CN110485974A - A kind of Profile Control in Injection Well method - Google Patents
A kind of Profile Control in Injection Well method Download PDFInfo
- Publication number
- CN110485974A CN110485974A CN201910319142.7A CN201910319142A CN110485974A CN 110485974 A CN110485974 A CN 110485974A CN 201910319142 A CN201910319142 A CN 201910319142A CN 110485974 A CN110485974 A CN 110485974A
- Authority
- CN
- China
- Prior art keywords
- injection well
- oil reservoir
- profile control
- protein microbeads
- oil
- 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.)
- Pending
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
-
- 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
- E21B43/20—Displacing by water
Abstract
The invention discloses a kind of Profile Control in Injection Well methods, belong to oil-gas field development technical field.The Profile Control in Injection Well method includes: to inject the solution containing protein microbeads from water injection well to oil reservoir, injects the protein microbeads of set amount and then injects water to oil reservoir.Profile Control in Injection Well method provided in an embodiment of the present invention, by injecting the solution containing protein microbeads from water injection well to oil reservoir, after making protein microbeads macropore plugging, water is injected to oil reservoir again, so as to drive the oil droplet in small duct to migrate in producing well, the flood effectiveness of oil reservoir is hence improved, oil recovery factor is improved.Profile Control in Injection Well method management is simple, low in cost, safe and practical, can avoid or forms waterflood path when reducing waterflooding extraction and cause reservoir water flooding or water filling fingering, can effectively improve the recovery ratio of oil reservoir Crude Oil.In addition, the protein microbeads that this method is injected are degradable, any pollution or harm will not be caused to oil reservoir environment.
Description
Technical field
The present invention relates to oil-gas field development technical field, in particular to a kind of Profile Control in Injection Well method.
Background technique
In oil field development, with the decline of oil layer energy, capacity of oilwell is also constantly being reduced, in order to restore oil
Well production has been gradually formed to fill the water the waterflooding extraction mode for increasing oil layer energy.And in waterflooding extraction, oil is swept in order to increase
Area improves oil recovery factor, generallys use the method for profile control to improve flood effectiveness.So-called " profile control ", which refers to, passes through water injection well
Adjust the intake profile of oil reservoir.
In the prior art, generalling use profile control method includes following four, however, correspondingly there will be one in these methods
A little problems.
1, pulse water flooding profile control --- pulse mode is used, causes to agitate to oil-bearing stratum flooding by water injection well, not employing
Oil employ and come, avoid or reduce water filling fingering.This method management difficulty is big, and effect is unobvious.
2, intermittent water flooding profile control --- by water injection well to oil-bearing stratum flooding, interval certain time, so that oil-reservoir water is naturally heavy
New point of ease, then recover the oil.This method is unobvious to oil recovery factor effect is improved.
3, polymer injection profile control --- when by water injection well to oil-bearing stratum flooding, to water in add polymer, it is viscous to increase water filling
Degree is reduced with differences in viscosity oily in oil reservoir, the method for improving oil recovery factor.This method is at high cost, and to later period water-oil separating
Processing increases difficulty, while will also result in adverse effect to stratum.
4, injection gas displacement profile control --- nitrogen is separated from air by high pressure technique, then by nitrogen from water filling
Well injects oil reservoir, drives crude oil from oil well produced method with nitrogen.The method is at high cost, and effect is unobvious, and there are security risks.
Summary of the invention
The embodiment of the invention provides a kind of Profile Control in Injection Well methods, can solve the above problems.
Specifically, including technical solution below:
A kind of Profile Control in Injection Well method is provided, the Profile Control in Injection Well method includes:
From water injection well to oil reservoir inject the solution containing protein microbeads, inject set amount the protein microbeads it
Afterwards, then to the oil reservoir water is injected.
In a kind of possible embodiment, the partial size of the protein microbeads is the 0.8- of the average pore size of the oil reservoir
1.2 again.
In a kind of possible embodiment, the protein microbeads are phytoprotein particle.
In a kind of possible embodiment, the phytoprotein particle includes soybean protein particle.
In a kind of possible embodiment, the solution containing protein microbeads include by the protein microbeads with
Water is formed by solution after mixing.
In a kind of possible embodiment, the solution containing protein microbeads include by the protein microbeads with
Polymer dilution liquid is formed by solution after mixing.
In a kind of possible embodiment, the concentration of the polymer dilution liquid is 0.2%-1%.
In a kind of possible embodiment, the mass ratio of the protein microbeads and the polymer dilution liquid are as follows:
(0.5-5): 100.
In a kind of possible embodiment, the polymer dilution liquid is polyacrylamide dilution.
In a kind of possible embodiment, the calculation formula of the set amount of the protein microbeads is as follows:
W=π (r+5)2·d·Φ·k·ρ
Wherein, W is the set amount；R is the radius of the water injection well；D is the thickness of the oil reservoir；Φ is the oil reservoir
Porosity；Constant of the k between [15%-25%]；ρ is the density of the protein microbeads.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least:
Profile Control in Injection Well method provided in an embodiment of the present invention, by containing protein microbeads from water injection well to oil reservoir injection
Solution, make protein microbeads macropore plugging and then to oil reservoir inject water, so as to drive the oil droplet in small duct to migrate
Into producing well, the flood effectiveness of oil reservoir is hence improved, oil recovery factor is improved.Profile Control in Injection Well method management letter
It is single, low in cost, safe and practical, it can avoid or form waterflood path when reducing waterflooding extraction and reservoir water flooding or water filling is caused to refer to
Into the recovery ratio of oil reservoir Crude Oil can be effectively improved.In addition, the protein microbeads that this method is injected are degradable, it will not be right
Oil reservoir environment causes any pollution or harm.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic diagram of the water injection profile before unimplanted protein microbeads provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the water injection profile after injection protein microbeads provided in an embodiment of the present invention.
Appended drawing reference in figure respectively indicates:
1- water injection well；
2- producing well；
3- oil reservoir；
4- macropore entrance；
5- macropore；
The outlet of 6- macropore；
The small duct entrance of 7-；
The small duct 8-；
The outlet of 9- aperture road；
10- oil droplet；
11- protein microbeads.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have and art technology
The normally understood identical meaning of personnel.
It should be noted that selecting an injection-production well group (water injection well 1 and oil recovery first when adjusting water injection profile operation
Well 2).As shown in Figure 1, the intake profile for the oil reservoir 3 that injection-production well group is developed be it is non-uniform, there is the height with macropore 5
Permeable formation and less permeable layer with small duct 8.In common the injecting process, the water injected from water injection well 1 enters oil reservoir 3,
And enter macropore 5 through macropore entrance 4, then enter producing well 2 through macropore outlet 6.Due to macropore 5 and small duct 8
Permeability it is different, the water injected is easy to form waterflood path in oil reservoir 3, and cannot be introduced into small duct 8, and then can not drive
Oil droplet 10 in small duct 8 enters producing well 2, it is difficult to improve oil recovery factor.
The embodiment of the invention provides a kind of Profile Control in Injection Well methods, as shown in Fig. 2, the Profile Control in Injection Well method includes:
From water injection well 1 to oil reservoir 3 inject the solution containing protein microbeads 11, inject set amount protein microbeads it
Afterwards, then to oil reservoir 3 water is injected.
In application, as shown in Fig. 2, the solution that pressure handlebar contains protein microbeads 11, which can be used, squeezes into oil from water injection well 1
In layer 3, due to the inhomogeneity of oil reservoir 3, during squeezing into oil reservoir 3, protein microbeads 11 progress into and block oil reservoir 3
In macropore 5 (avoiding the formation of waterflood path)；It squeezes into certain set amount and then injects water from water injection well 1 to oil reservoir 3, this
When due to protein microbeads 11 block oil reservoir 3 in macropore 5 effect, water filling trend from water injection well 1 enter oil reservoir 3 after, quilt
Compel to enter the small duct 8 in oil reservoir 3 from small duct entrance 7, forces the oil droplet 10 not yet employed stored in small duct 8, infusing
The lower beginning of pressure effect for entering water is migrated to low 2 direction of producing well of pressure, is entered producing well 2 by aperture road outlet 9, is formed newly
Note adopt channel, thus increase sweep pasta product, improve the recovery ratio of 3 Crude Oil of oil reservoir.
Wherein, protein microbeads 11 are degradable biological albumen, in the alkaline environment of oil reservoir 3, alkaline matter conduct
Catalyst, protein microbeads 11 can constantly be degraded, and reaction equation can be with are as follows:
Protein → amino acid+polypeptide+carbon dioxide+urea etc., the substance after degradation is water-soluble substance, centainly
After period, protein microbeads 11 will be dissolved disappearance in oil reservoir 3.
Profile Control in Injection Well method provided in an embodiment of the present invention, it is micro- containing protein by being injected from water injection well 1 to oil reservoir 3
The solution of grain 11 makes 11 macropore plugging 5 of protein microbeads and then injects water to oil reservoir 3, so as to drive in small duct 8
Oil droplet 10 migrate in producing well 2, hence improve the flood effectiveness of oil reservoir 3, improve oil recovery factor.The water injection well tune
It is simple, low in cost, safe and practical to cut open method management, can avoid or forms waterflood path when reducing waterflooding extraction and causes oil reservoir
Water logging or water filling fingering, can effectively improve the recovery ratio of 3 Crude Oil of oil reservoir.In addition, the protein microbeads that this method is injected
It is degradable, any pollution or harm will not be caused to oil reservoir environment.
Protein microbeads 11 are a kind of protein with certain partial size.In above-mentioned Profile Control in Injection Well method, due to
The macropore 5 in oil reservoir 3 developed in different injection-production well groups it is of different sizes, in order to realize protein microbeads 11 to macropore
The plugging effect in road 5 can select the protein microbeads 11 with suitable particle diameter according to the porosity size of oil reservoir 3.
Illustratively, 0.8-1.2 times of the average pore size of the partial size oil reservoir 3 of protein microbeads 11 can be made.
Wherein, the average pore size of oil reservoir 3 can be obtained by the oil field means of production, on this basis, can prepare protein microbeads
11。
In above-mentioned Profile Control in Injection Well method, protein microbeads 11 can be phytoprotein particle, or dynamic
Object protein microbeads.Preferably, phytoprotein particle can be used, phytoprotein particle has certain toughness skeleton, In
Alkaline aqueous environment degradation speed is moderate, and cheap, and the market supply is sufficient.
Illustratively, phytoprotein particle may include soybean protein particle, rice protein particle, wheat gluten particle etc.
Deng.Preferably, soybean protein particle can be used, compared to rice and wheat, the protein content of soybean is high, and particle is less soluble
Solution deformation, has preferable toughness skeleton, can play good oil reservoir and temporarily block up effect.
In above-mentioned Profile Control in Injection Well method, " solution containing protein microbeads 11 is squeezed into oil reservoir 3 from water injection well 1
In " can be regarded as by carrying liquid squeezing into protein microbeads 11 in oil reservoir 3, protein microbeads 11 and carrying liquid can form precipitating
The blocking agent of type, gel-type, gel-type, colloidal dispersions figure.The applicable solution containing protein microbeads 11 is shown below
Example explanation:
In a kind of possible embodiment, should solution containing protein microbeads 11 may include by protein microbeads 11 with
Water is formed by solution after mixing.
It is used as using water and carries liquid, it is low in cost, and can avoid that oil reservoir environment is polluted or endangered.
In alternatively possible embodiment, being somebody's turn to do the solution containing protein microbeads 11 may include by protein microbeads 11
It is formed by solution after mixing with polymer dilution liquid.
Using polymer dilution liquid as liquid is carried, mixed solution can be made to form the blocking agent of colloidal dispersions figure, it can
Increase water filling viscosity, further increases oil recovery factor.
It should be noted that, although using polymer dilution liquid increase by one can be handled to later period water-oil separating as liquid is carried
Determine difficulty, but compared with existing polymer injection profile control method, the amount of polymer dilution liquid used by the embodiment of the present invention
Very limited, the influence to later period water-oil separating processing is relatively small, can be neglected.
In above-mentioned Profile Control in Injection Well method, polymer dilution liquid is preferably taken as liquid is carried in order to make it have
Band effect can make the concentration 0.2%-1% of polymer dilution liquid, be specifically as follows in a kind of possible embodiment
0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1% etc..
In above-mentioned Profile Control in Injection Well method, protein microbeads 11 are mixed with polymer dilution liquid, and formation contains albumen
The carrying liquid of matter particle 11.For the purposes of guaranteeing that there is the preferable effect that carries can make in a kind of possible embodiment for it
The mass ratio of protein microbeads 11 and polymer dilution liquid are as follows: (0.5-5): 100, that is to say, that with the matter of polymer dilution liquid
Amount is 100 parts of calculating, can make 0.5-5 parts of quality of the protein microbeads 11 incorporated.
In above-mentioned Profile Control in Injection Well method, which can be poly- for polyacrylamide dilution, xanthan gum
Close object dilution.Preferably, polyacrylamide dilution can be used, polyacrylamide dilution has preferable thickening property and glues
Conjunction property.
In above-mentioned Profile Control in Injection Well method, injected first into oil reservoir 3 set amount containing protein microbeads 11
Solution, with 3 macropore 5 of reservoir plugging.The used in amounts of the protein microbeads 11 guarantees enough macropore pluggings 5.In a kind of possibility
Embodiment in, the calculation formula of set amount can be made as follows:
W=π (r+5)2·d·Φ·k·ρ
Wherein, W is set amount；R is the radius of water injection well 1；D is the thickness of oil reservoir 3；Φ is the porosity of oil reservoir 3；K is
Constant between [15%-25%]；ρ is the density of protein microbeads.
The radius r of water injection well 1, the thickness d of oil reservoir 3, oil reservoir 3 porosity Φ can be obtained by the oil field means of production；K is
Constant between [15%-25%], be specifically as follows 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%,
24%, 25% etc.；ρ can be calculated according to practical proportion situation.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of Profile Control in Injection Well method, which is characterized in that the Profile Control in Injection Well method includes:
From water injection well to oil reservoir inject the solution containing protein microbeads, inject set amount the protein microbeads and then
Water is injected to the oil reservoir.
2. Profile Control in Injection Well method according to claim 1, which is characterized in that the partial size of the protein microbeads is described
0.8-1.2 times of the average pore size of oil reservoir.
3. Profile Control in Injection Well method according to claim 1, which is characterized in that the protein microbeads are phytoprotein
Particle.
4. Profile Control in Injection Well method according to claim 3, which is characterized in that the phytoprotein particle includes soybean
Protein particle.
5. Profile Control in Injection Well method according to claim 1, which is characterized in that the solution packet containing protein microbeads
It includes and the protein microbeads and water is formed by solution after mixing.
6. Profile Control in Injection Well method according to claim 1, which is characterized in that the solution packet containing protein microbeads
It includes and the protein microbeads and polymer dilution liquid is formed by solution after mixing.
7. Profile Control in Injection Well method according to claim 6, which is characterized in that the concentration of the polymer dilution liquid is
0.2%-1%.
8. Profile Control in Injection Well method according to claim 6, which is characterized in that the protein microbeads and the polymer
The mass ratio of dilution are as follows: (0.5-5): 100.
9. Profile Control in Injection Well method according to claim 6, which is characterized in that the polymer dilution liquid is polyacrylamide
Amine dilution.
10. Profile Control in Injection Well method according to claim 1, which is characterized in that the setting of the protein microbeads
The calculation formula of amount is as follows:
W=π (r+5)2·d·Φ·k·ρ
Wherein, W is the set amount；R is the radius of the water injection well；D is the thickness of the oil reservoir；Φ is the hole of the oil reservoir
Porosity；Constant of the k between [15%-25%]；ρ is the density of the protein microbeads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319142.7A CN110485974A (en) | 2019-04-19 | 2019-04-19 | A kind of Profile Control in Injection Well method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319142.7A CN110485974A (en) | 2019-04-19 | 2019-04-19 | A kind of Profile Control in Injection Well method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110485974A true CN110485974A (en) | 2019-11-22 |
Family
ID=68545864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910319142.7A Pending CN110485974A (en) | 2019-04-19 | 2019-04-19 | A kind of Profile Control in Injection Well method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485974A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743641A (en) * | 2005-07-14 | 2006-03-08 | 王胜存 | Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| CN102257094A (en) * | 2008-12-18 | 2011-11-23 | S.P.C.M.股份公司 | Improvement in enhanced oil recovery by polymer without supplementary equipment or product |
| CN105567200A (en) * | 2016-03-03 | 2016-05-11 | 仇颖超 | Method for preparing biological gel profile control agent |
| CN105940080A (en) * | 2013-12-13 | 2016-09-14 | 斯塔特伊海湾服务有限责任公司 | Stimulation method and system for enhancing oil production |
| CN108040483A (en) * | 2015-06-25 | 2018-05-15 | 全球有机能源股份有限公司 | Reservoir processing |
| CN108756837A (en) * | 2018-05-02 | 2018-11-06 | 中国石油天然气股份有限公司 | A kind of water injection well transfer drive method |
-
2019
- 2019-04-19 CN CN201910319142.7A patent/CN110485974A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743641A (en) * | 2005-07-14 | 2006-03-08 | 王胜存 | Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| CN102257094A (en) * | 2008-12-18 | 2011-11-23 | S.P.C.M.股份公司 | Improvement in enhanced oil recovery by polymer without supplementary equipment or product |
| CN105940080A (en) * | 2013-12-13 | 2016-09-14 | 斯塔特伊海湾服务有限责任公司 | Stimulation method and system for enhancing oil production |
| CN108040483A (en) * | 2015-06-25 | 2018-05-15 | 全球有机能源股份有限公司 | Reservoir processing |
| CN105567200A (en) * | 2016-03-03 | 2016-05-11 | 仇颖超 | Method for preparing biological gel profile control agent |
| CN108756837A (en) * | 2018-05-02 | 2018-11-06 | 中国石油天然气股份有限公司 | A kind of water injection well transfer drive method |
Non-Patent Citations (2)
| Title |
|---|
| 刘一江 等: "《化学调剖堵水技术》", 30 November 1999 * |
| 宋万超: "《高含水期油田开发技术和方法》", 31 March 2003 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103980873B (en) | A kind of three-phase froth composite oil-displacing system and application thereof | |
| US4332297A (en) | Selectively controlling fluid flow through the higher permeability zones of subterranean reservoirs | |
| CN104087280B (en) | A kind of low-permeability oil deposit carbon dioxide non-phase-mixing driving presses down alters closure system and method for blocking | |
| CN105602540B (en) | A kind of compact oil reservoir under-injected well administering method | |
| CN110945208B (en) | Method for improving oil recovery rate of stratum | |
| CN106893571B (en) | A kind of oil-in-water emulsion oil displacement agent | |
| CN108040483B (en) | Reservoir treatment | |
| CN102051161B (en) | Thick oil huff and puff deep channel blocking system and injection method thereof | |
| CN110847870B (en) | Method for improving oil displacement efficiency of oil field with medium and low water content | |
| CN108533238A (en) | A method of blocking dominant flowing path after poly- drive | |
| CN109915093A (en) | A kind of method that " stifled/tune/drive " integration improves oil recovery | |
| CN105625981A (en) | Composite profile control method for middle-high permeability oil reservoirs | |
| CN105971550A (en) | Profile control method for medium-and-high-permeability reservoir | |
| CN108729893A (en) | A kind of foam composite cold mining method improving recovery factor of heavy oil reservoir | |
| CN110529085A (en) | A kind of chemical flooding method of heavy crude reservoir | |
| CN105273700A (en) | Biological profiling and plugging agent, preparation method and application | |
| CN110485974A (en) | A kind of Profile Control in Injection Well method | |
| Qing et al. | Study and application of gelled foam for in-depth water shutoff in a fractured oil reservoir | |
| CN104343428B (en) | A kind of water injection well formation scaling verification method | |
| CN112724945A (en) | Salinity response type emulsion deep profile control agent, preparation method and profile control method thereof | |
| CN106995689A (en) | A kind of compound agent for anti gassing-out of carbon dioxide drive | |
| CN103256032A (en) | Method for enhancing water injecting capacity of hypotonic oil field by utilizing nano-powder material | |
| CN109251740A (en) | A kind of transfer drive system and flooding method suitable for carbonated weathering crust hiding | |
| CN109386261A (en) | A kind of method and system improving fine and close oily reservoir recovery ratio | |
| CN108487883A (en) | A kind of technique using natural gas and the carbon dioxide mix displacement of reservoir oil |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191122 |