CN1710014A - Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method - Google Patents
Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method Download PDFInfo
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- CN1710014A CN1710014A CN 200510010153 CN200510010153A CN1710014A CN 1710014 A CN1710014 A CN 1710014A CN 200510010153 CN200510010153 CN 200510010153 CN 200510010153 A CN200510010153 A CN 200510010153A CN 1710014 A CN1710014 A CN 1710014A
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Abstract
The invention relates to a kind of biological enzyme oil driving agent used for improving crude oil extraction rate and oil driving method. It mainly solves the problems in present oil driving process that: the stability is bad, it is greatly effected by temperature, it can't degrade, is nocuous, has corrosiveness, can cause oil layer form smudgily, and bring pollution to stratum and environment. Its characteristics are: the biology enzyme oil driving agent is comprised of following weight percents of components: biology enzyme 12 - 20%, diquaternary salt 0.4 - 12%, alkyl polysaccharide glucoside (C8-10APG) 0.4 - 12%, and the remaining is water. The biological enzyme oil driving method can effectively improve affusion ability, decrease petroleum granulated substance carrying ability, reduce the friction liquid and sandstone, so as to achieve the purpose of stabilizing oil storage and improving the recovery ratio.
Description
Technical field:
The present invention relates to a kind of oil-displacing agent and flooding method that is used to improve oil recovery factor, belong to a kind of biological enzyme oil displacement agent and flooding method that is used to improve oil recovery factor.
Background technology:
Oil recovery factor is meant that the oil mass of oil field accumulative total extraction accounts for the per-cent of oil field geologic reserves, the i.e. ratio of former oil mass of extraction and underground original oil reserve.Along with the oil-field development development of technology, the method for many effective raising recovery ratio also appears in succession.At early field life, adopt the water drive mode to exploit usually.Promptly by injecting to the stratum that water drives crude oil flow and by extraction.This dependence natural energy crude oil extraction method is called as primary oil recovery.The recovery ratio of primary oil recovery is very low, generally has only 5%-10%.After the forties in 20th century widespread use secondary oil recovery method promptly in oil reservoir water filling or gas injection recover the oil with supplementing energy.But the secondary oil recovery average recovery ratio is generally 30%-40%, still has that 60%-70%'s is oily left in the stratum.Fail the irreducible oil and the surplus oil of extraction at secondary oil recovery, adopting the method for injecting other work agent or introducing other energy to the stratum is the tertiary oil recovery method, normally immediately following after secondary oil recovery, drives as chemical flooding and mixed phase etc.The chemical flooding method is the main method that tertiary oil recovery improves the oil recovery yield.At present the common chemical flooding method mainly contain that alkali drives, polymer flooding, surfactant flooding and ternary composite driving.Alkali drives: it is the method for making the raising oil recovery factor of oil-displacing agent with the aqueous solution of alkaline agent that alkali drives.Alkali commonly used has NaOH, Na
2CO
3, Na
4SiO
4Deng.Naturally occurring acidic component such as naphthenic acid etc. generate carboxylate salt in alkali and the crude oil, make it be converted into the promoting agent that comes to the surface.Therefore alkali drives and requires that sufficiently high acid number is arranged in the crude oil (the milligram number of required KOH when 1g crude oil is neutralized to pH value generation hop).The acid number of crude oil is during less than 0.2mgKOH/g, and oil reservoir should not drive with alkali.The limitation that has so just caused alkali to drive, and alkali drives in the process alkali and stratum mineral and resident fluid, and to react caused loss big; Surfactant flooding: surfactant flooding is with a kind of method that improve oil recovery factor of tensio-active agent as oil-displacing agent.All tensio-active agents mostly are aniorfic surfactant.Tensio-active agent improves oil recovery factor by reducing mechanism such as oil water interfacial tension, emulsifying effect, wettability reversal effect, increase rock surface electric density.
Polymer flooding: polymer flooding is with a kind of method that improve oil recovery factor of high molecular polymer as oil-displacing agent.Conventional polymer is driven method promptly at the polymers soln that injects about water adding concentration 1000mg/L, by increasing the viscosity of injecting water, improves the profit mobility ratio, enlarges the swept volume of flooding system, to reach the purpose that improves the crude oil recovery ratio; Ternary composite driving (ASP): ternary composite driving (ASP) present method is polymkeric substance, alkali, tensio-active agent to be mixed the back by a certain percentage inject the stratum, by reducing oil water interfacial tension, improves oil displacement efficiency and reaches the purpose that improves oil recovery factor.Though this method can improve oil recovery factor (approximately about 20%OOIP) by big spoke degree, but the existence of alkali in the flooding system, greatly reduce the viscosity and the elasticity of polymkeric substance, need increase considerably polymer concentration (increasing to about 2000mg/L), simultaneously because the existence of alkali, the higher w/o type emulsion of viscosity has appearred in extraction liquid, not only ring oil well productivity, and increased the difficulty of breakdown of emulsion greatly, be difficult for finding suitable emulsion splitter, and the consumption of emulsion splitter is big, the electro-dewatering difficulty, and also the water quality of deviating from is difficult for reaching discharging and re-injection standard.The existence of alkali also can cause oil reservoir and oil well fouling in addition, causes tremendous influence to production.
Summary of the invention:
For solve poor stability in the existing oil displacement process, temperature influence big, can not degrade, poisonous, be corrosive, cause formation scaling, environment and stratum are brought pollution problems, the invention provides a kind of biological enzyme flooding method that is used to improve oil recovery factor, this biological enzyme flooding method can effectively raise water-injection capability, reduce petroleum sand carrying property, reduce the friction of fluid and sandstone, thereby reach the purpose that stable reservoir configuration, recovery ratio are improved.
The technical solution adopted in the present invention is: this biological enzyme oil displacement agent that is used to improve oil recovery factor is made up of following component and percentage composition proportioning by weight: biological enzyme 12～20%, diquaternary amine salt 0.4～12%, alkyl glycoside C
8～10APG 0.4～12%, and surplus is a water; Described biological enzyme is by protein-prozyme NOYEES, bio-active substance BIO-P and composite the forming of composite bio-active thing BIO-A, and three kinds of components of biological enzyme are 2: 5: 3 by weight ratio.
Above-mentioned biological enzyme 12%, diquaternary amine salt 4%, alkyl glycoside C
8～10APG 8%, water 76%.
A kind of biological enzyme flooding method that is used to improve oil recovery factor, comprise the following steps: that the medicament in the claim 1 is measured the back to be prepared in liquid pool, inject by injection tube alignment stratum by injection pump, injection mode is to inject continuously or intermittently inject, intermittently injection was a slug with 4 days, stopped annotating and continued after 4 days to inject again.
The invention has the beneficial effects as follows: the reservoir rock surface wettability is divided into that oil is wet, water wet and is middle wetting, the wetting regime on reservoir rock surface has very big influence to crude oil flow, the oil wettability rock is strong to the adhesive power of crude oil, and water membrane is easily formed on the surface of wetting ability rock, has weakened the adhesive power to crude oil.The biological enzyme that present method is all and other displacement of reservoir oil can make the reservoir rock wettability of the surface transform to the wet direction of water from oil is wet with agent, thereby change the wetting regime of reservoir rock, reduce oil---the interfacial tension between the rock stratum, make crude oil be easy to strip down from rock surface, also have certain viscosity reduction effect simultaneously, thereby reduced the resistance to flow of crude oil in formation pore.Under the effect of reservoir pressure, crude oil from around flow to pit shaft, thereby play increase oil effect.This flooding method is when quickening displacement oil stream, can be in surface attachment such as metal and rock cores, form one deck bioactive molecule film, stop precipitation of paraffin, and give birth to katalysis, participate in the formation of wax crystalline substance with the wax trichite, promote the rugged change of wax crystalline substance, change wax crystalline form attitude, stop the wax crystalls further growth, thereby prevent the deposition fouling of heavy components such as wax, bituminous matter, colloid effectively.The effect of anti-sealing injury so comprehensive action improves greatly, effectively raises water-injection capability, and recovery ratio is improved.Reduce petroleum sand carrying property, reduce the friction of fluid and sandstone, thereby reach stable reservoir configuration.
The present invention adopts natural core to compare test with conventional ASP (ternary is driven) flooding method, and experimental technique is identical with conventional flooding method, experimental result picture 2-Fig. 4, and as can be seen from the figure, the biological enzyme flooding method can improve oil recovery factor and reach 25%.
Description of drawings:
Fig. 1 is displacement of reservoir oil injection technology figure of the present invention;
Fig. 2 recovery ratio improves comparison diagram;
The continuous displacement pressure of Fig. 3 changes comparison diagram;
Fig. 4 permeability variation comparison diagram.
Embodiment:
Below will the invention will be further described: this biological enzyme oil displacement agent that is used to improve oil recovery factor be formed also percentage composition proportioning by weight by following component: biological enzyme 12～20%, diquaternary amine salt 0.4～12%, alkyl glycoside C
8～10APG 0.4～12%, and surplus is a water; Biological enzyme 12%, diquaternary amine salt 4%, alkyl glycoside C
8～10APG 8%, water 76%.Described biological enzyme is by protein-prozyme NOYEES, bio-active substance BIO-P and composite the forming of composite bio-active thing BIO-A, and three kinds of components of biological enzyme are 2: 5: 3 by weight ratio.Above-mentioned diquaternary amine salt, alkyl glycoside, protein-prozyme NOYEES, bio-active substance BIO-P and composite bio-active thing BIO-A are known common chemical preparation.
A kind of biological enzyme flooding method that is used for improving oil recovery factor comprises the following steps: that the medicament with claim 1 measures the back and prepares in liquid pool, inject by injection tube alignment stratum by injection pump, injection mode is to inject continuously or intermittently inject, intermittently injection was a slug with 4 days, stopped annotating and continued after 4 days to inject again.
Embodiment 4, with 120 kilograms of biological enzymes, 40 kilograms of diquaternary amine salt, alkyl glycoside C
8～1080 kilograms of APG, water drop in the liquid pool for 760 kilograms, are injected by injection tube alignment stratum by injection pump, and the above-mentioned medicament for preparing is a big injection rate.
Claims (3)
1, a kind of biological enzyme oil displacement agent that is used to improve oil recovery factor is characterized in that: this biological enzyme oil displacement agent is formed also percentage composition proportioning by weight by following component: biological enzyme 12～20%, diquaternary amine salt 0.4～12%, alkyl glycoside C
8～10APG 0.4～12%, and surplus is a water; Described biological enzyme is made up of three kinds of components: protein-prozyme NOYEES, bio-active substance BIO-P and composite the forming of composite bio-active thing BIO-A, three kinds of components of biological enzyme are 2: 5: 3 by weight ratio.
2, the biological enzyme oil displacement agent that is used to improve oil recovery factor according to claim 1 is characterized in that: biological enzyme 12%, diquaternary amine salt 4%, alkyl glycoside C
8～10APG 8%, water 76%.
3, a kind of biological enzyme flooding method that is used to improve oil recovery factor, it is characterized in that: comprise the following steps: that the medicament in the claim 1 is measured the back to be dropped in the liquid pool, inject by injection tube alignment stratum by injection pump, injection mode is to inject continuously or intermittently inject, intermittently injection was a slug with 4 days, stopped annotating and continued after 4 days to inject again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101535A CN1315979C (en) | 2005-06-30 | 2005-06-30 | Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method |
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|---|---|---|---|
| CNB2005100101535A CN1315979C (en) | 2005-06-30 | 2005-06-30 | Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method |
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| CN1710014A true CN1710014A (en) | 2005-12-21 |
| CN1315979C CN1315979C (en) | 2007-05-16 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182434A (en) * | 2011-05-05 | 2011-09-14 | 天津亿利科能源科技发展股份有限公司 | Method for oil displacement by activating indigenous microbes through slow release action |
| CN102220117A (en) * | 2011-05-05 | 2011-10-19 | 陕西延长石油(集团)有限责任公司研究院 | Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields |
| 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 |
| CN107676071A (en) * | 2016-08-01 | 2018-02-09 | 中国石油化工股份有限公司 | A kind of inexpensive method for increasing for weakening crude oil biological degraded thickening |
| 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 |
| CN114542036A (en) * | 2022-04-27 | 2022-05-27 | 山东方科石油技术有限公司 | Huff-puff profile control and yield increase method for low-pressure heavy oil well |
| CN116355603A (en) * | 2023-03-21 | 2023-06-30 | 陕西延长石油（集团）有限责任公司 | Non-ultralow interfacial tension oil displacement agent for improving recovery ratio of low-permeability oil reservoir as well as preparation method and application thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU651164B2 (en) * | 1990-12-21 | 1994-07-14 | Energy Biosystems Corporation | Microbial process for reduction of petroleum viscosity |
| JPH08228778A (en) * | 1995-02-27 | 1996-09-10 | Showa Denko Kk | New lipase gene and production of lipase using the same |
| JP3320307B2 (en) * | 1996-06-06 | 2002-09-03 | 株式会社エス・ディー・エス バイオテック | Method for polymerizing phenolic compounds and its use |
| CN1320762A (en) * | 2001-05-14 | 2001-11-07 | 中国石油天然气股份有限公司 | Nm-membrane oil-displacing technique |
| CN1281746C (en) * | 2004-08-30 | 2006-10-25 | 西北师范大学 | Biological polysaccharide high molecular micro ball fixnig beta-galactosidase and its prearing method |
-
2005
- 2005-06-30 CN CNB2005100101535A patent/CN1315979C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182434A (en) * | 2011-05-05 | 2011-09-14 | 天津亿利科能源科技发展股份有限公司 | Method for oil displacement by activating indigenous microbes through slow release action |
| CN102220117A (en) * | 2011-05-05 | 2011-10-19 | 陕西延长石油(集团)有限责任公司研究院 | Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields |
| 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 |
| CN107676071A (en) * | 2016-08-01 | 2018-02-09 | 中国石油化工股份有限公司 | A kind of inexpensive method for increasing for weakening crude oil biological degraded thickening |
| CN107676071B (en) * | 2016-08-01 | 2020-03-20 | 中国石油化工股份有限公司 | Low-cost yield increasing method for weakening biodegradation and thickening of crude oil |
| 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 |
| CN114542036A (en) * | 2022-04-27 | 2022-05-27 | 山东方科石油技术有限公司 | Huff-puff profile control and yield increase method for low-pressure heavy oil well |
| CN114542036B (en) * | 2022-04-27 | 2022-06-28 | 山东方科石油技术有限公司 | Huff-puff profile control production increase method for low-pressure heavy oil well |
| CN116355603A (en) * | 2023-03-21 | 2023-06-30 | 陕西延长石油（集团）有限责任公司 | Non-ultralow interfacial tension oil displacement agent for improving recovery ratio of low-permeability oil reservoir as well as preparation method and application thereof |
| CN116355603B (en) * | 2023-03-21 | 2024-04-16 | 陕西延长石油（集团）有限责任公司 | Non-ultralow interfacial tension oil displacement agent for improving recovery ratio of low-permeability oil reservoir as well as preparation method and application thereof |
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| CN1315979C (en) | 2007-05-16 |
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Effective date of registration: 20200616 Address after: Room 0912, building 2, Greenland Central Plaza, plot B07, Xiaotangshan Town, Changping District, Beijing 102200 Patentee after: BEIJING VICTEX ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 163114 grand chemical industrial park, hi tech Industrial Development Zone, Heilongjiang, Daqing Patentee before: DAQING VERTEX CHEMICAL Co.,Ltd. |
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