CN202202852U - Carbon dioxide ground injecting system - Google Patents
Carbon dioxide ground injecting system Download PDFInfo
- Publication number
- CN202202852U CN202202852U CN2011202966742U CN201120296674U CN202202852U CN 202202852 U CN202202852 U CN 202202852U CN 2011202966742 U CN2011202966742 U CN 2011202966742U CN 201120296674 U CN201120296674 U CN 201120296674U CN 202202852 U CN202202852 U CN 202202852U
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- CN
- China
- Prior art keywords
- pump
- carbon dioxide
- liquid
- plunger metering
- metering pump
- 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.)
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Abstract
The utility model discloses a carbon dioxide ground injecting system. The system comprises a shielding electric pump, a plunger metering pump and an electric heater which are successively connected, wherein the electric heater is connected with a downstream device injecting port. The carbon dioxide ground injecting system has the advantages that after gaseous CO2 in a low-position tank system containing a small amount of gaseous CO2 is separated through the shielding electric pump, and liquid feeding is carried out on the plunger metering pump; the flow of injected liquid CO2 can be correctly controlled through controlling and regulating the stroke of the plunger metering pump and the motor frequency; by the carbon dioxide ground injecting system, the precise injecting range of a three-jar pump injecting system in the prior art is improved to 20-100% from 50-100%, thereby simplifying process flow, lowering cost and improving injection precision; the liquid CO2 can be pressurized to 35MPa by the plunger metering pump, and the pressure is higher than the highest pressure 25MPa pressurized by a three-jar pump; and the electric heater can conduct heating and temperature rising control on the liquid CO2 after pressurization, and the temperature can reach 80 DEG C.
Description
Technical field
The utility model relates to the ground injected system of a kind of oil field DP technology, especially relates to a kind of carbon dioxide ground injected system.
Background technology
At present domestic oil field or the block non-producing reserves that do not drop into exploitation as yet are the three low reserves that oil bearing formation property is poor, permeability is low, production capacity is low, abundance is low more than 95%.CO
2The displacement of reservoir oil that is used for the hyposmosis well is injected on ground, can improve the oil gas well production.Research both at home and abroad shows CO
2Be a kind of oil displacement agent very efficiently, aspect the difficult mining-employed reserves of exploitation hyposmosis, have especially than the more tangible technical advantage of water drive.Existing C O
2Injected system adopts pure liquid CO
2The three cylinder pump of gravity tank, injection pressure are up to about 25MPa, and accurately injection scope is 50 ~ 100% of a three cylinder pump metered flow, and can only inject liquid CO
2, therefore can not control preferably and inject CO
2Flow, temperature and phase.
The utility model content
The utility model has overcome shortcoming of the prior art, and a kind of carbon dioxide ground injected system is provided, and has broken through existing CO
2The three cylinder pump injection mode that inject to adopt is used the mode that shielded electric pump, plunger metering pump are aided with the large power, electrically heater instead, has improved the injection precision, has realized liquid CO
2Injection, supercritical CO
2Inject and high-temperature gas CO
2The mode of injecting.
The technical scheme of the utility model is: a kind of carbon dioxide ground injected system, comprise the shielded electric pump, plunger metering pump and the electric heater that connect successively, and said electric heater is connected with the downstream unit inlet.
Compared with prior art, the utility model has the advantages that: will contain a small amount of gaseous state CO through shielded electric pump
2The low level can system in gaseous state CO
2After separating, feed liquid to plunger metering pump, the control and regulation of stroke and electric machine frequency through plunger metering pump just can be controlled the liquid CO of filling exactly
2Flow, the accurate injection scope of three cylinder pump injected system in the prior art has been brought up to 20 ~ 100% by 50 ~ 100%, simplified technological process, lowered cost, improved the injection precision.But plunger metering pump liquid towards CO
2Boost to 35MPa, be higher than the maximum pressure 25MPa that three cylinder pump boosts; Electric heater can be to the liquid CO after boosting
2Carry out heat temperature raising control, temperature can reach 80 ℃.
Description of drawings
The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model.
The specific embodiment
A kind of carbon dioxide ground injected system, as shown in Figure 1, comprise shielded electric pump 2, plunger metering pump 3, electric heater 5 and the downstream unit inlet 7 etc. that connect successively.
The operating principle of the utility model is: the liquid CO of upstream device
21 gets into shielded electric pump 2, and 2 pairs of plunger metering pumps 3 of shielded electric pump are fed liquid, through the stroke and the electric machine frequency of control and regulation plunger metering pump 3, liquid towards CO
21 flow is accurately controlled, and plunger metering pump 3 liquid towards CO
21 boosts to required pressure, the liquid CO after plunger metering pump 3 boosts
24 get into electric heater 5, through control and regulation electric heater 5, to the liquid CO after boosting
24 carry out heat temperature raising, the CO after obtaining to heat up, boost
26 (is liquid CO
2Or supercritical CO
2Or gaseous state CO
2), get into downstream unit inlet 7.
Claims (1)
1. carbon dioxide ground injected system is characterized in that: comprise the shielded electric pump, plunger metering pump and the electric heater that connect successively, said electric heater is connected with the downstream unit inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202966742U CN202202852U (en) | 2011-08-16 | 2011-08-16 | Carbon dioxide ground injecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202966742U CN202202852U (en) | 2011-08-16 | 2011-08-16 | Carbon dioxide ground injecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202852U true CN202202852U (en) | 2012-04-25 |
Family
ID=45966981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202966742U Expired - Lifetime CN202202852U (en) | 2011-08-16 | 2011-08-16 | Carbon dioxide ground injecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202202852U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899284A (en) * | 2014-03-05 | 2014-07-02 | 陕西延长石油(集团)有限责任公司研究院 | Movable liquid CO2 injection skid-mounted device |
| CN107462693A (en) * | 2017-08-16 | 2017-12-12 | 北京拓普莱博油气田开发技术研究院 | A kind of high-precision CO2Quantitatively add instrument and its quantitative adding method |
-
2011
- 2011-08-16 CN CN2011202966742U patent/CN202202852U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899284A (en) * | 2014-03-05 | 2014-07-02 | 陕西延长石油(集团)有限责任公司研究院 | Movable liquid CO2 injection skid-mounted device |
| CN107462693A (en) * | 2017-08-16 | 2017-12-12 | 北京拓普莱博油气田开发技术研究院 | A kind of high-precision CO2Quantitatively add instrument and its quantitative adding method |
| CN107462693B (en) * | 2017-08-16 | 2023-06-30 | 北京拓普莱博油气田开发技术研究院 | High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180116 Address after: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee after: China Petroleum Engineering Construction Co Ltd Address before: 610017 Sichuan province Chengdu Xiaoguan Temple Backstreet No. 25 Patentee before: Engineering Design Co., Ltd., China Petroleum Group |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |
|
| CX01 | Expiry of patent term |