CN102161883A - Composite chemical oil displacement agent for tertiary oil recovery in oil field - Google Patents
Composite chemical oil displacement agent for tertiary oil recovery in oil field Download PDFInfo
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- CN102161883A CN102161883A CN2011100358357A CN201110035835A CN102161883A CN 102161883 A CN102161883 A CN 102161883A CN 2011100358357 A CN2011100358357 A CN 2011100358357A CN 201110035835 A CN201110035835 A CN 201110035835A CN 102161883 A CN102161883 A CN 102161883A
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Abstract
The invention provides a composite chemical oil displacement agent for tertiary oil recovery in an oil field. The oil displacement agent comprises an anion surfactant, a cation surfactant and a nonionic surfactant. The oil displacement agent is characterized in that the cation surfactant consists of branched chain alkyl quaternary ammonium salt and chlorine ions or bromine ions; the anion surfactant is hybridized sulfonate or sulfate or carboxylate with multiple ethylene oxide (EO) groups; the nonionic surfactant is a surfactant with a branched chain hydrophobic group and an EO group; and the raw materials are evenly stirred in a kettle so as to obtain the composite oil displacement agent. Through formation of zwitterion pairs, the composite displacement agent can form a compact interface absorption film, and the stability of the composite displacement agent is improved because a non-ionic surfactant is added, so that the composite displacement agent is not easy to precipitate.
Description
One, technical field
The present invention relates to tertiary oil production in oil field composite chemical oil-displacing agent.
Two, technical background
Along with the east China oil field enters high water-cut stage comprehensively, for water and oil control, the chemical displacements of reservoir oil such as surfactant activity water drive, polymer flooding and binary combination flooding are the tertiary oil recovery new technology large scale application of representative, will increase day by day as the dosage of surfactant of chemical oil displacement agent.According to triumph and the development in domestic oil field and the needs of tertiary oil recovery, the application of tensio-active agent will increase considerably, with guarantee China Petroleum strategical reajustment and from now on the several years increase production with interior long-term stable yields, development and national economy will be played an important role.At present the oil field has in the chemical displacement of reservoir oil, heavy oil gathering viscosity reduction, oily water separation and the water treatment field main type of tensio-active agent commonly used: cationic, anionic, both sexes, non-ionic type etc., applicable cases sees Table 1.The novel surfactant of development in recent years has Shuangzi, ion equity.
Table 1 table is at present lived the agent oil field in following Application for Field situation
But, problem to be solved is arranged in addition in above-mentioned 4 fields along with the further exploitation in oil field.As (1) aspect the chemical displacement of reservoir oil: vital role has been brought into play in the chemical displacement of reservoir oil in tertiary oil production in oil field, field conduct has been obtained good effect, improves recovery ratio and reaches 10-20%.But some technology also need be improved and be perfect.Daqing oil field adopts ternary composite driving (alkali, polymkeric substance, table agent alive), and tensio-active agent mainly is negatively charged ion (alkylbenzene and a heavy alkylbenzene sulfonate), but exists the injected system fouling serious, the injury stratum; Non-alkali systems table agent effect alive is undesirable.Shengli Oil Field adopts binary combination flooding (polymkeric substance, table agent alive), and tensio-active agent mainly is negatively charged ion (sulfonated petro-leum), nonionic (polyethers), but active list surface-active agent product stability and temperature resistant antisalt ability have much room for improvement.(2) heavy oil gathering viscosity reduction aspect: make a general survey of heavy oil gathering viscosity reduction delivery technology, the industrial most widely used profit heating that mainly comprises mixes defeated method, dilution method, reducing viscosity by emulsifying method, and these methods have different technology economy advantages at the different times of oil-field development.The viscosity-depression agent that the reducing viscosity by emulsifying method is used at present mainly is negatively charged ion and nonionogenic tenside, and viscosity break ratio can reach more than 95%, but can increase the difficulty of breakdown of emulsion or the inadaptability of emulsion splitter behind most viscosity reduction.(3) complicated milk sap oily water separation aspect: contain numerous emulsifiers in the chemical flooding produced liquid and cause that recovered water emulsification degree is higher, emulsification system stable, the oily water separation difficulty strengthens, the oleaginousness height of sewage after conventional treatment process (gravity coagulant precipitation) and the chemicals treatment.
And utilize based on zwitterion to, and the three component oil-displacing agents that add nonionogenic tenside can solve an above-mentioned difficult problem preferably.Since zwitterion between the effect of intensive electrical attraction, make them to tighten solid matter row, and have good micro emulsion and form ability at water-oil interface; Thereby the acquisition that helps ultra low interfacial tension is with stable.Because its characteristics of molecular structure (positive and negative charge neutralization) has good anticalcium magnesium ion ability, possessed the possibility of in the environment of the oil field of high salinity, using simultaneously.
Three, summary of the invention
Technical scheme of the present invention: oil-displacing agent of the present invention is made up of anion surfactant, cats product and nonionogenic tenside.Cats product is made up of branched-chain alkyl quaternary ammonium salt and chlorion or bromide anion; The anion surfactant city adds hydridization sulfonate or the vitriol or the carboxylate salt of several EO groups; Nonionic is the tensio-active agent that contains side chain hydrophobic grouping and EO group.Its massfraction is than being aniorfic surfactant: cationic surfactant: nonionic surface active agent=20-60: 20-60: 10-20 obtains compound oil displacement agent after stirring in still.
Characteristics of the present invention are: the right formation of zwitterion makes it can form interfacial adsorption film closely, and the adding of nonionic surface active agent has then improved its stability in concentrated water, makes it be difficult for precipitation.
Four, description of drawings
No description of drawings
Five, embodiment
Technical scheme of the present invention: oil-displacing agent of the present invention is made up of anion surfactant, cats product and nonionogenic tenside.Cats product is made up of branched-chain alkyl quaternary ammonium salt and chlorion or bromide anion; The anion surfactant city adds hydridization sulfonate or the vitriol or the carboxylate salt of several EO groups; Nonionic is the tensio-active agent that contains side chain hydrophobic grouping and EO group.Its massfraction is than being aniorfic surfactant: cationic surfactant: nonionic surface active agent=20-60: 20-60: 10-20 obtains compound oil displacement agent after stirring in still.
Embodiment 1:
For the Gudao oilfield block of Shengli Oil Field, compound oil displacement agent is made into 0.3% solution with the outer water delivery of lonely tetrad, gained solution can reduce the oil water interfacial tension of Gudao crude to 0.001-0.0002mN/m, reaches the requirement of ultra low interfacial tension.And this solution is mixed with quartz sand according to solid-to-liquid ratio 1: 3, whip attachment still can reduce the oil water interfacial tension of Gudao crude to 0.003-0.0008mN/m after 24 hours.Can continue on for the displacement of reservoir oil of practical systems.
Embodiment 2:
For the victory oil recovery field block of Shengli Oil Field, compound oil displacement agent is formulated as the solution of 0.3wt% with the Liu Laishui that sticks together, gained solution can reduce win adopt crude oil oil water interfacial tension to 0.005mN/m, reach the requirement of ultra low interfacial tension.And this solution is mixed with quartz sand according to solid-to-liquid ratio 1: 3, whip attachment still can reduce to win and adopt the oil water interfacial tension of crude oil to 0.005mN/m after 24 hours.Can continue on for the displacement of reservoir oil of practical systems.
Embodiment 3:
For the Gudong field block of Shengli Oil Field, come water to be formulated as the solution of 0.3wt% with east three compound oil displacement agent, gained solution can reduce the oil water interfacial tension of lonely eastern crude oil to 0.005-0.002mN/m, reaches the requirement of ultra low interfacial tension.And this solution is mixed with quartz sand according to solid-to-liquid ratio 1: 3, whip attachment still can reduce the oil water interfacial tension of lonely eastern crude oil to 0.01-0.006mN/m after 24 hours.Can continue on for the displacement of reservoir oil of practical systems.
Claims (1)
1. a tertiary oil production in oil field composite chemical oil-displacing agent comprises anion surfactant, cats product and nonionogenic tenside, it is characterized in that: cats product is made up of branched-chain alkyl quaternary ammonium salt and chlorion or bromide anion; The anion surfactant city adds hydridization sulfonate or the vitriol or the carboxylate salt of several EO groups; Nonionic is the tensio-active agent that contains side chain hydrophobic grouping and EO group; Its massfraction is than being aniorfic surfactant: cationic surfactant: nonionic surface active agent=20-60: 20-60: 10-20 obtains compound oil displacement agent after stirring in still.
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| CN2011100358357A CN102161883A (en) | 2011-01-28 | 2011-01-28 | Composite chemical oil displacement agent for tertiary oil recovery in oil field |
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| CN103422840A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Method of displacing oil by anionic-cationic composite surfactant |
| CN103540304A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for intensified oil production and preparation method thereof |
| CN103540305A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for chemical displacement of reservoir oil and preparation method thereof |
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
| CN103540306A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for tertiary oil recovery and preparation method thereof |
| CN103773347A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Surfactant combination for enhancing oil recovery and preparation method thereof |
| CN103773346A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Surfactant composition for high-efficiency displacement and preparation method of composition |
| CN103967463A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Strengthened oil displacement method |
| WO2014201854A1 (en) * | 2013-06-17 | 2014-12-24 | 中国石油化工股份有限公司 | Surfactant composition, and manufacturing method and application of same |
| CN104277814A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Oil-displacement surfactant composition, preparation method and application |
| CN104650841A (en) * | 2013-11-22 | 2015-05-27 | 中国石油天然气股份有限公司 | Anion and cation compound surfactant oil displacement agent |
| CN105199703A (en) * | 2015-08-24 | 2015-12-30 | 中国石油化工股份有限公司 | High-temperature-resistant low-crosslinking ternary controlling and displacing agent and preparation method thereof |
| RU2668104C1 (en) * | 2014-10-22 | 2018-09-26 | Чайна Петролеум & Кемикал Корпорейшн | Anionic-cationic-nonionic surfactant, method of its obtaining and application |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN112480896A (en) * | 2020-11-26 | 2021-03-12 | 天津大港油田滨港集团博弘石油化工有限公司 | Cardanol sulfonate surfactant oil displacement agent and preparation method thereof |
| CN115725288A (en) * | 2021-08-26 | 2023-03-03 | 中国石油化工股份有限公司 | Surfactant composition, wettability regulator, preparation method and application thereof |
| CN115975619A (en) * | 2022-12-13 | 2023-04-18 | 中国日用化学研究院有限公司 | Surfactant compound, preparation method thereof and application thereof in tertiary oil recovery |
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| CN103422840A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Method of displacing oil by anionic-cationic composite surfactant |
| CN103540303B (en) * | 2012-07-12 | 2017-02-15 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
| CN103540305A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for chemical displacement of reservoir oil and preparation method thereof |
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
| CN103540306A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for tertiary oil recovery and preparation method thereof |
| CN103540304A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Surfactant composition for intensified oil production and preparation method thereof |
| CN103540306B (en) * | 2012-07-12 | 2016-04-13 | 中国石油化工股份有限公司 | Three adopt surfactant composition and preparation method thereof |
| CN103540305B (en) * | 2012-07-12 | 2016-02-10 | 中国石油化工股份有限公司 | Surfactant composition for chemical displacement of reservoir oil and preparation method thereof |
| CN103773347A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Surfactant combination for enhancing oil recovery and preparation method thereof |
| CN103773346A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Surfactant composition for high-efficiency displacement and preparation method of composition |
| CN103773347B (en) * | 2012-10-25 | 2016-02-10 | 中国石油化工股份有限公司 | Improve oil recovery factor surfactant composition and preparation method thereof |
| CN103967463A (en) * | 2013-02-05 | 2014-08-06 | 中国石油化工股份有限公司 | Strengthened oil displacement method |
| CN103967463B (en) * | 2013-02-05 | 2016-09-07 | 中国石油化工股份有限公司 | Strengthening flooding method |
| WO2014201854A1 (en) * | 2013-06-17 | 2014-12-24 | 中国石油化工股份有限公司 | Surfactant composition, and manufacturing method and application of same |
| RU2647554C2 (en) * | 2013-06-17 | 2018-03-16 | Чайна Петролеум Энд Кэмикал Корпорэйшн | Surfactant composition, production and use thereof |
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| US11578253B2 (en) | 2013-06-17 | 2023-02-14 | China Petroleum & Chemical Corporation | Surfactant composition, and manufacturing method and application of same |
| CN104277814A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Oil-displacement surfactant composition, preparation method and application |
| CN104277814B (en) * | 2013-07-09 | 2017-09-15 | 中国石油化工股份有限公司 | Surfactant oil displacement composition, preparation method and application |
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| CN110527503B (en) * | 2018-05-24 | 2021-08-20 | 中国石油化工股份有限公司 | Anion-cation pair nanoemulsion oil displacement agent for oil displacement of medium-low permeability reservoir |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN112480896A (en) * | 2020-11-26 | 2021-03-12 | 天津大港油田滨港集团博弘石油化工有限公司 | Cardanol sulfonate surfactant oil displacement agent and preparation method thereof |
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Application publication date: 20110824 |