CN101580736A - Low-temperature demulsifier for dehydration of produced liquid by polymer flooding and preparation method thereof - Google Patents
Low-temperature demulsifier for dehydration of produced liquid by polymer flooding and preparation method thereof Download PDFInfo
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- CN101580736A CN101580736A CNA2009100857451A CN200910085745A CN101580736A CN 101580736 A CN101580736 A CN 101580736A CN A2009100857451 A CNA2009100857451 A CN A2009100857451A CN 200910085745 A CN200910085745 A CN 200910085745A CN 101580736 A CN101580736 A CN 101580736A
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- dehydration
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Abstract
A low-temperature demulsifier for dehydration of produced liquid by polymer flooding in the oil field is characterized in that the demulsifier comprises the following components according to the weight percentage: 15.0-25% of demulsifier SAP 1187; 17-25% of demulsifier PFA311; 12-16% of demulsifier 101; 0.04-0.1% of alkyl amidopropyl betaine; 0.05-0.08% of iron dichloride; 0.06-0.09% of Vitamin C; 0.08-0.15% of fluorocarbon surfactant FN-3 and the balance of water. The invention has the following effects: when the temperature of produced liquid by polymer flooding is 40 DEG C and the dosage is 50-70mg/l, the water content of the dehydrated crude oil is less than 0.2% and the oil content of the separated sewage is less than 500mg/l.
Description
Technical field
The invention belongs to petroleum industry chemical technical field, relate to a kind of dehydrating of crude oil treatment agent, relate in particular to component of a kind of poly-flooding produced liquid dehydrating of crude oil low-temperature demulsifying agent and preparation method thereof.
Background technology
Domestic many oil fields enter development late stage, Oil extraction has entered high water-cut stage, for improving the latter period of oilfield development reservoir coverage, can obtain some workable reserve, improve oil recovery factor, the production technique personnel have adopted intensified oil reduction technology such as steam flood, polymer flooding, surfactant flooding and ternary composite driving.Adopt the way of polymer flooding many.As polymer flooding modes such as weak gel profile drives have been carried out in some oil fields.Polymer flooding causes containing the multiple polymers composition in the crude oil extraction liquid, make the crude oil emulsion water content increase severely, especially the existence of chemical oil displacement agent is become better and better the stability of crude oil emulsion, the breakdown of emulsion difficulty increases, the dehydrating of crude oil difficulty increases, and existing emulsion splitter far can not adapt to the needs of the breaking emulsion and dewatering processing of high water-content crude oil or viscous crude, waxy crude oil.Someone adopts and strengthens the emulsion splitter consumption, or adopts the temperature that improves demulsification technology, yet the dewatering speed of these ways and dehydrating effect are unsatisfactory.When extraction fluid dewatering emulsion splitter was 50-70mg/l at 50-55 ℃ of dosage, it was moisture less than 0.5% just to make crude oil take off the back, and sewage with oil is less than 300mg/l; But can not reach the standard-required of national energy-saving and emission-reduction.
Summary of the invention
The objective of the invention is: a kind of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is provided, and at a lower temperature, in the time of 40～43 ℃, dosage makes after the dehydrating of crude oil moisturely less than 0.2% when 50-70mg/l, and isolating sewage with oil is less than 500mg/l; Make sewage can reach the standard-required of national energy-saving and emission-reduction.
The technical scheme of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
One, low-temperature demulsifier for dehydration of produced liquid by polymer flooding raw material:
1, emulsion splitter SAP1187 (industrial goods), another name: the condenses of polyethylene polyamine polyoxyethylene poly-oxygen propylene aether and silicone oil (Huang Hongzhou edits Chinese tensio-active agent overview one book, the 473rd page of Chemical Industry Press);
Purposes: crude oil low temperature dewatering desalting agent.
Production unit: general petrochemical works, Jingzhou City.
2, emulsion splitter PFA311 (industrial goods), another name: the reactant of organic aldehyde, amine, phenol etc. is the polyoxyethylene polyoxypropylene ether of initiator.(Huang Hongzhou edits Chinese tensio-active agent overview one book, the 475th page of Chemical Industry Press);
Purposes: the agent of lesser temps breaking emulsion and dewatering also has viscosity reduction, wax control effect.
Production unit: shore, Shandong group company.
3, emulsion splitter 101 (industrial goods), another name: rosin Amine D polyoxyethylene polyoxypropylene ether (Huang Hongzhou edits Chinese tensio-active agent overview one book, the 475th page of Chemical Industry Press);
Character: low temperature, fast, high-efficient demulsifier, be applicable to the dewatering agent of intermediate base and paraffinic crude.
Production unit: general petrochemical works, Xi'an
4, alkylamide propyl-betaine (industrial goods), another name: GW.BS-12K (Huang Hongzhou edits Chinese tensio-active agent overview one book, the 538th page of Chemical Industry Press);
Character: the new type amphoteric surfactant of a kind of excellent property in the alkylamide propyl-betaine series product, can with positively charged ion, negatively charged ion, tween compatibility, have good washing conditioning, antistatic and germicidal action.Purposes: be highly suitable for preparing shampoo, bathe agent, cleansing milk, baby's articles for washing etc.
Production unit: Shanghai higher-dimension daily use chemicals raw material company; Shanghai higher-dimension company Fine Chemical Works; Dandong institute of daily chemical industry company
5, iron protochloride (industrial goods)
6, vitamins C (industrial goods)
7, fluorocarbon surfactant FN-3 (industrial goods) (Huang Hongzhou edits Chinese tensio-active agent overview one book, the 463rd page of Chemical Industry Press);
Purposes: wetting agent, dispersion agent, pore forming material, sterilant.
8, water.
The each component weight ratio of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
1, emulsion splitter SAP1187 (industrial goods): 15.0～25%;
2, emulsion splitter PFA311 (industrial goods): 17～25%;
3, emulsion splitter 101 (industrial goods): 12～16%;
4, alkylamide propyl-betaine (industrial goods): 0.04～0.1%;
5, iron protochloride (industrial goods): 0.05～0.08%;
6, vitamins C (industrial goods): 0.06～0.09%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.08～0.15%;
8, all the other are water; Each weight percentages of components sum is 100%.
Two, the preparation method of low-temperature demulsifier for dehydration of produced liquid by polymer flooding
Major equipment:
Enamel reaction still with 2000L of stirring, heating, cooling and vacuum system.
Production method:
At first, emulsion splitter SAP1187, emulsion splitter PFA311, emulsion splitter 101 are added enamel reaction still in proportion.Slowly be warmed up to 55～65 ℃.Secondly, under constantly stirring, add 5% of water inventory earlier, continue to stir after 30 minutes, add alkylamide propyl-betaine, the stirring of vitamins C limit edged more successively in proportion, add fluorocarbon surfactant FN-3, iron protochloride then successively in proportion and stir after 30 minutes, add remaining water at last, stirs and stop after 30 minutes heating, stir while cooling off, be cooled to normal temperature.Obtain low-temperature demulsifier for dehydration of produced liquid by polymer flooding.
The using method of low-temperature demulsifier for dehydration of produced liquid by polymer flooding: when poly-repelling crude oil extraction fluid dewatering temperature was 40～43 ℃, dosage was 50-70mg/l, can make extraction liquid breakdown of emulsion, and on-the-spot those of ordinary skill can use.
The invention has the beneficial effects as follows: cryogenic dewatering emulsion splitter of the present invention, adopt between the composite demulsifying agent, composite demulsifying agent and alkylamide propyl-betaine act synergistically jointly, make cryogenic dewatering emulsion splitter breakdown of emulsion of the present invention, water separation capability is strong, adapt to the poly-repelling crude oil extraction fluid dewatering of low temperature, when the extraction fluid dewatering temperature of polymer flooding is 40～43 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 50～70mg/l, make crude oil water containing after the dehydration less than 0.2%, isolated sewage with oil is less than 500mg/l, every index is better than the petroleum industry standard, and (high-quality crude is moisture less than 0.5%, and qualified crude oil water containing is less than 1.0%; Take off the back sewage with oil less than 500mg/l).Make sewage can reach the standard-required of national energy-saving and emission-reduction.
Embodiment
Embodiment 1: each weight percentages of components of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is respectively:
1, emulsion splitter SAP1187 (industrial goods): 16%;
2, emulsion splitter PFA311 (industrial goods): 25%;
3, emulsion splitter 101 (industrial goods): 12%;
4, alkylamide propyl-betaine (industrial goods): 0.05%;
5, iron protochloride (industrial goods): 0.05%;
6, vitamins C (industrial goods): 0.06%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.09%;
8, water: 46.75%.
The preparation method:
At first, emulsion splitter SAP1187, emulsion splitter PFA311, emulsion splitter 101 are added enamel reaction still in proportion.Slowly be warmed up to 62 ℃.Secondly, under constantly stirring, add 5% of water inventory earlier, continue to stir after 30 minutes, add alkylamide propyl-betaine, the stirring of vitamins C limit edged more successively in proportion, add fluorocarbon surfactant FN-3, iron protochloride then successively in proportion and stir after 30 minutes, add remaining water at last, stirs and stop after 30 minutes heating, stir while cooling off, be cooled to normal temperature.Obtain low-temperature demulsifier for dehydration of produced liquid by polymer flooding.
Effect: the extraction fluid dewatering temperature at polymer flooding is 41 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 58mg/l, makes crude oil water containing after the dehydration less than 0.2%, and isolated sewage with oil is less than 450mg/l.
Embodiment 2: the preparation method is identical with embodiment 1, and each weight percentages of components of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
1, emulsion splitter SAP1187 (industrial goods): 19%;
2, emulsion splitter PFA311 (industrial goods): 22%;
3, emulsion splitter 101 (industrial goods): 13%;
4, alkylamide propyl-betaine (industrial goods): 0.06%;
5, iron protochloride (industrial goods): 0.05%;
6, vitamins C (industrial goods): 0.06%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.1%;
8, water: 45.73%.
Effect: the extraction fluid dewatering temperature at polymer flooding is 41 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 57mg/l, makes crude oil water containing after the dehydration less than 0.2%, and isolated sewage with oil is less than 500mg/l.
Embodiment 3: the preparation method is identical with embodiment 1, and each weight percentages of components of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
1, emulsion splitter SAP1187 (industrial goods): 20%;
2, emulsion splitter PFA311 (industrial goods): 21%;
3, emulsion splitter 101 (industrial goods): 14%;
4, alkylamide propyl-betaine (industrial goods): 0.07%;
5, iron protochloride (industrial goods): 0.06%;
6, vitamins C (industrial goods): 0.07%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.11%;
8, water: 44.69%.
Effect: the extraction fluid dewatering temperature at polymer flooding is 43 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 65mg/l, makes crude oil water containing after the dehydration less than 0.2%, and isolated sewage with oil is less than 480mg/l.
Embodiment 4: the preparation method is identical with embodiment 1, and each weight percentages of components of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
1, emulsion splitter SAP1187 (industrial goods): 23%;
2, emulsion splitter PFA311 (industrial goods): 19%;
3, emulsion splitter 101 (industrial goods): 15%;
4, alkylamide propyl-betaine (industrial goods): 0.09%;
5, iron protochloride (industrial goods): 0.07%;
6, vitamins C (industrial goods): 0.08%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.13%;
8, water: 42,63%.
Effect: the extraction fluid dewatering temperature at polymer flooding is 41.5 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 60mg/l, makes crude oil water containing after the dehydration less than 0.2%, and isolated sewage with oil is less than 460mg/l.
Embodiment 5: the preparation method is identical with embodiment 1, and each weight percentages of components of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is:
1, emulsion splitter SAP1187 (industrial goods): 25%;
2, emulsion splitter PFA311 (industrial goods): 17%;
3, emulsion splitter 101 (industrial goods): 16%;
4, alkylamide propyl-betaine (industrial goods): 0.1%;
5, iron protochloride (industrial goods): 0.08%;
6, vitamins C (industrial goods): 0.09%;
7, fluorocarbon surfactant FN-3 (industrial goods): 0.15%;
8, water: 41.58%.
Effect: the extraction fluid dewatering temperature at polymer flooding is 43 ℃, when the dosage of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is 59mg/l, makes crude oil water containing after the dehydration less than 0.2%, and isolated sewage with oil is less than 470mg/l.
Utilize the present invention on probation at the extraction liquid joint station of the polymer flooding of North China Oilfield from March, 2008, when the extraction liquid temp of polymer flooding is 40～43 ℃, this cryogenic dewatering emulsion splitter dosage is 50-70mg/l, it is moisture less than 0.2% that crude oil takes off the back, and isolated sewage with oil is less than 500mg/l.
Claims (2)
1, a kind of low-temperature demulsifier for dehydration of produced liquid by polymer flooding is characterized in that: each weight percentages of components is:
Emulsion splitter SAP1187:15.0～25%;
Emulsion splitter PFA311:17～25%;
Emulsion splitter 101:12～16%;
Alkylamide propyl-betaine: 0.04～0.1%;
Iron protochloride: 0.05～0.08%;
Vitamins C: 0.06～0.09%;
Fluorocarbon surfactant FN-3:0.08～0.15%;
All the other are water; Each weight percentages of components sum is 100%.
2, the preparation method of low-temperature demulsifier for dehydration of produced liquid by polymer flooding as claimed in claim 1 is characterized in that: at first, emulsion splitter SAP1187, emulsion splitter PFA311, emulsion splitter 101 are added enamel reaction still in proportion.Slowly be warmed up to 55～65 ℃.Secondly, under constantly stirring, add 5% of entry gross weight earlier, continue to stir after 30 minutes, add alkylamide propyl-betaine, the stirring of vitamins C limit edged more successively in proportion, add fluorocarbon surfactant FN-3, iron protochloride then successively in proportion and stir after 30 minutes, add remaining water at last, stirs and stop after 30 minutes heating, stir while cooling off, be cooled to normal temperature.Obtain low-temperature demulsifier for dehydration of produced liquid by polymer flooding.
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Cited By (8)
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| CN102260523A (en) * | 2011-06-23 | 2011-11-30 | 中国石油天然气股份有限公司 | Crude oil dehydrating low-temperature emulsion breaker and preparation method thereof |
| CN103803766A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Environment-friendly low temperature oil sludge demulsifier and preparation method thereof |
| CN104312617A (en) * | 2014-10-02 | 2015-01-28 | 青岛蓬勃石油技术服务有限公司 | Oil quality purifying agent for crude oil and preparation method of oil quality purifying agent |
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| CN108277041A (en) * | 2018-02-26 | 2018-07-13 | 四川锦盛油田技术服务有限公司 | A kind of gas field adopt defeated water-soluble demulsifier, preparation method and application |
| CN108350348A (en) * | 2015-08-26 | 2018-07-31 | 罗地亚经营管理公司 | High-performance environment-friendly non-emulsifiers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183820A (en) * | 1972-10-18 | 1980-01-15 | Th. Goldschmidt Ag | Use of demulsifying mixtures for breaking petroleum emulsions |
| US4382853A (en) * | 1981-12-02 | 1983-05-10 | Texaco Inc. | Demulsification of bitumen emulsions using combinations of chemical agents |
| CN101029252B (en) * | 2007-03-23 | 2010-07-21 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
| CN101338218B (en) * | 2008-08-07 | 2012-07-18 | 中国石油天然气股份有限公司 | Biochemical emulsion breaker |
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2009
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| CN102260523A (en) * | 2011-06-23 | 2011-11-30 | 中国石油天然气股份有限公司 | Crude oil dehydrating low-temperature emulsion breaker and preparation method thereof |
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| CN104650837A (en) * | 2013-11-15 | 2015-05-27 | 中国石油天然气股份有限公司 | Blocking remover for removing blockage in polymer flooding well region and its preparation method and use |
| CN104312617A (en) * | 2014-10-02 | 2015-01-28 | 青岛蓬勃石油技术服务有限公司 | Oil quality purifying agent for crude oil and preparation method of oil quality purifying agent |
| CN104479733A (en) * | 2014-12-29 | 2015-04-01 | 江苏健神生物农化有限公司 | Oil antibacterial cleaning agent and preparation method thereof |
| CN104479733B (en) * | 2014-12-29 | 2016-11-23 | 烟台史密得机电设备制造有限公司 | Oil antibacterial purifying agent and preparation method thereof |
| CN108350348A (en) * | 2015-08-26 | 2018-07-31 | 罗地亚经营管理公司 | High-performance environment-friendly non-emulsifiers |
| CN108277041A (en) * | 2018-02-26 | 2018-07-13 | 四川锦盛油田技术服务有限公司 | A kind of gas field adopt defeated water-soluble demulsifier, preparation method and application |
| CN108277041B (en) * | 2018-02-26 | 2020-04-24 | 四川锦盛油田技术服务有限公司 | Water-soluble demulsifier for gas field exploitation and transportation, and preparation method and application thereof |
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| CN101580736B (en) | 2012-07-18 |
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