CN109321222A - A kind of emulsion-type paraffin remover and its preparation method and application - Google Patents
A kind of emulsion-type paraffin remover and its preparation method and application Download PDFInfo
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- CN109321222A CN109321222A CN201811481326.5A CN201811481326A CN109321222A CN 109321222 A CN109321222 A CN 109321222A CN 201811481326 A CN201811481326 A CN 201811481326A CN 109321222 A CN109321222 A CN 109321222A
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- gasoline
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- oil
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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 30
- 239000002904 solvent Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003129 oil well Substances 0.000 claims abstract description 18
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims abstract description 4
- 239000005639 Lauric acid Substances 0.000 claims abstract description 4
- -1 dodecanoic acid sorbitol ester Chemical class 0.000 claims abstract description 4
- 239000000600 sorbitol Substances 0.000 claims abstract description 4
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 38
- 239000003502 gasoline Substances 0.000 claims description 28
- 239000012046 mixed solvent Substances 0.000 claims description 23
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 22
- 238000004090 dissolution Methods 0.000 claims description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000004064 cosurfactant Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000006071 cream Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 2
- 239000001993 wax Substances 0.000 abstract description 45
- 230000000694 effects Effects 0.000 abstract description 14
- 239000000839 emulsion Substances 0.000 abstract description 7
- 239000003960 organic solvent Substances 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 22
- 239000010779 crude oil Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 239000006210 lotion Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000220324 Pyrus Species 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 150000008107 benzenesulfonic acids Chemical class 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021017 pears Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention provides a kind of emulsion-type paraffin remover and its preparation method and application, the paraffin remover includes following component by volumn concentration: oil-based solvent 55-60%, surfactant 0.5-3%, surplus are water；Wherein, the surfactant is neopelex and/or lauric acid/dodecanoic acid sorbitol ester.Wax removal agent prescription provided by the invention is simple, on the one hand the surfactant selected can make System forming stable emulsion, stable time long at room temperature；On the other hand when paraffin remover is added to stratum, and temperature increases, system can be demulsified rapidly, enable the molten wax effect of the performance of the bigger efficiency of organic solvent.And the surfactant that the present invention selects can also form water membrane on oil pipe surface, play the role of reducing oil well wax deposit amount, extend period of removing the wax.
Description
Technical field
The invention belongs to oilfield chemistry application field, it is related to a kind of emulsion-type paraffin remover and its preparation method and application.
Background technique
Crude oil in China is mostly waxy crude oil, and paraffin content is even as high as 40%, and the wax in crude oil is usual under formation conditions
Exist in liquid form, when crude oil is from the recovery process that underground is extracted into ground, with the decline of temperature and pressure, crude oil dewaxing
Ability decline, wax damage reservoir, oil well paraffinication is tight from being precipitated and being deposited in around the borehole wall in production casing in crude oil
Ghost image rings the normal work of oil well, and oil well output reduction or oil well is caused to stop production.Therefore, the Paraffin Removal of oil well is to guarantee the content of wax
The important technique measure that crude oil normally produces.
In order to solve the problems, such as oil field wax deposition, for a long time all using paraffin scraper or the dewaxing method of hot-water flooding, these sides
Method is very many and diverse, and oil well must stop production for a long time, brings certain economic loss.Oil field is removed using paraffin removing with chemical method method
Product wax, the normal production and other operations that not only will not influence oil well use certain medicaments in addition to it can receive Paraffin Removal effect
Pour point depression, viscosity reduction and the effect of de-plugging can also be played；Paraffin removing with chemical method method is that one kind ensures that high-waxy oil well prevents in recovery process
The economic measure of wax deposit being particularly suitable for.
According to type of solvent, the common paraffin remover of oil well is mainly by oil-base paraffin remover, water base paraffin remover and lotion paraffin remover
Three types.Its molten wax speed of oil-base paraffin remover is fast, freezing point is low, and to the adaptable of crude oil, wax removal effect is good, but usually
The finish toxicity used is big, it is inflammable, explosive, easily diluted by crude oil, and with the formulation of 6300 standard of SY/T, partial solvent increases
Heavy prescription is disabled.Water base paraffin remover relative density is larger, is suitable for high-water-cut oil-producing well, and be not easy to catch fire, but wax removal speed
Relatively slow, low temperature flow is poor, and main component surfactant price is high, big using concentration, is not easy to promote.And emulsion-type wax removal
Agent is also immature in the selection of organic solvent and surfactant, causes emulsion intercalation method poor, stablizes time and oil well knot
Wax depth mismatches, and wax removal effect is poor.
CN108359437A discloses a kind of oil well lotion paraffin remover and its preparation method and application, lotion paraffin remover packet
Include the component of following parts by weight: 25-45 parts of diesel oil, 3-6 parts of gemini quaternary ammonium salt, 3-7 parts of fatty alcohol polyoxyethylene ether, dehydration mountain
1.5-2.5 parts of pears alcohol oleate, 2-5 parts of mutual solvent, 1-3 parts of sodium hydroxide, 35-60 parts of water, the paraffin remover provided makes wax deposition table
Face is reversed to water-wetted surface by oil-wetted surface, is conducive to falling off for wax, but is formulated more complex, higher cost, is unfavorable for advising greatly
Mould application.CN105038749A discloses a kind of oil-in-water paraffin remover, is mixed by the raw material of following weight percents:
10-20% benzene, 5-15% toluene, 10-15% petroleum ether, 3-7% surfactant, 2-8% mutual solvent, 1-3% alkaline matter,
The water of 3-10% emulsifier and surplus, stability is poor, is easy demulsification.
A kind of formula is simple, cost is relatively low, the preferable emulsion-type paraffin remover of molten wax effect therefore, it is necessary to developing, to meet
Application requirement.
Summary of the invention
It is an object of the invention to a kind of emulsion-type paraffin remover and its preparation method and application, paraffin removers provided by the invention
Formula is simple, wax removal effect is more excellent and stability is good, can be used for being mass produced.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the paraffin remover includes such as by volumn concentration the present invention provides a kind of emulsion-type paraffin remover
Lower component: oil-based solvent 55-60%, surfactant 0.5-3%, surplus are water.
Wherein, the surfactant is neopelex and/or lauric acid/dodecanoic acid sorbitol ester (Span 20).
Wax removal agent prescription provided by the invention is simple, on the one hand the surfactant selected can make system at room temperature
Formation stable emulsion, stable time are long；On the other hand when paraffin remover is added to stratum, and temperature increases, system can be broken rapidly
Cream enables the molten wax effect of the performance of the bigger efficiency of organic solvent.And the surfactant that the present invention selects can also be in oil pipe
Surface forms water membrane, plays the role of reducing oil well wax deposit amount, extends period of removing the wax.
In the present invention, the volumn concentration of oil-based solvent is 55-60%, such as 56%, 57%, 58%, 59% etc..
Preferably, the oil-based solvent includes paraxylene, meta-xylene, ortho-xylene, gasoline, petroleum ether or hexamethylene
In any one or at least two combination；Further preferred ortho-xylene, meta-xylene, any one in paraxylene
With the combination of gasoline.
Crude oil wax fusing point is high, and has aromatic ring structure, selects one as oil-based solvent of dimethylbenzene in the present invention
Original wax can effectively be dissolved by dividing.And it is swept along there are also part crude oil, vapour other than wax, colloid, asphalitine in wax stone composition
Oil is linear paraffin, easy to dissolve that the crude oil swept along in wax stone is precipitated, therefore, when the present invention selects the group of dimethylbenzene and gasoline
When conjunction, the speed of paraffin dissolution with higher.
Preferably, the oil-based solvent is mixed solvent, the meta-xylene that ortho-xylene and gasoline are formed with volume ratio 3:2
Mixed solvent, paraxylene and the gasoline formed with gasoline with volume ratio 3:2 is with the volume ratio 3:2 mixed solvent formed or to two
Toluene and gasoline with the volume ratio 2:1 in the mixed solvent formed any one, preferably paraxylene and gasoline is with volume ratio
The mixed solvent of 3:2 composition.
When the mixed solvent that the present invention selects paraxylene and gasoline to form with volume ratio 3:2, to the dissolution speed of crude oil wax
Rate highest.
In the present invention, the volumn concentration of surfactant be 0.5-3%, such as 0.8%, 1%, 1.5%,
1.8%, 2%, 2.2%, 2.5%, 2.8% etc..
Preferably, the surfactant is neopelex.
Neopelex and lauric acid/dodecanoic acid sorbitol ester that the present invention selects have the effect of preferable stable emulsion,
But for the considerations of economic cost, it is living as surface that the present invention is preferably added to neopelex in industrial processes
Property agent.
Preferably, the emulsion-type paraffin remover further includes cosurfactant.
Lotion paraffin remover can be improved to the permeability of wax in the addition of cosurfactant, make in lotion surfactant and
Organic solvent preferably contacts with wax and is allowed to dissolve.
Preferably, the cosurfactant is n-butanol and/or ether.
It preferably, is the volumn concentration of the cosurfactant in terms of 100% by the total volume of emulsion-type paraffin remover
For 1-2%, such as 1.1%, 1.2%, 1.4%, 1.6%, 1.8% etc..
Preferably, the paraffin remover is grouped as by volumn concentration by following group: paraxylene and gasoline are with volume ratio
Mixed solvent 60%, the neopelex 3% of 3:2 composition, surplus is water.
Preferably, the paraffin remover is grouped as by volumn concentration by following group: paraxylene and gasoline are with volume ratio
Mixed solvent 55%, the neopelex 3% of 3:2 composition, surplus is water.
Emulsion-type paraffin remover is O/W type emulsion, and in emulsion-type paraffin remover system, oil phase content is higher, wax removal effect
Better, but when water content is very little, lotion cannot be stabilized, when the present invention selects the volume ratio of oil-based solvent as 55-60%, cream
The wax removal effect of liquid type paraffin remover and the comprehensive performance of stability reach best.
Second aspect, the present invention provides the preparation method of the emulsion-type paraffin remover according to first aspect, the system
Preparation Method includes the following steps: for surfactant to be added to the water dissolution, oil-based solvent is then added and mixes, obtains the cream
Liquid type paraffin remover.
Preferably, the dissolution carries out in a stirring kettle.
Preferably, the time of the dissolution is 20-30min, such as 22min, 24min, 26min, 28min etc..
Preferably, the mixed time is 1-1.5h, such as 1.1h, 1.2h, 1.3h, 1.4h etc..
The third aspect, the present invention provides emulsion-type paraffin remover the answering in oil well paraffin removal according to first aspect
With.
Compared with the existing technology, the invention has the following advantages:
(1) wax removal agent prescription provided by the invention is simple, on the one hand the surfactant selected can make at room temperature
System forming stable emulsion, stable time are long；On the other hand when paraffin remover is added to stratum, and temperature increases, system can be fast
Speed demulsification enables the molten wax effect of the performance of the bigger efficiency of organic solvent.And the surfactant that the present invention selects can also be
Oil pipe surface forms water membrane, plays the role of reducing oil well wax deposit amount, extends period of removing the wax；
(2) when the mixed solvent that present invention selection paraxylene and gasoline are formed with volume ratio 3:2, the dissolution to crude oil wax
Rate highest；
(3) emulsion-type paraffin remover provided by the invention is higher to the rate of dissolution of crude oil wax, and lotion is stable at room temperature
Time is longer, wherein the speed of paraffin dissolution is 0.015g/min or more, stablizes the time in 4.0h or more, and at relatively high temperatures again can
To be demulsified rapidly, make the molten wax effect of the performance of the bigger efficiency such as solvent.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
A kind of emulsion-type paraffin remover is grouped as by volumn concentration by following group: oil-based solvent 60%, surfactant
3%, surplus is water.
Wherein, oil-based solvent is the mixed solvent that paraxylene and gasoline are formed with volume ratio 3:2, surfactant ten
Dialkyl benzene sulfonic acids sodium.
The preparation method comprises the following steps:
Surfactant is added to the water stirring and dissolving 20min in a stirring kettle, oil-based solvent is then added and mixes 1h,
Obtain emulsion-type paraffin remover.
Embodiment 2-5
Difference with embodiment 1 is only that in the present embodiment, oil-based solvent is ortho-xylene and gasoline with volume ratio 3:
The mixed solvent (embodiment 3), right that mixed solvent (embodiment 2), meta-xylene and the gasoline of 2 compositions are formed with volume ratio 3:2
Mixed solvent (embodiment 4) that dimethylbenzene and gasoline are formed with volume ratio 2:1, paraxylene, gasoline or petrol ether are with volume ratio
The mixed solvent (embodiment 5) of 3:1:2 composition.
Embodiment 6
Difference with embodiment 1 is only that, in the present embodiment, surfactant is that (volumn concentration is Span 20
0.5%).
Embodiment 7
A kind of emulsion-type paraffin remover is grouped as by volumn concentration by following group: oil-based solvent 55%, surfactant
3%, cosurfactant 2%, surplus are water.
Wherein, oil-based solvent is the mixed solvent that paraxylene and gasoline are formed with volume ratio 3:2, and surfactant is department
Class 20, cosurfactant is n-butanol.
The preparation method comprises the following steps:
Surfactant and cosurfactant are added to the water stirring and dissolving 20min in a stirring kettle, oil is then added
Property solvent simultaneously mixes 1h, obtains emulsion-type paraffin remover.
Comparative example 1-2
Difference with embodiment 1 is only that, in the present embodiment, surfactant is that (volumn concentration is Tween 80
1%, comparative example 1), enuatrol (volumn concentration 1%, comparative example 2).
Performance test 1
The embodiment 1-7 and comparative example 1-2 paraffin remover provided is tested for the property, the method is as follows:
(1) the speed of paraffin dissolution: the testing standard according to SY/T 6300-2009 tests the oil field Bao Lige Ba18Jing；
(2) the emulsion-stabilizing time: being placed under 25 DEG C of constant temperatures, records its stable time；
(3) it is demulsified the time: under 45 DEG C of constant temperatures, recording it and be demulsified the time；
(4) it cost: is calculated with market each component unit price.
Test result is shown in Table 1:
Table 1
| Sample | The speed of paraffin dissolution (g/min) | Stablize time/h | Be demulsified time/h | Cost (yuan/ton) |
| Embodiment 1 | 0.0240 | 4.0 | 0.1 | 4500 |
| Embodiment 2 | 0.0211 | 4.0 | 0.1 | 4500 |
| Embodiment 3 | 0.0218 | 4.0 | 0.1 | 4500 |
| Embodiment 4 | 0.0231 | 4.0 | 0.1 | 6000 |
| Embodiment 5 | 0.0155 | 4.0 | 0.1 | 4000 |
| Embodiment 6 | 0.0240 | 4.2 | 0.1 | 7000 |
| Embodiment 7 | 0.0250 | 4.0 | 0.1 | 6800 |
| Comparative example 1 | 0.0232 | 0.15 | 0.1 | 4600 |
| Comparative example 2 | 0.0235 | 0.15 | 0.1 | 4600 |
By embodiment and test result it is found that emulsion-type paraffin remover provided by the invention to the rate of dissolution of crude oil wax compared with
Height, and the stable time is longer at room temperature for lotion, wherein the speed of paraffin dissolution is 0.015g/min or more, stablize the time 4.0h with
On.By the comparison of embodiment 1 and embodiment 2-5 it is found that when the present invention selects paraxylene and gasoline to form with volume ratio 3:2
It is 0.0240g/min to the rate of dissolution highest of crude oil wax when mixed solvent.It can by the comparison of embodiment 1 and embodiment 6-7
Know, when the present invention selects neopelex, cost is relatively low.By the comparison of embodiment 1 and comparative example 1-2 it is found that choosing
With surfactant provided by the invention, good emulsion stability.
Performance test 2
In order to test emulsion-type paraffin remover provided by the invention in practical applications to the molten wax effect of oil well, chooses and implement
The paraffin remover that example 1 provides is tested, and test result is shown in Table 2:
Table 2
| Pound sign | Wax ball quality/g | Time/min | The speed of paraffin dissolution (g/min) |
| Ba18Jing | 1.102 | 62 | 0.0178 |
| Ba18-94Jing | 1.0536 | 55 | 0.0191 |
| Ba18-14Jing | 1.0937 | 56 | 0.0196 |
| Ba18-30Jing | 1.0872 | 62 | 0.0176 |
| Ba18-44Jing | 1.0825 | 61 | 0.0176 |
| Ba18-84Jing | 1.0973 | 69 | 0.0160 |
| Ba19-10Jing | 1.0905 | 67 | 0.0162 |
| Ba48-21Jing | 1.1059 | 67 | 0.0165 |
By performance test it is found that emulsion-type paraffin remover provided by the invention can meet the paraffin removal requirement of different oil wells, have
There is higher the speed of paraffin dissolution.
The Applicant declares that the present invention is explained by the above embodiments emulsion-type paraffin remover and preparation method thereof of the invention
And application, but the invention is not limited to above-mentioned method detaileds, that is, do not mean that the present invention must rely on above-mentioned method detailed
It can implement.It should be clear to those skilled in the art, any improvement in the present invention, to each raw material of product of the present invention
Addition, selection of concrete mode of equivalence replacement and auxiliary element etc., all fall within protection scope of the present invention and the open scope it
It is interior.
Claims (10)
1. a kind of emulsion-type paraffin remover, which is characterized in that the paraffin remover includes following component by volumn concentration: oiliness is molten
Agent 55-60%, surfactant 0.5-3%, surplus are water；
Wherein, the surfactant is neopelex and/or lauric acid/dodecanoic acid sorbitol ester.
2. emulsion-type paraffin remover according to claim 1, which is characterized in that the oil-based solvent include paraxylene,
In dimethylbenzene, ortho-xylene, gasoline, petroleum ether or hexamethylene any one or at least two combination；It is further preferably adjacent
The combination of dimethylbenzene, meta-xylene, any one and gasoline in paraxylene.
3. emulsion-type paraffin remover according to claim 2, which is characterized in that the oil-based solvent is ortho-xylene and gasoline
Mixed solvent that mixed solvent, meta-xylene and the gasoline formed with volume ratio 3:2 is formed with volume ratio 3:2, paraxylene with
Gasoline appointing with the volume ratio 2:1 in the mixed solvent formed with the volume ratio 3:2 mixed solvent formed or paraxylene and gasoline
It anticipates one kind, preferably the mixed solvent that is formed with volume ratio 3:2 of paraxylene and gasoline.
4. emulsion-type paraffin remover described in any one of -3 according to claim 1, which is characterized in that the surfactant is
Neopelex.
5. emulsion-type paraffin remover described in any one of -4 according to claim 1, which is characterized in that the emulsion-type paraffin remover
It further include cosurfactant；
Preferably, the cosurfactant is n-butanol and/or ether；
It preferably, is in terms of 100% by the total volume of emulsion-type paraffin remover, the volumn concentration of the cosurfactant is 1-
2%.
6. emulsion-type paraffin remover described in any one of -5 according to claim 1, which is characterized in that the paraffin remover presses volume
Percentage composition is grouped as by following group: mixed solvent 60%, the detergent alkylate that paraxylene and gasoline are formed with volume ratio 3:2
Sodium sulfonate 3%, surplus are water.
7. emulsion-type paraffin remover described in any one of -5 according to claim 1, which is characterized in that the paraffin remover presses volume
Percentage composition is grouped as by following group: mixed solvent 55%, the detergent alkylate that paraxylene and gasoline are formed with volume ratio 3:2
Sodium sulfonate 3%, surplus are water.
8. the preparation method of emulsion-type paraffin remover described in any one of -7 according to claim 1, which is characterized in that the system
Preparation Method includes the following steps: for surfactant to be added to the water dissolution, oil-based solvent is then added and mixes, obtains the cream
Liquid type paraffin remover.
9. preparation method according to claim 8, which is characterized in that the dissolution carries out in a stirring kettle；
Preferably, the time of the dissolution is 20-30min；
Preferably, the mixed time is 1-1.5h.
10. application of the emulsion-type paraffin remover in oil well paraffin removal described in any one of -7 according to claim 1.
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