CN109868129A - A kind of heavy oil production thinner and preparation method thereof - Google Patents
A kind of heavy oil production thinner and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of heavy oil production thinners; be made of the component of following mass parts: amphoteric ionic surfactant 15-20%, phthalic acid two (2- ethyl hexyl) ester 5-10%, N-maleoyl chitosan salt 3-5%, polycaprolactone grafted starch nano crystalline substance 1-3%, EDTA-2Na 0.1-0.3%, surplus is water.The present invention also provides a kind of preparation methods of heavy oil production thinner.Amphoteric ionic surfactant and phthalic acid two (2- ethyl hexyl) ester added in inventive formulation plays main viscosity reduction; both other components such as N-maleoyl chitosan salt, polycaprolactone grafted starch nano crystalline substance cooperation use, and play synergistic effect.The thinner that the present invention prepares has special thick oil, super-viscous oil and high asphalt content and has good viscosity reducing effect, and viscosity break ratio can reach 90% or more, have broad application prospect.
Description
Technical field
The invention belongs to oil exploitation auxiliary agent technical fields, and in particular to a kind of heavy oil production thinner and its preparation side
Method.
Background technique
Economic fast development drives market to the wilderness demand of crude oil, and the recoverable reserves of crude oil is just becoming increasingly
Few, within past more than the 100 years time, the mankind have already consumed by 45% or more light crude oil recoverable reserves, conventional crude institute
Surplus few, exploitation has been unable to satisfy demand of the people to resource, and in this case, sight has been transferred to viscous crude by people
In exploitation, the exploitation of viscous crude has become current hot research direction.
China's viscous crude is resourceful, and Exploitation Potential is huge, but the characteristic of viscous crude determines that its exploitation has certain be stranded
It is difficult.Viscous crude is asphalitine and gum level is higher, the biggish crude oil of viscosity, and complicated composition, density and viscosity is all much larger than gently
Matter crude oil, mobility is poor under room temperature, exploits and transport extremely difficult, and industrial cost is expensive.Therefore viscosity of thickened oil, enhancing are reduced
Viscous crude mobility becomes the hot and difficult issue problem of oilfield chemistry research in recent years.
The aggregation of colloid, asphalitine is the reason for causing viscosity of thickened oil big in viscous crude, if can be by colloid in viscous crude and pitch
Matter, which effectively scatter, can reduce viscosity of thickened oil.Common viscosity reduction method mainly adds emulsifying pour depressor and carrys out viscosity reduction,
But the common emulsifying pour depressor in oil field is not suitable for super―heavy oil and the high viscous crude of bitumen content, this is because to special super thick
For the viscous crude of oil and asphalt content greater than 30%, oil-water interfaces will form very strong adsorbed film, and interface film strength is very
Height, viscosity reduction agent molecule are difficult to make viscous oil emulsion that phase inversion occur to reduce viscosity in oil-water interfaces.Therefore, it is necessary to be directed to
This problem develops a kind of new heavy oil production thinner, allows it to be suitable for super―heavy oil and bitumen content is high
The viscosity reduction of viscous crude.
Summary of the invention
The present invention provides a kind of heavy oil production thinner, solve in the prior art thinner to super―heavy oil and drip
The undesirable problem of the high reducing thick oil viscosity effect of green content.
The first purpose of the invention is to provide a kind of heavy oil production thinners, are made of the component of following mass parts:
Amphoteric ionic surfactant 15-20%, phthalic acid two (2- ethyl hexyl) ester 5-10%, N-maleoyl chitosan
Salt 3-5%, polycaprolactone grafted starch nano crystalline substance 1-3%, EDTA-2Na 0.1-0.3%, surplus is water.
Preferably, the heavy oil production is made of with thinner the component of following mass parts: amphoteric ion type surface-active
Agent 20%, phthalic acid two (2- ethyl hexyl) ester 5%, N-maleoyl chitosan salt 4%, polycaprolactone graft starch are received
Rice brilliant 2%, EDTA-2Na 0.2%, water 68.8%.
Preferably, the amphoteric ionic surfactant is lauryl imidazolinium betaine, dodecyl dimethyl sweet tea
Dish alkali or decyl hydroxypropyl sulfobetaines.
Preferably, the N-maleoyl chitosan salt is N-maleoyl chitosan sodium.
Preferably, the partial size of the polycaprolactone grafted starch nano crystalline substance is 50-100nm.
A second object of the present invention is to provide a kind of preparation methods of heavy oil production thinner, comprising the following steps:
Step 1, amphoteric ionic surfactant 15-20%, (the 2- ethyl of phthalic acid two are weighed respectively according to quality
Oneself) ester 5-10%, N-maleoyl chitosan salt 3-5%, polycaprolactone grafted starch nano crystalline substance 1-3%, EDTA-
2Na0.1-0.3%, surplus are water；
Step 2, N-maleoyl chitosan salt weighed in step 1 and EDTA-2Na are dissolved in the weighed water of step 1
In, obtain mixed aqueous solution；
Step 3, by amphoteric ionic surfactant weighed in step 1, phthalic acid two (2- ethyl hexyl) ester, poly-
Caprolactone grafted starch nano crystalline substance is added in the mixed aqueous solution of step 2, and high speed dispersion drops to get to the heavy oil production
Stick.
Preferably, the revolving speed of the step 3 high speed dispersion is 1000-1500r/min, jitter time 15-30min.
Preferably, the N-maleoyl chitosan salt the preparation method is as follows:
Chitosan is distributed in water, is then alternately added maleic anhydride and sodium carbonate every 30min under agitation,
It is repeated 4 times, reacts 6h after adding at room temperature, adjusting reaction solution pH after completion of the reaction is 8-9, refilters and removes unreacted shell
Filtrate dialysis is removed concentration after small molecular weight impurity, is dry to get arriving the N-maleoyl chitosan salt by glycan；
Wherein, chitosan, water, maleic anhydride, sodium carbonate mass ratio be 1:100:0.5:0.5.
Preferably, using mass concentration to adjust reaction solution pH for 5% sodium hydroxide solution is 8-9.
Compared with prior art, the beneficial effects of the present invention are:
1) amphoteric ionic surfactant is added in formula of the invention, zwitterionic surfactant is same
Not only the surfactant containing anionic hydrophilic base but also containing cationic hydrophilic base, the surfactant are easy attached collection and exist in molecule
At oil-water interfaces, the tension for the adsorbed film that oil-water interfaces are formed is reduced, makes the viscous oil emulsion of interface that phase inversion occur, therefore,
It is added in viscous crude, can be very good to be formed using viscous crude as dispersed phase, water is the lotion of continuous phase, even if viscous crude and water shape
At the emulsion of O/W type, to prevent the aggregation of oil droplet；Since the viscosity of continuous phase water is lower, the viscous crude phase in flow process
Friction becomes the friction between water and water in mutually, greatly reduces flow resistance, reduces viscosity of thickened oil.
2) phthalic acid two (2- ethyl hexyl) ester, phthalic acid two (2- ethyl hexyl) are added in formula of the invention
Ester has the characteristics that permeability is high, seepage velocity is fast in system of the invention, the suction that can be formed at rapid osmotic oil-water interfaces
Membrane enters viscous crude tissue area, and asphalitine, colloid are effectively scatter in the oil；Analyze reason, it may be possible to phthalic acid
Two (2- ethyl hexyl) esters be it is a kind of containing polar group, with the macromolecular substances of symmetrical structure, wherein the ester group contained can
It reacts with the polar group in colloid, asphalitine, forms in-situ copolymerization object, break colloid, the space that asphalitine is woven into
Network structure, simultaneously；Symmetrical chain alkyl can fill around copolymer in phthalic acid two (2- ethyl hexyl) ester
Divide stretching, extension, form thinner melt layer, play shielding action, so that copolymer periphery is formed a nonpolar environment, prevent glue
Matter, pitch reassemble.
3) brilliant added with N-maleoyl chitosan sodium and polycaprolactone grafted starch nano in formula of the invention,
Under the infiltration peptizaiton of phthalic acid two (2- ethyl hexyl) ester, N-maleoyl chitosan sodium can be with O-phthalic
Sour two (2- ethyl hexyl) esters are dispensed through the adsorbed film formed at oil-water interfaces, between colloid and pitch sheet molecule, portion
It decouples and dissipates aggregation made of plane overlapping is piled up, so that structure is fluffed scattered, reduce viscous crude cohesive force, under this effect, adjacent benzene
Dioctyl phthalate two (2- ethyl hexyl) ester can efficiently react with the polar group in colloid, asphalitine, form in-situ copolymerization
Object further plays the viscosity reduction effect of phthalic acid two (2- ethyl hexyl) ester；
Polycaprolactone grafted starch nano crystalline substance has amphiphilic performance, and polar group therein is adsorbed on resin and asphalt table
Face, hydrophobic grouping enter in asphalitine, and this distribution form reduces the effect of the dipole between asphaltene molecules, and hydrogen bond action subtracts
Its small binding ability, prevents it from reassembling.
4) be added with EDTA-2Na in formula of the invention, EDTA-2Na can chelate the metal that is encountered in oil recovery process from
Son avoids metal ion and other raw materials from having an effect, to influence the viscosity-reducing performance of other raw materials.
5) the thinner viscosity reducing effect that the present invention prepares is good, practical, improves the recovery ratio of crude oil, has extensive
Application prospect.
Specific embodiment
In order to enable those skilled in the art to more fully understand, technical solution of the present invention is practiced, below with reference to specific
The invention will be further described for embodiment, but illustrated embodiment is not as a limitation of the invention.
The test method of actual conditions is not specified in following embodiments, according to conventional methods in the art with condition into
Row, the raw material is commercially available unless otherwise specified.
It should be noted that the preparation method of polycaprolactone grafted starch nano crystalline substance is referring to king just 2014 in the present invention
What the paper " preparation of polycaprolactone grafted starch nano crystalline substance " being published on chemistry notification the 2nd phase of volume 77 was worked it out.
Embodiment 1
A kind of heavy oil production thinner, is made of the component of following quality: lauryl imidazolinium betaine 200g, adjacent benzene
Dioctyl phthalate two (2- ethyl hexyl) ester 50g, N-maleoyl chitosan sodium 40g, the polycaprolactone graft starch that partial size is 50nm
Nanocrystalline 20g, EDTA-2Na 2g, water 688g.
It is specific the preparation method is as follows:
Step 1, lauryl imidazolinium betaine 200g, phthalic acid two (2- ethyl hexyl) ester are weighed respectively according to quality
50g, N-maleoyl chitosan sodium 40g, polycaprolactone grafted starch nano crystalline substance 20g, EDTA-2Na 2g, water 688g；
Step 2, N-maleoyl chitosan sodium weighed in step 1 and EDTA-2Na are dissolved in the weighed water of step 1
In, obtain mixed aqueous solution；
Step 3, by lauryl imidazolinium betaine weighed in step 1, phthalic acid two (2- ethyl hexyl) ester, gather oneself
Lactone grafted starch nano crystalline substance is added in the mixed aqueous solution of step 2, the high speed dispersion 30min under the speed of 1000r/min,
Obtain heavy oil production thinner.
Embodiment 2
A kind of heavy oil production thinner, is made of the component of following quality: dodecyldimethylammonium hydroxide inner salt 150g, neighbour
Phthalic acid two (2- ethyl hexyl) ester 80g, N-maleoyl chitosan sodium 30g, the polycaprolactone that partial size is 80nm are grafted and form sediment
The nanocrystalline 10g of powder, EDTA-2Na 1g, water 729g.
It is specific the preparation method is as follows:
Step 1, dodecyldimethylammonium hydroxide inner salt 150g, phthalic acid two (2- ethyl hexyl) are weighed respectively according to quality
Ester 80g, N-maleoyl chitosan sodium 30g, polycaprolactone grafted starch nano crystalline substance 10g, EDTA-2Na 1g, water 729g；
Step 2, N-maleoyl chitosan sodium weighed in step 1 and EDTA-2Na are dissolved in the weighed water of step 1
In, obtain mixed aqueous solution；
Step 3, by dodecyldimethylammonium hydroxide inner salt weighed in step 1, phthalic acid two (2- ethyl hexyl) ester, poly-
Caprolactone grafted starch nano crystalline substance is added in the mixed aqueous solution of step 2, the high speed dispersion under the speed of 1500r/min
15min is to get to heavy oil production thinner.
Embodiment 3
A kind of heavy oil production thinner, is made of the component of following quality: decyl hydroxypropyl sulfobetaines 180g,
Phthalic acid two (2- ethyl hexyl) ester 100g, N-maleoyl chitosan sodium 50g, the polycaprolactone that partial size is 100nm connect
Branch nanometer starch crystal 30g, EDTA-2Na 3g, water 637g.
It is specific the preparation method is as follows:
Step 1, decyl hydroxypropyl sulfobetaines 180g, (the 2- ethyl of phthalic acid two are weighed respectively according to quality
Oneself) ester 100g, N-maleoyl chitosan sodium 50g, polycaprolactone grafted starch nano crystalline substance 30g, EDTA-2Na 3g, water
637g；
Step 2, N-maleoyl chitosan sodium weighed in step 1 and EDTA-2Na are dissolved in the weighed water of step 1
In, obtain mixed aqueous solution；
Step 3, by decyl hydroxypropyl sulfobetaines weighed in step 1, phthalic acid two (2- ethyl hexyl) ester,
Polycaprolactone grafted starch nano crystalline substance is added in the mixed aqueous solution of step 2, the high speed dispersion under the speed of 1200r/min
20min is to get to heavy oil production thinner.
It should be noted that N-maleoyl chitosan salt the preparation method is as follows:
Chitosan is distributed in water, is then alternately added maleic anhydride and sodium carbonate every 30min under agitation,
It is repeated 4 times, reacts 6h after adding at room temperature, adjust reaction with the sodium hydroxide solution that mass concentration is 5% after completion of the reaction
Liquid pH is 8-9, refilters and removes unreacted chitosan, removes concentration after small molecular weight impurity, is dry to get arriving filtrate dialysis
N-maleoyl chitosan salt；
Wherein, chitosan, water, maleic anhydride, sodium carbonate mass ratio be 1:100:0.5:0.5.
In order to illustrate effect, the present invention is also provided with comparative example, specific as follows:
Comparative example 1
A kind of heavy oil production thinner, component formula is with embodiment 1, the difference is that in the formula of comparative example 1
Phthalic acid two (2- ethyl hexyl) ester is not added.And specifically preparation method is also with embodiment 1, the difference is that preparation side
Step 3 is free of the addition step of phthalic acid two (2- ethyl hexyl) ester in method.
Comparative example 2
A kind of heavy oil production thinner, component formula is with embodiment 1, the difference is that in the formula of comparative example 2
N-maleoyl chitosan sodium is not added.And specifically preparation method is also with embodiment 1, the difference is that in preparation method
Step 2 is free of the addition step of N-maleoyl chitosan sodium.
Comparative example 3
A kind of heavy oil production thinner, component formula is with embodiment 1, the difference is that in the formula of comparative example 3
It is brilliant polycaprolactone grafted starch nano is not added.And specifically preparation method is also with embodiment 1, the difference is that preparation method
Middle step 3 is free of the addition step of polycaprolactone grafted starch nano crystalline substance.
Comparative example 4
A kind of heavy oil production thinner, component formula is with embodiment 1, the difference is that in the formula of comparative example 4
It does not add N-maleoyl chitosan sodium and polycaprolactone grafted starch nano is brilliant.And specific preparation method also same embodiment
1, the difference is that step 2 is free of the addition step of N-maleoyl chitosan sodium in preparation method, step 3, which is free of, gathers oneself
The addition step of lactone grafted starch nano crystalline substance.
Comparative example 5
A kind of heavy oil production thinner, is made of the component of following quality: lauryl imidazolinium betaine 200g,
EDTA-2Na 2g, water 688g.
It is specific the preparation method is as follows:
Step 1, lauryl imidazolinium betaine 200g, EDTA-2Na 2g, water 688g are weighed respectively according to quality；
Step 2, EDTA-2Na weighed in step 1 is dissolved in the weighed water of step 1, obtains EDTA-2Na aqueous solution；
Step 3, lauryl imidazolinium betaine weighed in step 1 is added in the EDTA-2Na aqueous solution of step 2,
High speed dispersion 30min is under the speed of 1000r/min to get to heavy oil production thinner.
In order to verify the viscosity reducing effect for the heavy oil production thinner that 1-3 of the embodiment of the present invention and comparative example 1-5 are prepared,
The present invention has done following test.
One, to the viscosity reducing effect of special thick oil
Special thick oil is taken, the mass content of the special thick oil studies on asphaltene is 23.16%, and the viscosity at 50 DEG C is 28580,
8 parts, every part of 500g are divided into, one of embodiment 1-3 and comparative example 1-5 thinner are separately added into every part of special thick oil,
And the additional amount of thinner is 2.5g, is then placed in 50 DEG C of water-baths heat preservation after mixing evenly and stands 60min, then is measured special thick
The viscosity of oil.
Wherein, special thick oil viscosity uses Brookfield Ivdv-III type rheometer test, and the spy after thinner is added is thick
Every part of oil samples is measured in parallel 3 times, is averaged, and handles oil sample tested viscosity at 50 DEG C after preceding oil sample and processing, tool
Body test result is shown in Table 1.
The viscosity reducing effect of 1 thinner of table
Two, to the viscosity reducing effect of super-viscous oil
Super-viscous oil is taken, the mass content of the super-viscous oil studies on asphaltene is 37.85%, and the viscosity at 50 DEG C is 73000,
8 parts, every part of 500g are divided into, one of embodiment 1-3 and comparative example 1-5 thinner are separately added into every part of super-viscous oil,
And the additional amount of thinner is 3g, is then placed in 50 DEG C of water-baths heat preservation after mixing evenly and stands 60min, then measures super-viscous oil
Viscosity.
The measurement method of super-viscous oil viscosity is identical with special thick oil Viscosity Measurement Methods, and specific test result is shown in Table 2.
The viscosity reducing effect of 2 thinner of table
| Project | Oil sample viscosity (mPa.s) before handling | Oil sample viscosity (mPa.s) after processing | Viscosity break ratio (%) |
| Embodiment 1 | 73000 | 5400 | 92.6 |
| Embodiment 2 | 73000 | 4960 | 93.2 |
| Embodiment 3 | 73000 | 5320 | 92.7 |
| Comparative example 1 | 73000 | 21680 | 70.3 |
| Comparative example 2 | 73000 | 14670 | 79.9 |
| Comparative example 3 | 73000 | 9920 | 86.4 |
| Comparative example 4 | 73000 | 28320 | 61.2 |
| Comparative example 5 | 73000 | 45180 | 38.1 |
As can be seen from Table 1 and Table 2, heavy crude thinner made from embodiment 1-3 is to special thick oil, super-viscous oil and asphalitine
Content is preferable greater than 30% or more reducing thick oil viscosity effect, and viscosity break ratio has reached 90% or more；
Comparative example 1 prepare heavy crude thinner to the viscosity break ratio of special thick oil, super-viscous oil 70% or so, this is because right
In the formula of ratio 1 do not contain phthalic acid two (2- ethyl hexyl) ester, illustrate (2- ethyl hexyl) ester of phthalic acid two for
The viscosity reducing effect of whole system influences very big；
Heavy crude thinner drop prepared by comparative example 2,80% or so, compares embodiment to the viscosity break ratio of special thick oil, super-viscous oil
1-3 is poor, but good compared with comparative example 1, without addition N-maleoyl chitosan sodium in comparative example 2, illustrates the acylated shell of maleic anhydride
Glycan sodium has certain influence to the viscosity reducing effect of whole system, but big not as good as the influence of phthalic acid two (2- ethyl hexyl) ester；
Heavy crude thinner drop prepared by comparative example 3 to the viscosity break ratio of special thick oil, super-viscous oil 85% or more, 90% with
Under, it is not much different with embodiment 1-3, the effect compared with comparative example 1-2 is good, without addition polycaprolactone graft starch in comparative example 3
It is nanocrystalline, it is little to illustrate that polycaprolactone grafted starch nano crystalline substance influences the viscosity reducing effect of system；
Heavy crude thinner prepared by comparative example 4 is dropped to the viscosity break ratio of special thick oil, super-viscous oil between 57-61%, effect
It is poor compared with comparative example 1-3, because both without addition N-maleoyl chitosan sodium in the formula of comparative example 4, it is also poly- without addition
Caprolactone grafted starch nano is brilliant, illustrates that both has synergistic function, can be with surfactant and O-phthalic
Sour two (2- ethyl hexyl) esters cooperate viscosity reduction；
Heavy crude thinner drop prepared by comparative example 5 is to the viscosity break ratio of special thick oil, super-viscous oil 50% hereinafter, and to super thick
The viscosity break ratio of oil only has 38.1%, and effect is worst, and comparative example 5, which is equivalent to, contains only surfactant, and surfactant is to entire
The viscosity reducing effect of system is limited, so simple surfactant viscosity reducing effect is paid no attention under conditions of not adding any auxiliary agent
Think.
In summary, each component interaction in heavy crude thinner drop formula of the present invention, synergistic, reaching jointly makes spy
The purpose of viscous crude, super-viscous oil viscosity reduction, and viscosity reducing effect is significant.
The present invention describes preferred embodiment, and once a person skilled in the art knows basic creative general
It reads, then additional changes and modifications may be made to these embodiments.So it includes preferred real that the following claims are intended to be interpreted as
It applies example and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of heavy oil production thinner, which is characterized in that be made of the component of following mass parts: amphoteric ion type surface is living
Property agent 15-20%, phthalic acid two (2- ethyl hexyl) ester 5-10%, N-maleoyl chitosan salt 3-5%, polycaprolactone
Grafted starch nano crystalline substance 1-3%, EDTA-2Na 0.1-0.3%, surplus is water.
2. heavy oil production thinner according to claim 1, which is characterized in that be made of the component of following mass parts:
Amphoteric ionic surfactant 20%, phthalic acid two (2- ethyl hexyl) ester 5%, N-maleoyl chitosan salt 4%,
Polycaprolactone grafted starch nano crystalline substance 2%, EDTA-2Na 0.2%, water 68.8%.
3. heavy oil production thinner according to claim 1 or 2, which is characterized in that the amphoteric ion type surface is living
Property agent be lauryl imidazolinium betaine, dodecyldimethylammonium hydroxide inner salt or decyl hydroxypropyl sulfobetaines.
4. heavy oil production thinner according to claim 1 or 2, which is characterized in that the acylated shell of the maleic anhydride is poly-
Sugared salt is N-maleoyl chitosan sodium.
5. heavy oil production thinner according to claim 1 or 2, which is characterized in that the polycaprolactone graft starch
Nanocrystalline partial size is 50-100nm.
6. the preparation method of heavy oil production thinner according to claim 1, which comprises the following steps:
Step 1, amphoteric ionic surfactant 15-20%, phthalic acid two (2- ethyl hexyl) are weighed respectively according to quality
Ester 5-10%, N-maleoyl chitosan salt 3-5%, polycaprolactone grafted starch nano crystalline substance 1-2%, EDTA-2Na 0.1-
0.3%, surplus is water；
Step 2, N-maleoyl chitosan salt weighed in step 1 and EDTA-2Na are dissolved in the weighed water of step 1, are obtained
To mixed aqueous solution；
Step 3, by amphoteric ionic surfactant weighed in step 1, phthalic acid two (2- ethyl hexyl) ester, gather in oneself
Ester grafted starch nano crystalline substance is added in the mixed aqueous solution of step 2, and high speed dispersion is to get to the heavy oil production viscosity reduction
Agent.
7. the preparation method of heavy oil production thinner according to claim 6, which is characterized in that high in the step 3
The revolving speed of speed dispersion is 1000-1500r/min, jitter time 15-30min.
8. the preparation method of heavy oil production thinner according to claim 6, which is characterized in that the maleic anhydride acyl
Change chitosan salt the preparation method is as follows:
Chitosan is distributed in water, is then alternately added maleic anhydride and sodium carbonate every 30min under agitation, is repeated
4 times, 6h is reacted after adding at room temperature, adjusting reaction solution pH after completion of the reaction is 8-9, and it is poly- to refilter the unreacted shell of removing
Filtrate dialysis is removed concentration after small molecular weight impurity, is dry to get arriving the N-maleoyl chitosan salt by sugar；
Wherein, chitosan, water, maleic anhydride, sodium carbonate mass ratio be 1:100:0.5:0.5.
9. the preparation method of heavy oil production thinner according to claim 8, which is characterized in that use mass concentration for
It is 8-9 that 5% sodium hydroxide solution, which adjusts reaction solution pH,.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669491A (en) * | 2019-10-24 | 2020-01-10 | 无棣荣业网具有限公司 | High-dispersity thick oil viscosity reducer and preparation method thereof |
| CN116285929A (en) * | 2021-12-08 | 2023-06-23 | 天津大港油田滨港集团博弘石油化工有限公司 | Water-based thickened oil viscosity reducer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768462A (en) * | 2008-12-31 | 2010-07-07 | 中国石油化工股份有限公司 | Emulsifying and viscosity-decreasing method of thick oil |
| CN106536672A (en) * | 2014-05-26 | 2017-03-22 | I·A·伊松萨瑞布雷杜 | Oil-based compositions for dispersing asphaltenes and paraffins |
| US20170190949A1 (en) * | 2016-01-06 | 2017-07-06 | Ecolab Usa Inc. | Temperature-stable paraffin inhibitor compositions |
-
2019
- 2019-04-10 CN CN201910282853.1A patent/CN109868129B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768462A (en) * | 2008-12-31 | 2010-07-07 | 中国石油化工股份有限公司 | Emulsifying and viscosity-decreasing method of thick oil |
| CN106536672A (en) * | 2014-05-26 | 2017-03-22 | I·A·伊松萨瑞布雷杜 | Oil-based compositions for dispersing asphaltenes and paraffins |
| US20170190949A1 (en) * | 2016-01-06 | 2017-07-06 | Ecolab Usa Inc. | Temperature-stable paraffin inhibitor compositions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669491A (en) * | 2019-10-24 | 2020-01-10 | 无棣荣业网具有限公司 | High-dispersity thick oil viscosity reducer and preparation method thereof |
| CN116285929A (en) * | 2021-12-08 | 2023-06-23 | 天津大港油田滨港集团博弘石油化工有限公司 | Water-based thickened oil viscosity reducer and preparation method thereof |
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