CN220749822U - Carbon dioxide cooling and storing system - Google Patents
Carbon dioxide cooling and storing system Download PDFInfo
- Publication number
- CN220749822U CN220749822U CN202322476012.9U CN202322476012U CN220749822U CN 220749822 U CN220749822 U CN 220749822U CN 202322476012 U CN202322476012 U CN 202322476012U CN 220749822 U CN220749822 U CN 220749822U
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- Prior art keywords
- carbon dioxide
- pipe
- cooling
- air
- shunt
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 103
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 103
- 238000001816 cooling Methods 0.000 title claims abstract description 77
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 description 12
- 239000003921 oil Substances 0.000 description 7
- 239000010779 crude oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Abstract
The utility model discloses a carbon dioxide cooling and storing system, relates to the technical field of carbon dioxide oil displacement, and solves the problem that the cooling operation of the carbon dioxide is complex in the places with water shortage and high temperature in the prior art; the high-pressure carbon dioxide gas-liquid separator comprises a high-pressure carbon dioxide gas inlet pipe, wherein one end of the high-pressure carbon dioxide gas inlet pipe is communicated with a pipeline for conveying high-pressure carbon dioxide, the other end of the high-pressure carbon dioxide gas inlet pipe is respectively communicated with an air cooling pipe and a first shunt pipe, the other end of the air cooling pipe is communicated with the other end of the first shunt pipe, the air cooling pipe and the first shunt pipe form a first loop, the air cooling pipe passes through an air cooler, a first electromagnetic valve is arranged on the air cooling pipe between the air cooling pipe and the high-pressure carbon dioxide gas inlet pipe, and a second electromagnetic valve is arranged on the first shunt pipe; according to the utility model, the air cooler and the air cooling water chiller are connected in series, so that carbon dioxide with different cooling requirements can be cooled, and the water chiller can be short-circuited when the water chiller is independently operated in winter, so that the resistance loss along the way is reduced.
Description
Technical Field
The utility model relates to the technical field of carbon dioxide oil displacement, in particular to a carbon dioxide cooling and storing system.
Background
Carbon dioxide flooding is a technique of injecting carbon dioxide into an oil layer to increase oil recovery in an oil field, wherein a miscible phase is not formed when the carbon dioxide is first contacted with crude oil in a stratum, but the carbon dioxide can form a miscible phase front under the conditions of proper pressure, temperature and crude oil components. Supercritical fluids will extract heavier hydrocarbons from crude oil and continue to concentrate the gas displacing the front. Thus, the carbon dioxide and crude oil become miscible liquids, forming a single liquid phase, whereby the formation crude oil can be effectively displaced to the production well.
When carbon dioxide is used for oil displacement, firstly, carbon dioxide gas is required to be pressurized and conveyed to an oil well for cooling, then is injected into the oil well through a plunger pump for oil displacement, and the pressure loss of the carbon dioxide is required to be reduced as much as possible in the transportation process, but most oil wells and carbon dioxide release units are not the same company. Even though the oil well and the carbon dioxide release unit are the same company, since a plurality of oil wells are located at different positions, carbon dioxide will cause a certain pressure loss during transportation, and in order to solve the above-mentioned problems, the pressurized liquid carbon dioxide is currently transported to each oil well by using a heat-preserving pipeline. Or cooling the carbon dioxide to minus 20 ℃ to liquefy, storing in a 50-cubic liquid storage tank, and transporting to an oil well.
However, the initial parameter of carbon dioxide is 50 ℃ and the pressure is 6 mpa, and the temperature needs to be reduced to 20 ℃ to liquefy the carbon dioxide during oil displacement, so that in order to achieve the required parameter and reduce the pressure loss, a heat-preserving pipeline is currently used for conveying pressurized liquid carbon dioxide to each oil well, or cooling the carbon dioxide to minus 20 ℃ to liquefy the carbon dioxide, storing the carbon dioxide in a 50-cubic liquid storage tank and conveying the carbon dioxide to the oil well. The storage tank is used for conveying, and the temperature of carbon dioxide in the tank is lower, so that the cooling temperature is not required to be very low when the carbon dioxide reaches an oil well; the pipeline is used for conveying, the pressure in the pipeline is larger, and the temperature of carbon dioxide in the pipeline is higher, so that a lower cooling temperature is required when the pipeline reaches an oil well to cool the pipeline.
The existing cooling modes comprise three cooling modes of evaporation cooling, air cooling and air cooling, but as in the county of the wheel and the county of Xinjiang, no flowing water source exists near the oil well, and only water can be taken from a distance for temporary use, so that the method of evaporation cooling is not adopted, and only air cooling or air cooling can be adopted. However, the limit high temperature of the Qingjia county is 40 ℃, and the cooling efficiency of the air cooler is affected, so that the cooling operation of carbon dioxide is complex for places with water shortage and high temperature.
Disclosure of Invention
The utility model aims at: the carbon dioxide cooling and storing system is used for solving the problem that in the prior art, the cooling operation of carbon dioxide is complex in places which are lack of water and have high temperature.
The technical scheme adopted by the utility model is as follows: the carbon dioxide cooling and storing system comprises a high-pressure carbon dioxide inlet pipe, wherein one end of the high-pressure carbon dioxide inlet pipe is communicated with a pipeline for conveying high-pressure carbon dioxide, the other end of the high-pressure carbon dioxide inlet pipe is respectively communicated with an air cooling pipe and a first shunt pipe, the other end of the air cooling pipe is communicated with the other end of the first shunt pipe, the air cooling pipe and the first shunt pipe form a first loop, the air cooling pipe passes through an air cooler, a first electromagnetic valve is arranged on the air cooling pipe between the air cooling pipe and the high-pressure carbon dioxide inlet pipe, a second electromagnetic valve is arranged on the first shunt pipe, and an air cooler outlet temperature sensor is arranged after the air cooling pipe passes through the air cooler;
one end of the storage tank carbon dioxide inlet pipe is communicated with a storage tank for containing carbon dioxide, the other end of the storage tank carbon dioxide inlet pipe is respectively communicated with a liquid cooling pipe and a second shunt pipe, the other end of the liquid cooling pipe is communicated with the other end of the second shunt pipe, the liquid cooling pipe and the second shunt pipe form a second loop, the second shunt pipe passes through a carbon dioxide heat exchanger, a carbon dioxide heat exchanger outlet temperature sensor is arranged at one end, close to the storage tank carbon dioxide inlet pipe, of the second shunt pipe, a fourth electromagnetic valve is arranged after the second shunt pipe passes through the carbon dioxide heat exchanger, a third electromagnetic valve is arranged on the liquid cooling pipe, and the first loop and the second loop are communicated through an intermediate pipe;
the air-cooled water chiller is communicated with the carbon dioxide heat exchanger through a liquid-cooled heat exchange tube, the liquid-cooled heat exchange tube is communicated with the cooling water tank through a pipeline, and a circulating pump is arranged on the liquid-cooled heat exchange tube and is used for driving a medium in the cooling water tank to circularly flow between the air-cooled water chiller and the carbon dioxide heat exchanger;
wherein an ambient temperature sensor for detecting an ambient temperature is installed at an operation place of the cooling system.
Further, the medium contained in the cooling water tank is 60% glycol solution.
Further, a liquid level valve is arranged in the cooling water tank.
In conclusion, by adopting the technical scheme, the utility model has the beneficial effects that:
according to the utility model, the air cooler and the air cooling water chiller are connected in series, so that carbon dioxide with different cooling requirements can be cooled, and the water chiller can be short-circuited when the water chiller is independently operated in winter, so that the resistance loss along the way is reduced.
Description of the drawings:
fig. 1 is a schematic structural view of a first form of the present utility model.
Reference numerals illustrate:
1. an air cooler; 2. high pressure carbon dioxide inlet pipe; 3. an air-cooling pipe; 4. a first shunt; 5. a liquid-cooled tube; 6. preparing a second shunt pipe; 7. a carbon dioxide inlet pipe of the storage tank; 8. a carbon dioxide heat exchanger; 9. liquid cooling heat exchange tubes; 10. an air-cooled chiller unit; 11. a cooling water tank; 12 a first solenoid valve; 13. a second electromagnetic valve; 14. an air cooler outlet temperature sensor; 15. a third electromagnetic valve; 16. a fourth electromagnetic valve; 17. a carbon dioxide heat exchanger outlet temperature sensor; 18. an ambient temperature sensor; 19. a middle tube; 20. a liquid level valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Fig. 1 shows: a carbon dioxide cooling and storing system comprises a high-pressure carbon dioxide inlet pipe 2.
One end of the high-pressure carbon dioxide inlet pipe 2 is communicated with a pipeline for conveying high-pressure carbon dioxide, the other end of the high-pressure carbon dioxide inlet pipe is respectively communicated with the air cooling pipe 3 and the first split pipe 4, the other end of the air cooling pipe 3 is communicated with the other end of the first split pipe 4, the air cooling pipe 3 and the first split pipe 4 form a first loop, the air cooling pipe 3 passes through the air cooler 1, a first electromagnetic valve 12 is arranged on the air cooling pipe 3 between the air cooling pipe 3 and the high-pressure carbon dioxide inlet pipe 2, a second electromagnetic valve 13 is arranged on the first split pipe 4, and an air cooler outlet temperature sensor 14 is arranged on the air cooling pipe 3 after the air cooling pipe 3 passes through the air cooler 1;
one end of a storage tank carbon dioxide inlet pipe 7 is communicated with a storage tank for containing carbon dioxide, the other end of the storage tank carbon dioxide inlet pipe is respectively communicated with a liquid cooling pipe 5 and a second shunt pipe 6, the other end of the liquid cooling pipe 5 is communicated with the other end of the second shunt pipe 6, the liquid cooling pipe 5 and the second shunt pipe 6 form a second loop, the second shunt pipe 6 passes through a carbon dioxide heat exchanger 8, a carbon dioxide heat exchanger outlet temperature sensor 17 is arranged at one end, close to the storage tank carbon dioxide inlet pipe 7, of the second shunt pipe 6, a fourth electromagnetic valve 16 is arranged after the second shunt pipe 6 passes through the carbon dioxide heat exchanger 8, a third electromagnetic valve 15 is arranged on the liquid cooling pipe 5, and the first loop and the second loop are communicated through an intermediate pipe 19;
the air-cooled chiller 10 is communicated with the carbon dioxide heat exchanger 8 through a liquid-cooled heat exchange tube 9, the liquid-cooled heat exchange tube 9 is communicated with a cooling water tank 11 through a pipeline, and a circulating pump is arranged on the liquid-cooled heat exchange tube 9 and is used for driving a medium in the cooling water tank 11 to circularly flow between the air-cooled chiller 10 and the carbon dioxide heat exchanger 8;
wherein an ambient temperature sensor 18 for detecting the ambient temperature is mounted at the operation of the cooling system.
When the temperature detected by the ambient temperature sensor 18 is higher than 40 ℃ or the temperature detected by the air cooler outlet temperature sensor 14 is higher than 45 ℃, the cooling effect of the air cooler 1 is reduced, high-pressure carbon dioxide in a pipeline cannot be cooled, air cooling is needed, at the moment, the first electromagnetic valve 12 is closed, the second electromagnetic valve 13 is opened, the high-pressure carbon dioxide sequentially passes through the first shunt pipe 4, the middle pipe 19 and the second shunt pipe 6 to enter the carbon dioxide heat exchanger 8, a circulating pump drives a medium in the cooling water tank 11 to circularly flow between the air cooling water chilling unit 10 and the carbon dioxide heat exchanger 8, the medium cools the high-pressure carbon dioxide when reaching the carbon dioxide heat exchanger 8 in the flowing process, the medium cools the medium when reaching the air cooling water chilling unit 10, and at the moment, the carbon dioxide in the storage tank flows through the carbon dioxide heat exchanger 8 to be cooled;
when the temperature detected by the ambient temperature sensor 18 is less than 0 ℃ or the temperature detected by the air cooler outlet temperature sensor 14 is less than 15 ℃, the cooling effect of the air cooler 1 can meet the requirement, the air cooler 1 is not required to cool down the high-pressure carbon dioxide in the pipeline and the carbon dioxide in the storage tank, the air cooler 1 can cool down the high-pressure carbon dioxide, the third electromagnetic valve 15 is closed at the moment, the fourth electromagnetic valve 16 is opened, and the carbon dioxide in the storage tank sequentially enters the air cooler 1 through the fourth electromagnetic valve 16, the intermediate pipe 19 and the first electromagnetic valve 12 and is cooled down by the air cooler 1.
In order to avoid the freezing of the pipeline, the medium contained in the cooling water tank 11 is 60% glycol solution, which is used as the circulating medium of the air-cooled chiller 10, and a liquid level valve 20 is installed in the cooling water tank 11 and used for detecting the liquid level of the 60% glycol solution, so as to avoid the shortage of the medium, and the air-cooled chiller 10 cannot normally operate.
Claims (3)
1. The utility model provides a carbon dioxide cooling and storing system, its characterized in that includes high-pressure carbon dioxide intake pipe (2), high-pressure carbon dioxide intake pipe (2) one end and the pipeline intercommunication of carrying high-pressure carbon dioxide, the other end respectively with air cooling pipe (3) and first shunt tubes (4) intercommunication, the other end of air cooling pipe (3) with the other end intercommunication of first shunt tubes (4), air cooling pipe (3) and first shunt tubes (4) constitute first return circuit, air cooling pipe (3) are through air cooler (1), air cooling pipe (3) with install first solenoid valve (12) on air cooling pipe (3) between high-pressure carbon dioxide intake pipe (2), install second solenoid valve (13) on first shunt tubes (4), air cooling pipe (3) are installed air cooler export temperature sensor (14) after air cooler (1);
one end of a storage tank carbon dioxide inlet pipe (7) is communicated with a storage tank for containing carbon dioxide, the other end of the storage tank carbon dioxide inlet pipe is respectively communicated with a liquid cooling pipe (5) and a second shunt pipe (6), the other end of the liquid cooling pipe (5) is communicated with the other end of the second shunt pipe (6), the liquid cooling pipe (5) and the second shunt pipe (6) form a second loop, the second shunt pipe (6) passes through a carbon dioxide heat exchanger (8), a carbon dioxide heat exchanger outlet temperature sensor (17) is arranged at one end, close to the storage tank carbon dioxide inlet pipe (7), of the second shunt pipe (6), after passing through the carbon dioxide heat exchanger (8), a fourth electromagnetic valve (16) is arranged, a third electromagnetic valve (15) is arranged on the liquid cooling pipe (5), and the first loop and the second loop are communicated through an intermediate pipe (19);
the air-cooled water chiller (10) is communicated with the carbon dioxide heat exchanger (8) through a liquid-cooled heat exchange tube (9), the liquid-cooled heat exchange tube (9) is communicated with the cooling water tank (11) through a pipeline, and a circulating pump is arranged on the liquid-cooled heat exchange tube (9) and is used for driving a medium in the cooling water tank (11) to circularly flow between the air-cooled water chiller (10) and the carbon dioxide heat exchanger (8);
an ambient temperature sensor (18) for detecting the ambient temperature is mounted at the operating point of the cooling system.
2. A carbon dioxide cooling storage system according to claim 1, wherein: the medium contained in the cooling water tank (11) is 60% glycol solution.
3. A carbon dioxide cooling storage system according to claim 2, wherein: a liquid level valve (20) is arranged in the cooling water tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322476012.9U CN220749822U (en) | 2023-09-12 | 2023-09-12 | Carbon dioxide cooling and storing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322476012.9U CN220749822U (en) | 2023-09-12 | 2023-09-12 | Carbon dioxide cooling and storing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220749822U true CN220749822U (en) | 2024-04-09 |
Family
ID=90566373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322476012.9U Active CN220749822U (en) | 2023-09-12 | 2023-09-12 | Carbon dioxide cooling and storing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220749822U (en) |
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2023
- 2023-09-12 CN CN202322476012.9U patent/CN220749822U/en active Active
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