Cable-controlled dual-mode injection device

Abstract

The utility model relates to a cable control double -mode distribution injector belongs to distribution injector technical field, including water tap subassembly and motor drive arrangement, water tap subassembly includes valve core, valve bushing, drive shaft and fishing assembly, drive shaft rotation drives valve core to move along the axial movement to adjust the flow area, fishing assembly is located in the upper end of water tap subassembly, is used for with the docking of measuring and adjusting instrument or fishing tool, motor drive arrangement is coaxial with water tap subassembly and is arranged, including motor, transmission mechanism by motor drive, electromagnet and docking sleeve, docking sleeve is transmission connection with drive shaft, wherein, electromagnet is configured to pass through the electrification or the power failure, makes docking sleeve and transmission mechanism engage or separate, to switch between the double -drive mode of cable control double -mode distribution injector, including: motor drive mode and measuring and adjusting instrument drive mode, under the motor drive mode, through motor drive regulation flow, under the measuring and adjusting instrument drive mode, through measuring and adjusting instrument fishing assembly drive regulation flow.

Description

Technical Field

[0001] This utility model belongs to the field of dispensing device technology, specifically relating to a cable-controlled dual-mode dispensing device. Background Technology

[0002] Cable-controlled intelligent stratified water injection technology is a key technology for oilfield development. It precisely controls the water injection volume at each layer through a downhole distributor to improve oil recovery. Existing cable-controlled intelligent distributors generally use motor-driven nozzle adjustment. This type of device fixes the nozzle assembly inside the distributor, receives commands via cable, and the motor drives the valve core to change the flow area, thereby achieving flow regulation.

[0003] However, the complex fluid environment downhole can easily cause the nozzles to become stuck due to impurities. When this happens, the motor may fail to operate due to limited output torque, resulting in the failure of the flow regulation function. Once this happens, especially when the nozzle is closed, water injection operations at that formation will be completely interrupted. Since the nozzle assembly cannot be replaced quickly, costly and time-consuming well workover operations are required after failure, severely impacting the oilfield's production efficiency and economic benefits. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a cable-controlled dual-mode dispenser. The technical problem to be solved by this utility model is achieved through the following technical solution: This utility model provides a cable-controlled dual-mode dispenser, including an upper connector, an instrument sleeve, a connector body, a lower connector, a central tube, and a control acquisition mainboard. The upper connector, the instrument sleeve, and the connector body are arranged sequentially from top to bottom, and two sections of the instrument sleeve are sealed together by the connector body. The central tube is located inside the instrument sleeve, and the control acquisition mainboard is disposed in the annular space between the central tube and the instrument sleeve. It also includes a water nozzle assembly and a motor drive device. The water nozzle assembly includes a valve core, a valve sleeve, a drive shaft, and a retrieval assembly. The drive shaft rotates to move the valve core axially to adjust the flow area. The retrieval assembly is located at the upper end of the water nozzle assembly and is used to dock with a measuring and adjusting instrument or a retrieval tool. The motor drive device is connected to the... The water nozzle assembly is coaxially arranged and includes a motor, a transmission mechanism driven by the motor, an electromagnet, and a docking sleeve. The docking sleeve is connected to the drive shaft. The electromagnet is configured to engage or disengage the docking sleeve from the transmission mechanism by energizing or de-energizing it, thereby switching between the dual drive modes of the cable-controlled dual-mode dispenser. The dual drive modes include a motor drive mode and a measuring instrument drive mode. In the motor drive mode, the electromagnet is energized, the docking sleeve engages with the drive shaft, and the power of the motor is transmitted sequentially through the transmission mechanism and the docking sleeve to the drive shaft. In the measuring instrument drive mode, the electromagnet is de-energized, the docking sleeve disengages from the drive shaft, and the measuring instrument drives the drive shaft through the retrieval assembly.

[0005] In one embodiment of this utility model, the transmission mechanism includes a lead screw and a drive rod. The output shaft of the motor, the lead screw, and the drive rod are coaxially connected in sequence. The drive rod is provided with a drive rod flat part. The mating sleeve is provided with a large inner hole flat part and a small inner hole flat part. The large inner hole flat part can engage or disengage with the drive rod flat part. The small inner hole flat part engages with the tip flat part of the drive shaft.

[0006] In one embodiment of this utility model, the transmission mechanism further includes: a retainer, a connecting spring, and a magnet. The electromagnet is disposed on the retainer, the connecting spring is sleeved on the drive rod, and the two ends of the connecting spring are respectively connected to the electromagnet and the mating sleeve. The magnet is fixedly connected to the mating sleeve. When the electromagnet is energized, it attracts the magnet and compresses the connecting spring, causing the large inner hole flat part to engage with the driving rod flat part. When the electromagnet is de-energized, the connecting spring pushes the mating sleeve to disengage from the drive rod.

[0007] In one embodiment of the present invention, the salvage assembly includes a salvage shaft and an adjusting block. The salvage shaft is connected to the adjusting block, and the salvage shaft has an inner flat portion for engaging with the flat end portion of the drive shaft.

[0008] In one embodiment of this utility model, the water tap assembly further includes a drive nut and an actuator. The drive nut is threadedly connected to the drive shaft, and a drive nut flat portion is provided on the outside of the drive nut. The actuator is horizontally arranged, and its output end can extend to clamp the drive nut flat portion to prevent rotation, or retract to loosen the drive nut.

[0009] In one embodiment of the present invention, the water nozzle assembly further includes a locking mechanism, which includes a cam and a retrieval spring; the cam is disposed below the retrieval shaft, and the retrieval spring is sleeved outside the retrieval shaft; the cam, through cooperation with the inner hole guide surface and guide inclined surface on the connector body, realizes the locking of the water nozzle assembly after deployment and the release during retrieval.

[0010] In one embodiment of the present invention, the retrieval assembly further includes a deployment cap, which is disposed on the top of the water nozzle assembly and is used to dock with the retrieval tool.

[0011] In one embodiment of this utility model, the connector body integrates an internal pressure sensor, an external pressure sensor, and a flow meter; wherein, the internal pressure sensor is used to collect water injection pressure, the external pressure sensor is used to collect formation pressure, and the flow meter is used to measure flow rate; the internal pressure sensor, the external pressure sensor, and the flow meter are all electrically connected to the control acquisition motherboard.

[0012] In one embodiment of this utility model, an annular space is formed between the instrument protective tube and the central tube, and at least a portion of the control acquisition motherboard and the motor drive device are disposed within the annular space.

[0013] In one embodiment of this utility model, both the upper connector and the lower connector are provided with cable introduction devices for connecting cables and supplying power to downhole instruments and enabling communication.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model's cable-controlled dual-mode injector employs a retrievable nozzle assembly combined with motor drive and electromagnetic switching, enabling the injector to operate in both motor-driven and instrument-driven modes. When the motor drive fails to overcome jamming due to insufficient torque, it can switch to instrument-driven mode, utilizing its greater mechanical torque to forcibly adjust the nozzle and restore water injection function. This provides dual protection for downhole flow control, reducing unplanned well workover operations caused by minor or moderate jamming, saving operating costs and time, and ensuring the continuity and stability of water injection production. Furthermore, in the event of a serious nozzle assembly failure, a retrievable nozzle assembly can be used for retrieval, allowing for replacement and extending the injector's lifespan.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a cable-controlled dual-mode dispenser provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the internal structure of the cable-controlled dual-mode dispenser provided in this embodiment of the utility model; Figure 3 This is provided by the embodiment of the present utility model. Figure 1 Structural sectional view along the AA direction; Figure 4 This is provided by the embodiment of the present utility model. Figure 3 Enlarged view of the structure at point I; Figure 5 This is provided by the embodiment of the present utility model. Figure 4 Structural sectional view along the BB direction; Figure 6 This is a structural schematic diagram of the faucet assembly provided in an embodiment of the present invention; Figure 7 This is provided by the embodiment of the present utility model. Figure 6 A structural sectional view along the CC direction; Figure 8 This is provided by the embodiment of the present utility model. Figure 7 Structural cross-sectional view along the DD direction; Figure 9 This is a partial view of the water tap assembly docking according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the drive shaft provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the drive nut provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the docking sleeve provided in an embodiment of the present utility model; Figure 13 This is a schematic diagram of the structure of the motor drive device provided in an embodiment of the present invention.

[0017] Reference numerals: 1-Upper connector; 2-Instrument protective tube; 3-Connector body; 31-Inner hole guide surface; 32-Guide inclined surface; 4-Lower connector; 5-Center tube; 6-Control acquisition main board; 7-Water nozzle assembly; 71-Valve core; 72-Valve sleeve; 73-Drive shaft; 731-Tip flat part; 732-Flat end flat part; 74-Retrieval shaft; 741-Inner hole flat part; 75-Adjusting block; 76-Drive nut; 761-Drive nut flat part; 77-Actuator; 78-Cam; 79-Retrieval spring; 710-Deployment cap; 8-Motor drive device; 81-Motor; 82-Lead screw; 83-Drive rod; 831-Drive rod flat part; 84-Electromagnet; 85-Matching sleeve; 851-Large inner hole flat part; 852-Small inner hole flat part; 86-Retainer; 87-Connecting spring; 88-Magnet; 9-Cable entry device. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description of a cable-controlled dual-mode dispensing device based on this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0019] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the specific embodiments with reference to the accompanying drawings. Through the description of the specific embodiments, a more in-depth and specific understanding can be gained of the technical means and effects adopted by this utility model to achieve the intended purpose. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the technical solution of this utility model.

[0020] Example 1 like Figures 1 to 13 As shown, Figure 1 This is a schematic diagram of the structure of a cable-controlled dual-mode dispenser provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the internal structure of the cable-controlled dual-mode dispenser provided in this embodiment of the utility model; Figure 3 This is provided by the embodiment of the present utility model. Figure 1 Structural sectional view along the AA direction; Figure 4 This is provided by the embodiment of the present utility model. Figure 3 Enlarged view of the structure at point I; Figure 5 This is provided by the embodiment of the present utility model. Figure 4 Structural sectional view along the BB direction; Figure 6 This is a structural schematic diagram of the faucet assembly provided in this embodiment of the utility model; Figure 7 This is provided by the embodiment of the present utility model. Figure 6 A structural sectional view along the CC direction; Figure 8 This is provided by the embodiment of the present utility model. Figure 7 Structural cross-sectional view along the DD direction; Figure 9 This is a partial view of the water tap assembly docking according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the drive shaft provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the drive nut provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the docking sleeve provided in an embodiment of the present utility model; Figure 13 This is a schematic diagram of the structure of the motor drive device provided in an embodiment of the present invention.

[0021] In this embodiment, the cable-controlled dual-mode injector includes an upper connector 1, an instrument sheath 2, a connector body 3, a lower connector 4, a central tube 5, and a control acquisition mainboard 6. The upper connector 1, instrument sheath 2, and connector body 3 are arranged sequentially from top to bottom, and the two sections of instrument sheath 2 are sealed together by the connector body 3. The upper connector 1 and the lower connector 4 are also sealed together with the instrument sheath 2. The central tube 5 is located inside the instrument sheath 2 and between the connector body 3 and the lower connector 4. An annular space is formed between the instrument sheath 2 and the central tube 5. At least a portion of the control acquisition mainboard 6 and the motor drive device 8 are located within the annular space. Both the upper connector 1 and the lower connector 4 are sealed together with cable entry devices 9, which are used to connect cables and provide power to downhole instruments and enable communication.

[0022] In an optional embodiment, the connector body 3 integrates an internal pressure sensor, an external pressure sensor, and a flow meter, all of which are electrically connected to the control acquisition motherboard 6; the internal pressure sensor is used to acquire the water injection pressure, the external pressure sensor is used to acquire the formation pressure, and the flow meter is used to measure the flow rate into the formation.

[0023] In this embodiment, the cable-controlled dual-mode dispenser also includes a water nozzle assembly 7 and a motor drive device 8. The motor drive device 8 is mounted on the connector body 3 and is coaxially arranged with the water nozzle assembly 7. The upper end of the water nozzle assembly 7 is provided with a retrieval component for docking with a measuring and adjusting instrument or a retrieval tool to realize retrieval. At the same time, the flow rate can be adjusted by docking the water nozzle assembly 7 with the motor drive device 8.

[0024] Specifically, the faucet assembly 7 includes a valve core 71, a valve sleeve 72, a drive shaft 73, and a retrieval assembly. The drive shaft 73 rotates to drive the valve core 71 to move axially to adjust the flow area, thereby adjusting the water injection flow rate. The motor drive device 8 is coaxially arranged with the faucet assembly 7 and includes a motor 81, a transmission mechanism driven by the motor 81, an electromagnet 84, and a docking sleeve 85. The docking sleeve 85 is connected to the drive shaft 73 for transmission.

[0025] The electromagnet 84 is configured to engage or disengage the docking sleeve 85 from the transmission mechanism by energizing or de-energizing it, thereby switching between the two drive modes of the cable-controlled dual-mode dispenser: motor drive mode and instrument drive mode. In motor drive mode, the electromagnet 84 is energized, the docking sleeve 85 engages with the drive shaft 73, and the power of the motor 81 is transmitted sequentially through the transmission mechanism and the docking sleeve 85 to the drive shaft 73. In instrument drive mode, the electromagnet 84 is de-energized, the docking sleeve 85 disengages from the drive shaft 73, and the instrument can drive the drive shaft 73 through the retrieval assembly, thus achieving dual-mode switchability.

[0026] In an optional embodiment, the transmission mechanism includes a lead screw 82 and a drive rod 83. The output shaft of the motor 81, the lead screw 82, and the drive rod 83 are coaxially connected in sequence. The drive rod 83 is provided with a drive rod flat portion 831, and the mating sleeve 85 is provided with a large inner hole flat portion 851 and a small inner hole flat portion 852. The large inner hole flat portion 851 can engage or disengage with the drive rod flat portion 831, and the small inner hole flat portion 852 engages with the tip flat portion 731 of the drive shaft 73.

[0027] In an optional embodiment, the transmission mechanism further includes: a retainer 86, a connecting spring 87, and a magnet 88. An electromagnet 84 is disposed on the retainer 86, and the connecting spring 87 is sleeved on the drive rod 83. The two ends of the connecting spring 87 are respectively connected to the electromagnet 84 and the mating sleeve 85. The magnet 88 is fixedly connected to the mating sleeve 85. When the electromagnet 84 is energized, it attracts the magnet 88 and compresses the connecting spring 87, so that the large inner hole flat part 851 engages with the drive rod flat part 831. When the electromagnet 84 is de-energized, the connecting spring 87 pushes the mating sleeve 85 to disengage from the drive rod 83.

[0028] In an optional embodiment, the salvage assembly includes a salvage shaft 74 and an adjusting block 75. The salvage shaft 74 is connected to the adjusting block 75. The salvage shaft 74 has an inner flat portion 741 for engaging with the flat end portion 732 of the drive shaft 73.

[0029] In an optional embodiment, the faucet assembly 7 further includes a drive nut 76 and an actuator 77. The drive nut 76 is threadedly connected to the drive shaft 73 and has a drive nut flat portion 761 on its exterior. The actuator 77 is horizontally positioned and its output end can extend to clamp the drive nut flat portion 761 to prevent rotation, or retract to loosen the drive nut 76.

[0030] In an optional embodiment, the water nozzle assembly 7 further includes a locking mechanism, which includes a cam 78 and a retrieval spring 79. The cam 78 is disposed below the retrieval shaft 74, and the retrieval spring 79 is sleeved on the outside of the retrieval shaft 74. The cam 78, through its cooperation with the inner hole guide surface 31 and the guide inclined surface 32 on the connector body 3, realizes the locking of the water nozzle assembly 7 after deployment and the release during retrieval.

[0031] Specifically, during deployment, the inclined surface of cam 78 engages with the guide inclined surface 32 of connector body 3, thereby guiding the water nozzle assembly 7 smoothly into place and automatically rotating and locking it. In the locked state, the vertical surface of cam 78 interlocks with the lower end of retrieval shaft 74 and the inner guide surface 31 of connector body 3, thus preventing the water nozzle assembly 7 from accidentally dislodging. During retrieval, a simple upward lifting action can overcome the elastic force of retrieval spring 79 and cause cam 78 to reverse and unlock. The unlocking action is decisive and clear, avoiding the risk of jamming.

[0032] For example, the salvage assembly also includes a deployment cap 710, which is disposed on top of the nozzle assembly 7 for docking with the salvage tool.

[0033] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0034] Cable power supply and pressure acquisition: The cable enters the injector through the cable entry device 9 installed on the upper connector 1, supplying power to the injector's control acquisition main board 6, actuator 77, motor 81, and sensors, and enabling communication with ground equipment; similarly, the cable also connects to the injector at the next layer through the cable entry device 9 installed on the lower connector 4. Internal pressure sensors, external pressure sensors, and flow meters installed on the connector body 3 collect the injection pressure and formation pressure, respectively.

[0035] Intelligent flow regulation: The motor 81 is mounted on the cage 86, the lead screw 82 is rigidly connected to the output shaft of the motor 81, and the lead screw 82 is rigidly connected to the drive rod 83. When the motor 81 rotates forward or reverses, the drive rod 83 also rotates forward or reverses.

[0036] The drive rod 83 has a drive rod flat section 831 and an optical axis. The electromagnet 84 has a hollow structure in the middle, is fitted onto the drive rod 83, and is fixedly connected to the retainer 86. The connecting spring 87 is fitted onto the drive rod 83, with one end connected to the electromagnet 84 and the other end connected to the mating sleeve 85. The mating sleeve 85 has a large inner hole flat section 851 and a small inner hole flat section 852, and a magnet 88 is embedded in the mating sleeve 85. When the electromagnet 84 is energized, it attracts the magnet 88 and simultaneously compresses the connecting spring 87, causing the large inner hole flat section 851 to fit onto the drive rod flat section 831. When the motor 81 rotates forward or reverse, the mating sleeve 85 also rotates forward or reverse.

[0037] The flat tip 731 of the drive shaft 73 engages with the flat inner hole 852 of the mating sleeve 85. After the actuator 77 is energized, its output end extends out and clamps onto the flat drive nut 761 of the drive nut 76, thereby locking and preventing the drive nut 76 from rotating. When the mating sleeve 85 rotates forward, the drive shaft 73 rotates and moves upward. When the mating sleeve 85 rotates in reverse, the drive shaft 73 rotates and moves downward.

[0038] The valve core 71 is fixed on the drive shaft 73. As the drive rod 83 moves up or down, the flow area between the valve core 71 and the valve sleeve 72 changes, thereby changing the water injection volume. The injected water flows from the upper connector 1 to the central pipe 5, enters the water inlet of the water nozzle, flows through the valve sleeve 72, and the outlet of the valve sleeve 72 is directly opposite the liquid outlet. The injected water finally flows to the formation through the liquid outlet.

[0039] The flow rate is adjusted using a measuring instrument: the retrieval shaft 74 is rigidly fixedly connected to the adjusting block 75, and the measuring instrument can be docked with the adjusting block 75. When the adjusting block 75 rotates, the retrieval shaft 74 rotates accordingly. The retrieval shaft 74 is provided with an inner flat portion 741, which fits into the flat end portion 732 on the drive shaft 73. When the retrieval shaft 74 rotates, the drive shaft 73 also rotates accordingly. After the electromagnet 84 is de-energized, there is no attraction between the magnet 88 and the electromagnet 84, the connecting spring 87 springs open, the large inner hole flat part 851 of the mating sleeve 85 disengages from the drive rod flat part 831 of the drive rod 83, the tip flat part 731 of the drive shaft 73 engages with the small inner hole flat part 852 of the mating sleeve 85, the outer diameter of the optical axis of the drive rod 83 is smaller than the large inner hole flat part 851 of the mating sleeve 85, when the drive shaft 73 rotates, the mating sleeve 85 rotates freely around the drive rod 83.

[0040] After the actuator 77 is positively energized, its output shaft extends and clamps onto the drive nut flat 761 of the drive nut 76, preventing rotation. When the adjusting block 75 is rotated via the measuring and adjusting instrument, the retrieval shaft 74 rotates, and the drive shaft 73 rotates accordingly. When the retrieval shaft 74 rotates forward, the drive shaft 73 rotates and moves downward; when the retrieval shaft 74 rotates in reverse, the drive shaft 73 rotates and moves upward. The valve core 71 is fixed on the drive shaft 73 and moves upward or downward with the drive rod 83. The flow area between the valve core 71 and the valve sleeve 72 changes, and the water injection volume changes. The injected water flows from the upper connector 1 to the central pipe 5, then through the flow meter, into the water inlet of the water nozzle, and flows through the valve sleeve 72. The outlet of the valve sleeve 72 is directly opposite the liquid outlet, and the injected water finally flows to the formation through the liquid outlet.

[0041] Water tap assembly 7 deployment: After the actuator 77 is negatively energized, its output end retracts, the drive nut 76 no longer prevents rotation, and the cam 78 can rotate around its rotation axis. The cam 78 is provided with an arc surface, an inclined surface and a vertical surface. The retrieval device, holding the retrieval cap 710, slowly lowers the nozzle assembly 7. The drive shaft 73 below the nozzle assembly 7 first passes through the guide slope 32 of the connector body 3. Then, the slope on the cam 78 contacts the guide slope 32. The retrieval device presses down on the nozzle assembly 7, and the guide slope 32 exerts an upward force on the slope of the cam 78, causing the cam 78 to tend to rotate clockwise. At this time, the arc surface of the cam 78 gradually pushes the retrieval shaft 74 upward, compressing the retrieval spring 79. After the cam 78 rotates clockwise through a certain angle, the slope of the cam 78 and the guide slope 32 no longer contact each other, and the nozzle assembly 7 enters the mounting hole. The retrieval spring 79 gradually springs back, and the retrieval shaft 74 gradually moves downward. The cam 78 returns to its original position, and at the same time, the flat tip 731 of the drive shaft 73 gradually inserts into the small inner hole flat part 852 of the docking sleeve 85. At this time, the nozzle assembly 7 is in place, and the retrieval device pulls the retrieval cap 710 upward. When the arc surface of cam 78 is close to the inner guide surface 31 of connector body 3, cam 78 tends to rotate counterclockwise. The vertical surface of cam 78 is stuck at the lower end of retrieval shaft 74, preventing cam 78 from rotating counterclockwise. This restricts the water nozzle assembly 7 from moving upward, and the retrieval device continues to drag the retrieval cap 710 upward. After the retrieval device disengages from the water nozzle assembly 7, the water nozzle assembly 7 is retrieved into place.

[0042] Retrieval of the faucet assembly 7: After the actuator 77 is energized with negative power, its output end retracts, the drive nut 76 no longer prevents rotation, and the retrieval device is lowered in, so that the retrieval device grabs the stepped surface of the retrieval shaft 74. The retrieval device pulls the retrieval shaft 74 upward. When the arc surface of the cam 78 is close to the inner guide surface 42, the cam 78 has a tendency to rotate counterclockwise. The vertical surface of the cam 78 is stuck at the lower end of the retrieval shaft 74, and the cam 78 cannot rotate counterclockwise. The retrieval device continues to pull the stepped surface of the retrieval shaft 74 upward, so that the retrieval shaft 74 moves upward. The retrieval spring 79 is compressed, and the vertical surface of the retrieval shaft 74 does not interfere with the vertical surface of the cam 78. The cam 78 rotates counterclockwise. When it has rotated counterclockwise through a certain angle, the arc surface of the cam 78 does not contact the guide inclined surface 32 of the connector body 3. The faucet assembly 7 gradually leaves the mounting hole and is brought to the ground by the retrieval device, thus realizing the retrieval of the faucet assembly 7.

[0043] This utility model's cable-controlled dual-mode injector employs a retrievable nozzle assembly combined with motor drive and electromagnetic switching, enabling the injector to operate in both motor-driven and instrument-driven modes. When the motor drive fails to overcome jamming due to insufficient torque, it can switch to instrument-driven mode, utilizing its greater mechanical torque to forcibly adjust the nozzle and restore water injection function. This provides dual protection for downhole flow control, reducing unplanned well workover operations caused by minor or moderate jamming, saving operating costs and time, and ensuring the continuity and stability of water injection production. Furthermore, in the event of a serious nozzle assembly failure, a retrievable nozzle assembly can be used for retrieval, allowing for replacement and extending the injector's lifespan.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not expressly listed. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device comprising said element. Terms such as "connected" or "linked" are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect. The orientations or positional relationships indicated by terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0045] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A cable-controlled dual-mode injection device, comprising an upper joint, an instrument protection pipe, a joint body, a lower joint, a central pipe and a control acquisition mainboard, the upper joint, the instrument protection pipe and the joint body are sequentially arranged from top to bottom, and the two sections of the instrument protection pipe are sealingly connected through the joint body, the central pipe is located in the instrument protection pipe, and the control acquisition mainboard is arranged in the annular space between the central pipe and the instrument protection pipe, characterized in that, It also includes faucet components and motor drive units; The water nozzle assembly includes a valve core, a valve sleeve, a drive shaft, and a retrieval assembly. The drive shaft rotates to move the valve core axially to adjust the flow area. The retrieval assembly is located at the upper end of the water nozzle assembly and is used to dock with a measuring and adjusting instrument or a retrieval tool. The motor drive device is coaxially arranged with the water nozzle assembly and includes a motor, a transmission mechanism driven by the motor, an electromagnet, and a docking sleeve. The docking sleeve is drively connected to the drive shaft. The electromagnet is configured to engage or disengage the docking sleeve from the transmission mechanism by energizing or de-energizing it, thereby switching between the dual drive modes of the cable-controlled dual-mode dispenser. The dual-drive mode includes a motor drive mode and a measuring instrument drive mode. In the motor drive mode, the electromagnet is energized, the docking sleeve engages with the drive shaft, and the power of the motor is transmitted to the drive shaft sequentially through the transmission mechanism and the docking sleeve. In the measuring instrument drive mode, the electromagnet is de-energized, the docking sleeve disengages from the drive shaft, and the measuring instrument drives the drive shaft through the salvage assembly.

2. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, The transmission mechanism includes a lead screw and a drive rod. The output shaft of the motor, the lead screw, and the drive rod are coaxially connected in sequence. The drive rod is provided with a drive rod flat part. The mating sleeve is provided with a large inner hole flat part and a small inner hole flat part. The large inner hole flat part can engage or disengage with the drive rod flat part. The small inner hole flat part engages with the tip flat part of the drive shaft.

3. The cable-controlled dual-mode dispenser according to claim 2, characterized in that, The transmission mechanism further includes: a retainer, a connecting spring, and a magnet. The electromagnet is disposed on the retainer, the connecting spring is sleeved on the drive rod, and the two ends of the connecting spring are respectively connected to the electromagnet and the mating sleeve. The magnet is fixedly connected to the mating sleeve. When the electromagnet is energized, it attracts the magnet and compresses the connecting spring, causing the large inner hole flat part to engage with the driving rod flat part; when the electromagnet is de-energized, the connecting spring pushes the mating sleeve to disengage from the driving rod.

4. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, The salvage assembly includes a salvage shaft and an adjusting block. The salvage shaft is connected to the adjusting block. The salvage shaft has an inner flat portion for engaging with the flat end portion of the drive shaft.

5. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, The water tap assembly also includes a drive nut and an actuator. The drive nut is threadedly connected to the drive shaft, and the drive nut has a drive nut flat portion on its exterior. The actuator is horizontally positioned, and its output end can extend to clamp the drive nut flat portion to prevent rotation, or retract to loosen the drive nut.

6. The cable-controlled dual-mode dispenser according to claim 4, characterized in that, The water nozzle assembly also includes a locking mechanism, which includes a cam and a retrieval spring. The cam is located below the retrieval shaft, and the retrieval spring is sleeved outside the retrieval shaft. The cam, through its cooperation with the inner guide surface and guide slope on the connector body, enables the water nozzle assembly to be locked after deployment and released during retrieval.

7. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, The salvage assembly also includes a deployment cap, which is disposed on the top of the water nozzle assembly and is used to dock with the salvage tool.

8. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, The connector body integrates an internal pressure sensor, an external pressure sensor, and a flow meter; The internal pressure sensor is used to collect water injection pressure, the external pressure sensor is used to collect formation pressure, and the flow meter is used to measure flow rate; the internal pressure sensor, the external pressure sensor, and the flow meter are all electrically connected to the control acquisition motherboard.

9. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, An annular space is formed between the instrument protective tube and the central tube, and at least a portion of the control acquisition motherboard and the motor drive device are disposed within the annular space.

10. The cable-controlled dual-mode dispenser according to claim 1, characterized in that, Both the upper connector and the lower connector are equipped with cable entry devices for connecting cables and supplying power to downhole instruments and enabling communication.

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