CN204941491U - Carbon dioxide flooding Water Alternate Gas integration injected system - Google Patents
Carbon dioxide flooding Water Alternate Gas integration injected system Download PDFInfo
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- CN204941491U CN204941491U CN201520644261.7U CN201520644261U CN204941491U CN 204941491 U CN204941491 U CN 204941491U CN 201520644261 U CN201520644261 U CN 201520644261U CN 204941491 U CN204941491 U CN 204941491U
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Abstract
The utility model discloses a kind of carbon dioxide flooding Water Alternate Gas integration injected system, include distribution manifold, water distribution header, note alcohol pipeline, blow-down pipe and several individual wells and inject pipeline, wherein distribution manifold and water distribution header are set up in parallel and are all connected with blow-down pipe afterwards, several individual wells inject pipeline and are set up in parallel, every bar individual well is injected pipeline and is connected with water distribution header with distribution manifold respectively by pipeline, and note alcohol pipeline injects pipeline with distribution manifold, water distribution header and several individual wells respectively by pipeline and is connected.Beneficial effect: this system architecture is compact, be convenient to management, simple to operate, investment cost is few, is applicable to national most of oil fields carbon dioxide flooding water alternating gas injection, and the cycle of injection shorter block uses.
Description
Technical field
The utility model relates to a kind of injected system, particularly a kind of carbon dioxide flooding Water Alternate Gas integration injected system.
Background technology
At present, carbon dioxide drive is by carbon dioxide injection oil reservoir, utilize it to dissolve in crude oil reduce viscosity of crude and interfacial tension and make crude oil volume expansion, produce the characteristics such as dissolved gas drive, to reduce injection pressure, effective expansion swept volume, improve crude oil fluidity, reduce residual oil saturation, improve the technology of oil recovery factor, injected by the Water Alternate Gas at Injection Well, better can improve the Liquid output of oil well.Ground injecting system is the mating portions of carbon dioxide drive, generally set up independently between injection allocation, the carbon dioxide of water under high pressure or liquefaction is alternately injected in stratum by pipeline and goes, improve oil recovery factor, the pressure of Injection Well generally at about 8MPa, distributing room for water injection or gas distribution room can the well number of injection allocation between 3-15 mouth.The technique that Water Alternate Gas injects: the water after sewerage treatment is up to standard, after the water filling pump house supercharging first in multi-purpose station, enters in the water distribution header of distributing room for water injection through water filling main line, water injection valve pond, then injects stratum by individual well waterflood-transmission line; Liquid carbon dioxide from high pressure sphere tank out after, be introduced into booster pump supercharging, then by gas injection main line, gas injection valve pond, enter in the distribution manifold of gas distribution room, then by individual well gas injection pipeline inject stratum.
Conventional carbon dioxide drive sets up independently water distribution, gas distribution room, when aqueous vapor is replaced and injected, by the production valve regulated of Injection Well well head, realizes the alter least-squares of aqueous vapor, there is following shortcoming when it uses:
(1) when Water Alternate Gas injects, need the open and close operation completing valve between different injection allocations and in well head, be not easy to the management of operation and equipment, maintenance.
(2) need supportingly have independently water filling (gas) pipeline to injecting well head between independent water distribution (gas), investment cost is injected costly compared to utilizing a flow in pipes, adds the expropriation of land between independent water distribution (gas), construction and mounting cost in addition.
Summary of the invention
The purpose of this utility model being not easy to operate to solve existing carbon dioxide drive injected system, safeguarding and the higher problem of cost and a kind of carbon dioxide flooding Water Alternate Gas integration injected system of providing.
The carbon dioxide flooding Water Alternate Gas integration injected system that the utility model provides includes distribution manifold, water distribution header, note alcohol pipeline, blow-down pipe and several individual wells and injects pipeline, wherein distribution manifold and water distribution header are set up in parallel and are all connected with blow-down pipe afterwards, several individual wells inject pipeline and are set up in parallel, every bar individual well is injected pipeline and is connected with water distribution header with distribution manifold respectively by pipeline, and note alcohol pipeline injects pipeline with distribution manifold, water distribution header and several individual wells respectively by pipeline and is connected.
Individual well injects on pipeline and is installed on flow meter.
Operating principle of the present utility model:
1, when Injection Well needs to inject water under high pressure, water filling main line water directly enters the water distribution header between water distribution (gas), before beginning water filling, first need close the production valve in the distribution manifold on this branch road, open production valve water distribution header leading to this Injection Well afterwards, now, individual well towards Injection Well injects in pipeline and is just filled with water under high pressure, keep the valve wide open of well head can ensure the lasting injection of water under high pressure, between water distribution (gas), switching flow there is flow meter, individual-well injection rate is measured;
2, when Injection Well needs to inject liquid carbon dioxide, gas injection main line carrys out gas and directly enters distribution manifold between water distribution (gas), before beginning gas injection, first need close the production valve on the water distribution header on this branch road, open production valve distribution manifold being led to this Injection Well afterwards, now, individual well towards Injection Well injects in pipeline and is just filled with liquid carbon dioxide, keep the valve wide open of well head can ensure the lasting injection of liquid carbon dioxide, between water distribution (gas), switching flow there is flow meter, liquid amount of carbon dioxide is injected to individual well and measures;
3, winter northern area cold weather, Water Alternate Gas easily forms ice when injecting and blocks up, and is the generation that anti-stagnant ice is stifled, is provided with note alcohol pipeline, after stopping water filling or liquid carbon dioxide, first open note alcohol pipeline, in flow in pipes, inject one section of methyl alcohol, make to form methanol slug in flow in pipes, and then start to inject liquid carbon dioxide or water, with contacting of methanol slug isolated water and liquid carbon dioxide, prevent in pipeline, form ice and block up, ensure completing smoothly of alter least-squares.
Valve on systematic pipeline described in the utility model and flow meter are the assembling of existing equipment, and therefore, concrete model and specification do not repeat further.
The beneficial effects of the utility model:
The utility model provides a kind of employing carbon dioxide flooding Water Alternate Gas integration injected system, the injected system of integration is set in the injection allocation of building jointly, by transforming by-pass valve control in same injection allocation, realize being injected after the water (gas) injected metering from well head by individual well flow in pipes.This system architecture is compact, be convenient to management, simple to operate, investment cost is few, is applicable to national most of oil fields carbon dioxide flooding water alternating gas injection, and the cycle of injection shorter block uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1, distribution manifold 2, water distribution header 3, note alcohol pipeline 4, blow-down pipe
5, individual well injects pipeline 6, flow meter.
Detailed description of the invention
Refer to shown in Fig. 1:
The carbon dioxide flooding Water Alternate Gas integration injected system that the utility model provides includes distribution manifold 1, water distribution header 2, note alcohol pipeline 3, blow-down pipe 4 and several individual wells and injects pipeline 5, wherein distribution manifold 1 and water distribution header 2 are set up in parallel and are all connected with blow-down pipe 4 afterwards, several individual wells inject pipeline 5 and are set up in parallel, every bar individual well is injected pipeline 5 and is connected with water distribution header 2 with distribution manifold 1 respectively by pipeline, and note alcohol pipeline 3 injects pipeline 5 with distribution manifold 1, water distribution header 2 and several individual wells respectively by pipeline and is connected.
Individual well injects on pipeline 5 and is installed on flow meter 6.
Operating principle of the present utility model:
1, when Injection Well needs to inject water under high pressure, water filling main line water directly enters the water distribution header 2 between water distribution (gas), before beginning water filling, first need close the production valve in the distribution manifold 1 on this branch road, open production valve water distribution header 2 leading to this Injection Well afterwards, now, individual well towards Injection Well injects pipeline 5 li and is just filled with water under high pressure, keep the valve wide open of well head can ensure the lasting injection of water under high pressure, between water distribution (gas), switching flow there is flow meter 6, individual-well injection rate is measured;
2, when Injection Well needs to inject liquid carbon dioxide, gas injection main line carrys out gas and directly enters distribution manifold 1 between water distribution (gas), before beginning gas injection, first need close the production valve on the water distribution header 2 on this branch road, open production valve distribution manifold 1 being led to this Injection Well afterwards, now, individual well towards Injection Well injects pipeline 5 li and is just filled with liquid carbon dioxide, keep the valve wide open of well head can ensure the lasting injection of liquid carbon dioxide, between water distribution (gas), switching flow there is flow meter 6, inject liquid amount of carbon dioxide to individual well to measure,
3, winter northern area cold weather, Water Alternate Gas easily forms ice when injecting and blocks up, and is the generation that anti-stagnant ice is stifled, is provided with note alcohol pipeline 3, after stopping water filling or liquid carbon dioxide, first open note alcohol pipeline 3, in flow in pipes, inject one section of methyl alcohol, make to form methanol slug in flow in pipes, and then start to inject liquid carbon dioxide or water, with contacting of methanol slug isolated water and liquid carbon dioxide, prevent in pipeline, form ice and block up, ensure completing smoothly of alter least-squares.
Claims (2)
1. a carbon dioxide flooding Water Alternate Gas integration injected system, it is characterized in that: include distribution manifold, water distribution header, note alcohol pipeline, blow-down pipe and several individual wells and inject pipeline, wherein distribution manifold and water distribution header are set up in parallel and are all connected with blow-down pipe afterwards, several individual wells inject pipeline and are set up in parallel, every bar individual well is injected pipeline and is connected with water distribution header with distribution manifold respectively by pipeline, and note alcohol pipeline injects pipeline with distribution manifold, water distribution header and several individual wells respectively by pipeline and is connected.
2. carbon dioxide flooding Water Alternate Gas integration injected system according to claim 1, is characterized in that: described individual well injects on pipeline and is installed on flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644261.7U CN204941491U (en) | 2015-08-25 | 2015-08-25 | Carbon dioxide flooding Water Alternate Gas integration injected system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644261.7U CN204941491U (en) | 2015-08-25 | 2015-08-25 | Carbon dioxide flooding Water Alternate Gas integration injected system |
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| Publication Number | Publication Date |
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| CN204941491U true CN204941491U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520644261.7U Active CN204941491U (en) | 2015-08-25 | 2015-08-25 | Carbon dioxide flooding Water Alternate Gas integration injected system |
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| CN (1) | CN204941491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023203360A1 (en) * | 2022-04-22 | 2023-10-26 | Totalenergies Onetech | Installation for enhanced oil recovery |
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2015
- 2015-08-25 CN CN201520644261.7U patent/CN204941491U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023203360A1 (en) * | 2022-04-22 | 2023-10-26 | Totalenergies Onetech | Installation for enhanced oil recovery |
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