CN105950127B - Viscous crude pour-viscosity reduction composition, viscous crude pour point depression and viscosity reduction agent and preparation method thereof - Google Patents
Viscous crude pour-viscosity reduction composition, viscous crude pour point depression and viscosity reduction agent and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of viscous crude pour-viscosity reduction compositions, viscous crude pour point depression and viscosity reduction agent and preparation method thereof, belong to technical field of petroleum extraction.Viscous crude pour-viscosity reduction composition of the invention, the component including following parts by weight: 25-55 parts of surfactant, 5-20 parts of dispersing agent, 15-20 parts of inhibitor, 20-50 parts of assistant for emulsifying agent；The dispersing agent includes polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine mass percentage shared in dispersing agent is not less than 9%.The viscous crude that viscous crude pour-viscosity reduction composition of the invention is 40% to gum asphaltic content, freezing point is 40 DEG C plays the role of good reducing viscosity by emulsifying, only this pour point depression and viscosity reduction agent product that addition mass fraction is 0.5%, viscosity break ratio is up to 99% or more, pour point depression amplitude can be good at solving the problems, such as that crude oil is big into pump resistance and wellbore lift is difficult up to 15 DEG C or more.
Description
Technical field
The present invention relates to a kind of viscous crude pour-viscosity reduction compositions, viscous crude pour point depression and viscosity reduction agent and preparation method thereof, belong to petroleum
Production technique field.
Background technique
Highly viscous heavy crude, also known as heavy oil (Heavy Oil) in the world, China is commonly called as viscous crude.Viscous crude and common original
Oil is compared, and not only with the general character of petroleum, but also has unique property.Light components content is low in viscous crude, and straight chain hydrocarbon content is few, drip
Green matter and gum level are higher, have high viscosity and highdensity characteristic so as to cause most of viscous crude, exploitation is more difficult.It is former
Because mainly there are two aspects: on the one hand because the viscosity of viscous crude is high, poor fluidity, filtrational resistance is big in oil reservoir, flows into from oil reservoir
Pit shaft is more difficult；It on the other hand is, since viscous crude degassing and temperature reduce, viscous crude to be caused to be lifted to during wellbore lift
Ground is difficult.
Currently, common heavy oil generally uses water flooding recovery, high sticky oil generally uses thermal stimulation, i.e., steam soak and
Steam drives, and China generallys use cyclic steam injection tech and exploited.However thermal stimulation is for burying shallower heavy oil development
With very big advantage, but for burying deeper heavy crude reservoir, during cyclic steam stimulation, since pit shaft is along journey heat waste
Lose larger, heat utilization is lower, causes development effectiveness poor.If oil reservoir bury it is too deep if be unsuitable for this method exploitation, such as position
Dolostone in Biyang Sag depth recessed area, viscosity of crude is up to 23000mPa.s at 50 DEG C, and condensation point of crude oil is up to 40 DEG C, oil
Buried depth 1900-2100m is hidden, it is excessively poor using above-mentioned cyclic steam stimulation method exploitation effect.
For the limitation for overcoming above-mentioned heating power method to recover the oil, it is viscous that crude oil is generally reduced by the way of assisting thinner
Degree mainly reduces the viscosity of crude oil by injecting to stratum or adding thinner to pit shaft, reduces the resistance of its crude oil flow
Power improves its mobility, improves oil recovery factor.In terms of chemical viscosity reduction, reducing viscosity by emulsifying since its viscosity break ratio is high, at low cost,
Easily operated feature, and receive an acclaim.
The Chinese invention patent application (publication date is on July 7th, 1999) of Publication No. CN 1221650A discloses one kind
It is mainly used for the surfactant of oil-field thick-oil viscosity reduction, by weight in respect of the lignin of 15%-20% in formula, 5-15%'s
Caustic soda, the soap powder of 2-8% or the soap of 1-6%, the synthetic detergent of 10-15%, remaining is water.The reducing thick oil viscosity composition with
With ability resistant to high temperature, but resistance to rock salt, alkaline resistance properties are poor.
The Chinese invention patent application (publication date is on April 21st, 2010) of 101906295 A of Publication No. CN discloses
A kind of water-soluble thick oil visbreaking agent, including parts by weight be 0.01-1.0 parts of surfactant, 0.01-1.0 parts of dispersing agent and
0.01-0.6 parts of demulsifier；Wherein surfactant is the non-ionic table selected from OP-10, TX100, Span80, Tween80
Face activating agent, dispersing agent are the water-soluble high-molecular material for being selected from polyacrylamide, polyvinyl alcohol, guar gum, cellulose, demulsifier
For the block copolymer of PULLRONIC F68.The water-soluble thinner dehydration rate is high, but for high condensation point viscous crude depression effeCt
It is poor.
The Chinese invention patent application (publication date is on May 29th, 2012) of Publication No. CN 102732241A discloses
A kind of degradable non-alkali heavy crude thinner and preparation method thereof, and specifically disclose its degradable non-alkali heavy crude thinner by
Propylene glycol block polyether, ammonium alkyl sulfate, fatty alcohol, bleeding agent and water form, wherein propylene glycol block polyether, fatty alcohol sulphur
The sum of mass percent of sour ammonium, fatty alcohol, bleeding agent is 45wt%-60wt%.The water-soluble thinner reducing viscosity by emulsifying effect is good,
But it is poor for high condensation point viscous crude depression effeCt.
The Chinese invention patent application (publication date be 2011 on August 17) of 102352228 A of Publication No. CN discloses
It is a kind of with steam high temperature resistance super viscosity reducer for extremely-viscous oil and preparation method, the thinner by following weight raw material group
At: petroleum sodium sulfonate formaldehyde condensation products 40-65, nonylphenol polyoxyethylene ether sodium sulfonate or sodium sulfate of polyethenoxy ether of fatty alcohol
10-30, sodium bicarbonate 1.0-2.0, water 10.0-30.0, high temperature film spreading agent 2.0-5.0.The water-soluble thinner reducing viscosity by emulsifying
Effect is good, but poor for high condensation point viscous crude depression effeCt.
In conclusion emulsifying pour depressor used at present, often only has single viscosity-reducing performance, for the thick of high condensation point
The depression effeCt of oil is unsatisfactory.
Summary of the invention
The purpose of the present invention is to provide a kind of good viscous crude pour-viscosity reduction compositions of depression effeCt.The purpose of the present invention is also
It is to provide a kind of viscous crude pour point depression and viscosity reduction agent and preparation method thereof.
In order to achieve the goal above, the technical solution of viscous crude pour-viscosity reduction composition of the invention is as follows:
A kind of viscous crude pour-viscosity reduction composition, the component including following parts by weight: 25-55 parts of surfactant, 5-
20 parts of dispersing agent, 15-20 parts of inhibitor, 20-50 parts of assistant for emulsifying agent；The dispersing agent includes polyoxyethylene alkyl amine,
Polyoxyethylene alkyl amine mass percentage shared in dispersing agent is not less than 9%.
The dispersing agent including polyoxyethylene alkyl amine, polyoxyethylene are added in viscous crude pour-viscosity reduction composition of the invention
There is polyoxyethylene structure in alkyl amine structure and oil can be dissolved in, and have in water in its structure containing organic amine structure
There is certain solubility, especially there is preferable dissolubility in the aqueous solution of slant acidity.Polyoxyethylene alkyl amine can by
The suction-operated on wax crystalline substance surface prevents wax from forming the reticular structure for spreading whole system, reduces its freezing point.The dispersing agent and table
Face activating agent and assistant for emulsifying agent compounding, are capable of forming the very strong pour point depression and viscosity reduction agent of emulsification, destroy the combination between viscous crude
Power reduces its freezing point.In addition, the ph stability of polyoxyethylene alkyl amine is very high, do not influenced by system acid-base property.
Viscous crude pour-viscosity reduction composition of the invention can also be acted synergistically by each component, and viscous crude and water is made to form O/W type
Emulsion reduces Viscosity of Heavy Crude Oil, convenient for its flowing into oil well pump and in the wellbore, improves oil recovery efficiency.When emulsion temperature
Degree is reduced to after crude oil freezing point, and the dispersing agent in composition can be adsorbed on paraffin microporous surface, prevents wax brilliant further
Gather and become larger, realizes emulsion-stabilizing.The partial alkaline-metal ion in water flooding can be complexed in inhibitor in composition, reduce
The influence of metal ion Surfactant, at the same reduce temperature reduce after salt, alkali crystallization precipitation, improve the steady of lotion
It is qualitative.
In order to further increase the pour-point depressing process of viscous crude pour-viscosity reduction composition of the invention, the viscous crude pour-viscosity reduction group
Close the component that object preferably comprises following parts by weight: 25-50 parts of surfactant, 5-18 parts of dispersing agent, 15-18 parts
Inhibitor, 20-30 parts of assistant for emulsifying agent.
In order to further increase the pour-point depressing process of viscous crude pour-viscosity reduction composition of the invention, the viscous crude pour-viscosity reduction group
Close the component that object preferably comprises following parts by weight: 25-50 parts of surfactant, 12-18 parts of dispersing agent, 15-16 part
Inhibitor, 20-25 parts of assistant for emulsifying agent.
In order to further increase the pour-point depressing process of viscous crude pour-viscosity reduction composition of the invention, the viscous crude pour-viscosity reduction group
Close object and preferably comprise the components of following parts by weight: 25 parts of surfactant, 18 parts of dispersing agent, 16 parts of inhibitor,
25 parts of assistant for emulsifying agent.
In order to improve the salt resistance and high temperature resistance of viscous crude pour-viscosity reduction composition, the dispersing agent by petroleum sodium sulfonate and
Polyoxyethylene alkyl amine is mixed according to weight ratio 0.1-10:1-10.The petroleum sodium sulfonate of addition also has good solubilising
Effect also can be reduced suction-operated of the rock stratum to crude oil system, improve oil recovery factor.The dispersing agent by petroleum sodium sulfonate and
The weight ratio of polyoxyethylene alkyl amine is more preferably 1-5:1-4.The polyoxyethylene alkyl amine is shared in dispersing agent
Mass percentage is not less than 9%.It is further preferred that the quality percentage that the polyoxyethylene alkyl amine is shared in dispersing agent
Content is not less than 16%.The structural formula of above-mentioned polyoxyethylene alkyl amine is H (C2H4O)xRN(C2H4O)yH or R1R2N(C2H4O)nH, wherein R, R1、R2The alkyl group for being 12-18 for carbon atom number, the value of x, y, n are as follows: the value of x+y is 10-30, and the value of n is
10-30。
In order to improve the emulsification of viscous crude pour-viscosity reduction composition of the present invention, the surfactant is alkyl phenol polyoxy
One or more of ethylene ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether sodium alkyl sulfate.It is preferred that
, alkyl phenol polyethenoxy ether sodium sulfate is octyl phenol polyoxyethylene ether sodium sulphate, nonylphenol polyoxyethylene ether sulfate, 12
One or more of alkyl phenol polyethenoxy ether sodium sulfate, the polymerization of polyoxyethylene groups in alkyl phenol polyethenoxy ether sodium sulfate
Degree is 2-10.Preferably, the structural formula of polyoxyethylene fatty alkyl ether sulfonate is RO (CH2CH2O)nSO3Na, wherein R is that carbon is former
Subnumber is the alkyl group of 12-18, and the value of n is 2 or 3.It is further preferred that polyoxyethylene fatty alkyl ether sulfonate is 15
One or more of alcohol sodium sulfonate of ethoxylated, polyoxyethylene octadecanol sodium sulfonate.Polyoxyethylene ether sodium alkyl sulfate
For one or more of dodecyl polyoxyethylene ether sodium sulphate, Steareth sodium sulphate, wherein polyoxy second
The degree of polymerization of alkenyl is 3.
The inhibitor be one of disodium ethylene diamine tetraacetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate or
It is several.
The assistant for emulsifying agent is one of petroleum sodium sulfonate, sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
Or it is several.
The technical solution of viscous crude pour point depression and viscosity reduction agent of the invention is as follows:
A kind of viscous crude pour point depression and viscosity reduction agent, by being made following weight percentage components: surfactant, the 5- of 25-55%
20% dispersing agent, the inhibitor of 15-20%, 20-50% assistant for emulsifying agent, surplus is water；The dispersing agent includes polyoxy second
Allylic alkylation amine, polyoxyethylene alkyl amine mass percentage shared in dispersing agent are not less than 9%.
In order to improve the emulsification of viscous crude pour-viscosity reduction composition of the present invention, the surfactant is alkyl phenol polyoxy
One or more of ethylene ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether sodium alkyl sulfate.
The inhibitor be one of disodium ethylene diamine tetraacetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate or
It is several.
The assistant for emulsifying agent is one of petroleum sodium sulfonate, sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
Or it is several.
It is further preferred that polyoxyethylene alkyl amine mass percentage shared in dispersing agent is not less than
16%.
The technical solution of the preparation method of viscous crude pour point depression and viscosity reduction agent of the invention is as follows:
The preparation method of above-mentioned viscous crude pour point depression and viscosity reduction agent, includes the following steps:
The inhibitor is added to the water, solution is made, then the surfactant, dispersing agent, assistant for emulsifying agent are added
In the solution, be made mixed liquor to get；
The application of viscous crude pour point depression and viscosity reduction agent of the invention in terms of viscous crude pour-viscosity reduction, includes the following steps:
Add water to mix to obtain mixed liquor viscous crude pour point depression and viscosity reduction agent of the invention, the mixed liquor is added in pit shaft, is formed
Oil-in-water emulsion.
Surfactant in the mixed liquor, dispersing agent, inhibitor, assistant for emulsifying agent gross mass percentage composition be 5-
25%.
The mixed liquor is added dropwise or is intermittently added to pit shaft by the way that oil, collar-shaped space or hollow rod etc. are lasting
In.
Surfactant, dispersing agent, inhibitor, assistant for emulsifying agent compounding in viscous crude pour-viscosity reduction composition of the invention,
There is very strong reducing viscosity by emulsifying effect to viscous crude, there is good pour-point depressing process to the viscous crude of high condensation point.Gum asphalt is contained
Amount is 40%, the viscous crude that freezing point is 40 DEG C plays the role of good reducing viscosity by emulsifying, only adds this drop that mass fraction is 0.5%
Solidifying thinner product, up to 99% or more, pour point depression amplitude can be good at solving the resistance of crude oil well pump viscosity break ratio up to 15 DEG C or more
The problem that power is big and wellbore lift is difficult.
Specific embodiment
Technical solution of the present invention is further detailed combined with specific embodiments below.
Embodiment 1
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as by the group of following weight: 30g surfactant nonyl phenol
Polyethenoxy ether sodium sulfate, 10g dispersing agent, 15g inhibitor disodium ethylene diamine tetraacetate, 30g assistant for emulsifying agent sodium lignin sulfonate；
Dispersing agent is mixed by 2g petroleum sodium sulfonate and 8g octadecylamine polyoxyethylene ether；
The polyoxyethylene groups degree of polymerization in above-mentioned nonylphenol polyoxyethylene ether sulfate is 10, in octadecylamine polyoxyethylene ether
The degree of polymerization of polyoxyethylene groups is 10.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 15g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 15g deionized water, stirring is completely dissolved to inhibitor, is sequentially added surfactant, is divided
Powder, assistant for emulsifying agent, stirring to get.
Embodiment 2
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as by the group of following weight: 40g surfactant pentadecanol
Sodium sulfonate of ethoxylated, 5g dispersing agent octadecylamine polyoxyethylene ether, 18g inhibitor aminotriacetic acid, 25g assistant for emulsifying agent are wooden
Plain sodium sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned pentadecanol sodium sulfonate of ethoxylated is 2, in octadecylamine polyoxyethylene ether
The degree of polymerization of polyoxyethylene groups is 12；
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 12g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 12g deionized water, stirring is completely dissolved to inhibitor, is sequentially added surfactant, is divided
Powder, assistant for emulsifying agent, stirring to get.
Embodiment 3
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as by the group of following weight: 50g surfactant octadecyl alcolol
Sodium sulfonate of ethoxylated, 12g dispersing agent, 15g inhibitor ammonium citrate, 20g assistant for emulsifying agent lauryl alcohol polyethers sodium sulfonate；
Dispersing agent is mixed by 10g petroleum sodium sulfonate and 2g octadecylamine polyoxyethylene ether；
The polyoxyethylene groups degree of polymerization in above-mentioned polyoxyethylene octadecanol sodium sulfonate is 3, in octadecylamine polyoxyethylene ether
The degree of polymerization of polyoxyethylene groups is 30.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 3g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 3g deionized water, stirring is completely dissolved to inhibitor, sequentially adds surfactant, dispersion
Agent, assistant for emulsifying agent, stirring to get.
Embodiment 4
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as by the group of following weight: 25g surfactant nonyl phenol
Polyethenoxy ether sodium sulfate, 18g dispersing agent, 16g inhibitor sodium potassium tartrate tetrahydrate, 25g assistant for emulsifying agent petroleum sodium sulfonate；
Dispersing agent is mixed by 15g petroleum sodium sulfonate and 3g octadecylamine polyoxyethylene ether；
The polyoxyethylene groups degree of polymerization in above-mentioned nonylphenol polyoxyethylene ether sulfate is 10, in octadecylamine polyoxyethylene ether
The degree of polymerization of polyoxyethylene groups is 15.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 16g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 16g deionized water, stirring is completely dissolved to inhibitor, is sequentially added surfactant, is divided
Powder, assistant for emulsifying agent, stirring to get.
Embodiment 5
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as by the group of following weight: 55g surfactant, 5g point
Powder, 16g inhibitor, 20g assistant for emulsifying agent petroleum sodium sulfonate；
Surfactant is mixed by 25g dodecyl polyoxyethylene ether sodium sulphate and 30g polyoxyethylene octadecanol sodium sulfonate
Conjunction obtains；
Dispersing agent is mixed by 3g petroleum sodium sulfonate and 2g hexadecylamine polyoxyethylene ether；
Inhibitor is mixed to get by 8g sodium potassium tartrate tetrahydrate and 8g disodium ethylene diamine tetraacetate；
The polyoxyethylene groups degree of polymerization in above-mentioned dodecyl polyoxyethylene ether sodium sulphate is 3, polyoxyethylene octadecanol
The polyoxyethylene groups degree of polymerization in sodium sulfonate is 3, and the degree of polymerization of polyoxyethylene groups is 20 in hexadecylamine polyoxyethylene ether.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 4g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 4g deionized water, stirring is completely dissolved to inhibitor, sequentially adds surfactant, dispersion
Agent, assistant for emulsifying agent, stirring to get.
Embodiment 6
The viscous crude pour-viscosity reduction composition of the present embodiment, is grouped as: 25g surfactant sodium dodecyl by the group of following weight
Base phenol polyethenoxy ether sodium sulfonate, 11g dispersing agent, 17g inhibitor disodium ethylene diamine tetraacetate, 40g assistant for emulsifying agent；
Dispersing agent is mixed by 10g petroleum sodium sulfonate and 1g lauryl amine polyoxyethylene ether；
Assistant for emulsifying agent is mixed to get by 20g petroleum sodium sulfonate and 20g sodium lignin sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned dodecylphenol sodium sulfonate of ethoxylated is 3, lauryl amine polyoxy
The degree of polymerization of polyoxyethylene groups is 10 in vinethene.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment is made of the water of above-mentioned viscous crude pour-viscosity reduction composition and 7g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment includes the following steps:
Inhibitor is added in 7g deionized water, stirring is completely dissolved to inhibitor, sequentially adds surfactant, dispersion
Agent, assistant for emulsifying agent, stirring to get.
Test example
The performance of viscous crude pour point depression and viscosity reduction agent in testing example 1-6 in accordance with the following steps:
1) oil field An Peng dolomite viscous crude (gum asphaltic content 40%, freezing point are 40 DEG C) 280g is taken, is placed in
Heated at constant temperature 1h in water-bath, stirring remove free water and bubble therein.
2) it takes 120g to pacify canopy oil field stratum water, 0.5% viscous crude pour point depression and viscosity reduction agent of the invention is added thereto, water is made
Solution.
3) the viscous crude pour point depression and viscosity reduction agent aqueous solution prepared in viscous crude and step 2) preheated in step 1) is mixed, is placed in
In 50 DEG C of water-baths, adjusting electric mixer revolving speed is 250r/min, stirs 10 minutes, obtains emulsification viscous crude.
4) it with the viscosity of NXS-11A type rotational viscometer test emulsification viscous crude, is measured with CGWX-201A petroleum products questionable points
The freezing point of instrument test emulsification viscous crude, test result are shown in Table 1.
The test result of viscous crude pour point depression and viscosity reduction agent in 1 embodiment 1-6 of table
Viscous crude pour point depression and viscosity reduction agent of the invention can be 40% to gum asphaltic content, the viscous crude that freezing point is 40 DEG C
Play the role of good reducing viscosity by emulsifying, only add this pour point depression and viscosity reduction agent product that mass fraction is 0.5%, can make viscous at 50 DEG C
Degree be 23000mPas, viscous crude that freezing point is 40 DEG C realizes emulsification, formation oil-in-water emulsion, viscosity break ratio up to 99% with
On, emulsion temperature is reduced to 30 DEG C or less still to have preferable mobility, and pour point depression amplitude can be good at up to 15 DEG C or more
Solve the problems, such as that crude oil well pump resistance is big and wellbore lift is difficult.
When specifically used, viscous crude pour-viscosity reduction composition of the invention is stirred with water, is configured to 5%~25%
Aqueous solution；(oil well daily output is added dropwise or is intermittently added in pit shaft by the way that oil, collar-shaped space or hollow rod etc. are lasting
Liquid measure presses 10~20m3Consider, joined technical considers that lasting dropwise addition or daily addition are primary), connect it in the wellbore with crude oil
Touching mixing, forms oil-in-water emulsion, solves the problems, such as that crude oil is difficult into pump and wellbore lift is difficult.
Claims (3)
1. a kind of viscous crude pour-viscosity reduction composition, which is characterized in that the component including following parts by weight: 25-55 parts of surface
Activating agent, 5-20 parts of dispersing agent, 15-20 parts of inhibitor, 20-50 parts of assistant for emulsifying agent；The dispersing agent includes polyoxy second
Allylic alkylation amine, polyoxyethylene alkyl amine mass percentage shared in dispersing agent are not less than 9%；
The dispersing agent is mixed by petroleum sodium sulfonate and polyoxyethylene alkyl amine according to weight ratio 0.1-10:1-10；It is described
Surfactant is alkyl phenol polyethenoxy ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkylsurfuric acid
One or more of sodium；The inhibitor is disodium ethylene diamine tetraacetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate
One or more of；The assistant for emulsifying agent is petroleum sodium sulfonate, in sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
One or more.
2. a kind of viscous crude pour point depression and viscosity reduction agent, which is characterized in that by being made following weight percentage components: the surface of 25-55% is living
Property agent, the dispersing agent of 5-20%, the inhibitor of 15-20%, 20-50% assistant for emulsifying agent, the water of 3-15%；The dispersing agent includes poly-
Ethylene oxide alkylamine, polyoxyethylene alkyl amine mass percentage shared in dispersing agent are not less than 9%；
The dispersing agent is mixed by petroleum sodium sulfonate and polyoxyethylene alkyl amine according to weight ratio 0.1-10:1-10；It is described
Surfactant is alkyl phenol polyethenoxy ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkylsurfuric acid
One or more of sodium；The inhibitor is disodium ethylene diamine tetraacetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate
One or more of；The assistant for emulsifying agent is petroleum sodium sulfonate, in sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
One or more.
3. the preparation method of viscous crude pour point depression and viscosity reduction agent as claimed in claim 2, which comprises the steps of:
The inhibitor is added to the water, solution is made, then will be described in the surfactant, dispersing agent, assistant for emulsifying agent addition
In solution, be made mixed liquor to get.
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| CN108441199A (en) * | 2018-03-23 | 2018-08-24 | 北京捷贝通石油技术股份有限公司 | A kind of environment-friendly highly efficient heavy crude thinner |
| CN108975646B (en) * | 2018-09-11 | 2021-10-22 | 浙江奇彩环境科技股份有限公司 | Oil sludge demulsifier and preparation method and application thereof |
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