CN204984387U - Liquid CO2 well head chemical agent injection device - Google Patents
Liquid CO2 well head chemical agent injection device Download PDFInfo
- Publication number
- CN204984387U CN204984387U CN201520753413.7U CN201520753413U CN204984387U CN 204984387 U CN204984387 U CN 204984387U CN 201520753413 U CN201520753413 U CN 201520753413U CN 204984387 U CN204984387 U CN 204984387U
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- CN
- China
- Prior art keywords
- chemical agent
- liquid
- pipeline
- well head
- injects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a liquid CO2 well head chemical agent injection device, inject upward pipeline of collateral branch pipe, chemical agent injection into including oil pipe, liquid carbon dioxide, oil pipe injects the pipeline into through cross -connection liquid carbon dioxide injection collateral branch pipe, chemical agent in position above lieing in the well head, the chemical agent injects into upward, and the outside cover of pipeline is equipped with the heating jacket. The chemical agent injects into goes up the interior and outside heating jacket that is of pipeline lower extreme connection income oil pipe to be provided with the valve at self. The storage tank that the splendid attire has the chemical agent was then connected to the end on the chemical agent injected the top tube line into. The chemical agent inject into to be gone up with being equipped with the measuring pump on the pipeline that pipeline and storage tank be connected. The utility model discloses in the time of can solving liquid CO2 and chemical agent and pour into into simultaneously, because the low (<of liquid CO2 temperature, - 16 DEG C ) and the freezing point of aqueous solution chemical agent higher (0 DEG C) causes the stifled phenomenon of the ice that produces in the mutual contact process, solved the difficult problem of site operation in -process.
Description
Technical field
The utility model relates to well head chemical agent injection technique, specifically a kind of liquid CO
2well head chemical agent injection device.
Background technology
Supercritical carbon dioxide has the features such as viscosity is low, good fluidity, solvability are strong, can significantly improve CO
2the oil recovery factor of gas drive.At present in order to ensure CO
2pipe safety and reduction running cost, general gas-phase transport or the above-critical state selected is carried.From gasholder to gas injection well head, CO
2exist with gaseous state or liquid form.As chemical agent and the CO injected with the liquid form of high pressure low temperature
2when injecting stratum from well head simultaneously, due to wellhead temperature too low (<-16 DEG C), and low by the freezing point of chemical agent of water preparation, produce oil pipe blocking phenomenon when very easily injecting according to one-tenth, chemical agent cannot be injected or the later stage must the problem such as pigging.
Utility model content
The purpose of this utility model is to provide a kind of liquid CO
2well head chemical agent injection device, can solve liquid CO
2when injecting with chemical agent, due to liquid CO simultaneously
2temperature low (<-16 DEG C) and the freezing point of chemistry of aqueous solution agent higher (0 DEG C), cause the ice produced in the process of contacting with each other to block up phenomenon, solve the difficult problem in site operation process.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, a kind of liquid CO
2well head chemical agent injection device, comprise oil pipe, liquid carbon dioxide injection side branch, the upper pipeline of chemical agent injection, well head top position to connect liquid carbon dioxide injection side branch to described oil pipe by four-way, chemical agent injects pipeline being positioned at, and described chemical agent injects upper pipeline exterior and is set with heating jacket.
Described chemical agent inject upper pipeline lower end to connect in oil pipe and outside be heating jacket, and self is provided with valve.
Described chemical agent injects upper pipeline upper end and then connects the storage tank being loaded with chemical agent.
Described chemical agent injects on upper pipeline and the tank connected pipeline of storage and is equipped with measuring pump.
Described liquid carbon dioxide injects side branch external port and also arranges valve, and oil pipe enters in oil well casing and is communicated to oil reservoir always.
Compared to prior art, the utility model has following beneficial effect:
The utility model injects the oil pipe top drilling of well head at liquid carbon dioxide, the tubule of band heating jacket is connected to oil pipe top, when chemical agent injects oil pipe by measuring pump from the storage tank storing chemical agent, owing to there being heating jacket to exist, by the chemical agent that heats and cryogenic high pressure liquid state CO
2then not easily produce ice at well head during contact and block up phenomenon.The utility model passes through at liquid CO in a word
2inject well head top and introduce chemical injection pipeline, and heating jacket is adopted to this pipeline exterior, prevent the chemical agent injected from freezing by outside heat, ensure the smooth injection of chemical agent.
Accompanying drawing explanation
Fig. 1 is the liquid CO of one of the present utility model
2the structural representation of well head chemical agent injection device.
In figure: 1-storage tank; 2-measuring pump; 3-heating jacket; 4,5,6-valve; 7-oil pipe; 8-sleeve pipe; 9-oil reservoir.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
According to Fig. 1, a kind of liquid CO
2well head chemical agent injection device, comprise oil pipe 7, liquid carbon dioxide injection side branch, the upper pipeline of chemical agent injection, well head top position to connect liquid carbon dioxide injection side branch to described oil pipe by four-way, chemical agent injects pipeline being positioned at, and described chemical agent injects upper pipeline exterior and is set with heating jacket 3.Described chemical agent inject upper pipeline lower end to connect in oil pipe and outside be heating jacket, and self be provided with valve 4.Described chemical agent injects upper pipeline upper end and then connects the storage tank 1 being loaded with chemical agent.Described chemical agent injects on upper pipeline and the tank connected pipeline of storage and is equipped with measuring pump 2.Described liquid carbon dioxide injects side branch external port and also arranges valve 5,6, and oil pipe enters in oil well casing 8 and is communicated to oil reservoir 9 always.
The liquid CO of cryogenic high pressure
2inject oil pipe in the pipeline controlled by valve 5, valve 6, the pipeline of the band heating jacket 3 that chemical agent is controlled by valve 4 injects oil pipe.When chemical agent passes through measuring pump 2 by storage tank 1, by being with pipeline and the CO of heating jacket 3
2when oil pipe interior contact, due to the existence of heating jacket 3, chemical agent obtains preheating, chemical agent is not frozen in low temperature (<-16 DEG C) condition, therefore can not block up oil pipe by ice.Be mixed with CO
2enter oil reservoir 9 with the fluid of chemical agent, play Oil reservoir disposal 9 and act on and effectively improve CO
2oil displacement efficiency.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (5)
1. a liquid CO
2well head chemical agent injection device, comprise oil pipe, liquid carbon dioxide injection side branch, the upper pipeline of chemical agent injection, it is characterized in that, well head top position to connect liquid carbon dioxide injection side branch to described oil pipe by four-way, chemical agent injects pipeline being positioned at, and described chemical agent injects upper pipeline exterior and is set with heating jacket.
2. the liquid CO of one according to claim 1
2well head chemical agent injection device, is characterized in that, described chemical agent inject upper pipeline lower end to connect in oil pipe and outside be heating jacket, and self is provided with valve.
3. the liquid CO of one according to claim 2
2well head chemical agent injection device, is characterized in that, described chemical agent injects upper pipeline upper end and then connects the storage tank being loaded with chemical agent.
4. the liquid CO of one according to claim 3
2well head chemical agent injection device, is characterized in that, described chemical agent injects on upper pipeline and the tank connected pipeline of storage and is equipped with measuring pump.
5. the liquid CO of one according to claim 1
2well head chemical agent injection device, is characterized in that, described liquid carbon dioxide injects side branch external port and also arranges valve, and oil pipe enters in oil well casing and is communicated to oil reservoir always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753413.7U CN204984387U (en) | 2015-09-25 | 2015-09-25 | Liquid CO2 well head chemical agent injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753413.7U CN204984387U (en) | 2015-09-25 | 2015-09-25 | Liquid CO2 well head chemical agent injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204984387U true CN204984387U (en) | 2016-01-20 |
Family
ID=55118766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520753413.7U Expired - Fee Related CN204984387U (en) | 2015-09-25 | 2015-09-25 | Liquid CO2 well head chemical agent injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204984387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735949A (en) * | 2016-02-02 | 2016-07-06 | 大庆金军石油科技开发有限公司 | Device for eliminating low-temperature liquid carbon dioxide injection cold damage |
| CN107288594A (en) * | 2017-09-04 | 2017-10-24 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of pressure injection system and method for improving CO_2 stimulation effect |
-
2015
- 2015-09-25 CN CN201520753413.7U patent/CN204984387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735949A (en) * | 2016-02-02 | 2016-07-06 | 大庆金军石油科技开发有限公司 | Device for eliminating low-temperature liquid carbon dioxide injection cold damage |
| CN105735949B (en) * | 2016-02-02 | 2018-02-09 | 大庆金军石油科技开发有限公司 | One kind releases low temperature liquid carbon dioxide injection cold damage device |
| CN107288594A (en) * | 2017-09-04 | 2017-10-24 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of pressure injection system and method for improving CO_2 stimulation effect |
| CN107288594B (en) * | 2017-09-04 | 2019-08-02 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of pressure injection system and method improving CO_2 stimulation effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160120 Termination date: 20160925 |