A wireless communication-based stratified water injection device with controllable water injection volume

Abstract

This utility model discloses a wireless communication-based stratified water injection device with controllable water injection volume, relating to the field of stratified water injection in oilfields. To address the problem that existing stratified water injection devices cannot promptly detect abnormal water injection volumes, thus affecting the effectiveness of water control and oil stabilization, this invention discloses a wireless communication-based stratified water injection device with controllable water injection volume. The device includes a ground wireless communication controller that communicates with a ground control module, which in turn communicates with a downhole communication controller. The downhole communication controller is located within the stratified water injection mechanism, which is connected to an oil pipe suspended within a casing. A packer is set on the inner wall of the casing. This patent achieves water injection volume regulation by adjusting the size of the outlet, precisely controlling the flow rate of each layer, ensuring effective water control and oil stabilization. It features a simple structure, significantly improved work efficiency, shortened the time required for well recovery, and intelligent problem detection and timely warning.

Description

Technical Field

[0001] This utility model relates to the field of oilfield stratified water injection, and in particular to a wireless communication stratified water injection device with controllable water injection volume. Background Technology

[0002] Water injection is a primary development technology in domestic oilfields. Due to the multi-layered and heterogeneous characteristics of domestic oilfields, indiscriminate water injection can lead to single-layer surges, thus stratified water injection is widely adopted. High-density hydraulic wells or blowout methods have always been used when inserting stratified water injection tools into water injection wells. Patent application CN202220707923.0 discloses a downhole cabled stratified water injection device, including a casing and a top connector, a first water distributor, a middle connector, a second water distributor, and a bottom connector installed inside the casing and connected end-to-end. The stratified water injection device also includes a steel pipe cable, an in-well cable, a male connector, and a female connector. The upper end of the steel pipe cable is connected to the external power supply and control system, and the lower end is connected to the male connector. The male connector is compatible with the female connector, which is installed inside the top connector and connected to the first and second water distributors sequentially via the in-well cable. This patented technology allows for long-term power supply to the water distributor and bidirectional data transmission by inserting a steel pipe cable inside the connector and connecting it to a female connector inside the well using a male connector, simplifying operation. However, this device cannot monitor the water injection process in real time, and abnormal water injection rates cannot be detected and adjusted promptly, thus affecting the effectiveness of water control and oil stabilization. Utility Model Content

[0003] The purpose of this invention is to provide a wireless communication layered water injection device with controllable water injection volume. By adjusting the size of the water outlet, the water injection volume can be regulated, and the flow rate of each layer can be precisely controlled, ensuring the effect of water control and oil stabilization. The device has a simple structure, greatly improves work efficiency, shortens the time required for oil well recovery, and intelligently detects and analyzes problems and provides timely warnings, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wireless communication layered water injection device with controllable water injection volume, comprising a ground wireless communication controller and a ground control module. The ground wireless communication controller communicates with the ground control module, and the ground control module communicates with a downhole communication controller. The downhole communication controller is installed inside the layered water injection mechanism. An oil pipe is connected to the layered water injection mechanism and is suspended in the casing. A packer is set on the inner wall of the casing, and the packer is integrated with the layered water injection mechanism.

[0005] Preferably, the oil pipe is connected to the casing four-way valve, and a plug is provided at the bottom of the oil pipe.

[0006] Preferably, two layered water injection mechanisms are provided. Each layered water injection mechanism includes an upper connector, a lower connector, a circuit isolation cylinder, an intermediate connector, a first flow monitor, a first flow control component, a second flow control component, and a second flow monitor. The upper connector is threaded to the upper end of the outer shell. The lower end of the outer shell is installed on the upper end of the intermediate connector and fixed by a pin. The upper end face of the intermediate connector is connected to the water outlet of the first and second flow monitors. The first and second flow monitors are sequentially threaded to the lower end face of the circuit isolation cylinder. The first and second flow monitors are respectively connected to the first and second flow control components. The upper end of the circuit isolation cylinder is centrally connected to the lower end of the upper connector.

[0007] Preferably, the first flow monitor and the second flow monitor communicate with the ground control module, and the ground control module also communicates with the first flow control component and the second flow control component.

[0008] Preferably, the first flow control component and the second flow control component have the same structure. The first flow control component includes an annular cavity, an adjusting block, a water outlet, and a hydraulic rod. The annular cavity is connected to the water outlet, and the water outlet is connected to the water nozzle. The tail end of the annular cavity is provided with a hydraulic rod, which is connected to the adjusting block. The adjusting block is in close contact with the inner wall of the annular cavity.

[0009] Preferably, the downhole communication controller is equipped with a first communication module, which is connected to a second communication module, and the second communication module is located in the ground wireless communication controller.

[0010] Preferably, the two layered water injection mechanisms are connected by an armored cable, and the two first communication modules communicate with each other via an armored cable.

[0011] Preferably, the layered water injection mechanism is connected to the battery via wires, the battery is installed inside the battery compartment, and the battery compartment is installed outside the layered water injection mechanism.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a wireless communication-based stratified water injection device with controllable water injection volume. By activating a hydraulic rod to adjust the size of the water outlet, the water injection volume can be regulated, allowing precise control of the flow rate of each layer. This ensures effective water control and oil stabilization. The device has a simple structure, significantly improves work efficiency, and shortens the time required for oil well recovery. The first communication module records measurement data in real time and uploads the data to the ground wireless communication controller, facilitating staff to understand the working status of the stratified water injection mechanism. When abnormalities occur, timely adjustments can be made, and the device can intelligently detect and analyze problems and provide timely warnings. Attached Figure Description

[0013] Figure 1This is a partial structural schematic diagram of a wireless communication layered water injection device with controllable water injection volume according to the present invention. Figure 2 This is a schematic diagram of the layered water injection mechanism of a wireless communication layered water injection device with controllable water injection volume according to this utility model. Figure 3 This is a schematic diagram of the first flow control component of a wireless communication stratified water injection device with controllable water injection volume according to the present invention. Figure 4 This is a schematic diagram of the module connection of a wireless communication layered water injection device with controllable water injection volume according to the present invention.

[0014] In the diagram: 1. Armored cable; 2. Packer; 3. Casing four-way valve; 4. Tubing; 5. Surface wireless communication controller; 6. First communication module; 7. Downhole communication controller; 8. Layered water injection mechanism; 81. Upper connector; 82. Lower connector; 83. Circuit isolation cylinder; 84. Intermediate connector; 85. First flow monitor; 86. First flow control assembly; 861. Annular cavity; 862. Adjusting block; 863. Water outlet; 864. Hydraulic rod; 87. Second flow control assembly; 88. Second flow monitor; 9. Plug; 10. Surface control module; 11. Second communication module; 12. Battery compartment. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] To address the technical problem that existing stratified water injection devices cannot monitor water injection in real time during operation, thus failing to detect abnormal water volume and affecting the effectiveness of water control and oil stabilization, please refer to [link to relevant documentation]. Figures 1-4 This embodiment provides the following technical solution: A wireless communication-based stratified water injection device with controllable water injection volume includes a ground wireless communication controller 5 and a ground control module 10. The ground wireless communication controller 5 communicates with the ground control module 10, and the ground control module 10 communicates with a downhole communication controller 7. The downhole communication controller 7 is located within a stratified water injection mechanism 8. An oil pipe 4 is connected to the stratified water injection mechanism 8 and suspended within the casing. Two stratified water injection mechanisms 8 are connected via an armored cable 1, and two first communication modules 6 communicate via the armored cable 1, thereby adjusting the flow rate of each layer and acquiring relevant information. A packer 2, model Y341-114-55-120 / 25, is set on the inner wall of the casing. The packer 2 is relatively short, with a length of 0.9m, and has functions of setting, unsealing, and backwashing the well. The packer 2 is used to seal the casing. The system is divided into multiple layers for easy multi-layer water injection. The packer 2 is integrated with the layered water injection mechanism 8. The tubing 4 is connected to the casing four-way valve 3. The bottom of the tubing 4 is equipped with a plug 9. The downhole communication controller 7 is equipped with a first communication module 6, which is connected to a second communication module 11. The second communication module 11 is located in the surface wireless communication controller 5. The surface control module 10 is connected to the downhole communication controller 7. When an anomaly is detected in the current injection data, the water flow rate of each layer is re-adjusted through the surface wireless communication controller 5, enabling multi-layer water injection and precise control of the flow rate of each layer. The layered water injection mechanism 8 is connected to the battery through wires. The battery is installed in the battery compartment 12, which is installed outside the layered water injection mechanism 8. The battery is connected to its corresponding water distributor and provides power to the electrical modules therein.

[0017] Two layered water injection mechanisms 8 are provided. Each layered water injection mechanism 8 includes an upper connector 81, a lower connector 82, a circuit isolation cylinder 83, an intermediate connector 84, a first flow monitor 85, a first flow control component 86, a second flow control component 87, and a second flow monitor 88. The upper connector 81 is threaded to the upper end of the housing. The lower end of the housing is mounted on the upper end of the intermediate connector 84 and fixed with a pin. The upper end face of the intermediate connector 84 is connected to the outlet ends of the first flow monitor 85 and the second flow monitor 88. The first flow monitor 85 and the second flow monitor 88 are sequentially threaded to the lower end face of the circuit isolation cylinder 83. The first flow monitor 85 and the second flow monitor 88 are respectively connected to the first flow control component 86 and the second flow control component 87. The upper end of the circuit isolation cylinder 83 is connected to the center of the lower end of the upper connector 81. The first flow monitor 85 and the second flow monitor 88 communicate with the ground control module 10. The control module 10 also communicates with the first flow control component 86 and the second flow control component 87. The downhole communication controller 7 is used to convert the flow fluctuations in the tubing 4 into electrical signals and send them to the ground wireless communication controller 5. At the same time, it controls the water output of the two outlets 863 and monitors the flow rate. The ground control module 10 is used to control the wellhead water injection flow rate and monitor the flow rate. The first flow control component 86 and the second flow control component 87 have the same structure. The first flow control component 86 includes an annular cavity 861, an adjusting block 862, an outlet 863, and a hydraulic rod 864. The annular cavity 861 is connected to the outlet 863, and the outlet 863 is connected to the water nozzle. The tail end of the annular cavity 861 is provided with a hydraulic rod 864, which is connected to the adjusting block 862. The adjusting block 862 is close to the inner wall of the annular cavity 861. By activating the hydraulic rod 864, the size of the outlet 863 is adjusted, thereby realizing the regulation of the water injection volume and ensuring the effect of water control and oil stabilization.

[0018] During use, in the water injection process, the first communication module 6 uploads data from the layered water injection mechanism 8 to the ground. When the layered water injection mechanism 8 has data to upload, the downhole communication controller 7 inside the layered water injection mechanism 8 is first used as a wireless communication controller. The layered water injection mechanism 8 will send a command to the second dual-channel water distributor 15 via the armored cable 1 to upload data and close its own two-stage outlet 863. Then, the second dual-channel water distributor 15 sends its own data to the layered water injection mechanism 8 and closes its own two-stage outlet 863, waiting for the injection flow rate to reach 0. When the ground control module 10 simultaneously detects that the flow rate has decreased from the original normal water injection flow rate to almost 0, the ground control module 10 enters the stage of receiving downhole data. During the water injection process, the water is monitored by the first flow monitor 85 and the second flow monitor 88. The flow rate is monitored, and the monitoring results are transmitted to the first flow control component 86 and the second flow control component 87. The first flow control component 86 and the second flow control component 87 control the flow rate of the injected water to ensure the accuracy of the injected water volume. The water flows directly into the first injection layer through the first flow control component 86 in the layered water injection mechanism 8, and then through the second flow control component 87 of the layered water injection mechanism 8 to inject water into the second injection layer, thereby realizing layered water injection under pressure. When it is necessary to control the injection volume, the size of the outlet 863 is adjusted by activating the hydraulic rod 864 to push the adjusting block 862. When the first flow monitor 85 and the second flow monitor 88 detect that the injection volume has reached the standard, the hydraulic rod 864 is stopped by the ground control module 10.

[0019] In summary, this utility model provides a wireless communication-based layered water injection device with controllable water injection volume. By activating the hydraulic rod 864 to adjust the size of the water outlet 863, the water injection volume can be regulated. This allows for precise control of the flow rate in each layer, ensuring effective water control and oil stabilization. The device has a simple structure, significantly improves work efficiency, and shortens the time required for well recovery. The first communication module 6 records and uploads the measurement data to the ground wireless communication controller 5 in real time, facilitating staff understanding of the operation of the layered water injection mechanism 8. It allows for timely adjustments when abnormalities occur, intelligent problem detection and analysis, and timely early warning.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wireless communication layered water injection device with controllable water injection volume, comprising a ground wireless communication controller (5) and a ground control module (10), characterized in that, The ground wireless communication controller (5) communicates with the ground control module (10), and the ground control module (10) communicates with the downhole communication controller (7). The downhole communication controller (7) is installed in the layered water injection mechanism (8). The layered water injection mechanism (8) is connected to the tubing (4), which is suspended in the casing. A packer (2) is set on the inner wall of the casing. The packer (2) is integrated with the layered water injection mechanism (8). Two layered water injection mechanisms (8) are provided. The layered water injection mechanism (8) includes an upper connector (81), a lower connector (82), a circuit isolation cylinder (83), an intermediate connector (84), a first flow monitor (85), a first flow control component (86), a second flow control component (87), and a second flow monitor (88). The upper connector (81) is threaded to the upper end of the outer shell. The lower end of the outer shell is installed on the upper end of the intermediate connector (84) and fixed by a pin. The upper end face of the intermediate connector (84) is connected to the water outlet of the first flow monitor (85) and the second flow monitor (88). The first flow monitor (85) and the second flow monitor (88) are threaded to the lower end face of the circuit isolation cylinder (83) in sequence. The first flow monitor (85) and the second flow monitor (88) are respectively connected to the first flow control component (86) and the second flow control component (87). The upper end of the circuit isolation cylinder (83) is connected to the center of the lower end of the upper connector (81). The first flow monitor (85) and the second flow monitor (88) communicate with the ground control module (10), and the ground control module (10) also communicates with the first flow control component (86) and the second flow control component (87); The first flow control component (86) and the second flow control component (87) have the same structure. The first flow control component (86) includes an annular cavity (861), an adjusting block (862), a water outlet (863) and a hydraulic rod (864). The annular cavity (861) is connected to the water outlet (863), and the water outlet (863) is connected to the water nozzle. The tail end of the annular cavity (861) is provided with a hydraulic rod (864), which is connected to the adjusting block (862). The adjusting block (862) is in close contact with the inner wall of the annular cavity (861).

2. The wireless communication layered water injection device with controllable water injection volume according to claim 1, wherein, The oil pipe (4) is connected to the casing four-way valve (3), and the bottom of the oil pipe (4) is provided with a plug (9).

3. The wireless communication layered water injection device with controllable water injection volume of claim 1, wherein, The downhole communication controller (7) is equipped with a first communication module (6), which is connected to a second communication module (11). The second communication module (11) is located in the ground wireless communication controller (5).

4. The wireless communication stratified water injection device with controllable water injection volume as described in claim 1, characterized in that, The two layered water injection mechanisms (8) are connected by an armored cable (1), and the two first communication modules (6) communicate with each other by an armored cable (1).

5. The wireless communication layered water injection device with controllable water injection volume of claim 1, wherein, The layered water injection mechanism (8) is connected to the battery via wires. The battery is installed inside the battery compartment (12), which is installed outside the layered water injection mechanism (8).

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