CN103666429A - Surfactant mixed system for displacing oil from low-permeability oilfields - Google Patents
Surfactant mixed system for displacing oil from low-permeability oilfields Download PDFInfo
- Publication number
- CN103666429A CN103666429A CN201210323327.3A CN201210323327A CN103666429A CN 103666429 A CN103666429 A CN 103666429A CN 201210323327 A CN201210323327 A CN 201210323327A CN 103666429 A CN103666429 A CN 103666429A
- Authority
- CN
- China
- Prior art keywords
- oil
- mixed system
- surfactant mixed
- low
- surfactant
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
Abstract
The invention relates to a surfactant mixed system for displacing oil from low-permeability oilfields. The surfactant mixed system is composed of 30-40wt% of sodium fatty alcohol polyoxyethylene ether sulfonate, 15-20wt% of alkylphenol ethoxylates and the balance of water, wherein the mixing mass ratio of the sodium fatty alcohol polyoxyethylene ether sulfonate to the alkylphenol ethoxylates is 2:1; the surfactant mixed system and stratum dehydrated crude oil can reach an ultralow interfacial tension of 10<-3>-10<-4> mN/m within an application concentration of 0.2-0.4% at 55 DEG C; the system is scarcely affected by formation water salinity, the salt tolerance reaches 100,000 and the calcium ion resistance reaches 1600 mg/L; the system has good adsorption resistance, and the dynamic absorption loss is lower than the industry standard of 0.5 mg/g oil sands, so that the system is applicable to displacing oil from the low-permeability oilfields with high salinity and high calcium and magnesium ion concentrations.
Description
Technical field
The invention belongs to used for tertiary oil recovery oil field chemical technical field, relate to a kind of surfactant compound system, is a kind of chemical agent that is applicable to low permeability oil field displacement of reservoir oil volume increase.
Background technology
The conventional waterflood recovery efficiency factor of low permeability pay is lower, and at middle and high pervious course, successfully applies the technology (as polymer flooding etc.) that can increase substantially recovery ratio and also because injection pressure is high, formation water salinity is high, cannot apply at low permeability pay.For this reason, for improving low permeability pay recovery ratio difficulty, one of important method of improving water drive raising oil recovery factor is exactly to utilize various chemical agents, and wherein tensio-active agent is considered to improve by a relatively large margin recovery ratio, the scope of application a kind of chemical agent wider, most with prospects.
For single surfactant system, be difficult to form ultra low interfacial tension with crude oil, compound surfactant system adds alkali conventionally, and to form ultra low interfacial tension, but adding of alkali can produce new infringement again to low permeability pay.Therefore, do not add the research that alkali just can form the surfactant compound system of ultra low interfacial tension with crude oil and there is important value to improving the recovery ratio of low permeability pay.The present invention is re-dubbed surfactant system with anion sulfoacid natrium surfactant and nonionogenic tenside, and this system and stratum dewatered oil reach 10
-3～10
-4mN/m ultra low interfacial tension, and this system has resistance to high salinity, resistant to elevated temperatures advantage.
Summary of the invention
The object of this invention is to provide a kind of surfactant oil displacement compound system, by reducing oil water interfacial tension, improve displacement efficiency, for this type of reservoir waterflooding middle and later periods is realized long term stable production, further improve recovery ratio and explore new technological approaches.
1. the component of surfactant compound system and performance
(1) fatty alcohol-polyoxyethylene ether sodium sulfonate
It is the anion surfactant of high temperature resistant, the resistance to high salinity of a class, the calcium of resistance to high price, magnesium ion.
(2) alkylphenol polyoxyethylene
A nonionic surface active agent, is dissolved in oil and other organic solvent, has good emulsifying performance.
2. each constituent mass proportioning
Fatty alcohol-polyoxyethylene ether sodium sulfonate, the composite mass ratio of alkylphenol polyoxyethylene are 2:1, are 30～40% fatty alcohol-polyoxyethylene ether sodium sulfonate by mass percentage, 15～20% alkylphenol polyoxyethylene, and all the other are water.
This surfactant compound system and stratum dewatered oil, in working concentration is 0.2～0.4% scope, at 55 ℃, can reach 10
-3～10
-4mN/m ultra low interfacial tension; And this system is subject to formation water salinity variable effect less, salt tolerant reaches 100,000, and resistance to calcium ion reaches 1600mg/L; The anti-absorption property of this system is better, and dynamic adsorption loss amount is lower than industry standard 0.5mg/g oil-sand.Be suitable for high salinity, the surfactant flooding of high contents of calcium and magnesium ionic concn low-permeability oil deposit.
Embodiment
Embodiment 1
1. in whipping process, quality 17% alkylphenol polyoxyethylene is added to the water, to dissolving completely.
2. stir on limit, and, to the fatty alcohol-polyoxyethylene ether sodium sulfonate that adds quality 34% in Agitation Tank, stir 50 minutes on limit, can form surfactant soln.
The functional quality concentration of this surfactant compound system and stratum dewatered oil is in 0.3% scope, at 55 ℃, can reach 10
-3～10
-4mN/m ultra low interfacial tension.
Embodiment 2
1. in whipping process, quality 15% alkylphenol polyoxyethylene is added to the water, to dissolving completely.
2. stir on limit, and, to the fatty alcohol-polyoxyethylene ether sodium sulfonate that adds quality 30% in Agitation Tank, stir 30 minutes on limit, can form surfactant soln.
The functional quality concentration of this surfactant compound system and stratum dewatered oil is in 0.4% scope, at 55 ℃, can reach 10
-3～10
-4mN/m ultra low interfacial tension.
Embodiment 3
1. in whipping process, quality 20% alkylphenol polyoxyethylene is added to the water, to dissolving completely.
2. stir on limit, and, to the fatty alcohol-polyoxyethylene ether sodium sulfonate that adds quality 40% in Agitation Tank, stir 60 minutes on limit, can form surfactant soln.
The functional quality concentration of this surfactant compound system and stratum dewatered oil is in 0.2% scope, at 55 ℃, can reach 10
-3～10
-4mN/m ultra low interfacial tension.
Claims (1)
1. a low permeability oil field surfactant oil displacement compound system; It is characterized in that: by mass percentage by 30～40% fatty alcohol-polyoxyethylene ether sodium sulfonate, 15～20% alkylphenol polyoxyethylene, all the other are that water forms; Fatty alcohol-polyoxyethylene ether sodium sulfonate, the composite mass ratio of alkylphenol polyoxyethylene are 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323327.3A CN103666429A (en) | 2012-09-04 | 2012-09-04 | Surfactant mixed system for displacing oil from low-permeability oilfields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323327.3A CN103666429A (en) | 2012-09-04 | 2012-09-04 | Surfactant mixed system for displacing oil from low-permeability oilfields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103666429A true CN103666429A (en) | 2014-03-26 |
Family
ID=50305220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323327.3A Pending CN103666429A (en) | 2012-09-04 | 2012-09-04 | Surfactant mixed system for displacing oil from low-permeability oilfields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103666429A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017555A (en) * | 2014-06-07 | 2014-09-03 | 林南平 | Alkali-free low-permeability surfactant oil displacement system as well as preparation method and application thereof |
| CN104017554A (en) * | 2014-06-07 | 2014-09-03 | 林南平 | Composite surfactant oil-displacement system as well as preparation method and application thereof |
| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN110467910A (en) * | 2018-05-11 | 2019-11-19 | 中国石油化工股份有限公司 | Oil displacement agent composition and preparation method thereof and reducing thick oil viscosity are handled up recovery method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583942A (en) * | 2004-06-02 | 2005-02-23 | 刘玉勤 | Fuel thickening chemical producing aid and use thereof |
| CN101665685A (en) * | 2009-09-14 | 2010-03-10 | 天津师范大学 | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery |
| CN102604608A (en) * | 2011-10-19 | 2012-07-25 | 中国石油化工股份有限公司 | Water shutoff agent for extra-low permeability oil reservoir |
-
2012
- 2012-09-04 CN CN201210323327.3A patent/CN103666429A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583942A (en) * | 2004-06-02 | 2005-02-23 | 刘玉勤 | Fuel thickening chemical producing aid and use thereof |
| CN101665685A (en) * | 2009-09-14 | 2010-03-10 | 天津师范大学 | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery |
| CN102604608A (en) * | 2011-10-19 | 2012-07-25 | 中国石油化工股份有限公司 | Water shutoff agent for extra-low permeability oil reservoir |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017555A (en) * | 2014-06-07 | 2014-09-03 | 林南平 | Alkali-free low-permeability surfactant oil displacement system as well as preparation method and application thereof |
| CN104017554A (en) * | 2014-06-07 | 2014-09-03 | 林南平 | Composite surfactant oil-displacement system as well as preparation method and application thereof |
| CN104017555B (en) * | 2014-06-07 | 2017-01-04 | 林南平 | A kind of alkali-free hyposmosis displacing surfactant system and preparation method thereof, application |
| CN110467910A (en) * | 2018-05-11 | 2019-11-19 | 中国石油化工股份有限公司 | Oil displacement agent composition and preparation method thereof and reducing thick oil viscosity are handled up recovery method |
| CN110467910B (en) * | 2018-05-11 | 2021-08-06 | 中国石油化工股份有限公司 | Oil displacement agent composition, preparation method thereof and viscosity-reducing huff and puff mining method of thick oil |
| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN109207134B (en) * | 2018-10-23 | 2021-02-19 | 天津大港油田滨港集团博弘石油化工有限公司 | Surfactant composition for efficient oil displacement and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100564477C (en) | Be used for improving flooding system of recovery ratio and preparation method thereof behind the polymer flooding | |
| CN102504794B (en) | Hydrophobically associating polymer and mixed surfactant binary compound oil displacement system | |
| CN101665685B (en) | Oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery | |
| CN103254883B (en) | Oil-displacing agent and oil-displacing method for enhancing recovery ratio of high-temperature, high-salinity and high-hardness reservoir crude oil | |
| CN102977872B (en) | A kind of strengthening foam oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery and preparation method thereof | |
| CN109401742A (en) | A kind of heat-resistant salt-resistant foam profile system being formulated by highly mineralized formation brines | |
| CN103351857B (en) | A kind of salt tolerant worm-like micelle systems, its preparation method and the purposes in the displacement of reservoir oil thereof | |
| CN103540303B (en) | Composite surfactant composition as well as preparation method thereof | |
| CN104694103A (en) | Surfactant compounded system with oil reservoir adaptability | |
| CN109810685B (en) | Oil displacement agent composition and preparation method and application thereof | |
| CN103666429A (en) | Surfactant mixed system for displacing oil from low-permeability oilfields | |
| CN112226223A (en) | Surfactant composition for pressure reduction and injection increase of ultra-low permeability oil reservoir and preparation method thereof | |
| CN104449630A (en) | Surfactant composition for oil recovery and preparation method of surfactant composition | |
| CN104818008B (en) | The vesica oil displacement agent and application that a kind of anion surfactant compound system is formed | |
| CN112980420B (en) | Antihypertensive injection and preparation method thereof | |
| CN106883833B (en) | Oil displacement system for ultrahigh-temperature high rigidity oil reservoir with high salt | |
| CN102732241B (en) | Easily-degradable alkali-free viscosity reducer for thick oil and preparation method thereof | |
| CN103045221B (en) | Surfactant flooding system and application thereof | |
| CN104109520B (en) | Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof | |
| CN101899292A (en) | Novel surfactant compound system for reducing tension of oil-water interface | |
| CN106590578A (en) | Composite surfactant composition for medium-mineralization-degree reservoir oil displacement | |
| CN103224776A (en) | Oil field flooding stratum protective agent and preparation method and application thereof | |
| CN110105936B (en) | Temperature-resistant salt-tolerant foam profile control and flooding system suitable for complex oil reservoir and preparation method and application thereof | |
| CN102277149A (en) | Surfactant oil displacement agent for low-permeability oil field | |
| CN116622357A (en) | Salt-tolerant thickened oil viscosity reducing composition, viscosity reducer and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20140326 |