CN203756144U - Mobile CO2 injection device - Google Patents
Mobile CO2 injection device Download PDFInfo
- Publication number
- CN203756144U CN203756144U CN201420102816.0U CN201420102816U CN203756144U CN 203756144 U CN203756144 U CN 203756144U CN 201420102816 U CN201420102816 U CN 201420102816U CN 203756144 U CN203756144 U CN 203756144U
- Authority
- CN
- China
- Prior art keywords
- pipe
- injection
- pipeline
- liquid
- injection 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.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 53
- 239000007924 injection Substances 0.000 title claims abstract description 53
- 239000003129 oil well Substances 0.000 claims abstract description 18
- 230000001174 ascending effect Effects 0.000 claims description 25
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000010438 heat treatment Methods 0.000 abstract description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 9
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 description 7
- 230000008016 vaporization Effects 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- 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
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a mobile CO2 injection device, and belongs to the field of oil field CO2 oil displacement equipment. Liquid-state CO2 is prone to forming carbonic acid to corrode the pipe wall of an oil well, after the liquid-state CO2 is expanded, pressure inside a pipeline is increased, and the safety of a system is lowered. In the mobile CO2 injection device, a CO2 storage tank (1) is communicated with an inlet of an injection pump (9) through a liquid inlet pipe, an outlet of the injection pump (9) is communicated with a liquid outlet pipe (10), the liquid outlet pipe (10) is communicated with an injection pipe (5) stretching into the oil well, a heating device is arranged on the injection pipe (5), and a second safety valve (20) is arranged at the connecting position of the liquid outlet pipe (10) and the injection pipe (5). The liquid-state CO2 is heated to be vaporized through the heating device, the liquid-state CO2 is prevented from forming the carbonic acid, the service life of the pipe wall of the oil well is prolonged, the second safety valve exhausts the overpressure CO2 to relieve the pressure, the pressure inside the pipeline is kept stable and the safety of the pipeline is improved.
Description
Technical field
Portable CO
2injection device, belongs to oil field CO
2displacement of reservoir oil apparatus field.
Background technology
Oil well is noted CO at present
2technology of reservoir sweep is widely adopted, current CO
2injection device passes through injection pump directly by liquid CO
2under Injection Well, liquid CO
2easily form the tube wall of carbonic acid corrosion oil well, use dangerous, even and by liquid CO
2after liquefaction, injecting in oil well and also have the unsafe problem of pipeline, is mainly because liquid CO
2volume expansion after vaporization, the pressure in pipeline increases, and has reduced the safety of system.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of oil well tube wall application life, stable, safe portable CO of pipeline inner pressure of improving is provided
2injection device.
The utility model solves the technical scheme that its technical problem adopts: this movable type CO
2injection device, comprises CO
2storage tank and injection pump, CO
2storage tank is communicated with the entrance of injection pump by feed tube, inject delivery side of pump and be communicated with drain pipe, and the ascending pipe in oil well is stretched in drain pipe connection, and described ascending pipe is provided with heater, and drain pipe and ascending pipe junction are provided with the second safety valve.By heater by liquid CO
2heating vaporization, avoids liquid CO
2form carbonic acid corrosion oil well tube wall, the application life of improving oil well tube wall, the CO after heating
2volume expansion, causes the pressure in pipeline to increase, and the second safety valve is by the CO of superpressure
2gas is discharged pressure release, keeps pipeline inner pressure stable, the safety that improves pipeline.
Preferably, described heater comprises electromagnetic heater and the second thermometer, and electromagnetic heater is fixed on the outside of ascending pipe, and the second temperature is counted the bimetallic thermometer being fixed on ascending pipe.Electromagnetic heater heating effect is good, and heating-up temperature is accurate, is convenient to accurately control CO
2temperature, bimetallic thermometer measurement category is large, can measure liquid state or gaseous state CO
2.
Further, described injection delivery side of pump is provided with the first safety valve and the second pressure gauge, and the second pressure gauge and injection pump are connected with controller by wire.The first safety valve prevents that the excessive pipeline that causes of the output pressure of injection pump is dangerous, keeps the pressure stability in pipeline, the pressure in the second pressure gauge Real-Time Monitoring pipeline, and by controller, adjust the output pressure of injection pump.
Further, described drain pipe is communicated with CO by precooling pipe
2storage tank, precooling pipe is provided with the 4th stop valve.By precooling pipe, make CO
2in pipeline, circulate, pipeline is carried out to precooling, reduce the temperature difference, safe and reliable.
Further, described drain pipe is provided with flap valve and delivery pipe.When overhauling, can be by the CO in pipeline by delivery pipe
2emptying, prevent that maintainer from sucking excessive CO
2cause and suffocate, improve maintenance safety, flap valve prevents CO
2reflux.
Further, described feed tube, injection pump and drain pipe are fixed on a sled piece.Do not need to set up fixed pump station, according to the practical situation of oil well, can shift with the transfer of oil well, compact conformation, volume are little, and transhipment is convenient, accelerate the progress of engineering, reduce costs.
Compared with prior art, portable CO
2the beneficial effect that injection device has is:
1, by heater by liquid CO
2heating vaporization, avoids liquid CO
2form carbonic acid corrosion oil well tube wall, in the application life of improving oil well tube wall, the second safety valve is by the CO of superpressure
2gas is discharged pressure release, prevents the CO after heating
2because of volume expansion, cause the pressure in pipeline to increase, keep pipeline inner pressure stable, the safety that improves pipeline.
2, the first safety valve prevents that the excessive pipeline that causes of output pressure of injection pump is dangerous, the pressure in the second pressure gauge Real-Time Monitoring pipeline, and by controller, adjust the output pressure of injection pump, keep the pressure stability in pipeline.
3, feed tube, injection pump and drain pipe are fixed on a sled piece, do not need to set up fixed pump station, according to the practical situation of oil well, can shift with the transfer of oil well, and compact conformation, volume are little, and transhipment is convenient, accelerates the progress of engineering, reduces costs.
Accompanying drawing explanation
Fig. 1 is portable CO
2the schematic diagram of injection device embodiment 1.
Fig. 2 is portable CO
2the schematic diagram of injection device embodiment 2.
Wherein: 1, CO
2storage tank 2, the first gate valve 3, feed tube 4, the first thermometer 5, ascending pipe 6, the first pressure gauge 7, the first stop valve 8, the second gate valve 9, injection pump 10, drain pipe 11, the second pressure gauge 12, the second stop valve 13, the first safety valve 14, the 3rd gate valve 15, flap valve 16, the 3rd pressure gauge 17, the 3rd stop valve 18, the 4th gate valve 19, delivery pipe 20, the second safety valve 21, the 4th stop valve 22, precooling pipe 23, the 5th gate valve 24, the 5th stop valve 25, the 6th gate valve 26, the second thermometer 27, electromagnetic heater 28, the 7th gate valve 29, the 6th stop valve.
The specific embodiment
Below in conjunction with the portable CO of 1 ~ 2 pair of the utility model of accompanying drawing
2injection device is described further, and wherein embodiment 2 is most preferred embodiment.
Embodiment 1
With reference to Fig. 1, portable CO
2injection device, comprises CO
2storage tank 1, injection pump 9 and ascending pipe 5, CO
2storage tank 1 is communicated with the entrance of injection pump 9 by feed tube 3, injection pump 9 outlets are communicated with ascending pipe 5 by drain pipe 10, and ascending pipe 5 is provided with electromagnetic heater 27, and injection pump 9 is by CO
2after supercharging, by drain pipe 10, export, drain pipe 10 is provided with a plurality of valves, the liquid CO in ascending pipe 5
2after electromagnetic heater 27 heating vaporization under Injection Well.
Feed tube 3 is provided with the first gate valve 2, the first thermometer 4, the first pressure gauge 6, the first stop valve 7 and the second gate valve 8, opens the rear liquid CO of the first gate valve 2
2by CO
2storage tank 1 is discharged, the CO in the first 4 pairs, thermometer pipeline
2carry out thermometric, the pressure in the first pressure gauge 6 Real-Time Monitoring pipelines, the safety that improves pipeline, the first gate valve 2, the first stop valve 7 and the second gate valve 8 are occurring to leak or can quick closedown defective pipe during other faults, improve safety.
Drain pipe 10 is provided with the second pressure gauge 11, the second stop valve 12, the first safety valve 13 and the 3rd gate valve 14, can detect the CO of injection pump 9 outlets by the second pressure gauge 11
2pressure, the second pressure gauge 11 is connected with controller with injection pump 9 by wire, controller is PLC frequency-variable controller, the pressure of measuring according to the second pressure gauge 11, by controller, regulate the rotating speed of injection pump 9, the output pressure that regulates injection pump 9, remains in a stable scope pressure in drain pipe 10.The second stop valve 12 and the 3rd gate valve 14 guarantee pipeline safety, easy access simultaneously, and the pressure in pipeline, higher than the opening pressure of the first safety valve 13, by the first safety valve 13 pressure releases, guarantees pipeline safety, keeps pipeline inner pressure stable simultaneously.
On drain pipe 10, be also provided with flap valve 15, the 3rd pressure gauge 16, the 3rd stop valve 17, the 4th gate valve 18 and delivery pipe 19, the four stop valve 21 outlets and be communicated with ascending pipe 5, liquid CO
2by ascending pipe 5, inject into well CO when flap valve 15 prevents from stopping filling or maintenance
2reflux, the 3rd pressure gauge 16 and the second pressure gauge 11 be the pressure of signal piping diverse location respectively, when pipeline breaks down, by the second pressure gauge 11 and the 3rd pressure gauge 16, can rapidly, accurately find trouble point, the safety that the 3rd stop valve 17 and the 4th gate valve 18 improve pipeline.When pipeline overhauls, by delivery pipe 19 by the CO in pipeline
2emptying, prevent that maintainer from sucking a large amount of CO
2cause and suffocate, improve maintenance safety.
Drain pipe 10 is provided with the second safety valve 20 and the 4th stop valve 21, CO with ascending pipe 5 junctions
2pressure after vaporization in pipeline increases, and the second safety valve 20 can prevent the pressure superpressure in pipeline, improves the safety of pipeline, and the flap valve 15 arranging on drain pipe 10 can prevent the CO in ascending pipe 5
2reflux.Other structures are with embodiment 1.
On ascending pipe 5, be also provided with the 6th gate valve 25, the second thermometer 26, the 7th gate valve 28 and the 6th stop valve 29, electromagnetic heater 27 is fixed on the outside of ascending pipe 5, the second thermometer 26 is for being fixed on the bimetallic thermometer on ascending pipe 5, the liquid CO in 27 pairs of ascending pipes 5 of electromagnetic heater
2heating, CO
2after vaporization, under Injection Well, avoid liquid CO
2form carbonic acid corrosion oil well tube wall, CO
2volume expansion after vaporization, pressure in pipeline increases, and adopts the temperature of the second thermometer 26 in can Measurement accuracy ascending pipe 5, prevent that excess Temperature from causing the pressure superpressure in ascending pipe 5, electromagnetic heater 27 heating effects are good, and temperature fluctuation is little, are convenient to accurately control CO
2temperature.
Embodiment 2
With reference to Fig. 2, drain pipe 10 is also communicated with CO by a precooling pipe 22
2storage tank 1, precooling pipe 22 is provided with the 5th gate valve 23 and the 5th stop valve 24, because liquid CO
2temperature is below-30 ℃, and the temperature of injection pump 9 and pipeline is all very high, and the temperature difference is very large, needs first system precooling until the temperature on pipeline and CO
2temperature in storage tank 1 is identical, closes the 5th gate valve 23 and the 5th stop valve 24, completes precooling.Other structures are with embodiment 1.
Heater in the utility model can also adopt the vaporizer of resistance heated or other structures.
The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (6)
1. a portable CO
2injection device, comprises CO
2storage tank (1) and injection pump (9), CO
2storage tank (1) is communicated with the entrance of injection pump (9) by feed tube, the outlet of injection pump (9) is communicated with drain pipe (10), the ascending pipe (5) in oil well is stretched in drain pipe (10) connection, it is characterized in that: described ascending pipe (5) is provided with heater, drain pipe (10) is provided with the second safety valve (20) with ascending pipe (5) junction.
2. portable CO according to claim 1
2injection device, it is characterized in that: described heater comprises electromagnetic heater (27) and the second thermometer (26), electromagnetic heater (27) is fixed on the outside of ascending pipe (5), and the second thermometer (26) is for being fixed on the bimetallic thermometer on ascending pipe (5).
3. portable CO according to claim 1
2injection device, is characterized in that: the outlet of described injection pump (9) is provided with the first safety valve (13) and the second pressure gauge (11), and the second pressure gauge (11) is connected with controller with injection pump (9) by wire.
4. portable CO according to claim 1
2injection device, is characterized in that: described drain pipe (10) is communicated with CO by precooling pipe (22)
2storage tank (1), precooling pipe (22) is provided with the 4th stop valve (21).
5. according to the portable CO described in claim 1 or 4
2injection device, is characterized in that: described drain pipe (10) is provided with flap valve (15) and delivery pipe (19).
6. portable CO according to claim 1
2injection device, is characterized in that: described feed tube, injection pump (9) are fixed on a sled piece with drain pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420102816.0U CN203756144U (en) | 2014-03-08 | 2014-03-08 | Mobile CO2 injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420102816.0U CN203756144U (en) | 2014-03-08 | 2014-03-08 | Mobile CO2 injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756144U true CN203756144U (en) | 2014-08-06 |
Family
ID=51251431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420102816.0U Expired - Lifetime CN203756144U (en) | 2014-03-08 | 2014-03-08 | Mobile CO2 injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756144U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134145A (en) * | 2015-09-18 | 2015-12-09 | 博山水泵制造厂 | Carbon dioxide flooding technology |
| CN105804711A (en) * | 2016-04-28 | 2016-07-27 | 中国石油天然气股份有限公司 | CO2 corrosion preventing method and device of CO2 flooding oil injection well shaft |
| CN110608022A (en) * | 2019-08-28 | 2019-12-24 | 中联煤层气有限责任公司 | Carbon dioxide landfill method for increasing yield of coal bed gas reservoir |
-
2014
- 2014-03-08 CN CN201420102816.0U patent/CN203756144U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134145A (en) * | 2015-09-18 | 2015-12-09 | 博山水泵制造厂 | Carbon dioxide flooding technology |
| CN105134145B (en) * | 2015-09-18 | 2018-01-19 | 博山水泵制造厂 | Carbon dioxide drive technique |
| CN105804711A (en) * | 2016-04-28 | 2016-07-27 | 中国石油天然气股份有限公司 | CO2 corrosion preventing method and device of CO2 flooding oil injection well shaft |
| CN105804711B (en) * | 2016-04-28 | 2018-04-03 | 中国石油天然气股份有限公司 | A kind of CO2The anti-CO of displacement of reservoir oil injection well shaft2Caustic solution and device |
| CN110608022A (en) * | 2019-08-28 | 2019-12-24 | 中联煤层气有限责任公司 | Carbon dioxide landfill method for increasing yield of coal bed gas reservoir |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756144U (en) | Mobile CO2 injection device | |
| CN205639956U (en) | Prevent leaking chemical industry gas pipeline flange | |
| CN205300835U (en) | Flow flow resistance coefficient detection device of valve | |
| CN204356058U (en) | Beer supercharging stabilizing machine | |
| CN203099342U (en) | Dripping balance tank filling device | |
| CN104865043B (en) | A kind of LNG cold flow characteristics experimental provision | |
| CN203756143U (en) | Mobile CO2 injection device | |
| CN104792814B (en) | LNG with pressure flashes experimental method | |
| CN206235430U (en) | A kind of anti-freezing structure of steam pipework device for pressure measurement | |
| CN202614559U (en) | Heat-preserving sampling device for coal gas | |
| CN202598128U (en) | Skid-mounted type natural gas gasification pressure-regulating and measuring output device | |
| CN206802762U (en) | LNG filling machines | |
| CN201517413U (en) | Gas well remote control automatic medicine adding device | |
| CN205579142U (en) | Cryogenic liquids filling system with anti -overflow goes out function | |
| CN204085597U (en) | A kind of Pitot bar mass flowmeter | |
| CN203704553U (en) | Lng pipeline system vacuum drying device | |
| CN103307925A (en) | Transverse tube-type cooling tower with leakage testing and overhauling function and overhauling and leakage testing method | |
| CN203719706U (en) | Differential pressure flow measurement device capable of improving LPG (liquefied petroleum gas) flow measurement accuracy | |
| CN106968662A (en) | A kind of portable emptying liquid-separation skid-mounted unit with function of measuring of dropping a hint | |
| CN203657883U (en) | Steam drum water level measuring device and steam drum | |
| CN205027406U (en) | Frostproofing liquid level meter of self -supporting formula and container thereof | |
| CN203732105U (en) | Isolated pressure acquiring device for steam flow measurement | |
| CN208606854U (en) | It is a kind of for measuring the device of cold box interior cryogenic liquid liquid level | |
| CN102927446B (en) | Condensed water discharging device for coal gas pressure pipeline and using method thereof | |
| CN104777185B (en) | LNG with pressure flashes experiment porch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |