CN103820094A - Mixed type surface active agent and preparation method thereof - Google Patents
Mixed type surface active agent and preparation method thereof Download PDFInfo
- Publication number
- CN103820094A CN103820094A CN201310640963.3A CN201310640963A CN103820094A CN 103820094 A CN103820094 A CN 103820094A CN 201310640963 A CN201310640963 A CN 201310640963A CN 103820094 A CN103820094 A CN 103820094A
- Authority
- CN
- China
- Prior art keywords
- parts
- reaction
- aequum
- under
- carry out
- 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.)
- Granted
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
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of surface active agents, and provides a mixed type surface active agent and a preparation method thereof. The mixed type surface active agent comprises the following raw materials in parts by weight: 22-45 parts of dodecyl phenol, 2-6 parts of sodium nitrite, 2-9 parts of calcium chloride, 0.1-0.6 part of potassium hydroxide, 28-45 parts of ethylene oxide, 4-36 parts of 1-3 propane diamine, 15-55 parts of dodecyl benzenesulfonic acid, 10-45 parts of ethanol amine and 2-20 parts of absolute ethyl alcohol. The mixed type surface active agent provided by the invention is high in oil field oil-water adaptability, so that the effect of oil displacement by water can be improved without adding an alkaline agent; the presently existing surface active agent can be completely replaced, and the alkaline agent does not need to be added, so that the requirement of oil field development is met, the environment can be protected, and the mixed type surface active agent is an environment-friendly additive.
Description
Technical field
the present invention relates to technical field of surfactant, is a kind of mixed surfactant and preparation method thereof.
Background technology
the sulfonated α-olefin using on oil field at present, heavy alkylbenzene sulfonate type, sulfonated petro-leum type, the non-ionic type of sulphur hydrocarbylation, the tensio-active agents such as the alkyl phenolic resin of hydrocarbylation are poor independent Use Limitation fruit, need to add 0.1% to 2% alkaline agent, just can reach low surface tension, drip ultra low interfacial tension instrument TX500C with rotation and measure above-mentioned tensio-active agent and the compound promoting agent of alkaline agent, in the time adding the concentration of tensio-active agent to be 0.2% to 1%, can form low oil water interfacial tension < 5 × 10-2mN/m, could meet the requirement of oil field development.But in tensio-active agent, add after alkaline agent, the material in alkaline agent can with stratum in mineral substance react, easily cause stratum fouling, and form water-oil interface be difficult for breakdown of emulsion, be difficult for layering, environment is caused to great injury.
Summary of the invention
the invention provides a kind of mixed surfactant and preparation method thereof, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem that the tensio-active agent using in current oilfield water extraction process need to add alkaline agent.
one of technical scheme of the present invention realizes by following measures: a kind of mixed surfactant, raw materials by weight portion meter comprises 2 parts to 20 parts of 22 parts to 45 parts of dodecyl phenols, 2 parts to 6 parts of Sodium Nitrites, 2 parts to 9 parts, calcium chloride, 0.1 part to 0.6 part, potassium hydroxide, 28 parts to 45 parts, oxyethane, 4 parts to 36 parts of 1-3 propylene diamine, 15 parts to 55 parts of Witco 1298 Soft Acids, 10 parts to 45 parts of thanomins and dehydrated alcohols.
the further optimization and/or improvements to one of foregoing invention technical scheme below:
above-mentioned mixed surfactant obtains as follows: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, it is to carry out primary first-order equation 50min to 70min under 40 ℃ to 60 ℃ conditions that calcium chloride and potassium hydroxide mix in temperature, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa to 0.6MPa, then it is 40 ℃ to 60 ℃ in temperature, pressure is under 0.0MPa to 0.6MPa condition, to carry out secondary reaction 6h to 10h, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then be to carry out third-order reaction 5h to 8h under 130 ℃ to 160 ℃ conditions in temperature, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ to 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ to 60 ℃ conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% to 55% to adding quality in quaternary ammonium salt, after reaction 10min to 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix.
above-mentioned in the first step, primary first-order equation, secondary reaction and third-order reaction all carry out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
the reaction of above-mentioned the 3rd step is carried out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
two of technical scheme of the present invention realizes by following measures: a kind of preparation method of mixed surfactant, carry out in the steps below: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, it is to carry out primary first-order equation 50min to 70min under 40 ℃ to 60 ℃ conditions that calcium chloride and potassium hydroxide mix in temperature, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa to 0.6MPa, then it is 40 ℃ to 60 ℃ in temperature, pressure is under 0.0MPa to 0.6MPa condition, to carry out secondary reaction 6h to 10h, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then be to carry out third-order reaction 5h to 8h under 130 ℃ to 160 ℃ conditions in temperature, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ to 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ to 60 ℃ conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% to 55% to adding quality in quaternary ammonium salt, after reaction 10min to 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix, wherein, raw materials by weight portion meter comprises 2 parts to 20 parts of 22 parts to 45 parts of dodecyl phenols, 2 parts to 6 parts of Sodium Nitrites, 2 parts to 9 parts, calcium chloride, 0.1 part to 0.6 part, potassium hydroxide, 28 parts to 45 parts, oxyethane, 4 parts to 36 parts of 1-3 propylene diamine, 15 parts to 55 parts of Witco 1298 Soft Acids, 10 parts to 45 parts of thanomins and dehydrated alcohols.
two the further optimization and/or improvements to foregoing invention technical scheme below:
above-mentioned in the first step, primary first-order equation, secondary reaction and third-order reaction all carry out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
the reaction of above-mentioned the 3rd step is carried out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
mixed surfactant in the present invention is to oil field oil water strong adaptability; need not add alkaline agent; just can improve water displacing oil effect; can replace current existing tensio-active agent completely; and do not need to add alkaline agent; to meet the requirement of oil field development, and energy protection of the environment, be a kind of environmentally friendly additive.
Embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and practical situation.
below in conjunction with embodiment, the invention will be further described:
embodiment 1, the raw materials by weight portion meter of this mixed surfactant comprises 2 parts to 20 parts of 22 parts to 45 parts of dodecyl phenols, 2 parts to 6 parts of Sodium Nitrites, 2 parts to 9 parts, calcium chloride, 0.1 part to 0.6 part, potassium hydroxide, 28 parts to 45 parts, oxyethane, 4 parts to 36 parts of 1-3 propylene diamine, 15 parts to 55 parts of Witco 1298 Soft Acids, 10 parts to 45 parts of thanomins and dehydrated alcohols.
embodiment 2, the raw materials by weight portion meter of this mixed surfactant comprises 2 parts or 20 parts of 10 parts of 15 parts of 4 parts of 28 parts, 0.1 part, 2 parts, 2 parts of 22 parts of dodecyl phenols or 45 parts, Sodium Nitrites or 6 parts, calcium chloride or 9 parts, potassium hydroxide or 0.6 part, oxyethane or 45 parts, 1-3 propylene diamine or 36 parts, Witco 1298 Soft Acids or 55 parts, thanomins or 45 parts and dehydrated alcohols.
embodiment 3, be with the difference of embodiment 1 and embodiment 2, this mixed surfactant obtains by following preparation method: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, it is to carry out primary first-order equation 50min to 70min under 40 ℃ to 60 ℃ conditions that calcium chloride and potassium hydroxide mix in temperature, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa to 0.6MPa, then it is 40 ℃ to 60 ℃ in temperature, pressure is under 0.0MPa to 0.6MPa condition, to carry out secondary reaction 6h to 10h, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then be to carry out third-order reaction 5h to 8h under 130 ℃ to 160 ℃ conditions in temperature, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ to 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ to 60 ℃ conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% to 55% to adding quality in quaternary ammonium salt, after reaction 10min to 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix.
embodiment 4, be with the difference of embodiment 1 and embodiment 2, this mixed surfactant obtains by following preparation method: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, calcium chloride and potassium hydroxide mix under temperature is 40 ℃ or 60 ℃ of conditions and carry out primary first-order equation 50min or 70min, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa or 0.6MPa, then it is 40 ℃ or 60 ℃ in temperature, pressure is to carry out secondary reaction 6h or 10h under 0.0MPa or 0.6MPa condition, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then under being 130 ℃ or 160 ℃ of conditions, temperature carries out third-order reaction 5h or 8h, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ or 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ or 60 ℃ of conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% or 55% to adding quality in quaternary ammonium salt, after reaction 10min or 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix.
embodiment 5, as the optimization of embodiment 3 and embodiment 4, in the first step, primary first-order equation, secondary reaction and third-order reaction all carry out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
embodiment 6, as the optimization of embodiment 3, embodiment 4 and embodiment 5, the reaction of the 3rd step is carried out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
the present invention is to oil field oil water strong adaptability, need not add alkaline agent, just can improve water displacing oil effect, when use, while adding the mixed surfactant concentration obtaining according to the embodiment of the present invention to be 0.2% to 1%, dripping ultra low interfacial tension instrument TX500C with rotation measures, data show, use the mixed surfactant obtaining according to the embodiment of the present invention can form low oil water interfacial tension < 5 × 10-2mN/m, on indoor flooding apparatus, measure by industry (SY/T5277-2000) standard that to obtain displacement of reservoir oil rate mean value be 10% to 23%, and average energy improves 18% recovery ratio, this has absolutely proved that the mixed surfactant obtaining according to the embodiment of the present invention can replace current existing tensio-active agent completely, and do not need to add alkaline agent, to meet the requirement of oil field development, and energy protection of the environment, be a kind of environmentally friendly additive.
above technical characterictic has formed embodiments of the invention, and it has stronger adaptability and implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (7)
1. a mixed surfactant, is characterized in that raw materials by weight portion meter comprises 2 parts to 20 parts of 22 parts to 45 parts of dodecyl phenols, 2 parts to 6 parts of Sodium Nitrites, 2 parts to 9 parts, calcium chloride, 0.1 part to 0.6 part, potassium hydroxide, 28 parts to 45 parts, oxyethane, 4 parts to 36 parts of 1-3 propylene diamine, 15 parts to 55 parts of Witco 1298 Soft Acids, 10 parts to 45 parts of thanomins and dehydrated alcohols.
2. mixed surfactant according to claim 1, it is characterized in that obtaining as follows: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, it is to carry out primary first-order equation 50min to 70min under 40 ℃ to 60 ℃ conditions that calcium chloride and potassium hydroxide mix in temperature, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa to 0.6MPa, then it is 40 ℃ to 60 ℃ in temperature, pressure is under 0.0MPa to 0.6MPa condition, to carry out secondary reaction 6h to 10h, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then be to carry out third-order reaction 5h to 8h under 130 ℃ to 160 ℃ conditions in temperature, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ to 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ to 60 ℃ conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% to 55% to adding quality in quaternary ammonium salt, after reaction 10min to 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix.
3. mixed surfactant according to claim 2, is characterized in that in the first step, primary first-order equation, secondary reaction and third-order reaction all carry out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
4. according to the mixed surfactant described in claim 2 or 3, it is characterized in that the reaction of the 3rd step is carried out under whipped state, stir speed (S.S.) is 150r/min to 200r/min.
5. the preparation method of a mixed surfactant according to claim 1, it is characterized in that carrying out in the steps below: the first step, by the dodecyl phenol of aequum, Sodium Nitrite, it is to carry out primary first-order equation 50min to 70min under 40 ℃ to 60 ℃ conditions that calcium chloride and potassium hydroxide mix in temperature, after primary first-order equation completes, add wherein the oxyethane of aequum, in adition process, guarantee that pressure maintains 0.0MPa to 0.6MPa, then it is 40 ℃ to 60 ℃ in temperature, pressure is under 0.0MPa to 0.6MPa condition, to carry out secondary reaction 6h to 10h, after secondary reaction completes, add wherein the 1-3 propylene diamine of aequum, then be to carry out third-order reaction 5h to 8h under 130 ℃ to 160 ℃ conditions in temperature, after completing, third-order reaction obtains non-positive promoting agent, and non-positive promoting agent is cooled to 40 ℃ to 60 ℃, second step obtains quaternary ammonium salt after temperature is under 40 ℃ to 60 ℃ conditions, the Witco 1298 Soft Acid of aequum and thanomin to be mixed, the 3rd step, is the non-positive promoting agent of quaternary ammonium salt quality 25% to 55% to adding quality in quaternary ammonium salt, after reaction 10min to 25min, then obtains mixed surfactant after adding wherein the dehydrated alcohol of aequum to mix.
6. the preparation method of the mixed surfactant of stating according to claim 5, is characterized in that in the first step, primary first-order equation, secondary reaction and third-order reaction all carry out under whipped state, and stir speed (S.S.) is 150r/min to 200r/min.
7. according to the preparation method of the mixed surfactant described in claim 5 or 6, it is characterized in that the reaction of the 3rd step is carried out under whipped state, stir speed (S.S.) is 150r/min to 200r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640963.3A CN103820094B (en) | 2013-12-04 | 2013-12-04 | Mixed surfactant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640963.3A CN103820094B (en) | 2013-12-04 | 2013-12-04 | Mixed surfactant and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103820094A true CN103820094A (en) | 2014-05-28 |
| CN103820094B CN103820094B (en) | 2016-03-02 |
Family
ID=50755396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310640963.3A Active CN103820094B (en) | 2013-12-04 | 2013-12-04 | Mixed surfactant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103820094B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2093670C1 (en) * | 1995-01-10 | 1997-10-20 | Научно-исследовательский институт "Нефтеотдача" | Method of improving efficiency of oil displacement by non-ionogenic oil-soluble surface-active materials |
| CN1373173A (en) * | 2001-02-28 | 2002-10-09 | 大庆开发区鑫诺精细化工有限公司 | Oil-displacing surfactant system for increasing recovery ratio of crude |
| CN1865392A (en) * | 2006-06-15 | 2006-11-22 | 中国石化股份胜利油田分公司地质科学研究院 | Highly effective mixed oil expellant applied to tertiary oil recovery and its preparation method |
| CN101885963A (en) * | 2010-07-05 | 2010-11-17 | 西安秦荣石化科技有限公司 | High-efficiency oil displacement agent |
| CN102206483A (en) * | 2011-04-11 | 2011-10-05 | 西南石油大学 | Surfactant/polymer water repellent identification composite oil displacement agent and preparation method thereof |
| CN102604620A (en) * | 2012-02-10 | 2012-07-25 | 胜利油田中胜环保有限公司 | Petroleum sulfonate compounded system for oil displacement and preparation method thereof |
| CN102895913A (en) * | 2012-09-28 | 2013-01-30 | 西南石油大学 | Cation type dimeric surfactant containing polyoxyethylene ether and synthetizing method of cation type dimeric surfactant |
-
2013
- 2013-12-04 CN CN201310640963.3A patent/CN103820094B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2093670C1 (en) * | 1995-01-10 | 1997-10-20 | Научно-исследовательский институт "Нефтеотдача" | Method of improving efficiency of oil displacement by non-ionogenic oil-soluble surface-active materials |
| CN1373173A (en) * | 2001-02-28 | 2002-10-09 | 大庆开发区鑫诺精细化工有限公司 | Oil-displacing surfactant system for increasing recovery ratio of crude |
| CN1865392A (en) * | 2006-06-15 | 2006-11-22 | 中国石化股份胜利油田分公司地质科学研究院 | Highly effective mixed oil expellant applied to tertiary oil recovery and its preparation method |
| CN101885963A (en) * | 2010-07-05 | 2010-11-17 | 西安秦荣石化科技有限公司 | High-efficiency oil displacement agent |
| CN102206483A (en) * | 2011-04-11 | 2011-10-05 | 西南石油大学 | Surfactant/polymer water repellent identification composite oil displacement agent and preparation method thereof |
| CN102604620A (en) * | 2012-02-10 | 2012-07-25 | 胜利油田中胜环保有限公司 | Petroleum sulfonate compounded system for oil displacement and preparation method thereof |
| CN102895913A (en) * | 2012-09-28 | 2013-01-30 | 西南石油大学 | Cation type dimeric surfactant containing polyoxyethylene ether and synthetizing method of cation type dimeric surfactant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103820094B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100571820C (en) | High-concentration cold-resistant sea-water type water-to-film foam fire extinguishant | |
| CN104232045B (en) | Composite surface active agent composition and preparation method and application thereof | |
| CN105854216B (en) | Aqueous film-forming foam extinguishing agent based on short carbon fluorine chain | |
| CN100564476C (en) | A kind of tensio-active agent and the formula system in oil production technology | |
| CN107603581B (en) | Efficient foam drainage agent composition and preparation method and application thereof | |
| CN105670590B (en) | A kind of three-component compound system suitable for high temperature and high salinity oil reservoir, surfactant and preparation method thereof | |
| CN103882437B (en) | Oil-gas gathering and transferring pipeline inhibiter and preparation method thereof | |
| CN106318358A (en) | Green and environmentally friendly foam oil displacement system based on alkyl glycoside and preparation method and application thereof | |
| CN109504360B (en) | Thick oil viscosity reducer and preparation method and application thereof | |
| US11254858B2 (en) | Stabilized foams with tailored water chemistry for mobility control in gas injection processes | |
| CN103509544A (en) | Foamed acid, its preparation and use methods | |
| CN111732947A (en) | Efficient foaming agent for fracturing and preparation method thereof | |
| CN104745168A (en) | High-temperature-resistant low-tension foam oil-displacing agent and application thereof | |
| CN103820094A (en) | Mixed type surface active agent and preparation method thereof | |
| CN107916096B (en) | Viscoelastic surfactant composition for oil displacement and preparation method and application thereof | |
| CN114990554A (en) | Neutralization corrosion inhibitor and preparation method and application thereof | |
| CN104528961A (en) | Scale and corrosion inhibitor for oilfield reinjection water and preparation method thereof | |
| CN104974729A (en) | Ternary composite oil displacement agent | |
| CN104559987A (en) | Amide polyoxyethylene ether sulfonate betaine surfactant | |
| CN104276985A (en) | Polyoxyethylene ether-containing hydroxypropyl anilino sulfonate betaine and preparation method | |
| CN103525388A (en) | Chemical formula for eliminating hydrogen sulfide in pit shaft | |
| CN102205214A (en) | N,N-dialkyl propanamide fatty alkyl betaine amphoteric surfactant, preparation method and application thereof in tertiary recovery | |
| CN109423267B (en) | Vapor phase corrosion inhibitor and preparation method thereof | |
| US8389448B1 (en) | Anionic ether amines and process for using same | |
| CN107916097A (en) | Displacement of reservoir oil viscoelasticity betaine surfactant composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Mixed surfactant and its preparation method Effective date of registration: 20210625 Granted publication date: 20160302 Pledgee: Karamay Petroleum Branch of Bank of China Ltd. Pledgor: KARAMAY ZHENGCHENG Co.,Ltd. Registration number: Y2021980005336 |