Fishable code communication control distributor with test channel

Abstract

The application discloses a fishing wave code communication control distributor with a test channel, which comprises a long-positioned distributor working cylinder and a fishing distributor short section, wherein the structure of the fishing distributor short section is divided into four parts, i.e., a short section shell, a clamping fishing assembly, an electrical control assembly and a transmission and water nozzle adjusting assembly; the short section shell of the fishing distributor short section is provided with four through holes in the axial direction, wherein a hole and a c hole are mounting holes of connecting screw rods, a b hole is a reserved test channel hole, and a d hole is used for mounting the clamping fishing assembly, the electrical control assembly and the transmission and water nozzle adjusting assembly from top to bottom. The device has the advantages of simple fishing process, high fishing success rate, high injection volume control precision, no need to move a pipe column for replacement, avoidance of well repair operation, and the like. The test channel of the fishing distributor short section can be used for water absorption profile testing without changing the injection state, so that the testing efficiency and precision are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drilling equipment, and relates to a fishing wave code communication control water distributor. BACKGROUND

[0002] With the increase of oilfield exploitation time, the reservoir pressure gradually decreases, the driving capacity for crude oil is weakened, and the oil well yield is greatly reduced. In order to ensure that the crude oil in the reservoir continues to migrate to the oil well, it is necessary to continuously supplement the fluid to the reservoir to enhance the formation energy, and the oilfield water injection is the most economical and effective technical means for improving the recovery rate of oil and gas fields at the present stage. Since multiple reservoirs are exploited in one oil well, the energy reduction of each reservoir in the oil production process has a large difference, so the energy supplement of each reservoir needs to be treated differently. Generally, the layered water injection is adopted, and the downhole water distributor is used to realize the injection of different water injection amounts of each layer. With the development of separate injection technology, a wave code communication control separate injection technology appears, which greatly improves the efficiency and precision of layered water injection. The key tool of the separate injection technology is a wave code communication control water distributor, which is powered by a downhole high-temperature battery. According to the oilfield management requirements, the service life of the downhole tool must be more than 6 years, and the existing downhole high-temperature battery power supply only meets the use of the wave code communication control water distributor for 4 years.

[0003] Chinese patent CN202211619267.X (a fishing wave code communication water distribution device and process method) provides a fishing wave code communication water distributor device, which generally contains a water distributor working barrel and a fishing wave code communication water distributor. The technical core is to use a wire or cable to fish the fishing wave code communication water distributor when the battery needs to be replaced, and then put it into the water distributor working barrel after replacing the battery, thereby effectively solving the problem of short battery life of the wave code communication control water distributor in the conventional wave code communication separate injection technology. However, after the fishing wave code communication water distributor of the patent is put into the water distributor working barrel, it occupies the center channel position, and the water absorption profile cannot be tested.

[0004] Therefore, on the basis of the existing fishing wave code communication water distributor, a test channel is introduced, and the structure and function are further improved, so as to develop a fishing wave code communication control water distributor with a test channel. The water distributor is lowered to the corresponding water injection layer, and the purposes of efficient and accurate water injection allocation and water absorption profile are achieved. SUMMARY

[0005] The purpose of the application is to provide a fishing wave code communication control water distributor with a test channel, which solves the problem that the existing fishing wave code communication water distributor occupies the center channel position after being put into the water distributor working barrel, resulting in the problem that the water absorption profile cannot be tested.

[0006] The technical solution adopted in this invention is a drop-and-retrieve wavecode communication control water distributor with a test channel, comprising a long water distributor working cylinder and a drop-and-retrieve water distributor short section.

[0007] The structure of the short section of the water distributor is divided into four parts: short section shell, locking and retrieval assembly, electrical control assembly, and transmission and water nozzle adjustment assembly.

[0008] The short section housing of the retrieval water distributor has four through holes along the axial direction. Among them, holes a and c are mounting holes for connecting screws, hole b is a reserved test channel hole, and hole d is used to install the locking and retrieval assembly, electrical control assembly, and transmission and water nozzle adjustment assembly from top to bottom.

[0009] The water distributor with a test channel that can be retrieved via wavecode communication control of the present invention is further characterized in that:

[0010] The structure of the long-positioned water distributor working cylinder includes an upper connector and a connecting cylinder. The internal thread of the lower port of the upper connector is screwed into the external thread of the upper port of the connecting cylinder. The external thread of the lower port of the connecting cylinder is screwed into the internal thread of the upper port of the transition piece. The external thread of the lower port of the transition piece is screwed into the internal thread of the upper port of the water distribution cavity shell. The internal thread of the lower port of the water distribution cavity shell is screwed into the external thread of the upper port of the lower connector. These five components are connected vertically and pass through to form a cavity. A water injection channel is opened on the side wall of the lower connector.

[0011] The internal structure of the short-section housing includes a retrieval fixing component, an electrical control housing, and an electrical cavity housing. The lower port of the retrieval fixing component has an external thread that engages with the upper port of the electrical cavity housing's internal thread. The lower port of the electrical cavity housing's internal thread engages with the upper port of the sensor fixing component's external thread. The lower port of the sensor fixing component is inserted into a mounting hole at the upper end of the shaft housing. A water-filled housing's upper end is inserted into a mounting hole at the lower end of the shaft housing. An electrical control housing is housed within the electrical cavity housing, and its upper end is inserted into a placement hole at the lower end of the retrieval fixing component. This placement hole is also engaged with the upper end of the sensor fixing component. The lower mounting hole of the sensor fixing component is inserted into the upper end of a channel connector, which is also inserted into a mounting hole at the upper end of the shaft housing.

[0012] The structure of the aforementioned locking and retrieval assembly includes a retrieval rod, an adjusting rod, and a positioning component housing. The internal thread at the lower end of the adjusting rod engages with the external thread at the upper end of the positioning component housing. The outer wall of the positioning component housing has a pre-drilled hole and a radial mounting hole. A connecting rod is mounted on the longitudinal axis of the positioning component housing. The external thread of the middle section of the connecting rod engages with the thread at the upper end of the wedge. A positioning cam is hinged to the connecting rod using a fixing pin, and a torsion spring is mounted on the fixing pin. An opening / closing arm is installed in the radial mounting hole of the positioning component housing. The guide groove on the inner wall of the opening / closing arm cooperates with the guide strip on the outer surface of the wedge. The lower end of the connecting rod is inserted into the blind hole of the plug. The external thread at the upper end of the plug engages with the internal thread at the lower end of the positioning component housing. The upper end of the connecting rod engages with the internal thread at the lower end of the retrieval rod. The retrieval rod extends upwards out of the cavity of the adjusting rod. An adjusting spring is mounted on the step at the lower end of the retrieval rod, and the upper end of the adjusting spring abuts against the narrow neck of the adjusting rod.

[0013] The external thread of the lower end of the plug in the retrieval assembly is screwed into the internal thread of the mounting hole of the retrieval fixture.

[0014] The electrical control component comprises a battery pack, a circuit control component, and a pressure sensor. The battery pack and the circuit control component are housed in the inner cavity of the electrical control housing. The pressure sensor is housed in the inner cavity reserved at the lower end of the sensor fixture. The sensor fixture has a wiring channel, through which the pressure sensor is connected to the circuit control component and the battery pack.

[0015] The transmission and water nozzle adjustment assembly comprises a geared motor, a transmission screw, and a transmission rod. The geared motor is connected to the circuit control assembly and battery pack via a wiring channel. The lower end of the geared motor housing is fixedly connected to the upper end of the motor fixing component. The transmission shaft of the geared motor is integrally connected to the transmission screw via a coupling. The transmission screw forms a trapezoidal thread pair with the screw nut downwards. The internal thread at the lower end of the screw nut engages with the external thread at the upper end of the transmission rod. A guide pin is provided along the diameter direction at the upper end of the transmission rod, below the lower end face of the transmission screw. The transmission screw, guide pin, screw nut, and transmission rod are integrated and fitted together in the inner cavity of the shaft housing. The internal thread at the upper port of the shaft housing engages with the external thread at the lower end of the motor fixing component. A dynamic seal is installed in the internal thread at the lower port of the shaft housing. A clamping nut is installed along the lower port of the shaft housing. The external thread at the lower end of the transmission rod engages with the internal thread in the blind hole at the upper end of the connector. The external thread at the lower end of the connector engages with the internal thread in the blind hole at the upper end of the conical valve head.

[0016] The transmission and water nozzle adjustment assembly is screwed into the inner cavity at the upper end of the water injection housing.

[0017] A valve core seal is provided between the lower stepped surface of the connector and the upper surface of the conical valve head.

[0018] The connecting cylinder, transition piece, and lower connector all have their own sealing grooves at the upper and lower port mating positions; in addition, the electrical control housing, battery pack, sensor fixing piece, channel connector, and shaft housing all have their own sealing grooves at the upper and lower port mating positions; and all sealing grooves are equipped with corresponding fluororubber sealing rings.

[0019] The beneficial effects of the present invention include the following aspects:

[0020] 1) The drop-off and retrieval process is simple and easy to operate, with a high success rate; 2) The water injection volume control is highly accurate, and the water injection volume can be automatically adjusted according to the set time or given instructions; 3) The tubing can be replaced without moving the tubing string, avoiding well repair operations and saving costs; 4) The test channel of the drop-off and retrieval water distributor section can be used to conduct water intake profile tests without changing the water injection state, improving test efficiency and accuracy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the short section of the retrieving water distributor in Embodiment 1 of the present invention, which is fixed in the inner hole of the working cylinder of the long water distributor.

[0022] Figure 2 This is a schematic diagram of the structure of the short section of the water distribution device in Embodiment 1 of the present invention;

[0023] Figure 3a This is a cross-sectional schematic diagram of the four inner holes of the short section of the retrieving water distributor according to Embodiment 1 of the present invention; Figure 3b This is a schematic diagram of the axial half-section of the short section of the retrieving water distributor according to Embodiment 1 of the present invention; Figure 3c This is a schematic diagram of the radial half-section of the short section of the retrieving water distributor in Embodiment 1 of the present invention;

[0024] Figure 4a This is a diagram showing the locking state of the short section locking assembly of the water distributor in Embodiment 2 of the present invention; Figure 4b This is an initial state diagram of the short section locking and retrieval assembly of the retrieval water distributor according to Embodiment 2 of the present invention; Figure 4c This is a partial schematic diagram of the short section locking and retrieval assembly of the retrieval water distributor in Embodiment 2 of the present invention;

[0025] Figure 5 This is a schematic diagram showing the position of the water valve when it is fully open in Embodiment 3 of the present invention;

[0026] Figure 6 This is a schematic diagram showing the position where the water valve is completely closed in Embodiment 3 of the present invention;

[0027] Figure 7 This is a schematic diagram of the transmission and water nozzle adjustment assembly mechanism of Embodiment 3 of the present invention.

[0028] In the diagram, 1. Upper connector, 2. Connecting cylinder, 3. Transition piece, 4. Water distribution chamber shell, 5. Lower connector, 6. Salvage fixing piece, 7. Electrical control shell, 8. Battery pack, 9. Electrical cavity shell, 10. Circuit control assembly, 11. Sensor fixing piece, 12. Pressure sensor, 13. Channel connector, 14. Shaft shell, 15. Water injection shell, 16. Salvage rod, 17. Adjusting rod, 18. Adjusting spring, 19. Positioning piece shell, 20. Positioning cam, 21. Connecting... 21. Connecting rod, 22. Wedge block, 23. Opening and closing arm, 24. Plug, 25. Torsion spring, 26. Fixing pin, 27. Gear motor, 28. Motor fixing part, 29. Coupling, 30. Drive screw, 31. Screw nut, 32. Guide pin, 33. Shaft housing, 34. Dynamic seal, 35. Compression nut, 36. Drive rod, 37. Connecting part, 38. Valve core seal, 39. Conical valve head, 40. Locking nut, 41. Connecting screw, 42. Water injection channel. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] In the following description of the present invention, the terms "upper," "lower," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to 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, they should not be construed as limiting the present invention.

[0031] Reference Figure 1 , Figure 3a , Figure 3c The overall structure of the device of the present invention includes two main parts: a long water distributor working cylinder and a short section of a retrievable water distributor. The structure of the short section of the retrievable water distributor is divided into four parts: a short section shell, a locking and retrievable assembly, an electrical control assembly, and a transmission and water nozzle adjustment assembly. The short section shell of the retrievable water distributor has four through holes along the axial direction. Among them, holes a and c are mounting holes for connecting screw 41, hole b is a reserved test channel hole, and hole d is used to install the aforementioned locking and retrievable assembly, electrical control assembly, and transmission and water nozzle adjustment assembly from top to bottom.

[0032] Reference Figure 2The structure of the working cylinder of the long-positioned water distributor is as follows, from top to bottom: upper connector 1, connecting cylinder 2, transition piece 3, water distribution chamber shell 4, and lower connector 5. The internal thread of the lower port of the upper connector 1 is screwed into the external thread of the upper port of the connecting cylinder 2. The external thread of the lower port of the connecting cylinder 2 is screwed into the internal thread of the upper port of the transition piece 3. The external thread of the lower port of the transition piece 3 is screwed into the internal thread of the upper port of the water distribution chamber shell 4. The internal thread of the lower port of the water distribution chamber shell 4 is screwed into the external thread of the upper port of the lower connector 5. These five components are connected vertically and pass through to form a cavity. The side wall of the lower connector 5 has a water injection channel 42.

[0033] Reference Figure 1 , Figure 3b , Figure 7 The internal structure of the short-section housing includes a salvage fixing component 6, an electrical control housing 7, an electrical cavity housing 9, a sensor fixing component 11, a channel connector 13, a shaft housing 14, and a water injection housing 15. The lower port of the salvage fixing component 6 is threaded with the upper port of the electrical cavity housing 9. The lower port of the electrical cavity housing 9 is threaded with the upper port of the sensor fixing component 11. The lower port of the sensor fixing component 11 is inserted into the mounting hole at the upper end of the shaft housing 14. The upper end of the water injection housing 15 is inserted into the mounting hole at the lower end of the shaft housing 14. The electrical control housing 7 is disposed in the inner cavity of the electrical cavity housing 9, and the upper end of the electrical control housing 7 is inserted into the placement hole at the lower end of the salvage fixing component 6. The placement hole at the lower end of the electrical control housing 7 is inserted into the upper end of the sensor fixing component 11. The lower mounting hole of the sensor fixing component 11 is inserted into the upper end of the channel connector 13. The lower end of the channel connector 13 is inserted into the mounting hole at the upper end of the shaft housing 14.

[0034] Reference Figure 4a , Figure 4b , Figure 4cThe structure of the positioning and retrieval assembly includes a retrieval rod 16, an adjusting rod 17, a positioning housing 19, and a connecting rod 21. The internal thread at the lower end of the adjusting rod 17 is threaded into the external thread at the upper end of the positioning housing 19. The outer wall of the positioning housing 19 has a pre-drilled hole and a radial mounting hole. A connecting rod 21 is mounted on the longitudinal axis of the positioning housing 19. The external thread of the middle section of the connecting rod 21 is threaded into the upper end of the wedge block 22. A positioning cam 20 is hinged to the connecting rod 21 using a fixing pin 26. The pre-drilled hole accommodates the extension dimension of the positioning cam 20 during rotation. A torsion spring 25 is mounted on the fixing pin 26 to provide rotational force for the positioning cam 20. An opening and closing arm 2 is installed in the radial mounting hole of the positioning housing 19. 3. The guide groove on the inner wall of the retractable arm 23 cooperates with the guide strip on the outer surface of the wedge 22, so that the retractable arm 23 can retract or extend radially as the wedge 22 moves up or down; the lower end of the connecting rod 21 is inserted into the blind hole of the plug 24, the external thread of the upper end of the plug 24 is screwed into the internal thread of the lower end of the positioning component housing 19, the upper end of the connecting rod 21 is screwed into the internal thread of the lower end of the retrieval rod 16, the retrieval rod 16 extends upward out of the cavity of the adjusting rod 17, and an adjusting spring 18 is provided on the step at the lower end of the retrieval rod 16, the upper end of the adjusting spring 18 is abutted against the narrow neck of the adjusting rod 17; the external thread of the lower outer circle of the plug 24 in the locking retrieval assembly is screwed into the internal thread of the reserved mounting hole of the retrieval fixing component 6;

[0035] The structure of the electrical control component includes a battery pack 8, a circuit control component 10, and a pressure sensor 12. The battery pack 8 and the circuit control component 10 are disposed in the inner cavity of the electrical control housing 7. The pressure sensor 12 is disposed in the inner cavity reserved at the lower end of the sensor fixing component 11. A wire passage is provided in the sensor fixing component 11. The pressure sensor 12 is connected to the circuit control component 10 and the battery pack 8 through the wire passage.

[0036] Reference Figure 7The structure of the transmission and water nozzle adjustment assembly includes a high-temperature resistant geared motor 27, a transmission screw 30, and a transmission rod 36. The geared motor 27 is also connected to the circuit control assembly 10 and the battery pack 8 via the aforementioned wiring channel. The lower end of the geared motor 27 housing is fixedly connected to the upper end of the motor fixing component 28 by multiple circumferential pins. The transmission shaft of the geared motor 27 is integrally connected downwards to the transmission screw 30 via a coupling 29. The transmission screw 30 forms a trapezoidal thread pair with the screw nut 31 downwards. The lower internal thread of the screw nut 31 engages with the upper external thread of the transmission rod 36. A guide pin 32 is provided along the diameter direction at the upper end of the transmission rod 36, below the lower end face of the transmission screw 30. The transmission screw 30, guide pin 32, screw nut 31, and transmission rod 36 are all connected. The rods 36 are connected as a whole and are fitted together in the inner cavity of the shaft housing 33. The internal thread of the upper end of the shaft housing 33 is screwed into the external thread of the lower end of the motor fixing part 28. A dynamic seal 34 is installed in the internal thread of the lower end of the shaft housing 33. A clamping nut 35 is installed along the lower end of the shaft housing 33. The dynamic seal 34 and the clamping nut 35 are fitted together on the transmission rod 36 to form a clamping dynamic seal. The external thread of the lower end of the transmission rod 36 is screwed into the internal thread in the blind hole at the upper end of the connector 37. The external thread of the lower end of the connector 37 is screwed into the internal thread in the blind hole at the upper end of the conical valve head 39. A valve core seal 38 is provided between the lower stepped surface of the connector 37 and the upper surface of the conical valve head 39. The transmission and water nozzle adjustment assembly is screwed into the inner cavity at the upper end of the water injection housing 15 by threads. When the geared motor 27 rotates, it drives the transmission screw 30. The transmission screw 30 and the screw nut 31 are a trapezoidal thread pair. Under the action of the guide pin 32, the rotation of the transmission screw 30 can drive the screw nut 31 and the transmission rod 36 to move downward or upward along the axial direction, thus opening or closing the valve port.

[0037] The connecting cylinder 2, transition piece 3, lower connector 5, electronic control housing 7, battery pack 8, sensor fixing piece 11, channel connecting piece 13, and shaft housing 33 all have their own sealing grooves at the upper and lower port docking positions. The sealing performance of the components that need to be sealed is ensured by using fluororubber sealing rings.

[0038] After all the above components are installed in place, they are connected and fixed together by two sets of connecting screws 41 and their locking nuts 40, forming a whole.

[0039] The short section of the retrieving water distributor has a built-in eccentric test water injection channel with a diameter of 24mm, which ensures the deployment of test instruments.

[0040] The working principle of this invention is:

[0041] 1) The working cylinder of the extended water distributor is threaded onto the water distribution tubing and lowered to the target location downhole along with the tubing. The drop-and-retrieve water distributor section can be deployed and locked inside the target water distributor using specialized deployment equipment. During downhole deployment, the deployment equipment pulls the retrieval rod upwards, locking the deployment components in their initial state. At this time, the positioning cam and the retractable arm are in the retracted state. During deployment, the deployment equipment no longer pulls the retrieval rod; the rod moves downwards under the action of the adjusting spring, causing the wedge on it to move downwards. Because the retractable arm has a guide groove that engages with the wedge surface of the wedge guide groove, the retractable arm opens outwards as the wedge moves downwards, locking itself in place. The positioning cam also rotates under the action of the torsion spring until it stops at the set position, at which point the positioning cam has opened outwards and locked itself in place. See [link to details]. Figure 1 This is a schematic diagram of the structure where the short section of the water distributor is locked inside the working cylinder of the long water distributor.

[0042] 2) The electrical control component's pressure sensor monitors downhole pressure in real time. When a specific pressure fluctuation is detected, the pressure signal is converted into a data signal and transmitted to the circuit control component. The circuit control component then controls the rotation of the geared motor. When the geared motor rotates in reverse, it drives the transmission screw. Since the transmission screw and screw nut are a trapezoidal thread pair, the rotation of the transmission screw, under the action of the guide pin, allows the screw nut and transmission rod to move upwards until they reach a limited position and stop. At this point, the valve opening is 100%, the valve port is fully open, and water can be injected into the well site through the water injection channel.

[0043] 3) When the geared motor rotates, it drives the transmission screw. Since the transmission screw and screw nut are a trapezoidal thread pair, the rotation of the transmission screw can cause the screw nut and transmission rod to move downwards until they reach the limit position and stop. At this time, the valve opening is 0% and the valve port is completely closed.

[0044] 4) After the water injection valve is closed, the retrieval equipment pulls the retrieval rod upward to lock the retrieval component and reset it. The retrieval water distributor section can then be moved to the next target water injection layer.

[0045] Example 1

[0046] Reference Figure 1 , Figure 2 , Figure 3a , Figure 3b , Figure 3cBefore the initial deployment, the device of this invention assembles the extended water distributor working cylinder and the drop-and-retrieve water distributor short section on the ground. The extended water distributor working cylinder is threaded onto the water distribution string and lowered to the target location in the well along with the water distribution string. The ground controller sends commands to adjust the stratified water injection volume for normal water injection. When the battery power is low or the water nozzle is blocked, the drop-and-retrieve equipment is used to retrieve the drop-and-retrieve water distributor short sections from top to bottom to the ground. New drop-and-retrieve water distributor short sections are then sequentially placed back into the extended water distributor working cylinder from bottom to top and locked in place. Then, water injection adjustment and normal water injection are performed according to the procedure.

[0047] The method of using the long water distributor working cylinder and the drop-and-retrieve water distributor short section together downhole allows for the deployment of one drop-and-retrieve water distributor short section within multiple long water distributor working cylinders, since the structural dimensions of the long water distributor working cylinder are all the same.

[0048] Example 2

[0049] Reference Figure 4a , Figure 4b , Figure 4c During the descent, the retrieval equipment pulls the retrieval rod 16 upwards, locking the retrieval assembly in its initial state. At this time, the positioning cam 20 and the retracting arm 23 are in the retracted state. During deployment, the retrieval equipment no longer pulls the retrieval rod 16. Under the action of the adjusting spring 18, the retrieval rod 16 moves downwards, causing the wedge block 22 on it to move downwards. Because the retracting arm 23 engages with the wedge surface of the wedge block 22, the retracting arm 23 opens outwards as the wedge block 22 moves downwards, locking itself in place. The positioning cam 20 also rotates under the action of the torsion spring 25 until it stops at the set position, at which point the positioning cam 20 has opened outwards and locked itself in place. When releasing the lock, the retrieval equipment pulls the retrieval rod 16 upwards to lock the retrieval assembly back to its original position.

[0050] Example 3

[0051] See Figure 5 , Figure 6 , Figure 7 In state 1, when the geared motor 27 rotates in reverse, it drives the transmission screw 30. Since the transmission screw 30 and the screw nut 31 are a trapezoidal thread pair, the rotation of the transmission screw 30, under the action of the guide pin 32, can make the screw nut 31 and the transmission rod 36 move upward until they reach the limit position and then stop. At this time, the valve opening is 100% and the valve port is fully open.

[0052] State 2: When the geared motor 27 rotates forward, it drives the transmission screw 30. Since the transmission screw 30 and the screw nut 31 are a trapezoidal thread pair, the rotation of the transmission screw 30, under the action of the guide pin 32, can cause the screw nut 31 and the transmission rod 36 to move downward until they reach the limit position and stop. At this time, the valve opening is 0% and the valve port is completely closed.

[0053] Example 4

[0054] The long water distributor working cylinder and the drop-and-retrieve water distributor short section are used separately downhole. Since the structural dimensions of the long water distributor working cylinder are all the same, one set of drop-and-retrieve water distributor short section can be used to inject water into multiple sets of long water distributor working cylinders. The long water distributor working cylinder is screwed onto the water distribution string and is lowered downhole to the target position along with the water distribution string.

[0055] The pressure sensor in the electrical control component detects the downhole pressure in real time. When a specific pressure fluctuation is detected, the pressure signal is converted into a data signal and transmitted to the circuit control component, which then controls the geared motor 27 to rotate.

[0056] In summary, the device of this invention has multiple functions, including data acquisition, automatic flow regulation, automatic measurement and adjustment, seal verification, pressure recovery testing, and injection rotation. It uses pressure or flow waves to achieve bidirectional communication with the ground controller, allowing for real-time data reading and control. Simultaneously, it eliminates the drawback of existing concentric drop-and-retrieve processes that occupy the pipeline channel and cannot simultaneously perform water intake profile testing. This water distributor uses concentric drop-and-retrieve with automatic guiding docking, overcoming the low success rate of eccentric drop-and-retrieve. It is simple and convenient to operate, greatly reducing the difficulty of the work.

Claims

1. A water distributor with a test channel and retrievable wavecode communication control, characterized in that: It consists of a long water distributor working cylinder and a short section of a retrievable water distributor. The structure of the short section of the retrievable water distributor is divided into four parts: short section shell, locking and retrievable assembly, electrical control assembly, and transmission and water nozzle adjustment assembly. The short section housing of the retrieval water distributor has four through holes along the axial direction. Among them, holes a and c are mounting holes for connecting screws (41), hole b is a reserved test channel hole, and hole d is used to install the locking retrieval assembly, electrical control assembly and transmission and water nozzle adjustment assembly from top to bottom. The internal structure of the short-section housing includes a retrieval fixing component (6), an electrical control housing (7), and an electrical cavity housing (9). The lower port external thread of the retrieval fixing component (6) is threaded into the upper port internal thread of the electrical cavity housing (9). The lower port internal thread of the electrical cavity housing (9) is threaded into the upper port external thread of the sensor fixing component (11). The lower port of the sensor fixing component (11) is inserted into the mounting hole at the upper end of the shaft housing (14), and the lower end mounting hole of the shaft housing (14) is... The upper end of the water-filled outer shell (15) is inserted; the inner cavity of the electrical cavity shell (9) is provided with an electrical control shell (7), and the upper end of the electrical control shell (7) is inserted into the mounting hole at the lower end of the salvage fixing part (6), the mounting hole at the lower end of the electrical control shell (7) is inserted into the upper end of the sensor fixing part (11); the mounting hole at the lower end of the sensor fixing part (11) is inserted into the upper end of the channel connector (13), and the lower end of the channel connector (13) is inserted into the mounting hole at the upper end of the shaft shell (14); The structure of the locking and retrieval assembly includes a retrieval rod (16), an adjusting rod (17), and a positioning housing (19). The internal thread at the lower end of the adjusting rod (17) is threaded into the external thread at the upper end of the positioning housing (19). The outer wall of the positioning housing (19) has a pre-drilled hole and a radial mounting hole. A connecting rod (21) is installed on the longitudinal axis of the positioning housing (19). The external thread of the middle section of the connecting rod (21) is threaded into the upper end of the wedge block (22). A positioning cam (20) is hinged to the connecting rod (21) using a fixing pin (26). A torsion spring (25) is fitted on the fixing pin (26). An opening and closing arm (23) is installed in the radial mounting hole of the positioning housing (19). The guide groove on the inner wall of the retractable arm (23) and the guide strip on the outer surface of the wedge (22) cooperate with each other; the lower end of the connecting rod (21) is inserted into the blind hole of the plug (24), the external thread of the upper end of the plug (24) is screwed into the internal thread of the lower end of the positioning component housing (19), the upper end of the connecting rod (21) is screwed into the internal thread of the lower end of the retrieval rod (16), the retrieval rod (16) extends upward into the cavity of the adjusting rod (17), an adjusting spring (18) is provided on the step at the lower end of the retrieval rod (16), and the upper end of the adjusting spring (18) is abutted against the narrow neck of the adjusting rod (17); the external thread of the lower outer circle of the plug (24) in the locking retrieval assembly is screwed into the internal thread of the mounting hole of the retrieval fixing component (6).

2. The drop-and-retrieve wavecode communication control water distributor with a test channel according to claim 1, characterized in that: The structure of the working cylinder of the long-positioned water distributor is as follows: it includes an upper connector (1) and a connecting cylinder (2). The internal thread of the lower port of the upper connector (1) is screwed into the external thread of the upper port of the connecting cylinder (2). The external thread of the lower port of the connecting cylinder (2) is screwed into the internal thread of the upper port of the transition piece (3). The external thread of the lower port of the transition piece (3) is screwed into the internal thread of the upper port of the water distribution chamber shell (4). The internal thread of the lower port of the water distribution chamber shell (4) is screwed into the external thread of the upper port of the lower connector (5). The upper connector (1), the connecting cylinder (2), the transition piece (3), the water distribution chamber shell (4), and the lower connector (5) are connected vertically and pass through to form a cavity. The side wall of the lower connector (5) has a water injection channel (42).

3. The drop-and-retrieve wavecode communication control water distributor with a test channel according to claim 1, characterized in that: The structure of the electrical control component includes a battery pack (8), a circuit control component (10), and a pressure sensor (12). The battery pack (8) and the circuit control component (10) are disposed in the inner cavity of the electrical control housing (7). The pressure sensor (12) is disposed in the inner cavity reserved at the lower end of the sensor fixing component (11). A wire passage is provided in the sensor fixing component (11). The pressure sensor (12) is connected to the circuit control component (10) and the battery pack (8) through the wire passage.

4. The drop-and-retrieve wavecode communication control water distributor with a test channel according to claim 1, characterized in that: The structure of the transmission and water nozzle adjustment assembly includes a geared motor (27), a transmission screw (30), and a transmission rod (36). The geared motor (27) is connected to the circuit control assembly (10) and the battery pack (8) through a wiring channel. The lower end of the geared motor (27) housing is fixedly connected to the upper end of the motor fixing part (28). The transmission shaft of the geared motor (27) is integrally connected to the transmission screw (30) downward through a coupling (29). The transmission screw (30) forms a trapezoidal thread pair with the screw nut (31) downward. The internal thread at the lower end of the screw nut (31) is screwed into the external thread at the upper end of the transmission rod (36). The upper end of the transmission rod (36) is lower than the lower end face of the transmission screw (30). A guide pin (32) is provided along the diameter direction. The transmission screw (30), guide pin (32), screw nut (31), and transmission rod (36) are connected as one unit and are fitted together in the inner cavity of the shaft housing (33). The internal thread of the upper port of the shaft housing (33) is screwed into the external thread of the lower end of the motor fixing part (28). A dynamic seal (34) is installed in the internal thread of the lower port of the shaft housing (33). A clamping nut (35) is installed along the lower port of the shaft housing (33). The external thread of the lower end of the transmission rod (36) is screwed into the internal thread in the blind hole at the upper end of the connector (37). The external thread of the lower end of the connector (37) is screwed into the internal thread in the blind hole at the upper end of the conical valve head (39). The transmission and water nozzle adjustment assembly is screwed into the inner cavity at the upper end of the water injection housing (15).

5. The drop-and-retrieve wavecode communication control water distributor with a test channel according to claim 4, characterized in that: A valve core seal (38) is provided between the lower stepped surface of the connector (37) and the upper surface of the conical valve head (39).

6. The retrievable wavecode communication control water distributor with a test channel according to any one of claims 1, 2, 3 or 4, characterized in that: The upper and lower ports of the connecting cylinder (2), transition piece (3) and lower connector (5) are each provided with their own sealing grooves; in addition, the upper and lower ports of the electronic control housing (7), battery pack (8), sensor fixing piece (11), channel connector (13) and shaft housing (33) are each provided with their own sealing grooves; all sealing grooves are provided with corresponding fluororubber sealing rings.

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