CN211692422U - Carbon dioxide injection huff and puff oil extraction ground device for oil field - Google Patents
Carbon dioxide injection huff and puff oil extraction ground device for oil field Download PDFInfo
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- CN211692422U CN211692422U CN202020235686.3U CN202020235686U CN211692422U CN 211692422 U CN211692422 U CN 211692422U CN 202020235686 U CN202020235686 U CN 202020235686U CN 211692422 U CN211692422 U CN 211692422U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The utility model belongs to the technical field of oil gas field development enhanced recovery ratio, a carbon dioxide oil recovery ground process flow and device of taking in and sending out is related to. A carbon dioxide injection huff and puff oil extraction ground device for an oil field comprises a carbon dioxide injection system, a blowout system and a reinjection system which are sequentially connected; the carbon dioxide injection system comprises a liquid carbon dioxide storage tank and an injection pump which are sequentially connected through an injection pipeline, and the injection pump is connected to the gas injection wellhead; the blowout system comprises a sampling valve and a gas-liquid separation tank which are sequentially connected through a blowout pipeline, a gas-liquid inlet is arranged on the side wall of the gas-liquid separation tank, a gas outlet is arranged at the upper part of the gas-liquid separation tank, and a liquid outlet is arranged at the bottom of the gas-liquid separation tank; the reinjection system comprises a reinjection pipeline, the inlet end of the reinjection pipeline is connected with a gas outlet, and the outlet end of the reinjection pipeline is connected to a gas injection wellhead; the reinjection pipeline is provided with a compressor. The utility model discloses process flow is simple, and it is convenient to implement.
Description
Technical Field
The utility model belongs to the technical field of oil gas field development enhanced recovery ratio, a carbon dioxide oil recovery ground process flow and device of taking in and sending out is related to.
Background
The carbon dioxide injection huff and puff oil recovery technology is a novel technology which is characterized in that a certain amount of carbon dioxide is injected into reservoir crude oil, the well is closed for a period of time, physical properties such as viscosity and density of the crude oil are changed after the crude oil is fully contacted with the carbon dioxide, and meanwhile, the flowing characteristic of fluid is improved, so that the recovery ratio of the crude oil is improved. Experiments at home and abroad show that the carbon dioxide huff-puff oil increasing mechanism mainly expands the volume of crude oil, reduces the viscosity of the crude oil, extracts and the like, has obvious effect on reducing the water content of the oil reservoir in the ultra-high water-containing stage at the later stage of exploitation, is one of effective methods for improving the ultimate recovery ratio of the oil reservoir, and is particularly suitable for improving the recovery ratio of a single well. The yield of crude oil increased by the carbon dioxide huff and puff enhanced recovery rate in the United states early accounts for 31 percent of the total yield of national enhanced recovery rate projects, and although the domestic carbon dioxide injection enhanced recovery rate technology starts late, a plurality of carbon dioxide huff and puff pilot experiments are successful.
At present, after carbon dioxide is infused and gas-injected and stewed, a well is opened and blowout is carried out, most of gas-liquid mixture enters a crude oil storage tank, most of carbon dioxide enters the atmosphere again after blowout, and the original intention of carbon dioxide capture, utilization and sequestration (CCUS) greenhouse gas emission reduction is violated. Therefore, it is necessary to develop and design a carbon dioxide huff and puff ground device to make the best effort to store the greenhouse gases permanently, so as to achieve the effect of reducing the emission and simultaneously improve the economic benefit.
Disclosure of Invention
The utility model aims at providing an oil field is annotated carbon dioxide and is taken in and send out oil recovery ground device.
The technical scheme of the utility model lies in:
a carbon dioxide injection huff and puff oil extraction ground device for an oil field comprises a carbon dioxide injection system, a blowout system and a reinjection system which are sequentially connected; the carbon dioxide injection system comprises a liquid carbon dioxide storage tank and an injection pump which are sequentially connected through an injection pipeline, and the injection pump is connected to the gas injection wellhead; the blowout system comprises a sampling valve and a gas-liquid separation tank which are sequentially connected through a blowout pipeline, a gas-liquid inlet is arranged on the side wall of the gas-liquid separation tank, a gas outlet is arranged at the upper part of the gas-liquid separation tank, and a liquid outlet is arranged at the bottom of the gas-liquid separation tank; the reinjection system comprises a reinjection pipeline, the inlet end of the reinjection pipeline is connected with a gas outlet, and the outlet end of the reinjection pipeline is connected to a gas injection wellhead; the reinjection pipeline is provided with a compressor.
And an electric heater is also arranged on the part of the injection pipeline between the injection pump and the gas injection wellhead.
And an expansion joint is further arranged on the part of the blow-off pipe line between the sampling valve and the gas-liquid separation tank.
And the reinjection pipeline is also provided with a flow transmitter and a pressure transmitter.
And the reinjection pipeline is also provided with a one-way valve and an electromagnetic valve.
The gas-liquid separation tank is internally provided with a screen, a gas-liquid inlet is positioned below the screen, and the gas-liquid inlet is connected with a blowout pipeline.
The top of the gas-liquid separation tank is also provided with a safety valve, and a liquid outlet is provided with a liquid discharge valve.
And an outlet valve is arranged at the joint of the liquid carbon dioxide storage tank and the injection pipeline.
The technical effects of the utility model reside in that:
1. the process flow is simple and the implementation is convenient;
2. the ejected carbon dioxide is separated and pressurized by the compressor and then injected back into the injection well mouth, so that the utilization rate of the carbon dioxide is improved, and the emission of greenhouse gases is reduced.
Drawings
Fig. 1 is the utility model discloses a carbon dioxide is annotated in oil field oil recovery ground device's of taking in and send out structure schematic diagram.
Reference numerals: the method comprises the following steps of 1-liquid carbon dioxide storage tank, 2-outlet valve, 3-injection pump, 4-electric heater, 5-gas injection well head, 6-sampling valve, 7-expansion joint, 8-gas-liquid separation tank, 9-liquid discharge valve, 10-screen, 11-safety valve, 12-flow transmitter, 13-pressure transmitter, 14-electromagnetic valve, 15-compressor and 16-one-way valve.
Detailed Description
Example 1
A carbon dioxide injection huff and puff oil extraction ground device for an oil field comprises a carbon dioxide injection system, a blowout system and a reinjection system which are sequentially connected; the carbon dioxide injection system comprises a liquid carbon dioxide storage tank 1 and an injection pump 3 which are sequentially connected through an injection pipeline, wherein the injection pump 3 is connected to a gas injection wellhead 5; the blowout system comprises a sampling valve 6 and a gas-liquid separation tank 8 which are sequentially connected through a blowout pipeline, a gas-liquid inlet is arranged on the side wall of the gas-liquid separation tank 8, a gas outlet is arranged at the upper part of the gas-liquid separation tank, and a liquid outlet is arranged at the bottom of the gas-liquid separation tank; the reinjection system comprises a reinjection pipeline, the inlet end of the reinjection pipeline is connected with a gas outlet, and the outlet end of the reinjection pipeline is connected to a gas injection wellhead 5; a compressor 15 is provided on the reinjection line.
The specific implementation process of the embodiment is as follows:
the low-temperature liquid carbon dioxide in the liquid carbon dioxide storage tank 1 is pressurized by an injection pump 3 and enters a gas injection wellhead 5; stopping injecting a certain amount of carbon dioxide into the stratum, and stewing for a period of time to open flow; opening the sampling valve 6, enabling a gas-liquid mixture in the gas injection wellhead 5 to enter a gas-liquid separation tank 8 along a blowout pipeline and a gas-liquid inlet, enabling the gas-liquid mixture to move upwards after entering the gas-liquid separation tank 8, enabling the gas to enter a reinjection pipeline through a gas outlet, and reinjecting the gas to the gas injection wellhead 5 through a compressor 15; the liquid settles down and is discharged through a liquid outlet at the bottom of the gas-liquid separation tank 8.
Example 2
On the basis of embodiment 1, the method further comprises the following steps:
an electric heater 4 is also arranged on the part of the injection pipeline between the injection pump 3 and the gas injection wellhead 5; before entering the gas injection wellhead 5, the low-temperature liquid carbon dioxide is heated by the electric heater 4, so that the cold damage of the low-temperature liquid carbon dioxide to the near-wellbore area is avoided.
Example 3
On the basis of embodiment 2, the method further comprises the following steps:
an expansion joint 7 is also arranged on the part of the blow-off pipe line between the sampling valve 6 and the gas-liquid separation tank 8; avoid the pressure is too big when preventing spouting, cause the severe vibration of blowout pipeline.
Example 4
On the basis of embodiment 3, the method further comprises the following steps:
and the reinjection pipeline is also provided with a flow transmitter 12 and a pressure transmitter 13. The refill line is also provided with a check valve 16 and an electromagnetic valve 14. The gas-liquid separation tank 8 is of a vertical cylinder structure, a screen 10 is arranged in the gas-liquid separation tank, a gas-liquid inlet is positioned below the screen 10, and the gas-liquid inlet is connected with a blowout pipeline. The top of the gas-liquid separation tank 8 is also provided with a safety valve 11, and a liquid outlet 9 is arranged at the liquid outlet. And an outlet valve 2 is arranged at the joint of the liquid carbon dioxide storage tank 1 and the injection pipeline.
The devices related to the utility model are all commercial products; wherein the injection pump model is 3RB45-1/20, the screen mesh aperture is less than or equal to 4.5mm, the flow transmitter model is JC-3000-L-FBHT, the pressure transmitter model is 316LSST, the electromagnetic valve model is ZBSF-16P, and the compressor model is 2 VW-17/0.01-65.
Claims (8)
1. A carbon dioxide injection huff and puff oil extraction ground device for an oil field comprises a carbon dioxide injection system, a blowout system and a reinjection system which are sequentially connected; the method is characterized in that: the carbon dioxide injection system comprises a liquid carbon dioxide storage tank (1) and an injection pump (3) which are sequentially connected through an injection pipeline, wherein the injection pump (3) is connected to the gas injection wellhead (5); the blowout system comprises a sampling valve (6) and a gas-liquid separation tank (8) which are sequentially connected through a blowout pipeline, a gas-liquid inlet is arranged on the side wall of the gas-liquid separation tank (8), a gas outlet is arranged at the upper part of the gas-liquid separation tank, and a liquid outlet is arranged at the bottom of the gas-liquid separation tank; the reinjection system comprises a reinjection pipeline, the inlet end of the reinjection pipeline is connected with a gas outlet, and the outlet end of the reinjection pipeline is connected to a gas injection wellhead (5); the reinjection pipeline is provided with a compressor (15).
2. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 1, wherein: an electric heater (4) is also arranged on the part of the injection pipeline between the injection pump (3) and the gas injection wellhead (5).
3. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 2, wherein: and an expansion joint (7) is also arranged on the part of the blow-off pipe line between the sampling valve (6) and the gas-liquid separation tank (8).
4. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 3, wherein: and the reinjection pipeline is also provided with a flow transmitter (12) and a pressure transmitter (13).
5. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 4, wherein: the reinjection pipeline is also provided with a one-way valve (16) and an electromagnetic valve (14).
6. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 5, wherein: the gas-liquid separation tank (8) is internally provided with a screen (10), a gas-liquid inlet is positioned below the screen (10), and the gas-liquid inlet is connected with a blowout pipeline.
7. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 6, wherein: the top of the gas-liquid separation tank (8) is also provided with a safety valve (11), and a liquid outlet is provided with a liquid discharge valve (9).
8. The carbon dioxide huff and puff oil recovery surface device for the oil field according to claim 7, wherein: and an outlet valve (2) is arranged at the joint of the liquid carbon dioxide storage tank (1) and the injection pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235686.3U CN211692422U (en) | 2020-03-02 | 2020-03-02 | Carbon dioxide injection huff and puff oil extraction ground device for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235686.3U CN211692422U (en) | 2020-03-02 | 2020-03-02 | Carbon dioxide injection huff and puff oil extraction ground device for oil field |
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| Publication Number | Publication Date |
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| CN211692422U true CN211692422U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020235686.3U Expired - Fee Related CN211692422U (en) | 2020-03-02 | 2020-03-02 | Carbon dioxide injection huff and puff oil extraction ground device for oil field |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360408A (en) * | 2020-12-03 | 2021-02-12 | 西南石油大学 | Novel method for improving recovery ratio of thickened oil by injecting carbon dioxide hot fluid |
| CN114059992A (en) * | 2021-10-27 | 2022-02-18 | 山东德仕石油装备有限公司 | Carbon dioxide injection huff and puff oil extraction ground device for oil field |
| CN114059977A (en) * | 2021-10-22 | 2022-02-18 | 山东德仕石油装备有限公司 | Collect and utilize carbon dioxide gaseous state injection well oil recovery device |
| CN115680603A (en) * | 2021-07-26 | 2023-02-03 | 中国石油天然气股份有限公司 | Device for controlling degassing of wellhead of carbon dioxide huff-puff well |
-
2020
- 2020-03-02 CN CN202020235686.3U patent/CN211692422U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360408A (en) * | 2020-12-03 | 2021-02-12 | 西南石油大学 | Novel method for improving recovery ratio of thickened oil by injecting carbon dioxide hot fluid |
| CN115680603A (en) * | 2021-07-26 | 2023-02-03 | 中国石油天然气股份有限公司 | Device for controlling degassing of wellhead of carbon dioxide huff-puff well |
| CN114059977A (en) * | 2021-10-22 | 2022-02-18 | 山东德仕石油装备有限公司 | Collect and utilize carbon dioxide gaseous state injection well oil recovery device |
| CN114059977B (en) * | 2021-10-22 | 2024-04-02 | 德仕能源科技集团股份有限公司 | Device for collecting and utilizing carbon dioxide gas injection well oil extraction |
| CN114059992A (en) * | 2021-10-27 | 2022-02-18 | 山东德仕石油装备有限公司 | Carbon dioxide injection huff and puff oil extraction ground device for oil field |
| CN114059992B (en) * | 2021-10-27 | 2024-04-02 | 德仕能源科技集团股份有限公司 | Oil field carbon dioxide injection huff-puff oil extraction ground device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20210302 |