Simulation device for carbon dioxide circulation oil displacement
By designing a carbon dioxide cycle oil-driving simulation device including a starter assembly, a pressure supply assembly and a visual medium separator, the problem that the prior art cannot realize carbon dioxide recycling is solved, and the cycle driving of CO2 and the effective oil phase substances are realized. Replacement meets the experimental needs.
Patent Information
- Application Number
- CN202421170629.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing simulation devices cannot realize the recycling of carbon dioxide and cannot meet the needs of carbon dioxide cycle oil-damaging simulation experiments.
A carbon dioxide cycle oil-driving simulation device including a starter assembly, a pressure supply assembly, a piston cylinder, a material box and a visual medium separator is designed to realize the recycling of CO2 through a circulation pump and a back pressure valve, combined with micro Raman imaging The spectrometer and visual medium separator perform fluid dynamic detection and material removal to form a closed loop channel to achieve cyclic drive of CO2.
The device is compact in structure and ingenious in design, which is particularly suitable for carbon dioxide cycle oil flooding experiments, meets experimental needs, and realizes the recycling of CO2 and the effective displacement of oil phase substances.
Smart Images
Figure CN222184742U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a simulation device for circulating oil recovery by carbon dioxide, belonging to the technical field of simulation equipment for circulating oil recovery. Background Art
[0002] In the field of oil exploration and development, with the increasing number of depleted oil reservoirs / deep saline layers, in order to increase the oil and gas exploration volume of depleted oil reservoirs / deep saline layers. At present, a method of using CO2 to drive to increase oil and gas production in oil reservoirs has been proposed. In order to verify the feasibility of this method, a simulation device is often used to simulate the process of CO2 oil and gas displacement; existing simulation equipment such as the carbon dioxide geological storage and coal reservoir methane production increase simulation system and method published in the invention patent application with application publication number CN117420043A, although it can also simulate the experimental process of carbon dioxide displacement and production increase, its CO2 cannot be recycled, and its existence cannot meet the use needs of carbon dioxide circulation oil displacement simulation experiments. Therefore, it is necessary to develop a new simulation device to solve the above problems of existing simulation devices. Summary of the invention
[0003] The utility model aims to provide a carbon dioxide circulation oil recovery simulation device capable of carrying out a carbon dioxide circulation oil recovery experiment.
[0004] The technical solution of the utility model is:
[0005] A simulation device for carbon dioxide circulation flooding, comprising a starting component, a pressure supply component, a piston cylinder A, a piston cylinder B, a material box and a visual medium separator; characterized in that: one side of the material box is connected to the starting component through an input pipeline; a control valve A and a control valve B are connected in parallel on the input pipeline; one end of the control valve A is connected to the piston cylinder A; one end of the control valve B is connected to the piston cylinder B; one end of the piston cylinder A and one end of the piston cylinder B are connected to the pressure supply component; the other side of the material box is connected to a microscopic Raman imaging spectrometer and a visual medium separator in sequence through an output pipeline; one end of the visual medium separator is connected in parallel to a circulation pipeline A and a circulation pipeline B; the circulation pipeline A is connected to one end of the control valve A; and the circulation pipeline B is connected to one end of the control valve B.
[0006] The starting assembly comprises an oil phase piston cylinder, a water phase piston cylinder, a gas phase piston cylinder, an injection and pressure pipeline, an injection and pressure valve and a delivery valve; the input pipeline is equipped with an injection valve and an input valve; the input pipeline between the injection valve and the input valve is connected in parallel with the oil phase piston cylinder, the water phase piston cylinder and the gas phase piston cylinder through the delivery valve; the input ends of the oil phase piston cylinder, the water phase piston cylinder and the gas phase piston cylinder are connected with the injection and pressure pipeline through the injection and pressure valve.
[0007] The pressure supply component includes a circulating pump A, a circulating pump B, a circulating water tank, a back pressure valve, an injection pressure valve A, a liquid return valve A, an injection pressure valve B and a liquid return valve B; the input end of the piston cylinder A is connected in parallel with the injection pressure valve A and the liquid return valve A; the input end of the piston cylinder B is connected in parallel with the injection pressure valve B and the liquid return valve B; the injection pressure valve A and the injection pressure valve B are connected to the circulating water tank through the circulating pump A; the liquid return valve A and the liquid return valve B are connected to the back pressure valve; one end of the back pressure valve is connected to the circulating pump B, and the other end is connected to the circulating water tank.
[0008] A transparent observation window is arranged at the upper end of the material box; a dome light source is arranged above the transparent observation window.
[0009] The circulating pipeline A is sequentially connected with a dehydration adsorber, a storage bottle and a vacuum pump via a cleaning valve.
[0010] The advantages of the utility model are:
[0011] The simulation device for carbon dioxide circulation oil recovery has a compact structure and ingenious design. It is particularly suitable for carbon dioxide circulation oil recovery experiments and meets experimental requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the structure of the startup component;
[0014] Figure 3 It is a structural schematic diagram of the pressure supply component;
[0015] Figure 4 The working diagram when the piston cylinder A is pressurized;
[0016] Figure 5 The working diagram when the piston cylinder B is pressurized;
[0017] In the figure: 1. material box; 2. input pipeline; 3. starting component; 4. control valve A; 5. control valve B; 6. piston cylinder A; 7. piston cylinder B; 8. pressure supply component; 9. output pipeline; 10. micro-Raman imaging spectrometer; 11. visual medium separator; 12. vacuum pump; 13. circulation pipeline A; 14. circulation pipeline B; 15. injection valve; 16. input valve; 17. delivery valve; 18. oil phase piston cylinder; 19. water phase piston cylinder; 20. gas phase piston cylinder; 21. pump pressure valve; 22. injection and pressure pipeline; 23. injection and pressure valve A; 24. return liquid valve A; 25. injection and pressure valve B; 26. return liquid valve B; 27. circulation pump A; 28. circulation water tank; 29. back pressure valve; 30. circulation pump B; 31. dehydration adsorber; 32. storage bottle; 33. circulation valve. DETAILED DESCRIPTION
[0018] The simulation device of carbon dioxide cycle flooding includes a starting component 3, a pressure supply component 8, a piston cylinder A6, a piston cylinder B7, a material box 1 and a visual medium separator 11 (see the attached manual). Figure 1 ).
[0019] A transparent observation window is provided at the upper end of the material box 1; a dome light source is provided above the transparent observation window. The material box 1 has an electric heating function. During operation, the simulated filler can be placed inside the material box 1 and compacted, and then the evolution process of CO2 displacing the oil phase material or the water phase material can be observed through the transparent observation window.
[0020] One side of the material box 1 is connected to a starting assembly 3 through an input pipeline 2 (see the appendix of the manual). Figure 1 The start-up assembly 3 includes an oil phase piston cylinder 18, a water phase piston cylinder 19, a gas phase piston cylinder 20, an injection pressure pipeline 22, a pump pressure valve 21 and a delivery valve 17 (see the attached manual). Figure 2 ).
[0021] The input pipeline 2 is equipped with an injection valve 15 and an input valve 16; the input pipeline 2 between the injection valve 15 and the input valve 16 is connected in parallel with an oil phase piston cylinder 18, a water phase piston cylinder 19 and a gas phase piston cylinder 20 through a delivery valve 17; the input ends of the oil phase piston cylinder 18, the water phase piston cylinder 19 and the gas phase piston cylinder 20 are connected to an injection pressure pipeline 22 through a pump pressure valve 21 (see the appendix of the specification). Figure 2 ).
[0022] During operation, oil phase substances, water phase substances and gas phase substances (i.e., carbon dioxide) can be input into the corresponding oil phase piston cylinder 18, water phase piston cylinder 19 and the upper part of the gas phase piston cylinder 20 through the input pipeline 2, the injection valve 15 and the corresponding delivery valve 17; when the injection and pressure pipeline 22 is working, it can provide pressure to each corresponding oil phase piston cylinder 18, water phase piston cylinder 19 and gas phase piston cylinder 20 through the pump pressure valve 21, thereby achieving the purpose of outputting oil phase substances through the oil phase piston cylinder 18, outputting water phase substances through the water phase piston cylinder 19 and outputting carbon dioxide through the gas phase piston cylinder 20.
[0023] The input pipeline 2 is connected in parallel with a control valve A4 and a control valve B5; one end of the control valve A4 is connected to a piston cylinder A6; one end of the control valve B5 is connected to a piston cylinder B7; one end of the piston cylinder A6 and one end of the piston cylinder B7 are connected to a pressure supply assembly 8 (see the appendix of the manual). Figure 1 ). The pressure supply assembly 8 can provide operating pressure for the piston cylinder A6 and the piston cylinder B7.
[0024] The pressure supply assembly 8 includes a circulation pump A27, a circulation pump B30, a circulation water tank 28, a back pressure valve 29, a pressure injection valve A23, a liquid return valve A24, a pressure injection valve B25 and a liquid return valve B26 (see the attached manual). Figure 3 ).
[0025] The input end of the piston cylinder A6 is connected in parallel with the pressure injection valve A23 and the liquid return valve A24; the input end of the piston cylinder B7 is connected in parallel with the pressure injection valve B25 and the liquid return valve B26; the pressure injection valve A23 and the pressure injection valve B25 are connected to the circulating water tank 28 through the circulating pump A27; the liquid return valve A24 and the liquid return valve B26 are connected to the back pressure valve 29; one end of the back pressure valve 29 is connected to the circulating pump B30, and the other end is connected to the circulating water tank 28.
[0026] During operation, the injection valve A23, the return valve A24, the injection valve B25 and the return valve B2 can be switched to make the piston cylinder A6 discharge CO2 while the piston cylinder B7 collects CO2 (see the attached manual). Figure 4 ); or when piston cylinder B7 discharges CO2, piston cylinder A6 collects CO2.
[0027] The other side of the material box 1 is connected in sequence with a micro-Raman imaging spectrometer 10 and a visual medium separator 11 through an output pipeline 9; the micro-Raman imaging spectrometer 10 and the visual medium separator 11 are both purchased equipment; during operation, the mixed substance discharged through the material box 1 can be subjected to fluid dynamic detection by the micro-Raman imaging spectrometer 10, and other substances in the mixed substance can be removed by the visual medium separator 11, so that CO2 can smoothly enter the circulation pipeline A13 and the circulation pipeline B14 during operation.
[0028] One end of the visible medium separator 11 is connected in parallel with a circulation pipeline A13 and a circulation pipeline B14; the circulation pipeline A13 is connected to one end of the control valve A4 through a circulation valve 33; the circulation pipeline B14 is connected to one end of the control valve B5 through a circulation valve 33 (see the appendix of the manual). Figure 1 ).
[0029] The circulation pipeline A13 is connected in sequence to a dehydration adsorber 31, a storage bottle 32 and a vacuum pump 12 through a cleaning valve (see the attached manual). Figure 1 The purpose of setting the dehydration adsorber 31, the storage bottle 32 and the vacuum pump 12 is to make the interior of the simulation device in a vacuum state by turning on the vacuum pump 12 before working, thereby avoiding the problem of affecting the accuracy of the experiment when the circuit is filled with air.
[0030] When the simulation device of carbon dioxide recycling flooding is working, firstly, the simulated filling material is compacted and filled in the material box 1, then the injection valve 15 and the valve on the pressure supply assembly 8 are closed, and then other valves are opened, so that a closed passage is formed inside the pipeline of the simulation device. Then, the vacuum pump 12 is turned on to put the interior of the simulation device into a vacuum state.
[0031] After the above steps are completed, the injection valve 15 on the start-up assembly 3 is opened, and then the oil phase material, the water phase material and the gas phase material (i.e., carbon dioxide) are input into the corresponding oil phase piston cylinder 18, the water phase piston cylinder 19 and the upper part of the gas phase piston cylinder 20 through the input pipeline 2, the injection valve 15 and the corresponding delivery valve 17, and then the injection valve 15 and the delivery valve 17 are closed (see the attached manual). Figure 2 ).
[0032] After the corresponding substances are injected into the oil phase piston cylinder 18, the water phase piston cylinder 19 and the gas phase piston cylinder 20, the input valve 16 and the delivery valve 17 and the pump pressure valve 21 connected to the oil phase piston cylinder 18 are opened. Then, the oil phase piston cylinder 18 is pressurized through the injection and pressure pipeline 22, so that the oil phase substance enters the material box 1 with a certain pressure and infiltrates the simulated filling. After a period of time, the input valve 16 and the delivery valve 17 and the pump pressure valve 21 connected to the oil phase piston cylinder 18 are closed.
[0033] After the oil phase material infiltrates the simulated filler, the delivery valve 17 and the pump pressure valve 21 connected to the gas phase piston cylinder 20 are opened; the circulation valve 33 of the circulation pipeline A13 is opened; and then the gas phase piston cylinder 20 is pressurized through the injection pressure pipeline 22, so that the gas phase piston cylinder 20 pushes the gas phase material (i.e., carbon dioxide) through the microscopic Raman imaging spectrometer 10, the visible medium separator 11 and the circulation pipeline A13 in turn and then enters the piston cylinder A6.
[0034] In the above process, the gas phase substance (i.e., carbon dioxide) can displace the oil phase substance in the simulated filler to form a mixed substance, which is then subjected to fluid dynamics detection by a micro Raman imaging spectrometer 10 and other substances in the mixed substance are removed by a visual medium separator 11, so that CO2 can smoothly enter the piston cylinder A6.
[0035] When all CO2 enters the piston cylinder A6, close the input valve 16 and the circulation valve 33 on the circulation pipeline A13, and open the control valve A4 and the circulation valve 33 on the circulation pipeline B14; in this way, the piston cylinder A6, the material box 1, the micro-Raman imaging spectrometer 10, the visual medium separator 11, the circulation pipeline B14 and the piston cylinder B7 form a closed loop channel (see the attached manual Figure 4 ).
[0036] After the above work is completed, the injection valve A23 and the return valve B26 on the pressure supply assembly 8 are opened, so that the circulation pump A27 can provide the piston cylinder A6 with the operating pressure, and the piston cylinder B7 can be provided with a certain back pressure through the back pressure valve 29 and the circulation pump B30. The circulating water discharged by the piston cylinder B7 in the return stroke will enter the circulating water tank 28 through the back pressure valve 29. In this way, the gas phase material (i.e., carbon dioxide) discharged by the piston cylinder A6 can enter the piston cylinder B7 through the material box 1, the micro-Raman imaging spectrometer 10, the visual medium separator 11, and the circulation pipeline B14.
[0037] When all the gaseous substances (i.e., carbon dioxide) enter the piston cylinder B7, close the control valve A4 and the circulation valve 33 on the circulation pipeline B14; open the control valve B5 and the circulation valve 33 on the circulation pipeline A13; thus, the piston cylinder B7 material box 1, the micro-Raman imaging spectrometer 10, the visual medium separator 11, the circulation pipeline A13 and the piston cylinder A6 form a closed loop channel (see the attached manual). Figure 5 ).
[0038] After the above work is completed, close the injection valve A23 and the liquid return valve B26 on the pressure supply assembly 8, open the injection valve B25 and the liquid return valve A24, so that the circulation pump A27 can provide the piston cylinder B7 with the operating pressure, and provide a certain back pressure for the piston cylinder A6 through the back pressure valve 29 and the circulation pump B30. The circulating water discharged from the return stroke of the piston cylinder A6 will enter the circulating water tank 28 through the back pressure valve 29. In this way, the gas phase material (i.e., carbon dioxide) discharged from the piston cylinder B7 can enter the piston cylinder A6 through the material box 1, the micro-Raman imaging spectrometer 10, the visual medium separator 11, and the circulation pipeline B14.
[0039] In this way, the piston cylinder A6 and the piston cylinder B7 can alternately drive the gas phase material (i.e., carbon dioxide) into the material box 1 to displace the oil phase material in the simulated filler. During this process, the micro Raman imaging spectrometer 10 performs fluid dynamic detection and the visual medium separator 11 removes other substances in the mixed material. In this way, the simulation device can complete the displacement experiment of the oil phase material. After the simulation device completes the displacement experiment of the oil phase material, the water phase piston cylinder 19 can be replaced with the oil phase piston cylinder 18 and the above steps can be repeated to complete the displacement experiment of the water phase material.
[0040] The simulation device for carbon dioxide circulation oil recovery has a compact structure and ingenious design. It is particularly suitable for carbon dioxide circulation oil recovery experiments and meets experimental requirements.
Claims
1. A simulation device for carbon dioxide cyclic flooding, comprising a starting component (3), a pressure supply component (8), a piston cylinder A (6), a piston cylinder B (7), a material box (1) and a visual medium separator (11); characterized in that: One side of the material box (1) is connected to a starter assembly (3) via an input pipeline (2); a control valve A (4) and a control valve B (5) are connected in parallel to the input pipeline (2); one end of the control valve A (4) is connected to a piston cylinder A (6); one end of the control valve B (5) is connected to a piston cylinder B (7); one end of the piston cylinder A (6) and one end of the piston cylinder B (7) are connected to a pressure supply assembly (8); the other side of the material box (1) is connected to a micro Raman imaging spectrometer (10) and a visible medium separator (11) in sequence via an output pipeline (9); one end of the visible medium separator (11) is connected in parallel to a circulation pipeline A (13) and a circulation pipeline B (14); the circulation pipeline A (13) is connected to one end of the control valve A (4) via a circulation valve (33); and the circulation pipeline B (14) is connected to one end of the control valve B (5) via a circulation valve (33).
2. A simulation device for carbon dioxide cycle flooding according to claim 1, characterized in that: The starting assembly (3) comprises an oil phase piston cylinder (18), a water phase piston cylinder (19), a gas phase piston cylinder (20), an injection and pressure pipeline (22), a pump pressure valve (21) and a delivery valve (17); the input pipeline (2) is provided with an injection valve (15) and an input valve (16); the input pipeline (2) between the injection valve (15) and the input valve (16) is connected in parallel with the oil phase piston cylinder (18), the water phase piston cylinder (19) and the gas phase piston cylinder (20) via the delivery valve (17); the input ends of the oil phase piston cylinder (18), the water phase piston cylinder (19) and the gas phase piston cylinder (20) are connected with the injection and pressure pipeline (22) via the pump pressure valve (21).
3. A simulation device for carbon dioxide cycle flooding according to claim 1, characterized in that: The pressure supply assembly (8) comprises a circulation pump A (27), a circulation pump B (30), a circulation water tank (28), a back pressure valve (29), an injection pressure valve A (23), a liquid return valve A (24), an injection pressure valve B (25) and a liquid return valve B (26); the input end of the piston cylinder A (6) is connected in parallel with the injection pressure valve A (23) and the liquid return valve A (24); the input end of the piston cylinder B (7) is connected in parallel with the injection pressure valve B (25) and the liquid return valve B (26); the injection pressure valve A (23) and the injection pressure valve B (25) are connected to the circulation water tank (28) via the circulation pump A (27); the liquid return valve A (24) and the liquid return valve B (26) are connected to the back pressure valve (29); one end of the back pressure valve (29) is connected to the circulation pump B (30), and the other end is connected to the circulation water tank (28).
4. A simulation device for carbon dioxide cycle flooding according to claim 1, characterized in that: A transparent observation window is arranged at the upper end of the material box (1); a dome light source is arranged above the transparent observation window.
5. A simulation device for carbon dioxide cycle flooding according to claim 1, characterized in that: The circulation pipeline A (13) is connected in sequence to a dehydration adsorber (31), a storage bottle (32) and a vacuum pump (12) via a cleaning valve.