CN109233779A - A kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof improving oil recovery factor - Google Patents
A kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof improving oil recovery factor Download PDFInfo
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- CN109233779A CN109233779A CN201711153165.2A CN201711153165A CN109233779A CN 109233779 A CN109233779 A CN 109233779A CN 201711153165 A CN201711153165 A CN 201711153165A CN 109233779 A CN109233779 A CN 109233779A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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Abstract
The invention belongs to be used to improve chemistry (surfactant) displacement of reservoir oil field of oil recovery factor in petroleum industry.The high-efficient oil-displacing agent product of this method preparation has broad spectrum activity, is applicable not only to all oil fields of polymer flooding, and is suitable for minor block oilfield, the low permeability oil field, ultra-low penetration oil field of unsuitable polymer injection.The oil displacement agent is the mixed system constituted with anion zwitterionic Gemini surfactant, nonionic surfactant, anionic surfactant and water.Compared with prior art products, product of the present invention salt-resistance is good, occurs in salt content 100000ppm (wherein calcium and magnesium ion content 5000ppm) aqueous solution without precipitating, turbid phenomenon；High temperature resistant and use temperature range is wide can be used below 150 DEG C of temperature；Oil water interfacial tension be can effectively reduce to 10‑3mN/m.15% or more oil recovery factor can be improved on the basis of water drive is complete, be with a wide range of applications.
Description
Technical field:
The invention belongs to be used to improve chemistry (surfactant) displacement of reservoir oil field of oil recovery factor in petroleum industry, specifically
Say be it is a kind of there is broad spectrum activity, be applicable not only to all oil fields of polymer flooding, and be suitable for the small of unsuitable polymer injection
Fault-block oilfield, low permeability oil field, the anti-salt temperature-resistant high-efficient oil-displacing agent in ultra-low penetration oil field and its preparation.
Background technique:
In recent years as each elephant in China steps into the High water cut exploitation later period, aqueous to be gradually increasing, oil production is year by year
Successively decreasing, residual recoverable reserves is reduced, and incremental reserves rising is slower, and exploration cost and difficulty are increasing, because
This control is aqueous, and stabilized crude (oil) yield improves oil recovery factor to the greatest extent, has for entire petroleum industry very important
Effect.
The present invention " a kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof for improving oil recovery factor " is exactly for working as
The steady oil control water in modern oil field improves a kind of surfactant system technology of reservoir sweep of oil recovery factor, is for hyposmosis, Oil in Super-low Permeability
Saturating geology characteristic, crude oil property are developed, and are had a characteristic that
1. the product has broad spectrum activity, wide adaptation range-is applicable not only to all oil fields of polymer flooding, and is suitable for
Minor block oilfield, the low permeability oil field, ultra-low penetration oil field of unsuitable polymer injection；
2. interfacial tension value can reach 10 under the use concentration of the wide -0.05%-0.5% of use scope-3-10-2mN/m；
3. improving the high osmosis of product, the seepage flow excellent effect in LOW PERMEABILITY RESERVOIR is 0.1~1.0 milli in permeability
Under conditions of darcy, the transmitance of the product is 99.5%；
4. solving the problems, such as conventional surfactant wettability of rock surface periodic inversion in use, the production
Product can be changed wettability of rock surface and extend returing cycle；
5. salt-resistance is good, in salt content 100000ppm (wherein calcium and magnesium ion content 5000ppm) aqueous solution without precipitating,
Turbid phenomenon occurs；
6. resistant to high temperatures, use temperature range is wide-it can be used within the scope of 0 DEG C -150 DEG C.
7. alkali-free, to stratum fanout free region
Summary of the invention:
The object of the present invention is to provide a kind of anti-salt temperature-resistant high-efficient oil-displacing agents and preparation method thereof for improving oil recovery factor.
Technical scheme is as follows:
It is a kind of improve oil recovery factor anti-salt temperature-resistant high-efficient oil-displacing agent, it is characterised in that: it be by following components according to
Weight percent is formulated:
The anion zwitterionic Gemini surfactant is sulfonic acid type anionic Gemini surfactant, carboxylic acid type
A kind of or its any mixture in anionic Gemini surfactant.
The nonionic surfactant is aliphatic amine polyoxyethylene ether, octyl phenol polyoxyethylene ether, alkyl polyglycoside
Middle one kind or its mixture arbitrarily matched.
The anionic surfactant is aerosol-OT salt, diisobutyl sodium naphthalene sulfonate, alpha-olefin
One kind of sodium sulfonate or its mixture arbitrarily matched.
A kind of optimization weight percent of the anti-salt temperature-resistant high-efficient oil-displacing agent each component of the raising oil recovery factor are as follows:
A kind of anti-salt temperature-resistant high-efficient oil-displacing agent of the raising oil recovery factor, it is characterised in that the following steps are included:
(1) it under normal temperature and pressure, adds water in reaction kettle, opens stirring, anionic surfactant (sulphur is then added
Change dioctyl succinate sodium salt, diisobutyl sodium naphthalene sulfonate, alpha-olefin sodium sulfonate) one of or its mixing for arbitrarily matching
0.5h is sufficiently stirred in object；
(2) after mixing evenly, anion zwitterionic Gemini surfactant is added, continues to stir 0.5h；
(3) after being sufficiently stirred be added nonionic surfactant (aliphatic amine polyoxyethylene ether, octyl phenol polyoxyethylene ether,
Alkyl polyglycoside) in a kind of or its mixture arbitrarily matched continue to stir 1h, both the oil displacement agent product.
The present invention be directed to hyposmosis, ultra-low penetration geology characteristic, crude oil properties to develop, for the steady oil control in current oil field
Water improves a kind of surfactant flooding technical system of oil recovery factor, the anion both sexes in the oil displacement agent technical system
Gemini surface active is host agent, other nonionic surfactants and anionic surfactant are auxiliary agent.
Compared with the prior art, the invention has the following advantages that
1. the product has broad spectrum activity, wide adaptation range-is applicable not only to all oil fields of polymer flooding, and is suitable for
Minor block oilfield, the low permeability oil field, ultra-low penetration oil field of unsuitable polymer injection；
2. interfacial tension value can reach 10 under the use concentration of the wide -0.05%-0.5% of use scope-3-10-2mN/m；
3. improving the high osmosis of product, the seepage flow excellent effect in LOW PERMEABILITY RESERVOIR is 0.1~1.0 milli in permeability
Under conditions of darcy, the transmitance of the product is 99.5%；
4. solving the problems, such as conventional surfactant wettability of rock surface periodic inversion in use, the production
Product can be changed wettability of rock surface and extend returing cycle；
5. salt-resistance is good, in salt content 100000ppm (wherein calcium and magnesium ion content 5000ppm) aqueous solution without precipitating,
Turbid phenomenon occurs；
6. resistant to high temperatures, use temperature range is wide-it can be used within the scope of 0 DEG C -150 DEG C.
7. alkali-free, to stratum fanout free region
Detailed description of the invention
Attached drawing is oil displacement agent scene using effect schematic diagram of the present invention.
Specific embodiment
Embodiment 1:
(1) under normal temperature and pressure, 30kg water is added in reaction kettle, opens stirring, it is pungent that sulfosuccinate two is then added
Ester sodium salt 15kg, is sufficiently stirred 0.5h；
(2) after mixing evenly, anion zwitterionic Gemini surfactant 30kg is added, continues to stir 0.5h；
(3) nonionic surfactant aliphatic amine polyoxyethylene ether 25kg is added after being sufficiently stirred, continues to stir 1h, both
The oil displacement agent product.
Embodiment 2:
(1) under normal temperature and pressure, 40kg water is added in reaction kettle, opens stirring, α-alkene sulfonic acid sodium is then added
0.5h is sufficiently stirred in 10kg；
(2) after mixing evenly, anion zwitterionic Gemini surfactant 30kg is added, continues to stir 0.5h；
(3) nonionic surfactant octyl phenol polyoxyethylene ether 20kg is added after being sufficiently stirred, continues to stir 1h, both
The oil displacement agent product.
Embodiment 3:
Then plus diisobutyl sodium naphthalene sulfonate (1) under normal temperature and pressure, 35kg water is added in reaction kettle, opens stirring,
0.5h is sufficiently stirred in 15kg；
(2) after mixing evenly, anion zwitterionic Gemini surfactant 30kg is added, continues to stir 0.5h；
(3) nonionic surfactant alkyl polyglycoside 20kg is added after being sufficiently stirred, continues to stir 1h, both obtains the displacement of reservoir oil
Agent product.
Embodiment 4:
(1) under normal temperature and pressure, 25kg water is added in reaction kettle, opens stirring, it is pungent that sulfosuccinate two is then added
Ester sodium salt 15kg, is sufficiently stirred 0.5h；
(2) after mixing evenly, anion zwitterionic Gemini surfactant 35kg is added, continues to stir 0.5h；
(3) after being sufficiently stirred be added nonionic surfactant aliphatic amine polyoxyethylene ether 15kg, alkyl polyglycoside 10kg,
Continue to stir 1h, both obtains the oil displacement agent product.
Oil displacement agent effect assessment of the present invention:
Live Displacement Efficiency:
Referring to attached drawing, from curve graph it is evident that the well injects this oil displacement agent from June, 2011, start in July, 2011
Aqueous decline, oil production rise, and in by the end of May, 2012 by the end of, oil production is risen to average 3 during measure by 2 tons/d before measure
Ton/d, oil increment reach 50%, and effect is obvious.
Claims (6)
1. a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor, it is characterised in that: it is by following components according to weight
Amount percentage is formulated:
Anion zwitterionic Gemini surfactant 30-35%
Nonionic surfactant 20-25%
Anionic surfactant 10-15%
Water 25-40%.
2. a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor according to claim 1, it is characterised in that: institute
The anion zwitterionic Gemini surfactant stated is sulfonic acid type anionic Gemini surfactant, carboxylic acid type anion
A kind of or its any mixture in Gemini surface active.
3. a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor according to claim 1, it is characterised in that: described
Nonionic surfactant be aliphatic amine polyoxyethylene ether, octyl phenol polyoxyethylene ether, it is a kind of in alkyl polyglycoside or its
The mixture for proportion of anticipating.
4. a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor according to claim 1, it is characterised in that: described
Anionic surfactant be aerosol-OT salt, diisobutyl sodium naphthalene sulfonate, one kind of alpha-olefin sodium sulfonate
Or its mixture for arbitrarily matching.
5. a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor according to claim 1, it is characterised in that: it
It is to be formulated by following components according to weight percent:
Anion zwitterionic Gemini surfactant 30-35%
In nonionic surfactant (aliphatic amine polyoxyethylene ether, octyl phenol polyoxyethylene ether, alkyl polyglycoside) it is a kind of or its
The mixture 20-25% arbitrarily matched
In anionic surfactant (aerosol-OT salt, diisobutyl sodium naphthalene sulfonate, alpha-olefin sodium sulfonate)
A kind of or its mixture for arbitrarily matching
10-15%
Water 25-40%.
6. the method for preparing a kind of anti-salt temperature-resistant high-efficient oil-displacing agent for improving oil recovery factor described in claim 1, feature
It is: method includes the following steps:
(1) it under normal temperature and pressure, adds water in reaction kettle, opens stirring, anionic surfactant (sulfonation amber is then added
Amber dioctyl phthalate sodium salt, diisobutyl sodium naphthalene sulfonate, alpha-olefin sodium sulfonate) one of or its mixture for arbitrarily matching, fill
Divide stirring 0.5h；
(2) after mixing evenly, anion zwitterionic Gemini surfactant is added, continues to stir 0.5h；
(3) nonionic surfactant (aliphatic amine polyoxyethylene ether, octyl phenol polyoxyethylene ether, alkyl are added after being sufficiently stirred
Polysaccharide glycosides) in a kind of or its mixture arbitrarily matched continue to stir 1h, both the oil displacement agent product.
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| CN201711153165.2A CN109233779A (en) | 2017-11-20 | 2017-11-20 | A kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof improving oil recovery factor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11236264B2 (en) | 2020-06-08 | 2022-02-01 | Saudi Arabian Oil Company | Methods and compositions using a combination of zwitterionic surfactants and gemini surfactants as diversion agents |
| CN114540002A (en) * | 2020-11-24 | 2022-05-27 | 中国石油天然气股份有限公司 | Salt-tolerant low-interfacial-tension foam oil displacement agent |
| CN114774098A (en) * | 2022-05-27 | 2022-07-22 | 山东新港化工有限公司 | Thickened oil viscosity-reducing oil detergent for synergistic polymer flooding and preparation method and application thereof |
| CN115491188A (en) * | 2022-10-14 | 2022-12-20 | 中国石油化工股份有限公司 | Oil field development displacement emulsion and preparation method and application thereof |
| US11959017B1 (en) | 2022-10-07 | 2024-04-16 | Saudi Arabian Oil Company | Methods and materials for wellbore fluid diversion using visco-elastic surfactants |
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| CN101445722A (en) * | 2008-12-30 | 2009-06-03 | 合肥新星油田化学剂有限责任公司 | Oil displacement agent suitable for surfactant for low-permeability oilfield, and preparation method thereof |
| US20090325826A1 (en) * | 2007-07-03 | 2009-12-31 | Baker Hughes Incorporated | Method for changing the wettability of rock formations |
| CN102242625A (en) * | 2011-04-25 | 2011-11-16 | 中国石油化工股份有限公司 | Method for improving recovery ratio of crude oil of oil deposit after polymer flooding |
| CN106350048A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Oil washing agent for oil well fracturing as well as preparation method and application of oil washing agent |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11236264B2 (en) | 2020-06-08 | 2022-02-01 | Saudi Arabian Oil Company | Methods and compositions using a combination of zwitterionic surfactants and gemini surfactants as diversion agents |
| CN114540002A (en) * | 2020-11-24 | 2022-05-27 | 中国石油天然气股份有限公司 | Salt-tolerant low-interfacial-tension foam oil displacement agent |
| CN114540002B (en) * | 2020-11-24 | 2023-04-25 | 中国石油天然气股份有限公司 | Salt-resistant low-interfacial tension foam oil displacement agent |
| CN114774098A (en) * | 2022-05-27 | 2022-07-22 | 山东新港化工有限公司 | Thickened oil viscosity-reducing oil detergent for synergistic polymer flooding and preparation method and application thereof |
| US11959017B1 (en) | 2022-10-07 | 2024-04-16 | Saudi Arabian Oil Company | Methods and materials for wellbore fluid diversion using visco-elastic surfactants |
| CN115491188A (en) * | 2022-10-14 | 2022-12-20 | 中国石油化工股份有限公司 | Oil field development displacement emulsion and preparation method and application thereof |
| CN115491188B (en) * | 2022-10-14 | 2023-07-28 | 中国石油化工股份有限公司 | Oilfield development displacement emulsion and preparation method and application thereof |
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Application publication date: 20190118 |