CN102373038A - Biological enzyme oil displacement agent - Google Patents
Biological enzyme oil displacement agent Download PDFInfo
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- CN102373038A CN102373038A CN2011103543275A CN201110354327A CN102373038A CN 102373038 A CN102373038 A CN 102373038A CN 2011103543275 A CN2011103543275 A CN 2011103543275A CN 201110354327 A CN201110354327 A CN 201110354327A CN 102373038 A CN102373038 A CN 102373038A
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- percent
- enzyme
- biological enzyme
- displacement agent
- oil
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Abstract
The invention discloses a biological enzyme oil displacement agent for improving the crude oil recovery ratio, which comprises the following ingredients through being metered in percentage by weight: 15 percent to 20 percent of biological enzyme, 5 percent to 8 percent of polyoxyethylene ether, 0.5 percent to 10 percent of alkyl glucoside, 0.5 percent to 8 percent of bis-ammonium salt and the balance of water. The biological enzyme oil displacement agent has the advantages that the water filling capability is efficiently improved, the sand carrying capability of crude oil is reduced, and the friction between fluid and sandstone is reduced, so the goals of stabilizing the oil pool structure and improving the crude oil recovery ratio are reached.
Description
Technical field
The invention belongs to petrochemical complex and use the chemical article technical field, be specifically related to a kind of biological enzyme oil displacement agent that is used to improve oil recovery factor.
Background technology
In the process of oil-field development at present, primary oil recovery is that crude oil relies on subsurface pressure, and from the process that sprays ground, along with the reduction of subsurface pressure, blowing finishes through oil well, but about the underground 10-15% of primary oil recovery extraction.Secondary oil recovery is through toward underground continuous water filling, replenishes underground energy, thereby realizes the purpose of water displacing oil.But along with continuous water filling, moisture continuous rising in the extraction liquid, moisture in China's onshore oil field extraction liquid at present up to 92-95%.By international standard, moisturely in the extraction liquid reach at 97% o'clock, promptly there is not any economic benefit.But secondary oil recovery can only the underground crude oil of extraction about 20%.Therefore, generally carry out TOR, the i.e. chemical displacement of reservoir oil in the petroleum industry.But existing oil-displacing agent is only pursued ultra low interfacial tension usually, does not pay attention to reservoir geologic character and crude oil property condition.
Summary of the invention
To the problem that exists in the above-mentioned prior art; The invention provides a kind of new bio enzyme oil-displacing agent, it effectively improves water-injection capability, reduces the crude oil prop-carrying capacity; Reduce the friction of fluid and sandstone; Thereby it is reach stable reservoir configuration, improve the purpose of oil recovery factor, and environmentally friendly pollution-free.
The technical scheme that the present invention adopted is:
A kind of biological enzyme oil displacement agent is characterized in that: effective ingredient comprises enzyme, Soxylat A 25-7, APG and bi-quaternary ammonium salt; Said enzyme comprises protein prozyme NOYEES, bio-active substance BIO-P and BIO-A.
Said components is known chemicals commonly used.
Protein prozyme NOYEES in the said enzyme, the optimum weight fraction of bio-active substance BIO-P and BIO-A is than being 3:5:2.
Each components based on weight percentage is in the said biological enzyme oil displacement agent: enzyme 15% ~ 20%, Soxylat A 25-7 5% ~ 8%, APG 0.5% ~ 10%, bi-quaternary ammonium salt 0.5% ~ 8%, water surplus.
Said each components based on weight percentage is preferably: enzyme 18%, Soxylat A 25-7 6%, APG 5%, bi-quaternary ammonium salt 4%, water surplus.
The beneficial effect that the present invention brings is:
Biological enzyme oil displacement agent according to the invention can be that the wettability of oil bearing reservoir rock surface transforms from the wet direction of the wet picture of oil water; Thereby change the wetting regime of reservoir rock; Reduce the IT between oil-rock; Be that crude oil is easy to strip down from rock surface, also have certain viscosity reduction effect simultaneously, reduced the resistance to flow of crude oil in formation pore.Under the reservoir pressure effect, crude oil from around flow to pit shaft, thereby play increase oil effect.
The present invention can form the layer of active molecular film in surface attachment such as metal and rocks, stops precipitation of paraffin, and katalysis is given birth in the cured trichite of acetone; Change cured crystalline form attitude, stop cured brilliant further growth, thereby effectively prevent to precipitate fouling; The effect of anti-sealing injury has effectively improved water-injection capability, reduces the crude oil prop-carrying capacity; Reduce the friction of fluid and sandstone, thereby reach stable reservoir configuration, improve the purpose of oil recovery factor.
Embodiment:
The invention is further illustrated by the following examples, but the present invention is not limited to this.
Embodiment 1
Enzyme 18%, Soxylat A 25-7 6%, APG 5%, bi-quaternary ammonium salt 4%, water surplus.Said components drops in the liquid pool in proportion, is injected through injection tube alignment stratum by injection pump.
Embodiment 2
Enzyme 15%, Soxylat A 25-7 5%, APG 0.5%, bi-quaternary ammonium salt 0.5%, water surplus.Said components drops in the liquid pool in proportion, is injected through injection tube alignment stratum by injection pump.
Embodiment 3
Enzyme 20%, Soxylat A 25-7 8%, APG 10%, bi-quaternary ammonium salt 8%, water surplus.Said components drops in the liquid pool in proportion, is injected through injection tube alignment stratum by injection pump.
Claims (4)
1. biological enzyme oil displacement agent, it is characterized in that: effective ingredient comprises enzyme, Soxylat A 25-7, APG and bi-quaternary ammonium salt; Said enzyme comprises protein prozyme NOYEES, bio-active substance BIO-P and BIO-A.
2. a kind of biological enzyme oil displacement agent according to claim 1 is characterized in that: protein prozyme NOYEES in the said enzyme, the weight fraction of bio-active substance BIO-P and BIO-A is than being 3:5:2.
3. a kind of biological enzyme oil displacement agent according to claim 2 is characterized in that, said each components based on weight percentage is: enzyme 15% ~ 20%, Soxylat A 25-7 5% ~ 8%, APG 0.5% ~ 10%, bi-quaternary ammonium salt 0.5% ~ 8%, water surplus.
4. a kind of biological enzyme oil displacement agent according to claim 3 is characterized in that, said each components based on weight percentage is: enzyme 18%, Soxylat A 25-7 6%, APG 5%, bi-quaternary ammonium salt 4%, water surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103543275A CN102373038A (en) | 2011-11-10 | 2011-11-10 | Biological enzyme oil displacement agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103543275A CN102373038A (en) | 2011-11-10 | 2011-11-10 | Biological enzyme oil displacement agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373038A true CN102373038A (en) | 2012-03-14 |
Family
ID=45792275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103543275A Pending CN102373038A (en) | 2011-11-10 | 2011-11-10 | Biological enzyme oil displacement agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102373038A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807851A (en) * | 2012-08-13 | 2012-12-05 | 东营利丰化工新材料有限公司 | Bio-enzyme viscosity-breaking blockage-removing agent and production process thereof |
| CN103614130A (en) * | 2013-12-04 | 2014-03-05 | 北京安镁瑞普环保技术开发有限公司 | Bioenzyme preparation |
| CN109825272A (en) * | 2019-04-10 | 2019-05-31 | 苏州泽方新能源技术有限公司 | Biological enzyme oil displacement agent suitable for crude oil acquisition |
-
2011
- 2011-11-10 CN CN2011103543275A patent/CN102373038A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807851A (en) * | 2012-08-13 | 2012-12-05 | 东营利丰化工新材料有限公司 | Bio-enzyme viscosity-breaking blockage-removing agent and production process thereof |
| CN103614130A (en) * | 2013-12-04 | 2014-03-05 | 北京安镁瑞普环保技术开发有限公司 | Bioenzyme preparation |
| CN109825272A (en) * | 2019-04-10 | 2019-05-31 | 苏州泽方新能源技术有限公司 | Biological enzyme oil displacement agent suitable for crude oil acquisition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |