CN108425663A - A kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio - Google Patents
A kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio Download PDFInfo
- Publication number
- CN108425663A CN108425663A CN201810298689.9A CN201810298689A CN108425663A CN 108425663 A CN108425663 A CN 108425663A CN 201810298689 A CN201810298689 A CN 201810298689A CN 108425663 A CN108425663 A CN 108425663A
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- check valve
- water
- corrosion
- injection
- carbon dioxide
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- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 94
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000002347 injection Methods 0.000 title claims abstract description 48
- 239000007924 injection Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 42
- 238000011084 recovery Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000005260 corrosion Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 238000011176 pooling Methods 0.000 claims abstract description 26
- 230000007797 corrosion Effects 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002513 implantation Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 229960004424 carbon dioxide Drugs 0.000 description 37
- 239000007789 gas Substances 0.000 description 32
- 239000003921 oil Substances 0.000 description 23
- 239000003129 oil well Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 5
- 241000790917 Dioxys <bee> Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- VTVVPPOHYJJIJR-UHFFFAOYSA-N carbon dioxide;hydrate Chemical compound O.O=C=O VTVVPPOHYJJIJR-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention provides the anticorrosion structure and method that a kind of multi-functional carbon dioxide injection improves recovery ratio, which is characterized in that structure includes mainly：First passage, second channel, tapered casing string, tapered tubing string, fluid pooling zone, wherein, first passage by between tapered casing string and tapered tubing string annular space and packer, the first check valve form, second channel is made of plain tubing and seal plug, the second check valve, and two channels can be by CO2It is separated with water, prevents from being mixed to form carbonic acid corrosion tube body；Fluid pooling zone is made of anti-corrosion casing, anti-corrosion oil pipe, packer, the first check valve, the second check valve, seal plug and shaft bottom；Its method is characterized by：The CO being separately injected by first passage and second channel2Or water can realize CO by fluid pooling zone2Being continuously injected into of gas, CO2The injection of the slug of gas or liquid, CO2The alternating injection of water, CO2Four kinds of techniques such as injection while water.The present invention is suitable for carbon dioxide flooding oil gas Development Engineering technical field.
Description
Technical field
The present invention relates to the field of engineering technology that carbon dioxide injection improves oil recovery factor, specifically a kind of multi-functional notes two
Carbonoxide improves the anticorrosion structure and method of recovery ratio.
Background technology
In oil field development, gas drive is to drive a kind of raising original developed rapidly later after water drive, polymer flooding, steam
The method of oil recovery.In gas drive production technique, due to carbon dioxide injection oil reservoir, recovery ratio can not only be greatly improved,
And it can also achieve the purpose that carbon dioxide greenhouse gas emission reduction so that carbon dioxide flooding oil tech is most widely used.Two
Carbonoxide is a kind of gas that the solubility in You Heshui is very high, fine with the intersolubility of crude oil, therefore the displacement principle of the technology
It exactly injects carbon dioxide into oil reservoir, crude oil volume expansion is made after dissolving, to reduce oil density, viscosity, interface
Resistance during power and crude oil flow.In addition, carbon dioxide has the function of dissolved gas drive in crude oil, gas-powered is generated
Power, so as to significantly improve displacement efficiency.
Currently, existing injecting scheme includes：（1）Continuous carbon dioxide injection gas；（2）Note carbonated water；（3）Note titanium dioxide
Water filling after carbon gas or liquid slug；（4）Alternate water injection and carbon dioxide gas after carbon dioxide injection gas or liquid slug
（WAG methods）；（5）Carbon dioxide and water inject simultaneously.Wherein（3）、（4）Belong to carbon dioxide injection slug Technology.Each injection side
Case has following characteristics：
1）Continuous note CO2Gas is directly by CO2Gas injects oil reservoir, and oil displacement efficiency is more apparent, but due to unfavorable mobility
Than easily leading to early stage has channeling, drastically reducing the utilization rate of carbon dioxide, dramatically increase carbon dioxide-depleted and injection cost.
2）Carbonated water is noted, essentially used carbon dioxide solubility in the characteristic of water, by water-dioxide solution（That is carbon
Sour water）After being injected into stratum, the carbon dioxide diffused out contacts with crude oil and carries out the displacement of reservoir oil.However, the injecting scheme is not only
Diffusion process is slower, and Flooding Efficiency and recovery ratio are relatively low, and extremely serious to the corrosion of oil well pipe material.
3）Note CO2And then water filling after gas or liquid slug is water-driven carbon dioxide slug, realizes mother oil displacement.
Compared with noting carbonated water, the recovery ratio of this method is higher, but also more serious to the corrosion of oil well pipe material.
4）Note CO2Alternate water injection and CO after gas or liquid slug2Gas（WAG methods）, it is by CO2With water with smaller section
Clearance gauge cun is alternately injected into oil reservoir, can improve the mobility of carbon dioxide, improve the sweep efficiency of oil reservoir.
5）Carbon dioxide and water inject simultaneously, be it is a kind of using double injection systems simultaneously by water and carbon dioxide injection oil reservoir
Method, the construction of this technique and the cost of completion are higher.
In above injecting scheme, other than being continuously injected into carbon dioxide gas, remaining injecting scheme has water
It participates in, wherein be directly injected into corrosion most serious of this injecting scheme of carbonated water to injection well, therefore do not adopted substantially in actual condition
With the injecting scheme.It being proved in analog study in spite of scholar, WAG injection methods are more superior than continuous or single hop plug injection method,
But according to the difference of live actual condition, the injecting scheme taken also is not quite similar.Therefore, just at present, carbon dioxide
What is mainly used in technology of reservoir sweep has：Continuous note CO2Gas, single hop plug method, WAG methods, CO2Water is same to note method.
In addition, domestic Gas Company is in order to slow down corrosion of the carbon dioxide to pit shaft, some uses in injection process
A large amount of corrosion inhibiter, the even direct ordinary carbon steel replaced using anti-corrosion tubing in pit shaft of some.Unquestionably, the above method is not only
Oil-gas mining cost is significantly increased, and may be only available for the single injecting scheme under certain operating mode.Therefore, end mesh
Before, there are no can adjust injecting scheme according to different operating modes, and can control carbon dioxide corrosion very well is efficiently injected into knot
Structure and method.For this purpose, the present invention proposes that a kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio, not only may be used
Realize CO simultaneously2Drive four kinds of main injecting schemes used by improving recovery ratio（Continuous note CO2Gas, single hop plug method, WAG methods,
CO2Water is same to note method）, and can effectively prevent or mitigate CO2Corrosion to pit shaft.
Invention content
Based on the above technical problem, the present invention provides the anticorrosion structures that a kind of multi-functional carbon dioxide injection improves recovery ratio
And method, it can not only realize CO2Four kinds of main injecting schemes used by improving recovery ratio are driven, and efficiently solve oil well
CO occurs in displacement process for tube material2The technical barrier of corrosion, while CO is reduced to greatest extent2Displacement cost.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of multi-functional carbon dioxide injection improves the anticorrosion structure of recovery ratio, and structure includes mainly：Ordinary casing, first passage,
Packer, the first check valve, the first crossover sub, the first anti-corrosion short circuit, tapered casing string, plain tubing, second channel, sealing
Plug, the second check valve, the second crossover sub, the second anti-corrosion short circuit, tapered tubing string, fluid pooling zone, oil reservoir, shaft bottom.Its
In, the first check valve, the second check valve and seal plug are all made of corrosion resistant material；Ordinary casing passes through the first crossover sub and
One anti-corrosion short circuit connection composition tapered casing string, it is multiple that plain tubing connect composition by the second crossover sub with the second anti-corrosion short circuit
Tubing string is closed, wherein the first anti-corrosion short circuit and second anti-corrosion short since corrosion resistant alloy dosage is few, can save CO to the maximum extent2's
Displacement cost；Annular space and packer, the first check valve between tapered casing string and tapered tubing string form first passage,
It can be used for being separately injected into carbon dioxide or water, wherein packer is between the second anti-corrosion short circuit and the first anti-corrosion short circuit, and first
Check valve is located on packer；Plain tubing and seal plug, the second check valve form second channel, it can also be used to be separately injected into
Carbon dioxide or water, wherein seal plug are located at the second anti-corrosion short circuit lower end, and the second check valve is located on seal plug；Dioxy
Change carbon or water is separately injected into first passage and second channel and can keep apart two kinds of fluid machineries, the two is prevented to be mixed to form
Carbonic acid corrodes oil well pipe material；It is first anti-corrosion short circuit, the second anti-corrosion short circuit, packer, the first check valve, the second check valve, close
Block head and shaft bottom composition fluid pooling zone, the CO being separately injected by first passage and second channel2Or water is converged by fluid
Ji Qu can realize CO2Being continuously injected into of gas, CO2The injection of the single hop plug of gas or liquid, CO2The alternating injection of water, CO2Water
While injection etc. four kinds of techniques.
A kind of multi-functional carbon dioxide injection improves the anti-corrosion method of recovery ratio, and method mainly includes the following steps that：
a）Suitable injecting scheme, i.e. CO are determined according to actual condition demand2Gas is continuously injected into, single hop plug injects, dioxy
Change carbon and water alternately injection, CO2Water injects simultaneously；
b）After determining injecting scheme, CO is injected separately into first passage and second channel by respective sequence2And water, or to first
It is injected separately into water and CO in channel and second channel2；
c）Fluid in two channels is in proportion and quantitative in an orderly manner by the according to specific implantation temperature, pressure and flow rates demand
One check valve is unidirectionally injected with the second check valve to fluid pooling zone；
d）CO2Fluid can be directly entered oil reservoir by fluid pooling zone, realize CO2The Drainage process that gas is continuously injected into；CO2Gas
Body or liquid slug can be directly entered and then water filling after oil reservoir by fluid pooling zone, realize CO2The injection of fluid single hop plug
Drainage process；CO2Gas or liquid slug can enter alternate water injection and CO after oil reservoir by fluid pooling zone2Gas realizes CO2-
The Drainage process that water alternately injects；CO2Enter oil reservoir after the mixed phase of fluid pooling zone with water, realizes CO2The concurrently injected drive of water
Oily technique.
The present invention has the following advantages that compared with prior art：
（1）The present invention is injected separately into water or carbon dioxide using two injection channels, efficiently solves what the two mixing generated
Etching problem, and can realize four kinds of injecting schemes, provide great flexibility and facility for the scheme selection of actual condition
Property.
（2）Check valve is arranged to prevent from backflowing, and to the part of fluid pooling zone in the present invention in two injection channels
Oil well pipe uses corrosion resistant alloy, not only solves the technical barrier easily corroded during carbon dioxide drive, also maximum limit
Reduce anticorrosion cost to degree.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Specific implementation mode
Below in conjunction with the accompanying drawings 1, the present invention will be described in detail.
As shown in the picture, the anticorrosion structure that a kind of multi-functional carbon dioxide injection proposed by the present invention improves recovery ratio mainly wraps
It includes：
It is ordinary casing 1, first passage 2, packer 3, the first check valve 4, the first crossover sub 5, the first anti-corrosion short circuit 6, compound
Casing string 7, plain tubing 8, second channel 9, seal plug 10, the second check valve 11, the second crossover sub 12, second are anti-corrosion short
Connect 13, tapered tubing string 14, fluid pooling zone 15, oil reservoir 16, shaft bottom 17.Wherein, the first check valve 4, the second check valve 11 and
Seal plug 10 is all made of corrosion resistant material；It is multiple that ordinary casing 1 connect composition by the first crossover sub 5 with the first anti-corrosion short circuit 6
Trap tubing string 7, plain tubing 8 connect composition tapered tubing string 14 by the second crossover sub 12 with the second anti-corrosion short circuit 13,
In the first anti-corrosion short circuit 6 and the second anti-corrosion short circuit 13 can save CO to the maximum extent2Displacement cost；Tapered casing string 7 and multiple
Annular space and packer 3, the first check valve 4 closed between tubing string 14 forms first passage 2, can be used for being separately injected into dioxy
Change carbon or water, for wherein packer 3 between the second anti-corrosion short circuit 13 and the first anti-corrosion short circuit 6, the first check valve 4 is located at packing
On device 3；Plain tubing 8 and seal plug 10, the second check valve 11 form second channel 9, it can also be used to be separately injected into titanium dioxide
Carbon or water, wherein and seal plug 10 be located at 13 lower end of the second anti-corrosion short circuit, the second check valve 11 is located on seal plug 10；
The first passage 2 and second channel 9 that carbon dioxide or water are separately injected into can keep apart two kinds of fluid machineries, prevent the two mixed
Conjunction forms carbonic acid corrosion oil well pipe material；It is first anti-corrosion short circuit 6, the second anti-corrosion short circuit 13, packer 3, the first check valve 4, close
Block head 10, the second check valve 11 and shaft bottom 17 form fluid pooling zone 15, are individually noted by first passage 2 and second channel 9
The CO entered2Or water can realize CO by fluid pooling zone 152Being continuously injected into of gas, CO2The injection of the single hop plug of gas or liquid,
CO2The alternating injection of water, CO2Four kinds of techniques such as injection while water.
First passage 2 and second channel 9 of the present invention can be injected separately into CO2And water, it can also be injected separately into water and CO2,
It is arbitrarily selected in Practical Project；The injection sequencing of two kinds of fluids is determined according to Practical Project, to realize four kinds of injection sides
Case.
To make goal of the invention, technical solution and the advantage of the present invention be more clear, 1 pair of multi-functional note below in conjunction with the accompanying drawings
The anti-corrosion method that carbon dioxide improves recovery ratio is illustrated, and detailed implementation methods are as follows：
Step 1：Suitable injecting scheme, i.e. CO are determined according to actual condition2Gas is continuously injected into, single hop plug injects, CO2-Water
Alternately injection, CO2Water injects simultaneously.
Step 2：After determining injecting scheme, CO is injected separately into first passage 2 and second channel 9 by respective sequence2With
Water, or it is injected separately into water and CO into first passage 2 and second channel 92。
Step 3：Fluid in two channels is in proportion and quantitative orderly according to specific implantation temperature, pressure and flow rates demand
Ground is unidirectionally injected by the first check valve 4 and the second check valve 11 to fluid pooling zone 15.
Step 4：CO2Fluid can be directly entered oil reservoir 16 by fluid pooling zone 15, realize CO2The drive that gas is continuously injected into
Oily technique；CO2And then CO is realized in water filling after gas or liquid slug can be directly entered 16 by fluid pooling zone 152Fluid list
The Drainage process of slug injection；CO2Gas or liquid slug can be entered by fluid pooling zone 15 after oil reservoir 16 alternate water injection and
CO2Gas realizes CO2The Drainage process that water alternately injects；CO2Enter oil reservoir 16 after 15 mixed phase of fluid pooling zone with water, it is real
Existing CO2The concurrently injected Drainage process of water.
Claims (2)
1. a kind of multi-functional carbon dioxide injection improves the anticorrosion structure of recovery ratio, it is characterised in that：Include mainly：First passage
（2）, the first check valve（4）, the first crossover sub（5）, the first anti-corrosion short circuit（6）, tapered casing string（7）, second channel（9）、
Seal plug（10）, the second check valve（11）, the second crossover sub（12）, the second anti-corrosion short circuit（13）, tapered tubing string（14）、
Fluid pooling zone（15）；Wherein, the first check valve（4）, the second check valve（11）And seal plug（10）By corrosion resistant material system
At；Ordinary casing（1）Pass through the first crossover sub（5）With the first anti-corrosion short circuit（6）Connection composition tapered casing string（7）；Commonly
Oil pipe（8）Pass through the second crossover sub（12）With the second anti-corrosion short circuit（13）Connection composition tapered tubing string（14）；Composite bushing
Column（7）And tapered tubing string（14）Between annular space and packer（3）, the first check valve（4）Form first passage（2）,
And packer（3）Positioned at the second anti-corrosion short circuit（13）With the first anti-corrosion short circuit（6）Between, the first check valve（4）Positioned at packer
（3）On；Plain tubing（8）And seal plug（10）, the second check valve（11）Form second channel（9）, and seal plug（10）
Positioned at the second anti-corrosion short circuit（13）Lower end, the second check valve（11）Positioned at seal plug（10）On；First anti-corrosion short circuit
（6）, the second anti-corrosion short circuit（13）, packer（3）, the first check valve（4）, seal plug（10）, the second check valve（11）And
Shaft bottom（17）Form fluid pooling zone（15）.
2. a kind of multi-functional carbon dioxide injection according to claim 1 improves the anti-corrosion method of recovery ratio, which is characterized in that
The anti-corrosion method that the multi-functional carbon dioxide injection improves recovery ratio includes the following steps：
Step 1：Suitable injecting scheme, i.e. CO are determined according to actual condition demand2Gas is continuously injected into, single hop plug injects,
Carbon dioxide and the injection of water alternating, CO2Water injects simultaneously；
Step 2：After determining injecting scheme, by respective sequence to first passage（2）And second channel（9）It is injected separately into CO2With
Water, or to first passage（2）And second channel（9）In be injected separately into water and CO2；
Step 3：Fluid in two channels quantitatively leads in proportion and in an orderly manner according to specific implantation temperature, pressure and flow rates demand
Cross the first check valve（4）With the second check valve（11）To fluid pooling zone（15）Unidirectional injection；
Step 4：CO2Fluid passes through fluid pooling zone（15）It is directly entered oil reservoir（16）, realize CO2The displacement of reservoir oil that gas is continuously injected into
Technique；CO2Gas or liquid slug can pass through fluid pooling zone（15）Into oil reservoir（16）And then CO is realized in water filling afterwards2Fluid
The Drainage process of single hop plug injection；CO2Gas or liquid slug can pass through fluid pooling zone（15）Into oil reservoir（16）After replace
Water filling and CO2Gas realizes CO2The Drainage process that water alternately injects；CO2With water in fluid pooling zone（15）Enter oil after mixed phase
Layer（16）, realize CO2The concurrently injected Drainage process of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298689.9A CN108425663A (en) | 2018-04-04 | 2018-04-04 | A kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298689.9A CN108425663A (en) | 2018-04-04 | 2018-04-04 | A kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio |
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| Publication Number | Publication Date |
|---|---|
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|---|---|---|---|
| CN201810298689.9A Pending CN108425663A (en) | 2018-04-04 | 2018-04-04 | A kind of multi-functional carbon dioxide injection improves the anticorrosion structure and method of recovery ratio |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594110A (en) * | 2020-05-25 | 2020-08-28 | 程雅雯 | Gas-liquid mixed injection device for double-injection dilution of thickened oil |
| CN112324405A (en) * | 2019-08-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Resistance-increasing oil extraction device for improving utilization rate of injected gas and manufacturing method thereof |
| CN113482584A (en) * | 2021-08-23 | 2021-10-08 | 青岛爱派能源科技有限公司 | Circulating CO for oil exploitation2Oil displacement and injection device |
| CN114370255A (en) * | 2020-10-15 | 2022-04-19 | 中国石油天然气股份有限公司 | Corrosion inhibitor injection method |
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| CN107178347A (en) * | 2017-07-03 | 2017-09-19 | 中国石油天然气股份有限公司 | A kind of long-acting CO2Gas injection tube column and operating method |
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| CN102305055A (en) * | 2011-08-10 | 2012-01-04 | 中国石油天然气股份有限公司 | Air foam flooding shaft bottom foaming process pipe column |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324405A (en) * | 2019-08-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Resistance-increasing oil extraction device for improving utilization rate of injected gas and manufacturing method thereof |
| CN112324405B (en) * | 2019-08-05 | 2022-11-04 | 中国石油天然气股份有限公司 | Resistance-increasing oil extraction device for improving utilization rate of injected gas and manufacturing method thereof |
| CN111594110A (en) * | 2020-05-25 | 2020-08-28 | 程雅雯 | Gas-liquid mixed injection device for double-injection dilution of thickened oil |
| CN114370255A (en) * | 2020-10-15 | 2022-04-19 | 中国石油天然气股份有限公司 | Corrosion inhibitor injection method |
| CN114370255B (en) * | 2020-10-15 | 2023-12-22 | 中国石油天然气股份有限公司 | Corrosion inhibitor injection method |
| CN113482584A (en) * | 2021-08-23 | 2021-10-08 | 青岛爱派能源科技有限公司 | Circulating CO for oil exploitation2Oil displacement and injection device |
| CN113482584B (en) * | 2021-08-23 | 2023-06-27 | 青岛爱派能源科技有限公司 | Circulating CO for petroleum exploitation 2 Oil displacement and liquid injection device |
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