CN105950127A - Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent - Google Patents
Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent Download PDFInfo
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- CN105950127A CN105950127A CN201610324332.4A CN201610324332A CN105950127A CN 105950127 A CN105950127 A CN 105950127A CN 201610324332 A CN201610324332 A CN 201610324332A CN 105950127 A CN105950127 A CN 105950127A
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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Abstract
The invention relates to pour point depressing and viscosity reducing composition for heavy oil, a pour point depressing and viscosity reducing agent for the heavy oil and a preparation method of the pour point depressing and viscosity reducing agent, and belongs to the technical field of oil exploitation. The pour point depressing and viscosity reducing composition for the heavy oil comprises components in parts by weight as follows: 25-55 parts of a surfactant, 5-20 parts of a dispersing agent, 15-20 parts of an inhibitor and 20-50 parts of a co-emulsifier, wherein the dispersing agent contains polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine accounts for not lower than 9% of the dispersing agent in percentage by mass. The pour point depressing and viscosity reducing composition for the heavy oil has good emulsifying viscosity reduction functions on the heavy oil with the gum asphalt content of 40% and the freezing point of 40 DEG C, the viscosity reducing rate can be up to 99% or higher and the pour point depressing range can be up to 15 DEG C or higher only through addition of 0.5% by mass of the pour point depressing and viscosity reducing agent product, and the problems of high entering-pump resistance of crude oil and difficulty in shaft lifting can be solved very well.
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 oil exploitation
Technical field.
Background technology
Full-bodied heavy crude, in the world also known as heavy oil (Heavy Oil), China is commonly called as viscous crude.Viscous crude and ordinary crude oils phase
Ratio, had both had the general character of oil, had again the character of uniqueness.In viscous crude, light components content is low, and straight-chain hydrocarbons content is few, drip
Blue or green matter and gum level are higher, thus cause major part viscous crude to have high viscosity and highdensity characteristic, exploitation more difficulty.
Reason mainly has two aspects: on the one hand because thick oil viscosity is high, and poor fluidity, in oil reservoir, filtrational resistance is big, from oil reservoir
Flow into pit shaft the most difficult；On the other hand it is during wellbore lift, owing to viscous crude degassing and temperature reduce, causes viscous crude
It is lifted to ground difficulty.
At present, common heavy oil typically uses water flooding recovery, high toughening oil typically to use thermal stimulation, i.e. steam soak and steaming
Vapour drives, and China generally uses cyclic steam injection tech to exploit.But thermal stimulation is for burying shallower heavy oil development tool
There is the biggest advantage, but for burying deeper heavy crude reservoir, during cyclic steam stimulation, owing to pit shaft is along journey heat waste
Losing relatively big, heat utilization is relatively low, causes development effectiveness poor.If oil reservoir buried deeply, it is unsuitable for the method exploitation, as
Being positioned at the Dolostone of the deep recessed area of Biyang Sag, at 50 DEG C, viscosity of crude is up to 23000mPa.s, and condensation point of crude oil is up to 40 DEG C,
Reservoir buried depth 1900-2100m, uses above-mentioned cyclic steam stimulation method exploitation effect excessively poor.
For the limitation overcoming above-mentioned heating power method to recover the oil, the general mode using auxiliary thinner reduces viscosity of crude, main
To reduce former oil viscosity by injecting to stratum or adding thinner to pit shaft, to reduce the resistance of its crude oil flow, change
Its mobility kind, improves oil recovery factor.In terms of chemical viscosity reduction, reducing viscosity by emulsifying is owing to its viscosity break ratio is high, low cost, easily
In the feature of operation, and receive an acclaim.
The Chinese invention patent application (publication date is on July 7th, 1999) of Publication No. CN 1221650A discloses one
Plant the surfactant being mainly used in oil-field thick-oil viscosity reduction, by weight in respect of the lignin of 15%-20%, 5-15% in its formula
Caustic soda, the soap powder of 2-8% or the soap of 1-6%, the synthetic detergent of 10-15%, remaining is water.This reducing thick oil viscosity combines
Thing is with having resistant to elevated temperatures ability, but resistance to rock salt, alkaline resistance properties are poor.
The Chinese invention patent application (publication date is on April 21st, 2010) of Publication No. CN 101906295 A is open
A kind of water-soluble thick oil visbreaking agent, including weight portion be the surfactant of 0.01-1.0 part, the dispersant of 0.01-1.0 part and
The demulsifier of 0.01-0.6 part；Wherein surfactant is the nonionic selected from OP-10, TX100, Span80, Tween80
Type surfactant, dispersant is selected from polyacrylamide, polyvinyl alcohol, guar gum, the water-soluble high-molecular material of cellulose,
Demulsifier is the block copolymer of PULLRONIC F68.This water-soluble thinner dehydration rate is high, but drops for high condensation point viscous crude
Solidifying effect 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, penetrating agent and water composition, wherein propylene glycol block polyether, fat
Alcohol ammonium sulfate, fatty alcohol, the mass percent sum of penetrating agent are 45wt%-60wt%.This water-soluble thinner reducing viscosity by emulsifying is imitated
The best, but poor for high condensation point viscous crude depression effeCt.
The Chinese invention patent application (publication date is on August 17th, 2011) of Publication No. CN 102352228 A is open
A kind of companion's steam high temperature resistance super viscosity reducer for extremely-viscous oil and preparation method, this thinner is by the raw material group of following weight
Become: petroleum sodium sulfonate formaldehyde condensation products 40-65, NPE sodium sulfonate or polyoxyethylenated alcohol sodium sulfate
10-30, sodium bicarbonate 1.0-2.0, water 10.0-30.0, high temperature film spreading agent 2.0-5.0.This water-soluble thinner reducing viscosity by emulsifying
Effective, but poor for high condensation point viscous crude depression effeCt.
In sum, currently used emulsifying pour depressor, the most only possess single viscosity-reducing performance, for the viscous crude of high condensation point
Depression effeCt unsatisfactory.
Summary of the invention
It is an object of the invention to provide the viscous crude pour-viscosity reduction compositions that a kind of depression effeCt is good.The present invention also aims to
A kind of viscous crude pour point depression and viscosity reduction agent and preparation method thereof is provided.
In order to realize object above, the technical scheme of the viscous crude pour-viscosity reduction compositions of the present invention is as follows:
A kind of viscous crude pour-viscosity reduction compositions, including the component of following parts by weight: the surfactant of 25-55 part, 5-20
The dispersant of part, the inhibitor of 15-20 part, the co-emulsifier of 20-50 part；Described dispersant includes polyoxyethylene alkyl amine,
Described polyoxyethylene alkyl amine weight/mass percentage composition shared by dispersant is not less than 9%.
The viscous crude pour-viscosity reduction compositions of the present invention with the addition of the dispersant including polyoxyethylene alkyl amine, polyxyethylated
Amine structure has polyoxyethylene structure and oil can be dissolved in, and its structure has one containing organic amine structure in water
Determine dissolubility, in the aqueous solution of slant acidity, particularly have preferable dissolubility.Polyoxyethylene alkyl amine can be by brilliant at wax
The adsorption on surface, stops wax to form the network structure throughout whole system, reduces its freezing point.This dispersant and surface
Activating agent and co-emulsifier compound, it is possible to form the pour point depression and viscosity reduction agent that emulsification is the strongest, destroy the adhesion between viscous crude,
Reduce its freezing point.It addition, the ph stability of polyoxyethylene alkyl amine is the highest, do not affected by system Acidity of Aikalinity.
The viscous crude pour-viscosity reduction compositions of the present invention can also make viscous crude form O/W type emulsus with water by each component synergism
Liquid, reduces Viscosity of Heavy Crude Oil, it is simple to it enters oil well pump and flowing in the wellbore, improves oil recovery efficiency.Work as emulsion temperature
After being reduced to crude oil freezing point, the dispersant in compositions can adsorb at paraffin microporous surface, stops wax brilliant the most poly-
And become big, it is achieved emulsion-stabilizing.Inhibitor in compositions can partial alkaline-metal ion in complexation formation water, reduce
The impact of metal ion Surfactant, decreases salt after temperature reduces, the precipitation of alkali crystallization simultaneously, improves emulsion
Stability.
In order to improve the pour-point depressing process of the viscous crude pour-viscosity reduction compositions of the present invention further, described viscous crude pour-viscosity reduction compositions
Preferably comprise the component of following parts by weight: the surfactant of 25-50 part, the dispersant of 5-18 part, 15-18 part
Inhibitor, the co-emulsifier of 20-30 part.
In order to improve the pour-point depressing process of the viscous crude pour-viscosity reduction compositions of the present invention further, described viscous crude pour-viscosity reduction compositions
Preferably comprise the component of following parts by weight: the surfactant of 25-50 part, the dispersant of 12-18 part, 15-16 part
Inhibitor, the co-emulsifier of 20-25 part.
In order to improve the pour-point depressing process of the viscous crude pour-viscosity reduction compositions of the present invention further, described viscous crude pour-viscosity reduction compositions
Preferably comprise the component of following parts by weight: the surfactant of 25 parts, the dispersant of 18 parts, the inhibitor of 16 parts,
The co-emulsifier of 25 parts.
In order to improve anti-salt and the resistance to elevated temperatures of viscous crude pour-viscosity reduction compositions, described dispersant is by petroleum sodium sulfonate and polyoxy
Vinyl alkyl amine is mixed according to weight ratio 0.1-10:1-10.The petroleum sodium sulfonate added also has good solubilization,
Also can reduce the rock stratum adsorption to crude oil system, improve oil recovery factor.Described dispersant is by petroleum sodium sulfonate and polyoxy
The weight ratio of vinyl alkyl amine more preferably 1-5:1-4.The quality that described polyoxyethylene alkyl amine is shared in dispersant
Percentage composition is not less than 9%.It is further preferred that the weight/mass percentage composition that described polyoxyethylene alkyl amine is shared in dispersant
It 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、R2Being the alkyl group of 12-18 for carbon number, the value of x, y, n is:
The value of x+y be the value of 10-30, n be 10-30.
In order to improve the emulsification of viscous crude pour-viscosity reduction compositions of the present invention, described surfactant is alkylphenol-polyethenoxy
One or more in ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkyl sodium sulfate.Preferably,
Alkyl phenol polyethenoxy ether sodium sulfate is OPEO sodium sulfate, nonylphenol polyoxyethylene ether sulfate, dodecane
One or more in base phenol polyethenoxy ether sodium sulfate, the degree of polymerization of polyoxyethylene groups in alkyl phenol polyethenoxy ether sodium sulfate
For 2-10.Preferably, the structural formula of polyoxyethylene fatty alkyl ether sulfonate is RO (CH2CH2O)nSO3Na, wherein R is
Carbon number is the alkyl group of 12-18, and the value of n is 2 or 3.It is further preferred that fatty alcohol-polyoxyethylene ether sulfonic acid
Sodium is one or more in pentadecanol sodium sulfonate of ethoxylated, polyoxyethylene octadecanol sodium sulfonate.Polyoxyethylene ether alkane
Base sodium sulfate is one or more in alkylpolyoxyethylene sodium sulfate, Steareth sodium sulfate, its
The degree of polymerization of middle polyoxyethylene groups is 3.
Described inhibitor is the one in disodiumedetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate or several
Kind.
Described co-emulsifier is the one or several in petroleum sodium sulfonate, sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
Kind.
The technical scheme of the viscous crude pour point depression and viscosity reduction agent of the present invention is as follows:
A kind of viscous crude pour point depression and viscosity reduction agent, is made up of the component of following percentage by weight: the surfactant of 25-55%, 5-20%
Dispersant, the inhibitor of 15-20%, the co-emulsifier of 20-50%, surplus is water；Described dispersant includes polyoxyethylene alkane
Base amine, described polyoxyethylene alkyl amine weight/mass percentage composition shared by dispersant is not less than 9%.
In order to improve the emulsification of viscous crude pour-viscosity reduction compositions of the present invention, described surfactant is alkylphenol-polyethenoxy
One or more in ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkyl sodium sulfate.
Described inhibitor is the one in disodiumedetate, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate or several
Kind.
Described co-emulsifier is the one or several in petroleum sodium sulfonate, sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate
Kind.
It is further preferred that the weight/mass percentage composition that described polyoxyethylene alkyl amine is shared by dispersant is not less than 16%.
The technical scheme of the preparation method of the viscous crude pour point depression and viscosity reduction agent of the present invention is as follows:
The preparation method of above-mentioned viscous crude pour point depression and viscosity reduction agent, comprises the steps:
Described inhibitor is added to the water, makes solution, more described surfactant, dispersant, co-emulsifier are added institute
State in solution, make mixed liquor, to obtain final product；
The application in terms of viscous crude pour-viscosity reduction of the viscous crude pour point depression and viscosity reduction agent of the present invention, comprises the steps:
The viscous crude pour point depression and viscosity reduction agent of the present invention is added water and mixes to obtain mixed liquor, described mixed liquor is added in pit shaft, form water bag
Oil type emulsion.
In described mixed liquor, surfactant, dispersant, inhibitor, the gross mass percentage composition of co-emulsifier are 5-25%.
Described mixed liquor is added in pit shaft by the persistently dropping such as oil, collar-shaped space or hollow rod or interval.
Surfactant in the viscous crude pour-viscosity reduction compositions of the present invention, dispersant, inhibitor, co-emulsifier compound, right
Viscous crude has the strongest reducing viscosity by emulsifying effect, and the viscous crude of high condensation point is had good pour-point depressing process.To gum asphaltic content
Be 40%, freezing point be that the viscous crude of 40 DEG C plays good reducing viscosity by emulsifying effect, only add this fall that mass fraction is 0.5%
Solidifying thinner product, viscosity break ratio is up to more than 99%, and pour point depression amplitude is up to more than 15 DEG C, it is possible to well solve crude oil well pump
The problem that resistance is big and wellbore lift is difficult.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is further detailed.
Embodiment 1
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 30g surfactant nonyl phenol gathers
Oxygen vinyl Ether sodium sulfate, 10g dispersant, 15g inhibitor disodiumedetate, 30g co-emulsifier sodium lignin sulfonate；
Dispersant is mixed with 8g 18-amine. polyoxyethylene ether by 2g petroleum sodium sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned nonylphenol polyoxyethylene ether sulfate is 10, polyoxy in 18-amine. polyoxyethylene ether
The degree of polymerization of vinyl is 10.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment, is made up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 15g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Being added by inhibitor in 15g deionized water, stirring is completely dissolved to inhibitor, is sequentially added into surfactant, dispersion
Agent, co-emulsifier, stirring, to obtain final product.
Embodiment 2
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 40g surfactant pentadecanol gathers
Oxygen vinyl Ether sodium sulfonate, 5g dispersant 18-amine. polyoxyethylene ether, 18g inhibitor aminotriacetic acid, 25g co-emulsifier wood
Quality sodium sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned pentadecanol sodium sulfonate of ethoxylated is 2, polyoxy in 18-amine. polyoxyethylene ether
The degree of polymerization of vinyl is 12；
The viscous crude pour point depression and viscosity reduction agent of the present embodiment, is made up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 12g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Being added by inhibitor in 12g deionized water, stirring is completely dissolved to inhibitor, is sequentially added into surfactant, dispersion
Agent, co-emulsifier, stirring, to obtain final product.
Embodiment 3
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 50g surfactant octadecanol gathers
Oxygen vinyl Ether sodium sulfonate, 12g dispersant, 15g inhibitor ammonium citrate, 20g co-emulsifier lauryl alcohol polyethers sodium sulfonate；
Dispersant is mixed with 2g 18-amine. polyoxyethylene ether by 10g petroleum sodium sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned polyoxyethylene octadecanol sodium sulfonate is 3, polyoxy in 18-amine. polyoxyethylene ether
The degree of polymerization of vinyl is 30.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment, is made up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 3g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Inhibitor is added in 3g deionized water, stirring be completely dissolved to inhibitor, be sequentially added into surfactant, dispersant,
Co-emulsifier, stirring, to obtain final product.
Embodiment 4
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 25g surfactant nonyl phenol gathers
Oxygen vinyl Ether sodium sulfate, 18g dispersant, 16g inhibitor sodium potassium tartrate tetrahydrate, 25g co-emulsifier petroleum sodium sulfonate；
Dispersant is mixed with 3g 18-amine. polyoxyethylene ether by 15g petroleum sodium sulfonate；
The polyoxyethylene groups degree of polymerization in above-mentioned nonylphenol polyoxyethylene ether sulfate is 10, polyoxy in 18-amine. polyoxyethylene ether
The degree of polymerization of vinyl is 15.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment, is made up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 16g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Being added by inhibitor in 16g deionized water, stirring is completely dissolved to inhibitor, is sequentially added into surfactant, dispersion
Agent, co-emulsifier, stirring, to obtain final product.
Embodiment 5
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 55g surfactant, 5g disperse
Agent, 16g inhibitor, 20g co-emulsifier petroleum sodium sulfonate；
Surfactant is mixed by 25g alkylpolyoxyethylene sodium sulfate and 30g polyoxyethylene octadecanol sodium sulfonate
Arrive；
Dispersant is mixed with 2g hexadecylamine polyoxyethylene ether by 3g petroleum sodium sulfonate；
Inhibitor is mixed to get by 8g sodium potassium tartrate tetrahydrate and 8g disodiumedetate；
The polyoxyethylene groups degree of polymerization in above-mentioned alkylpolyoxyethylene sodium sulfate is 3, polyoxyethylene octadecanol sulfonic acid
The polyoxyethylene groups degree of polymerization in sodium is 3, and in hexadecylamine polyoxyethylene ether, the degree of polymerization of polyoxyethylene groups is 20.
The viscous crude pour point depression and viscosity reduction agent of the present embodiment, is made up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 4g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Inhibitor is added in 4g deionized water, stirring be completely dissolved to inhibitor, be sequentially added into surfactant, dispersant,
Co-emulsifier, stirring, to obtain final product.
Embodiment 6
The viscous crude pour-viscosity reduction compositions of the present embodiment, is made up of the component of following weight: 25g surfactant sodium dodecyl base
Phenol polyethenoxy ether sodium sulfonate, 11g dispersant, 17g inhibitor disodiumedetate, 40g co-emulsifier；
Dispersant is mixed with 1g lauryl amine polyoxyethylene ether by 10g petroleum sodium sulfonate；
Co-emulsifier 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 polyoxyethylene
In 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 up of the water of above-mentioned viscous crude pour-viscosity reduction compositions with 7g.
The preparation method of the viscous crude pour point depression and viscosity reduction agent of the present embodiment comprises the steps:
Inhibitor is added in 7g deionized water, stirring be completely dissolved to inhibitor, be sequentially added into surfactant, dispersant,
Co-emulsifier, stirring, to obtain final product.
Test example
The performance of the viscous crude pour point depression and viscosity reduction agent in testing example 1-6 in accordance with the following steps:
1) take An Peng oil field dolomite viscous crude (gum asphaltic content be 40%, freezing point be 40 DEG C) 280g, be placed in
Heated at constant temperature 1h in water-bath, free water therein and bubble are removed in stirring.
2) take 120g and pacify canopy oil field stratum water, be added thereto to the viscous crude pour point depression and viscosity reduction agent of the present invention of 0.5%, make water-soluble
Liquid.
3) by step 1) in preheated viscous crude and step 2) in the viscous crude pour point depression and viscosity reduction agent aqueous solution for preparing, be placed in
In 50 DEG C of water-baths, regulation motor stirrer rotating speed is 250r/min, stirs 10 minutes, obtains emulsifying viscous crude.
4) test the thick oil viscosity of emulsifying with NXS-11A type rotating cylinder viscometer, measure with CGWX-201A petroleum products questionable points
The freezing point of instrument test emulsifying viscous crude, test result is shown in Table 1.
The test result of the viscous crude pour point depression and viscosity reduction agent in table 1 embodiment 1-6
The viscous crude that the viscous crude pour point depression and viscosity reduction agent of the present invention can be 40% to gum asphaltic content, freezing point is 40 DEG C plays
Well reducing viscosity by emulsifying effect, only adds this pour point depression and viscosity reduction agent product that mass fraction is 0.5%, just can make 50 DEG C of viscosity
Realize emulsifying for the viscous crude that 23000mPa s, freezing point are 40 DEG C, form oil-in-water emulsion, viscosity break ratio up to 99% with
On, emulsion temperature is reduced to less than 30 DEG C and still has preferable mobility, and pour point depression amplitude is up to more than 15 DEG C, it is possible to very
Good solves the problem that crude oil well pump resistance is big and wellbore lift is difficult.
Time specifically used, the stirring of the viscous crude pour-viscosity reduction compositions of the present invention and water is mixed, be configured to 5%～25% water-soluble
Liquid；(oil well day production fluid is added in pit shaft to by the persistently dropping such as oil, collar-shaped space or hollow rod or interval
Amount is by 10～20m3Considering, joined technical considers that persistently dropping or every day add once) so that it is connect in the wellbore with crude oil
Touch mixing, form oil-in-water emulsion, solve crude oil and enter pump difficulty and the problem of wellbore lift difficulty.
Claims (10)
1. a viscous crude pour-viscosity reduction compositions, it is characterised in that include the component of following parts by weight: the table of 25-55 part
Face activating agent, the dispersant of 5-20 part, the inhibitor of 15-20 part, the co-emulsifier of 20-50 part；Described dispersant includes
Polyoxyethylene alkyl amine, described polyoxyethylene alkyl amine weight/mass percentage composition shared by dispersant is not less than 9%.
2. viscous crude pour-viscosity reduction compositions as claimed in claim 1, it is characterised in that described dispersant is by petroleum sodium sulfonate
It is mixed according to weight ratio 0.1-10:1-10 with polyoxyethylene alkyl amine.
3. viscous crude pour-viscosity reduction compositions as claimed in claim 1, it is characterised in that described surfactant is alkyl phenol
One or more in polyethenoxy ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkyl sodium sulfate.
4. viscous crude pour-viscosity reduction compositions as claimed in claim 1, it is characterised in that described inhibitor is ethylenediamine tetrem
One or more in acid disodium, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate.
5. viscous crude pour-viscosity reduction compositions as claimed in claim 1, it is characterised in that described co-emulsifier is mahogany acid
One or more in sodium, sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate.
6. a viscous crude pour point depression and viscosity reduction agent, it is characterised in that be made up of the component of following percentage by weight: the surface of 25-55%
Activating agent, the dispersant of 5-20%, the inhibitor of 15-20%, the co-emulsifier of 20-50%, the water of 3-15%；Described dispersant
Including polyoxyethylene alkyl amine, described polyoxyethylene alkyl amine weight/mass percentage composition shared by dispersant is not less than 9%.
7. viscous crude pour point depression and viscosity reduction agent as claimed in claim 6, it is characterised in that described surfactant is alkyl phenol polyoxy
One or more in vinyl Ether sodium sulfate, polyoxyethylene fatty alkyl ether sulfonate, polyoxyethylene ether alkyl sodium sulfate.
8. viscous crude pour point depression and viscosity reduction agent as claimed in claim 6, it is characterised in that described inhibitor is ethylenediaminetetraacetic acid two
One or more in sodium, aminotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate.
9. viscous crude pour point depression and viscosity reduction agent as claimed in claim 6, it is characterised in that described co-emulsifier be petroleum sodium sulfonate,
One or more in sodium lignin sulfonate, Dodecyl Polyoxyethylene Ether sodium sulfonate.
10. the preparation method of viscous crude pour point depression and viscosity reduction agent as claimed in claim 6, it is characterised in that comprise the steps:
Described inhibitor is added to the water, makes solution, more described surfactant, dispersant, co-emulsifier are added institute
State in solution, make mixed liquor, to obtain final product.
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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 |
| CN108975646A (en) * | 2018-09-11 | 2018-12-11 | 浙江奇彩环境科技股份有限公司 | A kind of greasy filth demulsifier and its preparation method and application |
| CN109504360A (en) * | 2019-01-14 | 2019-03-22 | 克拉玛依市三达新技术股份有限公司 | A kind of heavy crude thinner and its preparation method and application |
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| CN115386359A (en) * | 2022-11-01 | 2022-11-25 | 山东东方盛嘉石油科技有限责任公司 | Viscous oil cold-production dispersing huff and puff viscosity reducer and preparation method thereof |
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| CN107903885A (en) * | 2017-10-19 | 2018-04-13 | 中国石油天然气股份有限公司 | Viscosity reducer and preparation method and application thereof |
| CN107903885B (en) * | 2017-10-19 | 2020-06-09 | 中国石油天然气股份有限公司 | Viscosity reducer and preparation method and application thereof |
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| CN109504360A (en) * | 2019-01-14 | 2019-03-22 | 克拉玛依市三达新技术股份有限公司 | A kind of heavy crude thinner and its preparation method and application |
| CN109504360B (en) * | 2019-01-14 | 2020-11-10 | 克拉玛依市三达新技术股份有限公司 | Thick oil viscosity reducer and preparation method and application thereof |
| CN110776894A (en) * | 2019-03-07 | 2020-02-11 | 北京盛昌百年石油科技有限公司 | Water-based dispersion viscosity-reducing pour point depressant and preparation method thereof |
| CN111320975A (en) * | 2020-03-24 | 2020-06-23 | 东营施普瑞石油工程技术有限公司 | Emulsion type high-wax-content crude oil pour point depression drag reducer and preparation method thereof |
| CN111320975B (en) * | 2020-03-24 | 2022-03-29 | 东营施普瑞石油工程技术有限公司 | Emulsion type high-wax-content crude oil pour point depression drag reducer and preparation method thereof |
| CN115386359A (en) * | 2022-11-01 | 2022-11-25 | 山东东方盛嘉石油科技有限责任公司 | Viscous oil cold-production dispersing huff and puff viscosity reducer and preparation method thereof |
| CN116589996A (en) * | 2023-05-09 | 2023-08-15 | 华美孚泰油气增产技术服务有限责任公司 | Liposome high-coagulation thick oil displacement agent and preparation method thereof |
| CN116589996B (en) * | 2023-05-09 | 2024-01-12 | 华美孚泰油气增产技术服务有限责任公司 | Liposome high-coagulation thick oil displacement agent and preparation method thereof |
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