CN1071690A - Viscosity depressant for high-viscosity crude oil and preparation thereof, using method - Google Patents
Viscosity depressant for high-viscosity crude oil and preparation thereof, using method Download PDFInfo
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- CN1071690A CN1071690A CN 92106456 CN92106456A CN1071690A CN 1071690 A CN1071690 A CN 1071690A CN 92106456 CN92106456 CN 92106456 CN 92106456 A CN92106456 A CN 92106456A CN 1071690 A CN1071690 A CN 1071690A
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Abstract
Viscosity depressant for high-viscosity crude oil and preparation thereof, using method belong to the oilfield chemical technology field.Effective constituent of the present invention is sodium oleate, fatty acid alkyl amide, and alkylphenol polyoxyethylene, permeate agent the rest is water.The preparation of this viscosity-depression agent is the oleic acid that splashes into 0.6-1.2 mol ratios in sig water, stirs, and adds fatty acid alkyl amide successively, alkylphenol polyoxyethylene, permeate agent; Add various raw materials weight ratio be 1: 5: 5: 30: 20-1: 10: 15: 60: 35.When using this viscosity-depression agent, be made into the aqueous solution that contains diluted alkaline earlier, then by with former oil ratio 4: 6-1: 9 weight ratio adds in the crude oil, and 30-80 ℃ of constant temperature two hours stirs a little, promptly gets the low viscosity water external emulsion.Viscosity-depression agent production cost of the present invention is low, the no three wastes, and viscosity reducing effect is good, is suitable for producing in batches.
Description
The present invention relates to a kind of novel viscosity depressant for high-viscosity crude oil, belong to the oilfield chemical technology field.
The underground crude oil of containing wherein contains colloid, and bituminous quantity directly influences the viscosity of crude oil.If viscosity of crude surpasses 6.0 * 10
3MPaS is referred to as viscous crude.Under the 50 ℃ of conditions in stratum, if do not take the measure of some physics and chemistry just can't exploit.Viscosity of crude surpasses 2.0 * 10
4More than the mPaS, be referred to as high-consistency crude oil.
In the world, be that the steam of steam incoming and outcoming drives for the common method of viscous oil recovery.The heat steam that is about to 15-20MPa injects oil reservoir, by the heat of its release the temperature of crude oil is raise, and viscosity reduces thereupon, is convenient to flow into the shaft bottom and is exploited.But this method needs the high-duty boiler of purchase price costliness, expends a large amount of energy, and cost is too high.
In addition, superheated vapour displacement of reservoir oil method also is subjected to the restriction of reservoir depth, and for the oil reservoir that surpasses 1400m, its effect is too poor.Therefore, the exploitation of deep-layer heavy crude at home and abroad is the still unsolved hang-up in oil recovery field always.
Reduce viscosity of thickened oil and drive the method, can also promptly add viscosity-depression agent, make crude oil form water external emulsion, reduce viscosity significantly, be convenient to normal exploitation by emulsification dispersing method viscosity reduction except that above-mentioned steam.The domestic market heavy crude thinner is only for 1.0 * 10
4The crude oil of mPaS left and right sides viscosity has viscosity reducing effect.But be higher than 2.0 * 10 for viscosity
4The crude oil of mPaS then loses its viscosity reduction effect.At present, the oil reservoir that oil fields such as the Liaohe River of China, triumph, huge port have been found, the viscosity that quite a few crude oil is arranged is 2.0 * 10
4MPaS-1.0 * 10
5MPaS all belongs to high-consistency crude oil, exploits very difficult.
Difficult problem at above-mentioned high-consistency crude oil exploitation the invention provides a kind of high novel viscosity depressant for high-viscosity crude oil, can be used for the exploitation of high-consistency crude oil in a large number.
Viscosity depressant for high-viscosity crude oil provided by the invention is a kind of faint yellow colloid mucus, and viscosity is 200-300mPaS in the time of 25 ℃; Its effective constituent is sodium oleate, fatty acid alkyl amide, alkylphenol polyoxyethylene and permeate agent (as the alkyl alcohol Soxylat A 25-7); All the other are water; The weight ratio of each effective ingredient is 1: 1: 6: 4-2: 2.5: 20: 15, with 1: 1: 5: 4-1.5: be good at 3: 15: 10.The effective ingredient total content is the heavy per-cent of 40%-60%.
The preparation method of viscosity depressant for high-viscosity crude oil is as follows:
1. under 30-80 ℃ and normal pressure,, be added drop-wise in rare NaOH solution, stir the generation sodium oleate while dripping the mol ratio of oleic acid with 0.6-1.2.Reaction formula is as follows:
2. in above-mentioned reaction system, slowly add the tensio-active agent fatty acid alkyl amide, the limit edged stirs.
3. again with the tensio-active agent alkylphenol polyoxyethylene, under agitation condition, be added at leisure in the above-mentioned system.
4. in above-mentioned system, add permeate agent, as the alkyl alcohol Soxylat A 25-7.
5. above-mentioned system is stirred, promptly get faint yellow colloid mucus.Surveying its viscosity in the time of 25 ℃ is 200-300mPaS.
More than 2,3,4 steps all under 30-80 ℃ and normal pressure, carry out, the weight ratio of each raw material is according to time being 1: 5: 5: 30: 20-1: 10: 15: 60: 35.When producing in batches, oleic acid adds the speed control of sig water at 1.5-3.2Kg/min.Other medicine adding speed are 5-8Kg/min.
Viscosity-depression agent of the present invention prepares example:
Embodiment 1:
Under 30 ℃ and normal pressure, 0.7gNaOH is added in the 25ml water, after the dissolving, with the nipple dropper with 1.5g oleic acid with 3-5 drip/minute speed, splash in the sig water, the stirring while dripping is until mixing.Under agitation condition, splash into 5g fatty acid alkyl amide and 13g alkylphenol polyoxyethylene again, and the 8g permeate agent, after stirring, getting light yellow viscous liquid, viscosity is 200mPaS.
Embodiment 2:
With embodiment 1, different is, temperature is 50 ℃, and replaces solid state N aOH with 40% liquid caustic soda, and the maintenance Total Water is 25ml.Under agitation condition, institute adds raw material and is followed successively by 2g, 5g, 6g, 12g, 10g, drip oleic acid speed with 3-5 drip/minute.Also get light yellow viscous liquid, this viscosity-depression agent viscosity is 150mPaS.
When using above-mentioned viscosity-depression agent, need be made into and contain viscosity-depression agent concentration 0.1-2.0% weight percent (down with) and NaOH concentration is the aqueous solution of 0.05-3.0%.The purpose that adds NaOH is the petroleum acid that is to make full use of in the crude oil, forms the natural surface active agent petroleum soap, and reaction formula is as follows:
Petroleum acid+nNaOH=petroleum acid sodium (petroleum soap)+nH
2O
Concrete steps add viscosity-depression agent again for to be made into the aqueous solution that contains NaOH 0.05-3.0% earlier, make its concentration reach 0.1-2.0%, mix and can use.Wherein NaOH concentration 0.08-1.0% and viscosity-depression agent concentration 0.15-1.5% are good.With the above-mentioned viscosity-depression agent aqueous solution and crude oil according to 4: 6-1: 9 ratio is mixed, constant temperature after two hours under 30-80 ℃ of temperature, agitation as appropriate, then viscous crude promptly becomes water external emulsion.
For example practical:
Example 1. is added to 100g crude oil (viscosity 6.2 * 10 to the dilute alkaline aqueous solution 25.0g of 0.4% viscosity-depression agent
4MPaS) in, 50 ℃ of constant temperature 2 hours.Stir milk sap, viscosity is 170mPaS.
Example 2. adds 100g crude oil (viscosity 8.3 * 10 to the dilute alkaline aqueous solution 66.5g of 0.3% viscosity-depression agent
4MPaS), 50 ℃ of constant temperature is 2 hours.Stir milk sap, viscosity 120mPaS.
60 ℃ of room temperatures, use thinner of the present invention and existing commercially available thinner, both are listed in the table below by viscosity reducing effect:
Production process of the present invention is without the three wastes, and production cost is low, and viscosity break ratio is high, and viscosity reducing effect is good.
Claims (8)
1, viscosity depressant for high-viscosity crude oil, it is characterized in that, the tensio-active agent that filed of daily-use chemical industry is commonly used is used for viscosity-depression agent of the present invention, mainly contain sodium oleate, fatty acid alkyl amide, alkylphenol polyoxyethylene, other adds a permeate agent, promptly constitute the effective ingredient of viscosity depressant for high-viscosity crude oil, the rest is water; The weight ratio of each effective ingredient was followed successively by 1: 1: 6: 4-2: 2.5: 20: 15, the total content of effective ingredient was the 40-60% weight percent.
2, viscosity-depression agent as claimed in claim 1 is characterized in that, said permeate agent is the alkyl alcohol Soxylat A 25-7.
3, viscosity-depression agent as claimed in claim 1 is characterized in that, the optimum weight ratio of each effective ingredient is 1: 1: 5: 4-1.5: 3: 15: 10.
4, viscosity-depression agent as claimed in claim 1 is characterized in that, said viscosity-depression agent finished product is that a kind of viscosity is 200-300mPaS(25 ℃) faint yellow colloid mucus.
5, the preparation method of viscosity depressant for high-viscosity crude oil is characterized in that, 30-80 ℃, normal pressure, under agitation condition are added drop-wise to the oleic acid of 0.6-1.2 mol ratio in rare NaOH alkali lye, and sig water concentration is 0.5-3.0%; Under agitation condition, slowly add fatty acid alkyl amide and alkylphenol polyoxyethylene to above-mentioned system successively then, add permeate agent at last, add each raw material weight ratio be 1: 5: 5: 30: 20-1: 10: 15: 60: 35.
6, viscosity-depression agent preparation method as claimed in claim 5 is characterized in that, dripping oleic speed when producing in batches is 1.5Kg/min-3.2Kg/min.
7, the using method of viscosity depressant for high-viscosity crude oil is characterized in that, viscosity-depression agent is made into the aqueous solution that weight percent is 0.1-2.0%, and wherein containing the NaOH weight percent concentration is 0.05%-3.0%; The effect of alkali is the natural surface active agent that makes full use of in the crude oil, i.e. petroleum soap; Again with this aqueous solution by and crude oil 4: 6-1: 9 weight ratio joins in 30-80 ℃ the crude oil, and constant temperature two hours stirs slightly and can obtain low viscous oil-in-water emulsion.
8, viscosity-depression agent using method as claimed in claim 7 is characterized in that, viscosity-depression agent optimum weight percentage concentration wherein contains the NaOH of 0.08-1.5% for the 0.15-1.0% aqueous solution uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106456 CN1025680C (en) | 1992-04-03 | 1992-04-03 | Viscosity reducer for high-viscosity crude oil and preparation and use methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106456 CN1025680C (en) | 1992-04-03 | 1992-04-03 | Viscosity reducer for high-viscosity crude oil and preparation and use methods thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1071690A true CN1071690A (en) | 1993-05-05 |
| CN1025680C CN1025680C (en) | 1994-08-17 |
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| CN 92106456 Expired - Fee Related CN1025680C (en) | 1992-04-03 | 1992-04-03 | Viscosity reducer for high-viscosity crude oil and preparation and use methods thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091133C (en) * | 1997-07-05 | 2002-09-18 | 陈国华 | High temp. chemical viscosity reducing agent for crude oil |
| CN1101255C (en) * | 1998-01-21 | 2003-02-12 | 辽河石油勘探局勘察设计研究院 | Emulsifying viscosity-reducing agent for superthick emulsified oil combustion |
| CN100363456C (en) * | 2004-11-17 | 2008-01-23 | 中国石油化工股份有限公司 | A thick oil emulsifying viscosity reducer |
| CN100526417C (en) * | 2007-12-07 | 2009-08-12 | 山东大学 | Anion worm-shaped micellar flooding system and preparation method thereof |
| CN101044230B (en) * | 2004-10-19 | 2010-11-10 | 赫尔穆特·特伊尼森 | Corrosion protection agent for functional fluids, water-soluble concentrate and use thereof |
| CN101886740A (en) * | 2010-07-05 | 2010-11-17 | 西安秦荣石化科技有限公司 | Pour point depressing and drag reducing agent in crude oil transportation |
| CN102154000A (en) * | 2011-02-11 | 2011-08-17 | 中国地质大学（武汉） | Transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer and preparation method thereof |
| CN102352733A (en) * | 2011-10-17 | 2012-02-15 | 中国石油天然气股份有限公司 | A method for anchoring tubing in heavy oil wells |
| WO2012075964A1 (en) | 2010-12-09 | 2012-06-14 | 中国石油化工股份有限公司 | Neodymium based homogeneous phase rare earth catalyst and use thereof |
| WO2015067209A1 (en) * | 2013-11-07 | 2015-05-14 | 中国石油大学(华东) | Heavy oil spontaneous emulsifying and viscosity-reducing system and preparation method therefor |
| CN106543998B (en) * | 2016-10-19 | 2020-06-12 | 中国石油化工股份有限公司 | Hydrothermal cracking catalytic viscosity reducer and preparation method thereof |
| CN114426825A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Viscous oil emulsifying viscosity reducer composition with responsiveness and application thereof |
-
1992
- 1992-04-03 CN CN 92106456 patent/CN1025680C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091133C (en) * | 1997-07-05 | 2002-09-18 | 陈国华 | High temp. chemical viscosity reducing agent for crude oil |
| CN1101255C (en) * | 1998-01-21 | 2003-02-12 | 辽河石油勘探局勘察设计研究院 | Emulsifying viscosity-reducing agent for superthick emulsified oil combustion |
| CN101044230B (en) * | 2004-10-19 | 2010-11-10 | 赫尔穆特·特伊尼森 | Corrosion protection agent for functional fluids, water-soluble concentrate and use thereof |
| CN100363456C (en) * | 2004-11-17 | 2008-01-23 | 中国石油化工股份有限公司 | A thick oil emulsifying viscosity reducer |
| CN100526417C (en) * | 2007-12-07 | 2009-08-12 | 山东大学 | Anion worm-shaped micellar flooding system and preparation method thereof |
| CN101886740A (en) * | 2010-07-05 | 2010-11-17 | 西安秦荣石化科技有限公司 | Pour point depressing and drag reducing agent in crude oil transportation |
| WO2012075964A1 (en) | 2010-12-09 | 2012-06-14 | 中国石油化工股份有限公司 | Neodymium based homogeneous phase rare earth catalyst and use thereof |
| CN102154000A (en) * | 2011-02-11 | 2011-08-17 | 中国地质大学（武汉） | Transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer and preparation method thereof |
| CN102154000B (en) * | 2011-02-11 | 2013-01-02 | 中国地质大学（武汉） | Transition metal sulfonate complex thick oil water thermo-catalysis viscosity reducer and preparation method thereof |
| CN102352733A (en) * | 2011-10-17 | 2012-02-15 | 中国石油天然气股份有限公司 | A method for anchoring tubing in heavy oil wells |
| CN102352733B (en) * | 2011-10-17 | 2014-08-06 | 中国石油天然气股份有限公司 | A method for anchoring tubing in heavy oil wells |
| WO2015067209A1 (en) * | 2013-11-07 | 2015-05-14 | 中国石油大学(华东) | Heavy oil spontaneous emulsifying and viscosity-reducing system and preparation method therefor |
| CN106543998B (en) * | 2016-10-19 | 2020-06-12 | 中国石油化工股份有限公司 | Hydrothermal cracking catalytic viscosity reducer and preparation method thereof |
| CN114426825A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Viscous oil emulsifying viscosity reducer composition with responsiveness and application thereof |
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| Publication number | Publication date |
|---|---|
| CN1025680C (en) | 1994-08-17 |
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