CN109897623A - A kind of super drag reducer and preparation method thereof - Google Patents
A kind of super drag reducer and preparation method thereof Download PDFInfo
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- CN109897623A CN109897623A CN201910064212.9A CN201910064212A CN109897623A CN 109897623 A CN109897623 A CN 109897623A CN 201910064212 A CN201910064212 A CN 201910064212A CN 109897623 A CN109897623 A CN 109897623A
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Abstract
The invention discloses a kind of super drag reducers, including 25~75wt% nanosphere, 25~75wt% water-soluble polymer and 1~3wt% surfactant.Super drag reducer of the invention forms mutually indepedent, stable molecular cluster, to achieve the effect that drag reduction, drag reducing efficiency can reach 85% or more to drag reducer by preparation nanosphere, water-soluble polymer and surfactant.
Description
Technical field
The present invention relates to shale gas exploitation fracturing yield increasing fields, and in particular to be super drag reducer and preparation method thereof.
Background technique
Shale gas resource is very rich, however since the permeability of shale matrix is very low (generally less than 1mD), development technique
Difficult, 90% or more shale gas well needs that more satisfactory yield could be obtained by fracturing reform.
Shale gas fracture stimulation operations carry out fracture stimulation operations frequently with drag reduction water, and it is to be added in water that drag reduction hydraulic pressure, which is split,
The additives such as a small amount of pressure break drag reducer, cleanup additive, fungicide are as the pressure break fracturing work carried out.Not with gelatinous fracturing fluid
Together, drag reduction hydraulic pressure, which is split, can be substantially reduced pressure break cost, reduce formation damage, and can obtain the irrealizable body of gel fracture
It overstocks and splits, to improve the exploitation yield of shale gas.Drag reducer is mostly based on water-soluble polymer in country's pressure break at present, form
There are dry powder and two kinds of lotion, dry powder is the problem is that first dissolution is configured to certain density liquid, lotion using the examination of preceding needs
Type drag reducer reduces the process for dissolving preparation in advance, and On-line construction operation may be implemented.But either emulsion-type drag reducer is also
It is dry-type drag reducer its molecular structure is all linear water-soluble polymers, molecule is easy chain rupture resistance reducing performance under high speed shear
It reduces, the drag reducing efficiency that drag reducer currently on the market reaches is no more than 70%.
Summary of the invention
In view of the above shortcomings, the purpose of the present invention is to provide a kind of super drag reducer and preparation method thereof, tools
Have the advantages that drag reducing efficiency is high.
When in turbulent flow, frictional resistance can increase liquid in work progress, under high flow rate, liquid internal shearing force is increased, torque
Increase, when liquid advances, needs to shear more molecular separating force, when flow velocity is big, the uniform micro-volume of liquid internal (see by micro-volume
Make a group molecular cluster, in working fluid, be considered as an inseparable entirety) it is broken, and reconfigure.
In pure water, entire liquid is interspersed together by numerous identical micro-volume combination, and any flowing can mean that
Entire movement is equivalent to entire cloth and is moving in flowing, and friction only is from the resistance in liquid-solid contact face；In turbulent flow, due to
Internal current difference is very big, needs many energy, and of different sizes, independent, stable molecular cluster is formed in drag reducer, is drag reducer
Key.
The preparation method of super drag reducer provided by the invention introduces three micro-volume, that is, molecules that is, in super drag reducer
Cluster, a kind of mixture of the water-soluble polymer of appropriate molecular weight, nanosphere and surfactant, Lai Tigao drag reducer subtract
Resistance rate.
It is introduced in water each separated chemical substance of water cluster, that is, introduces and form each stable, independent point
Submanifold is not wound between each other since molecular cluster is stable and independent, similar to pure water in low flow velocity, but under high velocity stream,
It since molecular cluster has existed, alreadyes switch off " cloth cover " of pure water, each molecular cluster is again relatively stable, forms the only of each advance
Vertical " sphere " does not need " cloth cover " that tears up raw material, so frictional resistance also just lowers when liquid advances.
Technical solution of the present invention is summarized as follows:
A kind of super drag reducer, wherein including 25~75wt% nanosphere, 25~75wt% water-soluble polymer and 1
~3wt% surfactant.
Preferably, the super drag reducer, wherein the nanosphere includes the acrylamide list of 15~25wt%
Body, the function monomer of 5~15wt%, the sorbester p17 of 5~15wt%, the potassium peroxydisulfate of 0.1~0.5wt%, 0.1~0.5wt%
Crosslinking agent, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, the OP-10 of 1~5wt%, 20~
The deionized water of 37wt%.
Preferably, the super drag reducer, wherein the nanosphere includes the acrylamide list of 15~25wt%
Body, the function monomer of 5~15wt%, the sorbester p17 of 5~15wt%, the potassium peroxydisulfate of 0.1~0.5wt%, 0.1~0.5wt%
Chain-transferring agent, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, the OP-10 of 1~5wt%, 20~
The deionized water of 37wt%.
Preferably, the super drag reducer, wherein the surfactant be selected from one of OP-10, OP-5 or
A combination thereof.
Preferably, the super drag reducer, wherein the crosslinking agent be selected from N, N methylene acrylamide, 1,6 oneself
One of omega-diol diacrylate, ethylene glycol dimethacrylate or combinations thereof.
Preferably, the super drag reducer, wherein the chain-transferring agent is selected from one kind of sodium formate, dehydrated alcohol
Or combinations thereof.
Preferably, the super drag reducer, wherein the function monomer is selected from sodium acrylate, 2- acrylamide -2-
One of methyl propane sulfonic acid sodium, n-vinyl pyrrolidone, sodium styrene sulfonate, maleimide or combinations thereof.
A kind of preparation method of super drag reducer, wherein the following steps are included:
A) preparation of the nanosphere
(1) sorbester p17 and mineral oil are added in the first reaction kettle, are uniformly mixed to form the first solution；
(2) in deionized water by acrylamide monomer, function monomer dissolution, crosslinking agent, over cure is added after dissolving completely
Sour potassium, stirring and dissolving obtain the second solution completely,；
(3) the second solution is added in the first solution, is emulsified with certain speed, controlled at 40 DEG C ± 3 DEG C,
Under nitrogen protection, be slowly added to sodium hydrogensulfite, and be warming up to 65 ± 3 DEG C, react 4.5~5h, be cooled to room temperature, then plus
Enter OP-10 to get nanoscale microballoon is arrived；
B) preparation of the water-soluble polymer
(I) sorbester p17 and mineral oil are added in the second reaction kettle, are uniformly mixed to form third solution；
(II) in deionized water by acrylamide monomer, function monomer dissolution, chain-transferring agent, mistake is added after dissolving completely
Potassium sulfate, stirring and dissolving obtain the 4th solution completely；
(III) the 4th solution is added in third solution, is emulsified with certain speed, controlled at 40 DEG C ± 3
DEG C, under nitrogen protection, it is slowly added to sodium hydrogensulfite, and be warming up to 65 ± 3 DEG C, reacts 4.5~5h, be cooled to room temperature, so
OP-10 is added afterwards to get water-soluble polymer is arrived；
C) preparation of the super drag reducer
By water-soluble polymer and surfactant obtained in nanosphere obtained in step a), step b) by described
Ratio is uniformly mixed, and obtains the super drag reducer.
Preferably, the preparation method of the super drag reducer, wherein the emulsifying rate of step (3) and (III) is
1500~2500r/min.
The beneficial effects of the present invention are:
Super drag reducer of the invention is formed mutual by preparation nanosphere, water-soluble polymer and surfactant
Independent, stable molecular cluster, to achieve the effect that drag reduction, drag reducing efficiency can reach 85% or more to drag reducer.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
The invention discloses a kind of super drag reducers, including 25~75wt% nanosphere, 25~75wt% water-soluble poly
Close object and 1~3wt% surfactant.
As the another embodiment of this case, wherein nanosphere include the acrylamide monomer of 15~25wt%, 5~
The function monomer of 15wt%, the sorbester p17 of 5~15wt%, 0.1~0.5wt% potassium peroxydisulfate, 0.1~0.5wt% crosslinking
Agent, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, the OP-10 of 1~5wt%, 20~37wt% are gone
Ionized water.
As the another embodiment of this case, wherein nanosphere include the acrylamide monomer of 15~25wt%, 5~
The function monomer of 15wt%, the sorbester p17 of 5~15wt%, the potassium peroxydisulfate of 0.1~0.5wt%, 0.1~0.5wt% chain turn
Move agent, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, the OP-10 of 1~5wt%, 20~37wt%
Deionized water.
By the way that sorbester p17 is added the specific surface area for stablizing monomer droplet is increased, water phase can be dispersed into more smaller
Drop, since the stabilization of dispersing agent hinders the bonding between droplet, thus system tends towards stability, and finally obtains more granule
The nanosphere and emulsion polymer of diameter, smaller partial size are more conducive to its rapid dispersion and swelling in water.In speed of agitator
1500~2500r/min, one timing of dosage of other each components, when sorbester p17 mass fraction is lower than 5%, reaction system is stablized
Property it is poor, easily there is phenomena such as agglomeration, sudden and violent poly-, when sorbester p17 mass fraction is greater than 10%, system stability is good, do not agglomerate,
The appearance of phenomena such as sudden and violent poly-, the particle diameter distribution of obtained nanosphere and emulsion polymer is relatively uniform, and properties of product are more stable,
Increase with surfactant sorbester p17 dosage, the partial size of nanosphere and emulsion polymer becomes smaller.
As the another embodiment of this case, wherein surfactant is selected from one of OP-10, OP-5 or combinations thereof.
As the another embodiment of this case, wherein crosslinking agent is selected from N, N methylene acrylamide, 1,6 hexanediyls
One of ester, ethylene glycol dimethacrylate or combinations thereof.
As the another embodiment of this case, wherein chain-transferring agent is selected from sodium formate, one kind of dehydrated alcohol or combinations thereof.Chain
Transfer agent is preferably 0.1-0.50wt%, more preferable 0.1-0.15wt%.In fixed speed of agitator 400r/min, other each groups
The dosage divided is certain, and the mass fraction by changing chain-transferring agent obtains the average mark of emulsion polymer from 0.1-0.50wt%
Son measures the increase with chain-transferring agent dosage, and molecular weight is substantially reduced.The possible reason is increase the dosage of chain-transferring agent, it is single
The number that decomposition of initiator forms free radical in the time of position increases, it is assumed that the growth rate of single polymer chain is identical, therefore generates
The molecular weight of polymer reduces, and for resistance reducing performance, molecular weight is bigger, and drag reduction efficiency is higher, therefore relatively high in order to obtain
Molecular weight emulsion polymer, preferred chain tra nsfer dosage be 0.10~0.15wt%.
As the another embodiment of this case, wherein function monomer is selected from sodium acrylate, 2- acrylamide-2-methyl propane sulfonic
One of sodium, n-vinyl pyrrolidone, sodium styrene sulfonate, maleimide or combinations thereof.
A kind of preparation method of super drag reducer, wherein the following steps are included:
A) preparation of the nanosphere
(1) sorbester p17 and mineral oil are added in the first reaction kettle, are uniformly mixed to form the first solution；
(2) in deionized water by acrylamide monomer, function monomer dissolution, crosslinking agent, over cure is added after dissolving completely
Sour potassium, stirring and dissolving obtain the second solution completely,；
(3) by the second solution be added the first solution in, emulsified with the speed of 400r/min, controlled at 40 DEG C ±
3 DEG C, under nitrogen protection, it is slowly added to sodium hydrogensulfite, and be warming up to 65 ± 3 DEG C, reacts 4.5~5h, be cooled to room temperature, so
OP-10 is added afterwards to get nanoscale microballoon is arrived；
B) preparation of the water-soluble polymer
(I) sorbester p17 and mineral oil are added in the second reaction kettle, are uniformly mixed to form third solution；
(II) in deionized water by acrylamide monomer, function monomer dissolution, chain-transferring agent, mistake is added after dissolving completely
Potassium sulfate, stirring and dissolving obtain the 4th solution completely；
(III) the 4th solution is added in third solution, is emulsified with the speed of 400r/min, controlled at 40 DEG C
± 3 DEG C, under nitrogen protection, it is slowly added to sodium hydrogensulfite, and be warming up to 65 ± 3 DEG C, reacts 4.5~5h, be cooled to room temperature,
Then OP-10 is added to get water-soluble polymer is arrived；
C) preparation of the super drag reducer
By water-soluble polymer and surfactant obtained in nanosphere obtained in step a), step b) by described
Ratio is uniformly mixed, and obtains the super drag reducer.
As the another embodiment of this case, wherein step (1) and the mixing speed of (I) are 1500~2500r/min.It is preferred that
2000-2500r/min, with the raising of speed of agitator, becoming of being obviously reduced is presented in the partial size of nanosphere in a certain range
Gesture, this is because shear action enhancing, monomer droplet is further dispersed into smaller drop with the raising of speed of agitator,
According to the mechanism of suspension polymerisation, the size of drop determines final partial size, thus average grain diameter reduces.When speed of agitator is more than
After 2500r/min, increases speed of agitator in a certain range and be difficult to that monomer droplet is obviously reduced further, because average grain diameter subtracts
Small, nanosphere more tends towards stability.In addition, the probability mutually assembled between droplet increases, performance when speed of agitator is lower
Uneven for the particle diameter distribution of nanosphere, stability is deteriorated.
Specific embodiment and comparative example is listed below
Embodiment 1:
Nanosphere preparation: (1) each raw material is by weight weighed, wherein raw material proportioning are as follows: acrylamide monomer 15wt%,
Sodium acrylate 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, N, N methylene acrylamide 0.5wt%, white oil
20wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(2) at room temperature, oil is mutually equipped with
Thermometer, mulser, condensation reflux unit reaction kettle in sorbester p17 and white oil is added, be uniformly mixed that form first molten
Liquid；(3) acrylamide monomer, sodium acrylate are dissolved in deionized water in another aqueous phase dissolved tank, has been dissolved to it
N is added after complete, N methylene acrylamide, potassium peroxydisulfate are stirred to N, and N methylene acrylamide and potassium peroxydisulfate are completely dissolved
Obtain the second solution；(4) dissolved second solution is added in the first solution, opens the speed of mulser 1500r/min
It is emulsified, opens insulation jacket recirculated water, temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, is slowly added to total weight
The sodium hydrogensulfite of 0.5wt% is as reproducibility initiator；So that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5h, stopping
Heating, is cooled to room temperature with 15 ± 3 DEG C of cold water, the Surfactant OP -10 of 3wt% is added into reaction solution to get having arrived not
It is dissolved in the nanoscale microballoon lotion of water.
The synthesis of water-soluble polymer: (I) weighs each raw material by weight, wherein raw material proportioning are as follows: acrylamide monomer
15wt%, sodium acrylate 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, sodium formate 0.1wt%, white oil
20wt%, sodium hydrogensulfite 0.5wt%；Deionized water 36.25wt%, OP-10 3wt%；(II) at room temperature, oil is mutually equipped
Have and sorbester p17 and white oil are added in the reaction kettle of thermometer, mulser, condensation reflux unit, is uniformly mixed that form third molten
Liquid；(III) acrylamide monomer, sodium acrylate are dissolved in deionized water in another aqueous phase dissolved tank, has been dissolved to it
Chain-transferring agent, potassium peroxydisulfate are added after complete, stirring is completely dissolved to obtain the 4th solution to sodium formate and potassium peroxydisulfate；It (IV) will be molten
The 4th solution after solution is added in third solution, opens mulser and is emulsified with the speed of 1600r/min, opens insulation jacket
Recirculated water, temperature are controlled at 40 DEG C ± 3 DEG C, and under nitrogen protection, the sodium hydrogensulfite for being slowly added to the 0.5wt% of total weight is made
For reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5h stops heating, cold with 15 ± 3 DEG C of cold water
But to room temperature；The Surfactant OP -10 of 3wt% is added into reaction solution to get water-soluble polymer lotion has been arrived；
The synthesis of super drag reducer: weighing each raw material by weight, wherein matching are as follows: nanosphere lotion 49wt%, water
Soluble polymer lotion 49wt%, -10 2wt% of Surfactant OP；At room temperature be stirred in dissolving tank 20 minutes,
Obtain super drag reducer CT551.
Embodiment 2:
Nanosphere preparation: (1) each raw material is by weight weighed, wherein raw material proportioning are as follows: acrylamide monomer 15wt%,
2- acrylamide-2-methyl propane sulfonic sodium 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, 1,6 hexylene glycol dipropyl
Olefin(e) acid ester 0.5wt%, white oil 20wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(2)
At room temperature, oil, which is mutually equipped in the reaction kettle of thermometer, mulser, condensation reflux unit, is added sorbester p17 and white oil, stirring
It is uniformly mixed and forms the first solution；(3) by acrylamide monomer, 2- acrylamide -2- methyl in another aqueous phase dissolved tank
Propanesulfonate dissolves in deionized water, and 1,6 hexanediyl esters, potassium peroxydisulfate are added after its dissolution completely, stir
It is completely dissolved to obtain the second solution to 1,6 hexanediyl ester and potassium peroxydisulfate；(4) the first solution is added in the second solution
In, it opens mulser and is emulsified with the speed of 1800r/min, open insulation jacket recirculated water, temperature is controlled at 40 DEG C ± 3
DEG C, under nitrogen protection, the sodium hydrogensulfite of the 0.5wt% of total weight is slowly added to as reproducibility initiator, so that temperature
65 ± 3 DEG C are slowly increased to, the reaction was continued 4.8h stops heating, is cooled to room temperature with 15 ± 3 DEG C of cold water；It is added into reaction solution
The Surfactant OP -10 of 3wt% is to get having arrived nanoscale microballoon not soluble in water；
Water-soluble polymer preparation: (I) weighs each raw material by weight, wherein raw material proportioning are as follows: acrylamide monomer
15wt%, 2- acrylamide-2-methyl propane sulfonic sodium 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, anhydrous second
Alcohol 0.5wt%, white oil 20wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(II) in room
Under temperature, oil, which is mutually equipped in the reaction kettle of thermometer, mulser, condensation reflux unit, is added sorbester p17 and white oil, is stirred
It is formed uniformly third solution；(III) by acrylamide monomer, 2- acrylamide -2- methyl-prop sulphur in another aqueous phase dissolved tank
In deionized water, dehydrated alcohol, potassium peroxydisulfate, stirring to dehydrated alcohol and over cure is added in sour sodium dissolution after its dissolution completely
Sour potassium is completely dissolved, and obtains the 4th solution；(IV) the 4th solution is added in third solution, opens mulser 2000r/min
Speed emulsified, open insulation jacket recirculated water, temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, is slowly added to total
The sodium hydrogensulfite of the 0.5wt% of weight is as reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 5h,
Stop heating, be cooled to room temperature with 15 ± 3 DEG C of cold water, the Surfactant OP -10 of 3wt% is added into reaction solution to get arriving
Water-soluble polymer lotion；
The preparation of super drag reducer: each raw material is weighed by weight, wherein matching are as follows: nanosphere lotion 49wt%, it is water-soluble
Property polymer emulsion 49wt%, -10 2wt% of Surfactant OP, at room temperature be stirred in dissolving tank 20 minutes, obtain
To super drag reducer CT552.
Embodiment 3:
Nanosphere preparation: (1) each raw material is by weight weighed, wherein raw material proportioning are as follows: acrylamide monomer 15wt%,
N-vinyl pyrrolidone 15wt%, sorbester p17 15wt%, potassium peroxydisulfate 0.15wt%, ethylene glycol dimethacrylate
0.5wt%, white oil 15wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(2) in room temperature
Under, oil, which is mutually equipped in the reaction kettle of thermometer, mulser, condensation reflux unit, is added sorbester p17 and white oil, is stirred
The first solution of even formation；(3) acrylamide monomer, n-vinyl pyrrolidone are dissolved in another aqueous phase dissolved tank
In ionized water, ethylene glycol dimethacrylate, potassium peroxydisulfate, stirring to crosslinking agent and persulfuric acid are added after its dissolution completely
Potassium is completely dissolved, and obtains the second solution；(4) dissolved 4th solution is added in third solution, opens mulser and uses
The speed of 2000r/min is emulsified, and insulation jacket recirculated water is opened, and temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection,
The sodium hydrogensulfite of the 0.5wt% of total weight is slowly added to as reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C,
The reaction was continued 5h stops heating, is cooled to room temperature with 15 ± 3 DEG C of cold water, and the surfactant of 3wt% is added into reaction solution
OP-10 is to get having arrived nanoscale microballoon not soluble in water；
The synthesis of water-soluble polymer: (I) weighs each raw material by weight, wherein raw material proportioning are as follows: acrylamide monomer
15wt%, n-vinyl pyrrolidone 15wt%, sorbester p17 15wt%, potassium peroxydisulfate 0.15wt%, sodium formate 0.1wt% are white
Oily 15wt%, sodium hydrogensulfite 0.5wt%, deionized water 36.25wt%, OP-10 3wt%；(II) at room temperature, oil mutually fills
It has and sorbester p17 and white oil is added in the reaction kettle of thermometer, mulser, condensation reflux unit, be uniformly mixed to form third
Solution；(III) acrylamide monomer, n-vinyl pyrrolidone are dissolved in deionized water in another aqueous phase dissolved tank,
Sodium formate, potassium peroxydisulfate are added after its dissolution completely, stirring to chain-transferring agent and potassium peroxydisulfate is completely dissolved to obtain the 4th molten
Liquid；(IV) dissolved 4th solution is added in third solution, opens mulser and emulsified with the speed of 400r/min, is opened
Insulation jacket recirculated water is opened, temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, is slowly added to the Asia of the 0.5wt% of total weight
Sodium bisulfate is as reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5-5h, stopping heating, with 15
± 3 DEG C of cold water are cooled to room temperature, and the Surfactant OP -10 of 3wt% are added into reaction solution to get water-soluble polymer has been arrived
Lotion；
The synthesis of super drag reducer: weighing each raw material by weight, wherein matching are as follows: nanosphere lotion 49wt%, water
Soluble polymer lotion 49wt%, -10 2wt% of Surfactant OP；At room temperature be stirred in dissolving tank 20 minutes,
Obtain super drag reducer CT553.
Embodiment 4:
Nanosphere synthesis: (1) each raw material is by weight weighed, wherein raw material proportioning are as follows: acrylamide monomer 15wt%,
Sodium styrene sulfonate 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, N, N methylene acrylamide 0.5wt% are white
Oily 20wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(2) at room temperature, oil is mutually equipped
Have and sorbester p17 and white oil are added in the reaction kettle of thermometer, mulser, condensation reflux unit, is uniformly mixed that form first molten
Liquid；(3) acrylamide monomer, sodium styrene sulfonate are dissolved in deionized water in another aqueous phase dissolved tank, it is molten to its
Solution is completely rear to be added N, and N methylene acrylamide, potassium peroxydisulfate stir to crosslinking agent and potassium peroxydisulfate and be completely dissolved to obtain second
Solution；(4) dissolved second solution is added in the first solution；Mulser is opened to be emulsified with the speed of 400r/min,
Insulation jacket recirculated water is opened, temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, is slowly added to the 0.5wt%'s of total weight
Sodium hydrogensulfite is as reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5-5h, stopping heating, use
15 ± 3 DEG C of cold water are cooled to room temperature, and the Surfactant OP -10 that 3wt% is added into reaction solution is not soluble in water to get having arrived
Nanoscale microballoon lotion；
The synthesis of water-soluble polymer: (I) weighs each raw material by weight, wherein raw material proportioning are as follows: acrylamide monomer
15wt%, sodium styrene sulfonate 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, dehydrated alcohol 0.1wt%, white oil
20wt%, sodium hydrogensulfite 0.5wt%, deionized water 36.25wt%, OP-10 3wt%；(II) at room temperature, oil is mutually equipped
Have and sorbester p17 and white oil are added in the reaction kettle of thermometer, mulser, condensation reflux unit, is uniformly mixed that form third molten
Liquid；(III) acrylamide monomer, sodium styrene sulfonate are dissolved in deionized water in another aqueous phase dissolved tank, it is molten to its
Solution is completely rear to be added dehydrated alcohol, potassium peroxydisulfate, and stirring is completely dissolved to obtain the 4th solution to dehydrated alcohol and potassium peroxydisulfate；
(IV) dissolved 4th liquid is added in third solution, opens mulser and emulsified with the speed of 2500r/min, opens and protect
Warm collet recirculated water, temperature are controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, are slowly added to the sulfurous acid of the 0.5wt% of total weight
Hydrogen sodium is as reproducibility initiator, so that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 5h stops heating, cold with 15 ± 3 DEG C
It is water-cooled to room temperature, the Surfactant OP -10 of 3wt% is added into reaction solution to get water-soluble polymer has been arrived；
The synthesis of super drag reducer: weighing each raw material by weight, wherein matching are as follows: nanosphere lotion 30wt%, water
Soluble polymer lotion 68wt%, -10 2wt% of Surfactant OP；At room temperature be stirred in dissolving tank 20 minutes,
Obtain super drag reducer CT554.
Embodiment 5
Nanosphere synthesis: (1) each raw material is by weight weighed, wherein raw material proportioning are as follows: acrylamide monomer 15wt%,
Maleimide 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, 1,6 hexanediyl ester 0.5wt% are white
Oily 20wt%, sodium hydrogensulfite 0.5wt%, deionized water 35.85wt%, OP-10 3wt%；(2) at room temperature, oil is mutually equipped
Have and sorbester p17 and white oil are added in the reaction kettle of thermometer, mulser, condensation reflux unit, is uniformly mixed that form first molten
Liquid；(3) acrylamide monomer, maleimide are dissolved in deionized water in another aqueous phase dissolved tank, to its dissolution
1,6 hexanediyl esters, potassium peroxydisulfate are added after completely, stirring to crosslinking agent and potassium peroxydisulfate is completely dissolved to obtain second
Solution；(4) dissolved second solution is added in the first solution；Mulser is opened to be emulsified with the speed of 2500r/min,
Insulation jacket recirculated water is opened, temperature is controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, is slowly added to the 0.5wt%'s of total weight
Sodium hydrogensulfite is as reproducibility initiator；So that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5-5h, stopping heating, use
15 ± 3 DEG C of cold water are cooled to room temperature；The Surfactant OP -10 that 3wt% is added into reaction solution is not soluble in water to get having arrived
Nanoscale microballoon lotion；
The synthesis of water-soluble polymer: (I) weighs each raw material by weight, wherein raw material proportioning are as follows: acrylamide monomer
15wt%, maleimide 15wt%, sorbester p17 10wt%, potassium peroxydisulfate 0.15wt%, dehydrated alcohol 0.1wt%, white oil
20wt%, sodium hydrogensulfite 0.5wt%, deionized water 36.25wt%, OP-10 3wt%；(II) at room temperature, oil is mutually equipped
Have and sorbester p17 and white oil are added in the reaction kettle of thermometer, mulser, condensation reflux unit, is uniformly mixed that form third molten
Liquid；(III) acrylamide monomer, maleimide are dissolved in deionized water in another aqueous phase dissolved tank, to its dissolution
Dehydrated alcohol, potassium peroxydisulfate are added after completely, stirring is completely dissolved to obtain the 4th solution to dehydrated alcohol and potassium peroxydisulfate；(Ⅳ)
4th solution is added in third solution, mulser is opened and is emulsified with the speed of 2500r/min, opens insulation jacket circulation
Water, temperature are controlled at 40 DEG C ± 3 DEG C, under nitrogen protection, are slowly added to the sodium hydrogensulfite of the 0.5wt% of total weight as also
Originality initiator；So that temperature is slowly increased to 65 ± 3 DEG C, the reaction was continued 4.5-5h, stopping heating, with 15 ± 3 DEG C of cold water coolings
To room temperature, the Surfactant OP -10 of 3wt% is added into reaction solution to get water-soluble polymer lotion has been arrived；
The synthesis of super drag reducer: weighing each raw material by weight, wherein matching are as follows: nanosphere lotion 68wt%, water
Soluble polymer lotion 30wt%, -10 2wt% of Surfactant OP；At room temperature be stirred in dissolving tank 20 minutes,
Obtain super drag reducer CT555.
The super drag reducer and market conventional emulsions drag reducer, natural plant gum drag reducer, dry powder drag reducer of Example 1~5
The test for carrying out resistance-reducing performance, rheological property respectively carries out drop resistance test to drag reducer using flowing loop friction drag test macro,
It is compared with clear water, certain density drag reducer is added into clear water, the pipeline of 6mm is selected to be tested, record fluid passes through
Frictional resistance pressure drop after pipeline calculates drag reducing efficiency, evaluates the effect of drag reducer according to the size of drag reducing efficiency.
Test result is shown in Table 1
Compared with prior art, its drag reduction efficiency of super drag reducer of the invention is superior, and performance is superior to common homopolymer
Lotion drag reducer, dry-type drag reducer and modifyed guar gum.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (9)
1. a kind of super drag reducer, which is characterized in that including 25~75wt% nanosphere, 25~75wt% water-soluble polymer
With 1~3wt% surfactant.
2. super drag reducer according to claim 1, which is characterized in that the nanosphere includes the third of 15~25wt%
Acrylamide monomer, the function monomer of 5~15wt%, the sorbester p17 of 5~15wt%, the potassium peroxydisulfate of 0.1~0.5wt%, 0.1~
The crosslinking agent of 0.5wt%, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, 1~5wt% OP-10,
The deionized water of 20~37wt%.
3. super drag reducer according to claim 1, which is characterized in that the water-soluble polymer includes 15~25wt%
Acrylamide monomer, the function monomer of 5~15wt%, the sorbester p17 of 5~15wt%, 0.1~0.5wt% potassium peroxydisulfate,
The chain-transferring agent of 0.1~0.5wt%, the mineral oil of 15~35wt%, the sodium hydrogensulfite of 0.1~0.5wt%, 1~5wt%
The deionized water of OP-10,20~37wt%.
4. super drag reducer according to claim 1, which is characterized in that the surfactant is in OP-10, OP-5
One kind or combinations thereof.
5. super drag reducer according to claim 2, which is characterized in that the crosslinking agent is selected from N, N methylene acryloyl
Amine, 1, one of 6 hexanediyl esters, ethylene glycol dimethacrylate or combinations thereof.
6. super drag reducer according to claim 3, which is characterized in that the chain-transferring agent is selected from sodium formate, anhydrous second
One kind of alcohol or combinations thereof.
7. super drag reducer according to claim 2 or 3, which is characterized in that the function monomer is selected from sodium acrylate, 2-
One of acrylamide-2-methyl propane sulfonic sodium, n-vinyl pyrrolidone, sodium styrene sulfonate, maleimide or its
Combination.
8. the preparation method of super drag reducer described in one of claim 1~7, which comprises the following steps:
A) preparation of the nanosphere
(1) sorbester p17 and mineral oil are added in the first reaction kettle, are uniformly mixed to form the first solution；
(2) in deionized water by acrylamide monomer, function monomer dissolution, crosslinking agent, potassium peroxydisulfate is added after dissolving completely,
Stirring and dissolving obtains the second solution completely；
(3) the second solution is added in the first solution, is emulsified with certain speed, controlled at 40 DEG C ± 3 DEG C, in nitrogen
Under gas shielded, it is slowly added to sodium hydrogensulfite, and is warming up to 65 ± 3 DEG C, 4.5~5h is reacted, is cooled to room temperature, is then added
OP-10 to get arrive nanoscale microballoon；
B) preparation of the water-soluble polymer
(I) sorbester p17 and mineral oil are added in the second reaction kettle, are uniformly mixed to form third solution；
(II) in deionized water by acrylamide monomer, function monomer dissolution, chain-transferring agent, persulfuric acid is added after dissolving completely
Potassium, stirring and dissolving obtain the 4th solution completely；
(III) the 4th solution is added in third solution, is emulsified with certain speed, controlled at 40 DEG C ± 3 DEG C,
Under nitrogen protection, it is slowly added to sodium hydrogensulfite, and is warming up to 65 ± 3 DEG C, 4.5~5h is reacted, is cooled to room temperature, is then added
OP-10 to get arrive water-soluble polymer；
C) preparation of the super drag reducer
By water-soluble polymer and surfactant obtained in nanosphere obtained in step a), step b) in the ratio
It is uniformly mixed, obtains the super drag reducer.
9. the preparation method of super drag reducer according to claim 8, which is characterized in that the emulsification of step (3) and (III)
Speed is 1500~2500r/min.
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