CN104017554B - A kind of complexed surfactant oil displacement system and preparation method thereof, application - Google Patents
A kind of complexed surfactant oil displacement system and preparation method thereof, application Download PDFInfo
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- CN104017554B CN104017554B CN201410271113.5A CN201410271113A CN104017554B CN 104017554 B CN104017554 B CN 104017554B CN 201410271113 A CN201410271113 A CN 201410271113A CN 104017554 B CN104017554 B CN 104017554B
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- oil displacement
- displacement system
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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 discloses a kind of complexed surfactant oil displacement system, it is made up of the component of following weight/mass percentage composition: fatty alcohol-polyoxyethylene ether 0.5～1%, alkylphenol polyoxyethylene 0.1～0.3%, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer 5～7%, organic cosolvent 2～4%, injects water surplus.The oil displacement system compatibility of the present invention is reasonable, by the mutual synergism between polymer and surfactant, has stronger anti-salt property and resistance to elevated temperatures, and can effectively reduce interface tension force, and oil displacement efficiency is good, is greatly improved the recovery ratio of crude oil.The invention also discloses the preparation method of a kind of complexed surfactant oil displacement system, after fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer are mixed by proportioning with organic cosolvent, add the water of surplus, stand in vacuum after sonic oscillation.This preparation method processing step is simple, workable, low cost, is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of oil displacement agent, especially relate to a kind of complexed surfactant oil displacement system and system thereof
Preparation Method, application.
Background technology
The exploitation in oil field is broadly divided into primary oil recovery, secondary oil recovery and tertiary oil recovery.The primary oil recovery in oil field and
Secondary oil recovery about can only extraction crude oil total amount about 1/3, remaining 2/3 crude oil is accomplished by by three times
Oil recovery technique is exploited.In tertiary oil recovery, mainly lived by a certain amount of polymer of addition, surface
Property the material such as agent, alkali, improve inject water involves scope, change viscosity of crude and reduce water interfacial tension,
Reach to regulate the wettability of bottom surface, improve capillary number, increase crude oil dispersibility in water, change
The purpose of rheological characteristic of crude oil, thus increase substantially the recovery ratio of crude oil.Tertiary oil recovery technology has become as me
The major measure of oil recovery factor improves in state.
Individually water drive cannot overcome the capillary force suffered by residual oil, attached power of slitting and cohesiveness, is difficult to drive oil
Go out, can be substantially reduced between injection water and stratum residual oil after adding suitable surfactant in injecting water
Interfacial tension, by residual oil displacement out, improve recovery ratio.
Surfactant oil displacement mainly has anion surfactant, nonionic surfactant and both sexes table
Face activating agent.But simple surface active agent composition and function singleness, salt tolerance or resistance to elevated temperatures are poor,
It is difficult to improve further the recovery ratio of crude oil so that it is application is restricted.
Summary of the invention
The invention aims to provide a kind of complexed surfactant oil displacement system, by polymer and surface
Activating agent compounds, and compatibility is reasonable, utilizes polymer and surfactant synergism between the two,
Oil displacement efficiency is good, is greatly improved the recovery ratio of crude oil.
Present invention also offers the preparation method of a kind of complexed surfactant oil displacement system, this preparation method work
Skill step is simple, workable, low cost, is suitable for large-scale industrial production.
To achieve these goals, the present invention is by the following technical solutions:
A kind of complexed surfactant oil displacement system, it is made up of the component of following weight/mass percentage composition: fat
Polyoxyethylenated alcohol 0.5～1%, alkylphenol polyoxyethylene 0.1～0.3%, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl
Ether copolymer 5～7%, organic cosolvent 2～4%, injects water surplus.The formula of oil displacement system is carried out by the present invention
Optimizing design, compatibility is reasonable, by polymer is compounded with surfactant, utilize each component it
Between mutual synergism, make the present invention have stronger anti-salt property and resistance to elevated temperatures, and can effectively drop
Low interface tension force, oil displacement efficiency is good, is greatly improved the recovery ratio of crude oil.
As preferably, described organic cosolvent is butanol or isopropanol.
The preparation method of a kind of complexed surfactant oil displacement system, by fatty alcohol-polyoxyethylene ether, alkyl phenol
After polyoxyethylene ether, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer are mixed by proportioning with organic cosolvent,
Add the water of surplus, under vacuum condition, after sonic oscillation 10～30min, stand 1～2h.The preparation side of the present invention
Method process is simple, easily operates, and by mixture, wherein sonic oscillation coordinates vacuum to stand, whole to ensure
The homogeneity of individual oil displacement system and stability.
The application when three displacement of reservoir oils of a kind of complexed surfactant oil displacement system.
Therefore, there is advantages that
(1) formula to oil displacement system is optimized design, and compatibility is reasonable, by by polymer and surface
Activating agent compounds, and utilizes the mutual synergism between each component, makes the present invention have stronger anti-salt
Performance and resistance to elevated temperatures, and can effectively reduce interface tension force, oil displacement efficiency is good, is greatly improved former
The recovery ratio of oil；
(2) the preparation method process of the present invention is simple, easily operates, by mixture, and passes through Under Ultrasonic Vibration
Swing and coordinate vacuum to stand the homogeneity to ensure whole oil displacement system and stability.
Detailed description of the invention
Below by detailed description of the invention, the present invention will be further described.
In the present invention, if not refering in particular to, all percentage ratios are unit of weight, all devices and raw material
Buy from market or the industry is conventional, the method in following embodiment, if no special instructions, it is this
Field conventional method, wherein, the epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer in each embodiment can pass through
(preparation of a kind of sulfonic acid polyether surfactant and dynamic surface tension, old state just etc., applied chemistry,
The 2nd phase of volume 24 in February, 2007) described in preparation method be prepared.
Embodiment 1
A kind of complexed surfactant oil displacement system, it is made up of the component of following weight/mass percentage composition: fat
Polyoxyethylenated alcohol 0.5%, alkylphenol polyoxyethylene 0.1%, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymerization
Thing 5%, isopropanol 2%, injects water surplus.
This complexed surfactant oil displacement system prepares by the following method: by fatty alcohol-polyoxyethylene ether, alkane
Base phenol polyethenoxy ether, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer are mixed by proportioning with organic cosolvent
After, add the water of surplus, under vacuum condition, after sonic oscillation 10min, stand 1h.
Embodiment 2
A kind of complexed surfactant oil displacement system, it is made up of the component of following weight/mass percentage composition: fat
Polyoxyethylenated alcohol 0.7%, alkylphenol polyoxyethylene 0.2%, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymerization
Thing 6%, isopropanol 3%, injects water surplus.
This complexed surfactant oil displacement system prepares by the following method: by fatty alcohol-polyoxyethylene ether, alkane
Base phenol polyethenoxy ether, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer are mixed by proportioning with organic cosolvent
After, add the water of surplus, under vacuum condition, after sonic oscillation 20min, stand 1.5h.
Embodiment 3
A kind of complexed surfactant oil displacement system, it is made up of the component of following weight/mass percentage composition: fat
Polyoxyethylenated alcohol 1%, alkylphenol polyoxyethylene 0.3%, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer
7%, butanol 4%, injects water surplus.
This complexed surfactant oil displacement system prepares by the following method: by fatty alcohol-polyoxyethylene ether, alkane
Base phenol polyethenoxy ether, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether copolymer are mixed by proportioning with organic cosolvent
After, add the water of surplus, under vacuum condition, after sonic oscillation 30min, stand 2h.
The concrete application process of the present invention is: after water drive, then tuberculosis 0.3～0.5PV (rock pore volume)
Alkali-free hyposmosis displacing surfactant system of the present invention carry out the displacement of reservoir oil.
Imitation oil displacement experiment is tested
The oil displacement system obtained each embodiment respectively is simulated oil displacement test, the method for imitation oil displacement experiment test
For: with simulation water, (simulation water ion consists of: Na+With K+For 3091.96mg/L, Ca2+For 276.17mg/L,
Mg2+For 158.68mg/L, CO3 2+For 14.21mg/L, HCO3 -For 311.48mg/L, SO4 2-For 85.92mg/L,
C1-It is 9374.13 for 5436.34mg/L, TDS) by saturated for rock core (tri-layers of heterogeneous body side's rock core of 30cm),
Measuring the pore volume (115.78ml) of rock core, then crude oil (1700mpa.s, 65 DEG C) carries out saturated,
Being simulated the displacement of reservoir oil at 65 DEG C, first water drive to water content is 95%, surveys water drive and improves crude oil taking rate, then
The oil displacement system that tuberculosis 0.3PV (rock pore volume) each embodiment obtains, the displacement of reservoir oil to water content more than 98%,
Survey and can improve oil recovery factor on the basis of water drive again, shown in result of the test following table:
| Project | Oil recovery factor after water drive | Improve recovery ratio |
| Embodiment 1 | 26.12% | 57.41% |
| Embodiment 2 | 25.43% | 58.32% |
| Embodiment 3 | 26.48% | 60.4% |
As can be seen from the table, under conditions of high salt, high temperature, the tuberculosis present invention's is active without composite surface
After agent oil displacement system, oil recovery factor can be improved more than at least 57%, the complexed surfactant of the present invention is described
It is good with salt resistant character that oil displacement system is high temperature resistant, and permeability is strong with the ability of emulsion dispersion crude oil, interfacial activity
High with oil displacement efficiency, the recovery ratio of crude oil can be greatly improved.
Embodiment described above is the one preferably scheme of the present invention, and the present invention not makees any shape
Restriction in formula, on the premise of without departing from the technical scheme described in claim also have other variant and
Remodeling.
Claims (4)
1. a complexed surfactant oil displacement system, it is characterised in that it is by following weight/mass percentage composition
Component forms: fatty alcohol-polyoxyethylene ether 0.5～1%, alkylphenol polyoxyethylene 0.1～0.3%, epoxy the third sulphur
Acid glycidyl butyl ether copolymer 5～7%, organic cosolvent 2～4%, injects water surplus.
A kind of complexed surfactant oil displacement system the most according to claim 1, it is characterised in that institute
Stating organic cosolvent is butanol or isopropanol.
3. a preparation method for complexed surfactant oil displacement system as claimed in claim 1, its feature
It is, by fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, epoxy propane sulfonic acid (+)-2,3-Epoxy-1-propanol butyl ether
After copolymer is mixed by proportioning with organic cosolvent, add the injection water of surplus, after sonic oscillation 10～30min
1～2h is stood under vacuum condition.
4. a complexed surfactant oil displacement system as claimed in claim 1 application when three displacement of reservoir oils.
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| CN201410271113.5A CN104017554B (en) | 2014-06-07 | 2014-06-07 | A kind of complexed surfactant oil displacement system and preparation method thereof, application |
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| CN201410271113.5A CN104017554B (en) | 2014-06-07 | 2014-06-07 | A kind of complexed surfactant oil displacement system and preparation method thereof, application |
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| CN104017554B true CN104017554B (en) | 2016-08-24 |
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| CN104830304B (en) * | 2015-05-25 | 2017-10-13 | 唐山冀油瑞丰化工有限公司 | A kind of emulsified penetration-driving oil recovery agent and preparation method thereof |
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| US3792731A (en) * | 1972-05-08 | 1974-02-19 | Texaco Inc | Secondary recovery process using surfactant mixtures |
| CN101445722B (en) * | 2008-12-30 | 2011-10-05 | 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 |
| CN101665685B (en) * | 2009-09-14 | 2012-11-14 | 天津师范大学 | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery |
| CN101705083B (en) * | 2009-11-16 | 2013-01-02 | 山东德仕化工集团有限公司 | Formulation of surfactant oil displacement system for anionic and nonionic oil displacement |
| CN102504792B (en) * | 2011-11-10 | 2013-03-13 | 西南石油大学 | Oil displacement agent for ultrahigh-temperature, high-salt, high-calcium, high-magnesium and homogeneous oil reservoirs |
| CN103666429A (en) * | 2012-09-04 | 2014-03-26 | 中国石油天然气股份有限公司 | Surfactant mixed system for displacing oil from low-permeability oilfields |
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Effective date of registration: 20160623 Address after: Taibai Road Shaanxi Beilin District 710000 city of Xi'an province No. 229 Applicant after: Northwest University Address before: Quangang District of Quanzhou City, Fujian Province town village community 362804 Huai Huai kiln No. 521 Applicant before: Lin Nanping |
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