint 211, the low-pressure through-hole 10, the fifth hydraulic connecting hole 804, another groove 302, and the fourth hydraulic connecting hole 803. When the host computer on the ground sends a shutdown control signal, the main control circuit board 404 drives the two electromagnetic two-position two-way reversing valves 301 to reset to the initial state of one normally closed and one normally open, and the device returns to normal state A.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart well completion downhole electromagnetic hydraulic directional valve, characterized in that, include: The system includes a manhole cover (1), a downhole electromagnetic hydraulic directional valve (2), a first hexagon socket screw (204), and a second hexagon socket screw (208). The manhole cover (1) and the downhole electromagnetic hydraulic directional valve (2) are fastened together by the first hexagon socket screw (204) and the second hexagon socket screw (208). The downhole electromagnetic hydraulic directional valve (2) has a valve body (202). The valve body (202) has a first single-core steel pipe cable sealing joint (201) and a second single-core steel pipe cable sealing joint (205) on both sides. The first single-core steel pipe cable sealing joint (201) contains an input single-core steel pipe cable, and the second single-core steel pipe cable sealing joint (205) contains an output single-core steel pipe cable. One end of the valve body (202) is fitted with a first common input low-pressure hydraulic pipeline sealing joint (205) through a flat thread. 206) and the first common input high pressure hydraulic pipeline sealing joint (207), two O-ring seals form a static seal. The other end of the valve body (202) is connected to the second common output low pressure hydraulic pipeline sealing joint (209) and the second common output high pressure hydraulic pipeline sealing joint (210) through a flat thread, and forms a static seal through two O-ring seals. The valve body (202) has two transition fastening joints (4) fixed at both ends through flat threads. Both transition fastening joints (4) form a static seal through two O-ring seals. Both ends of the transition fastening joints (4) are connected to single core electric sealing plugs (401) through flat threads. The two single core electric sealing plugs (401) are respectively connected to the first single core steel pipe cable sealing joint (201) and the second single core steel pipe cable sealing joint (205).

2. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 1, characterized in that, The valve body (202) has valve chambers at both ends, and electromagnetic two-position two-way directional valves (301) are inserted into both valve chambers. The valve body (202) has fixed plugs (3) connected to both ends by flat threads. The two fixed plugs (3) form a double static seal through four O-rings to improve the sealing strength. The valve body (202) has two grooves (302), a center hole (303), and a connecting hole (304). The two grooves (302) are arranged symmetrically on the left and right. The valve body (202) has a circuit board compartment (406) in the center. The circuit board compartment (406) has a circuit board bracket (405). The radial holes at the ends of the two electromagnetic two-position two-way directional valves (301) are connected to the corresponding grooves (302) and the center hole (303) respectively.

3. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 2, characterized in that, The main control circuit board (404) is fixed to the surface of the circuit board bracket (405) by four screws. The circuit board bracket (405) has through holes and slots at both ends. Copper lugs (403) are inserted into the through holes and contact springs (402) are connected to the slots. The copper lugs (403) and contact springs (402) are connected to the main control circuit board (404) by flexible cables. The two contact springs (402) are in contact with the corresponding transition fastening joints (4) at one end.

4. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 1, characterized in that, The valve body (202) has a first cable through hole (5), a second cable through hole (501) and a third cable through hole (502) inside. The other end of the valve body (202) has a common low hydraulic through hole (6) and a common high hydraulic through hole (7), as well as a first hydraulic connecting hole (8), a second hydraulic connecting hole (801), a third hydraulic connecting hole (802), a fourth hydraulic connecting hole (803) and a fifth hydraulic connecting hole (804). The valve body (202) also has a high hydraulic through hole (9) and a low hydraulic through hole (10).

5. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 3, characterized in that, NPT sealing plugs (203) are inserted into the first hydraulic connection hole (8), the second hydraulic connection hole (801), the third hydraulic connection hole (802), the fourth hydraulic connection hole (803), and the fifth hydraulic connection hole (804). The electromagnetic coil wires of the two electromagnetic two-position two-way reversing valves (301) pass through the first cable through hole (5), the second cable through hole (501), and the third cable through hole (502) and enter the circuit board compartment (406) to connect with the main control circuit board (404). The gap between the hole wall of the second cable through hole (501) and the third cable through hole (502) and the wire is formed by the NPT sealing plugs (203) to form a static seal.

6. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 5, characterized in that, The first hydraulic connecting hole (8) is connected to one of the grooves (302), the fifth hydraulic connecting hole (804) is connected to the other groove (302), the common high hydraulic through hole (7) is connected to the first hydraulic connecting hole (8), the low hydraulic through hole (10) is connected to the fifth hydraulic connecting hole (804), the fourth hydraulic connecting hole (803) is connected to the common low hydraulic through hole (6), the first common input low pressure hydraulic pipeline sealing joint (206) is connected to the common low hydraulic through hole (6), the first common input high pressure hydraulic pipeline sealing joint (207) is connected to the common high hydraulic through hole (7), the second common output high pressure hydraulic pipeline sealing joint (210) is connected to the common high hydraulic through hole (7), and the second common output low pressure hydraulic pipeline sealing joint (209) is connected to the common low hydraulic through hole (6).

7. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 2, characterized in that, One end of the valve body (202) is connected to a low-pressure hydraulic pipeline sealing joint (211) of the flow control valve and a high-pressure hydraulic pipeline sealing joint (212) of the flow control valve via a flat thread, and both are statically sealed by two O-rings.

8. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 7, characterized in that, The low-pressure hydraulic line sealing joint (211) of the flow control valve is connected to the low-pressure through hole (10), the high-pressure hydraulic line sealing joint (212) of the flow control valve is connected to the high-pressure through hole (9), the high-pressure through hole (9) is connected to the second hydraulic connecting hole (801) and the third hydraulic connecting hole (802), the second hydraulic connecting hole (801) is connected to the connecting hole (304), the third hydraulic connecting hole (802) is connected to another connecting hole (304), and the low-pressure through hole (10) is connected to the fifth hydraulic connecting hole (804).

9. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 1, characterized in that, The outer peripheral walls of the first single-core steel pipe cable sealing joint (201) and the second single-core steel pipe cable sealing joint (205) are provided with anti-slip ridges. The anti-slip ridges are axially distributed strip-shaped protrusions with a protrusion height of 1-1.5mm.

10. The intelligent well completion downhole electromagnetic hydraulic directional valve according to claim 8, characterized in that, The outer peripheral wall of the valve body (202) is uniformly provided with several anti-slip patterns, which are annular groove structures with a groove depth of 0.5-1mm.

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