Compressed air unit for carbon dioxide oil displacement
By combining components such as air compressors, PLC controllers, and filters, the carbon dioxide oil-driving device achieves autonomous adjustment and impurity removal, solving the problem of insufficient autonomous adjustment and impurity removal in existing devices, and improving working efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU WEIDONG MACHINERY
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-03
AI Technical Summary
Existing compressed air devices for carbon dioxide-driven oil recovery lack sufficient self-regulation capabilities and have limited ability to remove impurities such as dust and moisture from compressed air, resulting in insufficient working efficiency and stability.
It employs components such as first and second air compressors, PLC controller, solenoid valve, air pressure sensor, circuit amplification module and filter to achieve autonomous air supply regulation and remove impurities through oil removal, drying, water removal and dust removal filters to ensure stable air supply.
It achieves a stable supply of compressed air and efficient removal of impurities, thus improving the working efficiency and stability of carbon dioxide oil displacement.
Smart Images
Figure CN224453028U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of carbon dioxide flooding equipment, and in particular to a compressed air device for carbon dioxide flooding. Background Technology
[0002] Carbon dioxide enhanced oil recovery (CED) technology involves injecting carbon dioxide into the oil reservoir to improve oil recovery. The International Energy Agency estimates that the world's resources suitable for CED development are approximately 300-600 billion barrels. Because carbon dioxide is a gas with high solubility in both oil and water, when dissolved in large quantities in crude oil, it can cause the crude oil to expand in volume, decrease in viscosity, and reduce the interfacial tension between oil and water. Compared to other oil recovery technologies, CED has advantages such as wide applicability, low cost, and significantly improved oil recovery. This technology not only meets the needs of oilfield development but also solves the problem of carbon dioxide sequestration, protecting the atmospheric environment.
[0003] Existing compressed air devices for carbon dioxide-driven oil recovery lack self-regulation capabilities and have limitations in removing impurities such as dust and moisture from compressed air. Overall working efficiency and stability need to be improved. Utility Model Content
[0004] The purpose of this invention is to provide a compressed air device for carbon dioxide oil displacement that can perform autonomous adjustment operations, while effectively removing impurities such as dust and water vapor from the compressed air, thereby improving the efficiency and stability of carbon dioxide oil displacement.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] The compressed air device for carbon dioxide-driven oil production includes a first air compressor and a second air compressor. An air storage tank is provided on one side of the first air compressor and the second air compressor. An air guide pipe is installed at the outlet end of both the first air compressor and the second air compressor, and the other end of the air guide pipe is connected to the inlet end of the air storage tank. A solenoid valve is installed near the outlet port of both the first air compressor and the second air compressor.
[0007] By adopting the above technical solution, a stable supply of compressed air can be achieved using the first air compressor and the second air compressor.
[0008] Furthermore, an electrical cabinet is provided on one side of the first air compressor and the second air compressor. The electrical cabinet is equipped with a PLC controller, a first relay, and a second relay. The PLC controller is electrically connected to the control terminals of the first relay and the second relay, respectively. The first relay is electrically connected to the first air compressor, and the second relay is electrically connected to the second air compressor.
[0009] By adopting the above technical solution, the operation of the first air compressor and the second air compressor can be controlled by a PLC controller.
[0010] Furthermore, a mounting hole is provided on the side surface of the gas storage tank, and a pressure sensor is installed inside the mounting hole. A circuit amplification module is installed on the side surface of the gas storage tank, and the pressure sensor is electrically connected to the circuit amplification module. An ADC conversion module is inserted into the slot of the PLC controller, and the circuit amplification module is electrically connected to the ADC conversion module.
[0011] By adopting the above technical solutions, effective monitoring and control operations can be carried out.
[0012] Furthermore, the outlet of the gas storage tank is connected to an oil removal filter via a gas guide pipe.
[0013] By adopting the above technical solution, oil droplets in compressed air can be effectively removed.
[0014] Furthermore, the outlet of the oil removal filter is connected to a dryer via an air guide pipe.
[0015] By adopting the above technical solution, compressed air can be effectively dried.
[0016] Furthermore, the outlet of the dryer is connected to a water removal filter via an air guide pipe, and the outlet of the water removal filter is connected to a dust removal filter via an air guide pipe.
[0017] By adopting the above technical solution, water vapor and dust in compressed air can be effectively removed.
[0018] In summary, the beneficial technical effects of this utility model are as follows:
[0019] 1. This utility model utilizes a first air compressor to supply air to the internal air tank during use, while a pressure sensor monitors the internal air pressure in real time. After amplification by the circuit amplification module and conversion by the ADC conversion module, the pressure value can be effectively read by the PLC controller. When the internal air pressure of the air tank is between 0.60 and 0.80 MPa, the first air compressor operates normally. When the internal air pressure of the air tank is lower than 0.50 MPa, the PLC controller controls the second relay to close the working circuit of the second air compressor and the corresponding solenoid valve. The second air compressor starts to supply air to the internal air tank together with the first air compressor. When the pressure of the air tank exceeds 0.8 MPa, the PLC controller closes the working circuit of the second air compressor 2 through the second relay. When the internal air pressure of the air tank exceeds 1 MPa, the PLC controller controls the first and second air compressors to shut down. Throughout the air supply process, self-regulation operation can be achieved, ensuring overall working stability.
[0020] 2. This utility model has a simple structure and a firm and reliable connection;
[0021] 3. By sequentially installing an oil removal filter, a dryer, a water removal filter, and a dust removal filter in the air supply pipeline, this utility model can perform oil removal, drying, water removal, and dust removal operations during the delivery of compressed air, thereby effectively improving the working efficiency of carbon dioxide oil displacement. Attached Figure Description
[0022] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model;
[0023] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model;
[0024] Figure 3 This utility model Figure 2 Enlarged view of point A.
[0025] In the diagram: 1. First air compressor; 2. Second air compressor; 3. Electrical cabinet; 4. Air duct; 5. Air tank; 6. Pressure sensor; 7. PLC controller; 8. Circuit amplifier module; 9. Oil removal filter; 10. Dryer; 11. Water removal filter; 12. Dust removal filter; 13. Solenoid valve. Detailed Implementation
[0026] The method of this utility model will be further described in detail below with reference to the accompanying drawings.
[0027] Reference Figure 1 , Figure 2 , Figure 3The compressed air device for carbon dioxide-driven oil extraction includes a first air compressor 1 and a second air compressor 2. An air storage tank 5 is located on one side of both the first and second air compressors 1 and 2. Air guide pipes 4 are installed at the outlet ends of both the first and second air compressors 1 and 2, with the other end of the air guide pipes 4 connected to the inlet end of the air storage tank 5. Solenoid valves 13 are installed near the outlet ports of both the first and second air compressors 1 and 2. An electrical cabinet 3 is located on one side of both the first and second air compressors 1 and 2. Inside the electrical cabinet 3 are a PLC controller 7, a first relay, and a second relay. The PLC controller 7 is electrically connected to the control terminals of the first and second relays, respectively. The first relay is electrically connected to the first air compressor 1, and the second relay is electrically connected to the second air compressor 2. A mounting hole is provided on the side surface of the air storage tank 5, and a pressure sensor 6 (WF5805F) is installed inside the mounting hole. A circuit amplification module 8 is installed on the side surface of the air storage tank 5, and the pressure sensor 6 is electrically connected to the circuit amplification module 8. An ADC conversion module is inserted into the slot of the PLC controller 7. The circuit amplification module 8 is electrically connected to the ADC conversion module. During operation, the first air compressor 1 supplies air to the internal air tank 5, while the pressure sensor 6 monitors the internal pressure of the air tank 5 in real time. After amplification by the circuit amplification module 8 and conversion by the ADC conversion module, the pressure value can be effectively read by the PLC controller 7. When the internal pressure of the air tank 5 is between 0.60 and 0.80 MPa, the first air compressor 1 operates normally. When the internal pressure of the air tank 5 is below 0.50 MPa, the PLC controller 7 controls the second relay to close the working circuit of the second air compressor 2 and the corresponding solenoid valve 13. The second air compressor 2 then begins to supply air to the internal air tank 5 together with the first air compressor 1. When the pressure of the air tank 5 exceeds 0.8 MPa, the PLC controller 7 closes the working circuit of the second air compressor 2 through the second relay. When the internal pressure of the air tank 5 exceeds 1 MPa, the PLC controller 7 controls the first air compressor 1 and the second air compressor 2 to shut down. Throughout the air supply process, self-regulation is achieved, ensuring overall operational stability.
[0028] Reference Figure 1 The outlet of the air tank 5 is connected to an oil removal filter 9 via an air guide pipe 4. The outlet of the oil removal filter 9 is connected to a dryer 10 via an air guide pipe 4. The outlet of the dryer 10 is connected to a water removal filter 11 via an air guide pipe 4. The outlet of the water removal filter 11 is connected to a dust removal filter 12 via an air guide pipe 4. By sequentially installing the oil removal filter 9, dryer 10, water removal filter 11, and dust removal filter 12 in the air supply pipeline, oil removal, drying, water removal, and dust removal operations can be performed during the delivery of compressed air, thereby effectively improving the working efficiency of carbon dioxide oil displacement.
[0029] Working Principle: In use, the device is first installed in the designated location. During air supply, the first air compressor 1 supplies air to the internal air tank 5. Simultaneously, the air pressure sensor 6 monitors the internal air pressure of the air tank 5 in real time. After amplification by the circuit amplification module 8 and conversion by the ADC conversion module, the pressure value can be effectively read by the PLC controller 7. When the internal air pressure of the air tank 5 is between 0.60 and 0.80 MPa, the first air compressor 1 operates normally. When the internal air pressure of the air tank 5 is below 0.50 MPa, the PLC controller 7 controls the second relay to close the working circuit of the second air compressor 2 and the corresponding solenoid valve 13. Air compressor 2, together with the first air compressor 1, supplies air to the interior of air tank 5. When the pressure in air tank 5 exceeds 0.8 MPa, PLC controller 7 closes the working circuit of the second air compressor 2 through the second relay. When the air pressure inside air tank 5 exceeds 1 MPa, PLC controller 7 controls the first air compressor 1 and the second air compressor 2 to shut down. Throughout the air supply process, self-regulating operation can be achieved. Since the oil removal filter 9, dryer 10, water removal filter 11, and dust removal filter 12 are installed in sequence in the air supply pipeline, oil removal, drying, water removal, and dust removal operations can be performed during the delivery of compressed air, thereby effectively improving the working efficiency of carbon dioxide oil displacement.
[0030] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A compressed air device for carbon dioxide-driven oil extraction, comprising a first air compressor (1) and a second air compressor (2), characterized in that: An air storage tank (5) is provided on one side of the first air compressor (1) and the second air compressor (2). An air guide pipe (4) is installed at the outlet end of the first air compressor (1) and the second air compressor (2), and the other end of the air guide pipe (4) is connected to the inlet end of the air storage tank (5). A solenoid valve (13) is installed near the outlet port of the first air compressor (1) and the second air compressor (2).
2. The carbon dioxide driven compressed air device of claim 1, wherein: An electrical cabinet (3) is provided on one side of the first air compressor (1) and the second air compressor (2). The electrical cabinet (3) is equipped with a PLC controller (7), a first relay, and a second relay. The PLC controller (7) is electrically connected to the control terminals of the first relay and the second relay, respectively. The first relay is electrically connected to the first air compressor (1), and the second relay is electrically connected to the second air compressor (2).
3. The carbon dioxide driven compressed air device of claim 2, wherein: The gas storage tank (5) has a mounting hole on its side surface, and a pressure sensor (6) is installed inside the mounting hole. A circuit amplification module (8) is installed on the side surface of the gas storage tank (5). The pressure sensor (6) is electrically connected to the circuit amplification module (8). An ADC conversion module is installed in the slot of the PLC controller (7). The circuit amplification module (8) is electrically connected to the ADC conversion module.
4. The carbon dioxide-fueled compressed air device of claim 1, wherein: The outlet of the gas storage tank (5) is connected to an oil removal filter (9) via a gas guide pipe (4).
5. The carbon dioxide driven compressed air device of claim 4, wherein: The outlet of the oil filter (9) is connected to a dryer (10) via an air guide pipe (4).
6. The carbon dioxide driven compressed air device of claim 5, wherein: The outlet of the dryer (10) is connected to a water removal filter (11) via an air guide pipe (4), and the outlet of the water removal filter (11) is connected to a dust removal filter (12) via an air guide pipe (4).