CN106640006A - Steam-huff-and-puff oil production method assisted by injection of air and carbon dioxide - Google Patents
Steam-huff-and-puff oil production method assisted by injection of air and carbon dioxide Download PDFInfo
- Publication number
- CN106640006A CN106640006A CN201611243994.5A CN201611243994A CN106640006A CN 106640006 A CN106640006 A CN 106640006A CN 201611243994 A CN201611243994 A CN 201611243994A CN 106640006 A CN106640006 A CN 106640006A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- well
- injection
- air
- oxygen content
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a steam-huff-and-puff oil production method assisted by injection of air and carbon dioxide. The method includes the following steps that (1) an injection well and an adjacent well are arranged, and the oxygen content of casing pipes of the injection well and the adjacent well is measured online; (2) when the online measured oxygen content of the injection well casing pipe is higher than an explosion point, nitrogen and/or carbon dioxide are/is injected into the injection well, and the content of oxygen content of the injection well casing pipe, which is lower than the explosion point, is an injection finishing point; (3) the gas mixture of air and carbon dioxide is injected till the total reaches a design discharge, and after the injection is finished, a carbon dioxide slug killing well is used, and then steam is injected; or a gas mixture slug of air and carbon dioxide is injected, a steam slug is injected, then the gas mixture slug and the steam slug are injected continuously, circularly and alternately till the gas mixture slug injection total reaches the design discharge, and after the circular injection is finished, the carbon dioxide slug killing well is used; (4) the well is soaked till the pressure inside the well reaches a normal pressure, and blowout production is carried out.
Description
Technical field
The present invention relates to a kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, belong to oil exploitation technology neck
Domain.
Background technology
Liaohe Oil Field is the oil field based on viscous crude.As the prolongation in steam soak cycle, formation depletion are increased, yield is passed
Subtract and also accelerate；And stratum water is more also seriously reduces utilization efficiency of heat energy so that development cost increases, exploitation benefit becomes
Difference.Therefore, explore new technology and new exploitation pattern to improve the recovery ratio and oil-gas ratio of viscous crude and super-viscous oil to viscous crude field
Subsequent development become more and more important.
The patent application of Application No. 200910011365.3 discloses a kind of " stratum catalytic oxidation thick oil thermal recovery method ",
The method is during thickened oil steam-stimulated or steam drive, to inject a kind of catalysis with catalysis oxidation and cracking function
Agent, and it is aided with a certain amount of air injection, generation catalysis oxidation and the cracking reaction in stratum during bright well or steam drive,
Crude oil lighting viscosity reduction is made, while the surfactant of energy production improvement crude oil fluidity, so as to reach thickened oil recovery effect is improved
The purpose of fruit.
But the consumption of catalyst is with respect to being considerably less for oil reservoir, and oil reservoir actual conditions nobody is real knows
Road, all of situation is all everybody deduction, and catalyst is very low in the adaptation situation to environment, in being susceptible to rear catalyst
Poison, i.e. catalyst lose catalytic action.And the Main Ingredients and Appearance of catalyst is the salt of transition metal, such transition metal salt
Class is in Liaohe Oilfield Heavy Crude block generally existing.The practice that conventional air injection recovers the oil is that the catalysis of design flow is injected before air injection
Agent, then reinjects the air of design flow, is then poured into the steam of design flow, last opening well and making production.But on steam injection string
Carry and find in operation process part tubing string generation significantly deformation, to rising to deform tubing string crystal phase analysis are made, show that crushed element does not have
Have through high temperature action, the relevant specialty occurrences in human life analyses of Jing, this deformation is caused by the shock wave produced after exploding.This accident
Generation will result in casualties near well head, and to enterprise assets massive losses are brought.And explode occur the reason for be due to
Oxygen content is in the range of explosion limit.
CO_2 stimulation oil recovery technique is aiming at a kind of individual well increasing that the concrete condition of super-viscous oil Simulation on whole pay zones is taken
Product measure.The technology have viscosity reduction, improve oil reservoir energy, strengthen crude oil fluidity and adjustment oil reservoir longitudinal direction steam entry profile,
Improve the effect of oil reservoir vertical producing degree.In the past, due to by carbon dioxide price affected and its main effect be drop
Low Crude viscosity, the larger effect for easily reaching mixed phase drive of its solubility in crude oil, causes its energy increasing function not to be very
Greatly, also just because these factor effects make it receive certain restriction using scale.At present situ combustion technology is in Liaohe Oil-bearing
The big mould application of field Partial Block, plays the important and pivotal role to making full use of for oil reservoir production capacity, and it is big that combustion in situ is produced
Carbon dioxide content is higher in amount tail gas, but has had to the recycling of part, and flap portion is then discharged in air, to ring
Border brings adverse effect.
The content of the invention
In view of the defect that above-mentioned prior art is present, the purpose of the present invention is to propose to air injection and carbon dioxide auxiliary steam
Huff and puff oil recovery method, can realize safety in production, meanwhile, it is capable to improve the recovery ratio of crude oil using air, carbon dioxide, that is, have
Beneficial to crude oil volume increase, while and reducing carbon dioxide to environmentally undesirable impact.
The purpose of the present invention is achieved by the following technical programs：
A kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, comprise the steps：
Step one, the casing gas oxygen content that note product well and adjacent well, on-line determination note product well and adjacent well are set；
Step 2, on-line determination note produce well casing gas oxygen content (the on-line prediction of operation starting point starts before operation
First test oxygen content) higher than demolition point when, to note produce well in nitrogen injection and/or carbon dioxide, and with note produce well set
Pipe gas oxygen content is less than demolition point as injection terminal；On-line determination note produce well casing gas oxygen content (operation starting point
Line predict, that is, start first to test oxygen content before operation) less than demolition point when, this step omit；
The gaseous mixture of step 3, injection air and carbon dioxide injects till total amount reaches design flow in gaseous mixture
After end, using carbon dioxide slug kill-job, followed by injection steam；Or,
The gaseous mixture slug of injection air and carbon dioxide, is then poured into steam slug, then the injection of continuous cycle alternation is mixed
Gas slug and steam slug are closed, till gaseous mixture slug total injection reaches design flow, after circulation injection terminates, is used
Carbon dioxide slug kill-job；
Step 4, stewing well is until borehole pressure reaches regular pressure, open flow production；
Wherein, the casing gas oxygen content of on-line determination adjacent well is used to be carried out with the casing gas oxygen content of itself well before gas injection
Contrast, judges its whether has channeling；The casing gas oxygen content for has channeling and/or on-line determination note product well occur then is defined higher than demolition point
For danger early warning；；
The gaseous mixture total amount of air and carbon dioxide is 100 with the mass ratio of steam total amount: (0.5-1.5).
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, the casing gas of on-line determination adjacent well contain
Oxygen amount is used to be contrasted with the casing gas oxygen content of itself well before gas injection, judge its whether has channeling be this area conventional method
Carry out；There is has channeling, show that oxygen content itself is too high, fall within the item of danger early warning.When there is has channeling, it is may also take on
His measure, for example, add profile control agent to block etc..
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, design flow refers to air and carbon dioxide
Gaseous mixture total amount, its mass ratio with steam total amount is 100: (0.5-1.5)；That is design flow depends on the steaming of injection
Vapour amount.And the consumption of steam is determined by on-site actual situations, on-the-spot meeting makes again increase and decrease amount, such as strata pressure according to actual conditions
Relatively low, then the amount injected will increase, and sometimes pressure height, note do not enter and may note less, the serious oil well of has channeling between well
Will less inject or take many wells to inject with the mode of note.That is the gaseous mixture of air and carbon dioxide is actually needed according to scene
Depending on.Likewise, the consumption of kill-job carbon dioxide is also actually needed determination by empirical value, by scene, it is standard practice, according to
It is high just to note some more and told with preventing from injecting gas returning according to being exactly to inject pressure height according to pit shaft, and then enter fuel gas
Enter pit shaft.Preferably, the total amount of steam is about 1500 mark sides；The total amount of nitrogen injection and/or carbon dioxide is 400-600
Mark side；Kill-job carbon dioxide 400-600 mark sides.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, the gaseous mixture section of air and carbon dioxide
The slug consumption of plug and the slug consumption of steam slug are referred to routine.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, step 2 injects dioxy in injection well
Change carbon and/or nitrogen, fuel gas in pit shaft is pressed into stratum, to prevent explosive incident from occurring.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that injection air and titanium dioxide
During the gaseous mixture of carbon, temperature of the control gaseous mixture at ground well head is more than frost point.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, the mixing of air and carbon dioxide is injected
During gas, air pressure pump note is carried out using air compressor, need the temperature for controlling air compressor outlet side at different levels, make sky
The temperature control of the compressed air of the discharge of air compressor end is between 50-65 DEG C, then the carbon dioxide pumped out with compression enters
Row mixing, and then the gaseous mixture of air and carbon dioxide is made in ground well head frost-free；
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that air and carbon dioxide
In gaseous mixture, air is not higher than 1 with the volume ratio of carbon dioxide：0.75.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that the method is additionally included in note
Enter the step of eliminating water is dried to the gaseous mixture of air and carbon dioxide before the gaseous mixture of air and carbon dioxide.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that note is set and produces well and adjacent
The step of well includes centered on noting and produce well, between same oil reservoir adjacent well as radius, respectively with one times of well spacing, two times of well spacings, three
Offset well around is divided into a line adjacent well, two wires adjacent well, three line adjacent wells by times well spacing.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that the adjacent well is used to adopt
Oil and/or occur discharging strata pressure during danger early warning.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, the adjacent well can also collect oil reservoir
The carbon dioxide for discharging.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that the method be additionally included in into
Row step one to during step 4, there is midway and shut down when, the step of well is produced to note first carrying out oxygen content and determine, when oxygen-containing
When amount is more than demolition point, first injecting carbon dioxide is reduced to oxygen content below demolition point.
In above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, it is preferred that when there is danger early warning,
Gas injection section, increases the content of the carbon dioxide produced to note in the gaseous mixture injected in well；Or,
In the production phase, casing gas (accompanying gas) oxygen content that note produces well is detected, when oxygen content is higher than blast
During point, produce injecting carbon dioxide in well to note and oxygen content is reduced to below demolition point.
The present invention also provides the note that a kind of above-mentioned air injection and carbon dioxide auxiliary steam huff and puff oil recovery method are used
Enter device, the device includes air-source, carbon dioxide air source, drier, injection pump and blender；
The blender is a pressure vessel with cavity, the initiating terminal of the blender be respectively arranged with air intake and
Carbon dioxide entrance, the end of the blender is blender outlet, and the blender outlet is connected with oil pipe；
Cross one another projection is provided with the cavity of the blender；
The air intake of the air-source, drier and blender is sequentially communicated；
The carbon dioxide entrance of the carbon dioxide air source, injection pump and blender UNICOM successively.
In above-mentioned injection device, it is preferred that the air-source includes air compressor.
In above-mentioned injection device, it is preferred that the carbon dioxide air source includes carbon dioxide storage tank.
In above-mentioned injection device, the blender that cross one another projection is provided with cavity enables to air and dioxy
Change carbon gas mixing more uniform.
In above-mentioned injection device, it is preferred that the injection device include well first-class control valve, first flowmeter, the
Two flow control valves and second flowmeter；
The first-class control valve and first flowmeter are arranged between the drier and the air intake of blender；
The second control valve and second flowmeter are arranged on the carbon dioxide entrance of the injection pump and blender
Between.
The present invention prominent effect be：
The air injection and carbon dioxide auxiliary steam huff and puff oil recovery method of the present invention, can make air injection process reach essence
Safety, while and can reduce during carbon dioxide injection to the cold damage of oil reservoir, the production requirement of i.e. safety and environmental protection is reached,
Reduce the link that catalyst is added during air injection again simultaneously, improve the production time efficiency of oil well；Can also using air,
Carbon dioxide improves the recovery ratio of crude oil, is both requiring supplementation with stratum energy, and the block for reducing oil reservoir Central Plains oil viscosity is needed again,
Can also be produced using group's method of gas injection in the preferable block of combination of zones；Meanwhile, that is, be conducive to crude oil to increase production, together
When again reduce carbon dioxide on environmentally undesirable impact.
Description of the drawings
Fig. 1 is the structural representation of the injection device of the embodiment of the present invention.
Specific embodiment
Hereinafter just accompanying drawing in conjunction with the embodiments, is described in further detail, so that of the invention to the specific embodiment of the present invention
Technical scheme is more readily understood, grasps.
Embodiment
The present embodiment provides a kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, comprises the steps：
Step one, setting note produce well and adjacent well：Centered on noting and produce well, as radius, to distinguish between same oil reservoir adjacent well
Offset well around is divided into a line adjacent well, two wires adjacent well, three line adjacent wells with one times of well spacing, two times of well spacings, three times well spacings；
On-line determination note produces the casing gas oxygen content of well and adjacent well；
It is higher than demolition point that step 2, on-line determination note produce the casing gas oxygen content of well, and to note injecting carbon dioxide in well is produced
(can also be the mixed gas of nitrogen or carbon dioxide and nitrogen), and to note the casing gas oxygen content for producing well less than blast
Point is used as injecting terminal, and in the present embodiment, 400-600 mark Fang Junke (inject here) in the side of marking of injecting carbon dioxide 400；
The gaseous mixture of step 3, injection air and carbon dioxide injects till total amount reaches design flow in gaseous mixture
After end, using carbon dioxide slug kill-job, followed by injection steam；Or,
The gaseous mixture slug of injection air and carbon dioxide, is then poured into steam slug, then the injection of continuous cycle alternation is mixed
Gas slug and steam slug are closed, till gaseous mixture slug total injection reaches design flow, after circulation injection terminates, is used
Carbon dioxide slug kill-job (mixed gas that will be in pit shaft carry out being pressed into oil reservoir)；
In the present embodiment, it is 100: 1 to inject air and the gaseous mixture total amount of carbon dioxide with the mass ratio of steam total amount, section
The amount of plug can be controlled arbitrarily, and the total amount for injecting steam is 1500 mark sides；The side's kill-job of injecting carbon dioxide 400 (is injected here
400-600 marks Fang Junke)；
Step 4, stewing well reaches regular pressure up to borehole pressure, and open flow production, open flow measures oxygen in accompanying gas simultaneously
Gas content.
Meanwhile, the casing gas oxygen content of on-line determination adjacent well is used to be carried out with the casing gas oxygen content of itself well before gas injection
Contrast, judges its whether has channeling；The casing gas oxygen content for has channeling and/or on-line determination note product well occur then is defined higher than demolition point
For danger early warning；If there is danger early warning, in gas injection section, increase the carbon dioxide produced to note in the gaseous mixture injected in well
Content；In the production phase, the casing gas oxygen content that note produces well is detected, when oxygen content is higher than demolition point, produced to note
Injecting carbon dioxide is reduced to oxygen content below demolition point in well.If generation midway is shut down, note product well is first carried out oxygen-containing
Fixed step is measured, when oxygen content is higher than demolition point, first injecting carbon dioxide is reduced to oxygen content below demolition point；Occur
The situation of has channeling can also be blocked by injection profile agent.
During the gaseous mixture of air and carbon dioxide is controlled in the present embodiment, air is not higher than 1 with the volume ratio of carbon dioxide：
0.75, temperature of the control gaseous mixture at ground well head is more than frost point.
In the present embodiment, air have passed through dried process with the gaseous mixture of carbon dioxide before injection, it is to avoid injection process
In corrosiveness to sleeve pipe.
The air injection and carbon dioxide auxiliary steam huff and puff oil recovery method of the present embodiment is realized by following devices, such as
Shown in Fig. 1, the device includes air-source 1, carbon dioxide air source 5, drier 2, injection pump 6, the control of blender 12, first flow
(setting of control valve and flowmeter makes air and dioxy for valve 3, first flowmeter 4, second control valve 7 and second flowmeter 8
The volume ratio for changing carbon reaches requirement)；
The blender 12 is a pressure vessel with cavity, and the initiating terminal of the blender 12 is respectively arranged with air and enters
Mouth 9 and carbon dioxide entrance 10, the end of the blender 12 is blender outlet 11, and the blender exports 11 and oil pipe phase
Connection；
Cross one another projection is provided with the cavity of the blender 12, and (its Main Function is by air and carbon dioxide
Uniform mixing, makes the oxygen content in mixed gas control in the range of safety value)；
The air intake 9 of the air-source 1, drier 2 and blender 12 is sequentially communicated；
The carbon dioxide entrance 10 of the carbon dioxide air source 5, injection pump 6 and blender 12 UNICOM successively；
The first-class control valve 3 and the meter of first flow 4 are arranged on the air intake of the drier 2 and blender 12
Between 9；
The second control valve 7 and second flowmeter 8 are arranged on the carbon dioxide of the injection pump 6 and blender 12
Between entrance 10；
In the present embodiment, the air-source is air compressor；The carbon dioxide air source is carbon dioxide storage tank.
As fully visible, the air injection of the present embodiment and carbon dioxide auxiliary steam huff and puff oil recovery method, can make air injection
Process reaches essential safety, while and can reduce during carbon dioxide injection to the cold damage of oil reservoir, reach i.e. safety and ring
The production requirement of guarantor, while and reduce the link that catalyst is added during air injection, improve the production time efficiency of oil well；Also
Air, carbon dioxide can be utilized to improve the recovery ratio of crude oil, both requiring supplementation with stratum energy, need to reduce oil reservoir Central Plains again
The block of oil viscosity, can also be produced in the preferable block of combination of zones using group's method of gas injection；Meanwhile, i.e., favorably
In crude oil volume increase, while and reducing carbon dioxide to environmentally undesirable impact.
Claims (10)
1. a kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method, comprise the steps：
Step one, the casing gas oxygen content that note product well and adjacent well, on-line determination note product well and adjacent well are set；
When step 2, on-line determination note produce the casing gas oxygen content of well higher than demolition point, to note nitrogen injection and/or two in well is produced
Carbon oxide gas, and to note the casing gas oxygen content for producing well less than demolition point as injection terminal；On-line determination note produces the set of well
When pipe gas oxygen content is less than demolition point, this step is omitted；
The gaseous mixture of step 3, injection air and carbon dioxide terminates till total amount reaches design flow in gaseous mixture injection
Afterwards, using carbon dioxide slug kill-job, followed by injection steam；Or,
The gaseous mixture slug of injection air and carbon dioxide, is then poured into steam slug, then continuous cycle alternation injection gaseous mixture
Slug and steam slug, till gaseous mixture slug total injection reaches design flow, after circulation injection terminates, using dioxy
Change carbon slug kill-job；
Step 4, stewing well is until borehole pressure reaches regular pressure, open flow production；
Wherein, the casing gas oxygen content of on-line determination adjacent well be used for gas injection before itself well casing gas oxygen content carry out it is right
Than judging its whether has channeling；The casing gas oxygen content for has channeling and/or on-line determination note product well occur then is defined as higher than demolition point
Danger early warning；
The gaseous mixture total amount of air and carbon dioxide is 100 with the mass ratio of steam total amount: (0.5-1.5).
2. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：Injection
During the gaseous mixture of air and carbon dioxide, temperature of the control gaseous mixture at well head is more than frost point.
3. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：Air
And in the gaseous mixture of carbon dioxide, air is not higher than 1 with the volume ratio of carbon dioxide：0.75.
4. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：The party
Method is additionally included in before the gaseous mixture of injection air and carbon dioxide and is dried eliminating water to the gaseous mixture of air and carbon dioxide
Step.
5. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：Arrange
Note produces well and includes the step of adjacent well centered on noting and produce well, between same oil reservoir adjacent well as radius, respectively with one times of well spacing,
Offset well around is divided into a line adjacent well, two wires adjacent well, three line adjacent wells by two times of well spacings, three times well spacings.
6. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：It is described
Adjacent well is used to recover the oil and/or occur discharging strata pressure during danger early warning.
7. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：The party
Method be additionally included in carry out step one to during step 4, there is midway and shut down when, producing well to note first carries out oxygen content measure
The step of, when oxygen content is higher than demolition point, first injecting carbon dioxide is reduced to oxygen content below demolition point.
8. air injection according to claim 1 and carbon dioxide auxiliary steam huff and puff oil recovery method, it is characterised in that：Occur
During danger early warning, in gas injection section, increase the content of the carbon dioxide produced to note in the gaseous mixture injected in well；Or,
In the production phase, the casing gas oxygen content that note produces well is detected, when oxygen content is higher than demolition point, produced in well to note
Injecting carbon dioxide is reduced to oxygen content below demolition point.
9. what air injection and carbon dioxide auxiliary steam huff and puff oil recovery method described in a kind of any one of claim 1-8 was used
Injection device, the device includes air-source, carbon dioxide air source, drier, injection pump and blender；
The blender is a pressure vessel with cavity, and the initiating terminal of the blender is respectively arranged with air intake and dioxy
Change carbon entrance, the end of the blender is blender outlet, and the blender outlet is connected with oil pipe；
Cross one another projection is provided with the cavity of the blender；
The air intake of the air-source, drier and blender is sequentially communicated；
The carbon dioxide entrance of the carbon dioxide air source, injection pump and blender UNICOM successively；
Preferably, the air-source includes air compressor；
Preferably, the carbon dioxide air source includes carbon dioxide storage tank.
10. injection device according to claim 9, it is characterised in that：The injection device well include first-class control valve,
First flowmeter, second control valve and second flowmeter；
The first-class control valve and first flowmeter are arranged between the drier and the air intake of blender；
The second control valve and second flowmeter are arranged between the injection pump and the carbon dioxide entrance of blender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243994.5A CN106640006B (en) | 2016-12-29 | 2016-12-29 | A kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243994.5A CN106640006B (en) | 2016-12-29 | 2016-12-29 | A kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640006A true CN106640006A (en) | 2017-05-10 |
| CN106640006B CN106640006B (en) | 2019-04-09 |
Family
ID=58835692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243994.5A Active CN106640006B (en) | 2016-12-29 | 2016-12-29 | A kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640006B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397171A (en) * | 2018-02-02 | 2018-08-14 | 中国石油大学(华东) | A kind of nitrogen auxiliary carbon dioxide is handled up the method for the fine and close oil of exploitation |
| CN108487883A (en) * | 2017-10-12 | 2018-09-04 | 天翊科技有限公司 | A kind of technique using natural gas and the carbon dioxide mix displacement of reservoir oil |
| CN108590600A (en) * | 2018-04-26 | 2018-09-28 | 中国石油天然气股份有限公司 | A kind of CO2Drive the optimum design method of injection-production well well killing system |
| CN110847867A (en) * | 2019-12-12 | 2020-02-28 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
| CN115199243A (en) * | 2022-06-09 | 2022-10-18 | 中国石油大学(华东) | Tight oil reservoir is opened and is adopted aqueous vapor gas injection device in turn |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004132A (en) * | 2007-01-04 | 2007-07-25 | 中国石油大学(华东) | Exploitation technique for disgorging thick oil by pouring air to assistant steam |
| US20090178806A1 (en) * | 2008-01-11 | 2009-07-16 | Michael Fraim | Combined miscible drive for heavy oil production |
| CN202441350U (en) * | 2012-01-16 | 2012-09-19 | 中国石油天然气股份有限公司 | Tubular column for catalytic oxidation oil production by injecting air and steam into selected reservoir |
| CN103556978A (en) * | 2013-10-19 | 2014-02-05 | 盘锦道博尔石油新技术开发有限公司 | Diversified carbon-dioxide flooding oil extraction method |
| RU2514078C2 (en) * | 2011-03-03 | 2014-04-27 | Галадигма ЛЛС | Method of development of depleted deposits of natural hydrocarbons |
| CN104314542A (en) * | 2014-09-24 | 2015-01-28 | 中国石油天然气股份有限公司 | Air injection-assisted steam oil recovery tube pillar and oil recovery method |
| CN104314532A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Mining method for heavy oil reservoir and well network thereof |
| CN104863557A (en) * | 2015-05-21 | 2015-08-26 | 中国石油大学(华东) | Experimental device and method of super heavy oil reservoir steam-nitrogen-viscosity reducer composite steam stimulation |
| CN105041275A (en) * | 2015-06-30 | 2015-11-11 | 西南石油大学 | Oil extraction method for reducing oxygen concentration of associated gas of production well by injecting oxygen reduction air |
| CN106089164A (en) * | 2016-08-01 | 2016-11-09 | 中嵘能源科技集团有限公司 | A kind of air-injection displacement method of straight well air injection horizontal well production |
-
2016
- 2016-12-29 CN CN201611243994.5A patent/CN106640006B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004132A (en) * | 2007-01-04 | 2007-07-25 | 中国石油大学(华东) | Exploitation technique for disgorging thick oil by pouring air to assistant steam |
| US20090178806A1 (en) * | 2008-01-11 | 2009-07-16 | Michael Fraim | Combined miscible drive for heavy oil production |
| RU2514078C2 (en) * | 2011-03-03 | 2014-04-27 | Галадигма ЛЛС | Method of development of depleted deposits of natural hydrocarbons |
| CN202441350U (en) * | 2012-01-16 | 2012-09-19 | 中国石油天然气股份有限公司 | Tubular column for catalytic oxidation oil production by injecting air and steam into selected reservoir |
| CN103556978A (en) * | 2013-10-19 | 2014-02-05 | 盘锦道博尔石油新技术开发有限公司 | Diversified carbon-dioxide flooding oil extraction method |
| CN104314542A (en) * | 2014-09-24 | 2015-01-28 | 中国石油天然气股份有限公司 | Air injection-assisted steam oil recovery tube pillar and oil recovery method |
| CN104314532A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Mining method for heavy oil reservoir and well network thereof |
| CN104863557A (en) * | 2015-05-21 | 2015-08-26 | 中国石油大学(华东) | Experimental device and method of super heavy oil reservoir steam-nitrogen-viscosity reducer composite steam stimulation |
| CN105041275A (en) * | 2015-06-30 | 2015-11-11 | 西南石油大学 | Oil extraction method for reducing oxygen concentration of associated gas of production well by injecting oxygen reduction air |
| CN106089164A (en) * | 2016-08-01 | 2016-11-09 | 中嵘能源科技集团有限公司 | A kind of air-injection displacement method of straight well air injection horizontal well production |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487883A (en) * | 2017-10-12 | 2018-09-04 | 天翊科技有限公司 | A kind of technique using natural gas and the carbon dioxide mix displacement of reservoir oil |
| CN108397171A (en) * | 2018-02-02 | 2018-08-14 | 中国石油大学(华东) | A kind of nitrogen auxiliary carbon dioxide is handled up the method for the fine and close oil of exploitation |
| CN108590600A (en) * | 2018-04-26 | 2018-09-28 | 中国石油天然气股份有限公司 | A kind of CO2Drive the optimum design method of injection-production well well killing system |
| CN108590600B (en) * | 2018-04-26 | 2020-10-02 | 中国石油天然气股份有限公司 | CO (carbon monoxide)2Optimization design method of well killing system of flooding injection and production well |
| CN110847867A (en) * | 2019-12-12 | 2020-02-28 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
| CN110847867B (en) * | 2019-12-12 | 2020-08-25 | 西南石油大学 | Gas injection displacement injection point selection method for tight oil reservoir |
| CN115199243A (en) * | 2022-06-09 | 2022-10-18 | 中国石油大学(华东) | Tight oil reservoir is opened and is adopted aqueous vapor gas injection device in turn |
| CN115199243B (en) * | 2022-06-09 | 2023-09-22 | 中国石油大学(华东) | Water-gas alternate gas injection device for dense oil reservoir exploitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640006B (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106640006B (en) | A kind of air injection and carbon dioxide auxiliary steam huff and puff oil recovery method | |
| RU2731428C1 (en) | Method of gas production by alternate use of multi-stage cracking of coal massif during combustion with formation of shock wave and heat-carrier injection | |
| CN112523735B (en) | Fracturing method for shale reservoir transformation | |
| He et al. | Oil well perforation technology: Status and prospects | |
| CN109707360B (en) | A kind of compound fracturing method of high pressure nitrogen-low temperature liquid nitrogen for frscturing | |
| CN101016835B (en) | Thermal production well filling vapor and nitrogen foam profile control technique | |
| CN110029976B (en) | Hot nitrogen-assisted heavy oil reservoir steam huff-puff oil production system and method | |
| Kumar et al. | Case history and appraisal of the Medicine Pole Hills unit air-injection project | |
| CN103352684B (en) | Chemical Physics compound explosion fracturing equipment and manufacture method thereof | |
| CN101089362B (en) | Improved steam oil production method | |
| CN102080524B (en) | Layered electric ignition method for multilayer gas injection of fire flood | |
| CN101004132A (en) | Exploitation technique for disgorging thick oil by pouring air to assistant steam | |
| CN105507858A (en) | Immiscible gas injection and oil replacement type exploitation method for ultra-deep fractured-vuggy carbonate reservoirs | |
| CN110359899A (en) | A kind of method that shale gas horizontal well refracturing improves effectively transformation volume | |
| CN105370256A (en) | Method for increasing wetting radius of high-pressure water injection of low-air-permeability coal seams through sectioned pre-splitting | |
| CN109488272A (en) | Hot dry rock vertical well cuts fracturing process | |
| CN105178931B (en) | A kind of method that speed is produced on raising SAGD initial stages | |
| CN104265258A (en) | Fracture-assisted combustion of oil in-situ stimulation thickened oil exploiting method | |
| CN113743037B (en) | Method for calculating water injection induced dynamic fracture change diversion capacity of low-permeability oil reservoir | |
| CN102392623A (en) | Air-drive oil production method for low-permeability reservoir | |
| CN106050200A (en) | Method for injecting high-pressure air into low-permeability reservoir to perform oxidative pyrolysis and displacement of oil | |
| CN106050214A (en) | Exploitation method of combustible ice | |
| CN108166962A (en) | A kind of communication method of fire flood air injection well and oil recovery producing well | |
| CN104389569A (en) | Steam huff and puff exploitation method | |
| CN113743036B (en) | Low permeability-tight reservoir water injection induced dynamic fracture strip model calculation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |