CN104560001A - Composition for fracturing fluid resistance reducing agent - Google Patents
Composition for fracturing fluid resistance reducing agent Download PDFInfo
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- CN104560001A CN104560001A CN201310512557.9A CN201310512557A CN104560001A CN 104560001 A CN104560001 A CN 104560001A CN 201310512557 A CN201310512557 A CN 201310512557A CN 104560001 A CN104560001 A CN 104560001A
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- 0 CC1(*)C=C(C=CC=C2)C2=CC=C1 Chemical compound CC1(*)C=C(C=CC=C2)C2=CC=C1 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
Abstract
The invention relates to a composition for a water-based fracturing fluid resistance reducing agent and an application of the composition serving as a fracturing fluid resistance reducing agent. The composition is mainly used for solving the problem of a narrow application temperature range of a resistance reducing agent in the prior art. The following technical scheme is adopted in the invention to well solve the technical problem: the water-based fracturing fluid resistance reducing agent comprises the cationic surface active agent and the aromatic acid salt as shown in formula (I); the aromatic acid salt is selected from at least one of the aromatic acid salt as shown in formula (II) or formula (III); the weight ratio of the cationic surface active agent to the aromatic acid salt is 1:1 to 1:50, and the composition can be used in a shale gas fracturing mining process. The formulas are described in the specification.
Description
Technical field
The present invention relates to for the application as friction-reducing agent of fracturing fluid of the composition of aqueous fracturing fluid flow improver and described composition.
Background technology
Shale gas reservoir generally belongs to super low-porosity and low-permeability reservoir, and the rate of permeation of permeability ratio Clastic Rock Gas Reservoirs also will a low 2-3 order of magnitude, and for this type of gas reservoir, fracturing reform is the important means of exploratory development.The fracturing technique being applicable to exploit hypotonic, low hole unconventional reservoir obtains increasing application in shale gas reservoir exploitation.But inject water and be subject to pipeline and RKB and flow the obstruction of shear-stress, fluid displacement can reduce greatly.The frictional resistance of effective reduction liquid can reduce the demand to equipment, reduces construction cost to a certain extent.Therefore, in order to lower frictional resistance, generally need in slippery water fracturing liquid to add flow improver additive.
Water-based drag reducer is the earliest polymkeric substance, but the viscosity of solution polymer product own is large, and polymer content is low, and dissolution time is long, unstable chemcial property, brings constant greatly therefore to transport and use.It is crucial that polymer drag reducer polymer drag reducing agent is generally linear molecule, and molecular weight is greater than 500,000, but under the effect of the factors such as Strong shear power, high temperature, backbone will be destroyed, and cannot repair.Pay close attention to widely therefore, it is possible to the tensio-active agent flow improver forming vermiculate glues causes.And tensio-active agent effectively can reduce and injects contact angle between fluid and reservoir fluid, rock and surface tension, reduce the capillary force that drag reduction water flows in shale reservoir, and then improve fracturing effect.
Tensio-active agent vermiculate glues (is less than 10 under low Reynolds number
4) be present in the aqueous solution in a kind of mode of lack of alignment, flowing is sheared and does not almost act on.(10 are greater than under high Reynolds number
4), aligning of micella result in obviously drag-reduction effect.And (10 are greater than under higher Reynolds number
5), shearing force destroys vermiculate glues, and drag-reduction effect reduces fast.The Reynolds number scope that surfactant system has obvious drag-reduction effect depends on several factors, such as: total concn, proportioning, surfactant hydrophobic chain length etc.
Lot of documents shows, cats product and organic salt mixed system easily form vermiculate glues.Some of them system effectively applies in the heat exchange applications of pipeline, but most of cats product/organic salt system, and such as cetyl trimethylammonium bromide/sodium salicylate system is not suitable for low temperature system, is being less than 20
oeasily separate out during C and lose drag-reduction effect.In order to make this system be applied in low temperature system, the Krafft's point (Krafft point) of this mixed system effectively must be reduced.General solution reduces length or the introducing double bond of surfactant hydrophobic chain, but this also correspondingly reduces the micelle-forming concentration of mixed system, causes the use temperature upper limit to reduce.Fracturing liquid flow improver needs to be injected into hydrocarbon-bearing pool from earth's surface, must be applicable to very wide temperature range.US 4615825(Friction reduction using a viscoelastic surfactant) disclose employing cetyltrimethylammonium hydroxide, Whitfield's ointment etc. according to the composite formation flow improver of suitable proportion, but the temperature range that the flow improver of prior art uses is narrow.
Summary of the invention
One of technical problem to be solved by this invention be the flow improver use temperature narrow range existed in prior art problem, there is provided a kind of composition for aqueous fracturing fluid flow improver, said composition is used for the advantage that aqueous fracturing fluid flow improver has resistance-reducing yield height and use temperature wide ranges.
Two of technical problem to be solved by this invention is the application as friction-reducing agent of fracturing fluid of the described composition of one of above-mentioned technical problem.
In order to one of solve the problems of the technologies described above, technical scheme of the present invention is as follows: for the composition of aqueous fracturing fluid flow improver, comprises the cats product described in formula (I) and fragrant hydrochlorate; Described fragrant hydrochlorate is selected from least one in formula (II) or the fragrant hydrochlorate shown in formula (III); Wherein, R is the saturated or unsaturated aliphatic base containing 8 ~ 24 carbon atoms, R
1and R
2the alkyl of 1 ~ 4 carbon atom independent of each other or the hydroxyalkyl of 2 ~ 4 carbon atoms, R
3be the hydroxyalkyl of 2 ~ 4 carbon atoms, D is chlorion, bromide anion or iodide ion;
R
4and R
5independently be selected from-SO
3m or-COON, M and N are independently selected from H, basic metal or NH
4; X is selected from H or C
1~ C
4alkyl; Y and Z independently takes from H, fluorine, chlorine, bromine, iodine, OH;
formula (I);
formula (II);
formula (III);
The weight ratio of described cats product and described fragrant hydrochlorate is 1:1 ~ 1:50; More preferably 1:1 ~ 1:20.
In technique scheme, preferred R
1, R
2and R
3in only one of them is hydroxyalkyl, all the other two is alkyl.
In technique scheme, R
4and R
5preferably from-COON.
In technique scheme, at least one of described fragrant hydrochlorate preferably in benzoate, benzene sulfonate, halogenated benzoic acid salt, halogenated benzoic acid salt, hydroxyl-substituted formate or phenolsulfonate.
In technique scheme, described cats product is preferably made up of the cats product of R to be the cats product of short-chain alkyl and R be long chain hydrocarbon groups, the carbon number more than the carbon number of short-chain alkyl 6 ~ 8 of described long chain hydrocarbon groups, now two kinds of cats products can have synergy in use temperature scope at expansion friction reducer.Described long chain hydrocarbon groups is more preferably double bond containing acyclic straight alkyl.
Composition of the present invention can be supplied in solid form for ease of accumulating, for ease of the form supply that onsite application also can be water-soluble.The present composition can also comprise other conventional component of this area, such as clay stabilizer, sterilant, Scale inhibitors, pH conditioning agent, anti-fluid loss agents, emulsion splitter etc.
When the present invention adopts aqueous solution form, the form of strong solution can be adopted, dilute when deployed, or be preferably directly made into the concentration of onsite application, the preferred described cats product of concentration of onsite application and fragrant hydrochlorate amount to and account for described composition 0.1 ~ 10kg/m
3.
In order to solve the problems of the technologies described above two, technical scheme of the present invention is as follows: according to any one of the described technical scheme of one of above-mentioned technical problem, composition is as the application of friction-reducing agent of fracturing fluid.
The preferred use temperature of method of above-mentioned application is 2 ~ 85
oc.The present composition uses in form of an aqueous solutions, and the concentration that described cats product and fragrant hydrochlorate amount in aqueous is preferably 0.1 ~ 10kg/m
3.
Cats product of the present invention can be produced like this: be RHal(Hal by chemical formula be chlorine, bromine or iodine element) compound and the structural formula of 1 ~ 3 times of mole number be NR
1r
2r
3hydramine back flow reaction in anhydrous ethanol medium, then in anhydrous ethanol medium recrystallization obtain.Described hydramine can be such as trolamine, dimethylethanolamine, methyldiethanolamine, diethylethanolamine, diisopropyl ethanolamine, n-butyldiethanolamine etc.
The measuring method of the resistance-reducing yield of the present composition is as follows:
The drag reducing efficiency of fracturing liquid flow improver uses flowing loop friction drag test macro to carry out test and obtains.Experiment test group water solution in length to be 3 meters of internal diameters the be stainless pipe of 1/2 inch along with the pressure reduction of change in flow changes.Carry out turbulent flow drag reduction flowing research time, record turbulent flow drag reduction flowing Fanning friction factor with after the result of variations of Reynolds number, by comparing with the Fanning friction factor of the water under identical Reynolds number the size obtaining drag reducing efficiency.Drag reducing efficiency
dRformula is as follows:
In formula: DR is drag reducing efficiency; Fs is the Fanning friction factor of water; F is the peaceful coefficient of model of this friction-reducing agent of fracturing fluid;
We know, reynolds number Re is the parameter-definition by streaming fluid:
μfor solvent viscosity,
ρfor the density of fluid,
qfor fluid flow rate,
dfor internal diameter of the pipeline, therefore Reynolds number and flow proportional.The data finally obtained are drag reducing efficiency
dRand the relation curve between Reynolds number.
Friction reducer of the present invention can use temperature range determining method as follows: respectively at different temperatures, 40 milliliters of friction reducer aqueous solution to be measured are placed in 50 ml beakers containing magnetic stir bar, and the mixing speed of magnetic stir bar is 700r.p.m.Described magnetic stir bar is cylindric, and diameter is 6mm, and long is the cylindric of 20mm, and the inside diameter of described beaker is 40mm.Do not occur that whirlpool or whirlpool are less than or equal to 2mm on the tested dreg reducer solution surface of whipping process, illustrate that resistance reducing effect is remarkable, illustrate that this mensuration temperature is the spendable temperature of the tested friction reducer aqueous solution.
Key problem in technology of the present invention utilizes the cats product containing hydroxyethyl and fragrant hydrochlorate to combine, use temperature wide ranges.Experimental result shows, the use temperature range spans of friction reducer of the present invention up to 80 DEG C, and adopts common cation tensio-active agent and fragrant hydrochlorate to combinationally use temperature span to be only 40 DEG C, to achieve good technique effect on year-on-year basis.
Below by specification drawings and specific embodiments, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is for embodiment 1 is 20
odrag reducing efficiency curve during C.
Fig. 2 is for embodiment 8 is 20
odrag reducing efficiency curve during C.
In figure, ordinate zou DR% represents resistance-reducing yield, and X-coordinate Re represents Reynolds number.
Embodiment
In mass-spectrometric data in embodiment, M-Br and M-Cl represents that target molecule removes bromine atoms or target molecule removes chlorine atom respectively.
[comparative example 1]
The quality such as cetyl trimethylammonium bromide and sodium salicylate is composite, is dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 15
oprecipitate at C temperature.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 20 ~ 60
oc.
[comparative example 2]
By 0.5mol bromohexadecane, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N-(2-hydroxyethyl)-N, N – dimethyl-N-hexadecyl base brometo de amonio [MS-ESI (m/z): theoretical value, 394 by mass spectrum; Actual value, 314 (M – Br)].N, N – dimethyl-N-(2-hydroxyethyl) quality such as-1-hexadecyl brometo de amonio and sodium lauryl sulphate is composite, and the aqueous solution of obtained 2000ppmw, does not have drag-reduction effect.
[embodiment 1]
0.5mol bromohexadecane, 0.75 mol N methyldiethanol amine, 300g dehydrated alcohol are joined in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N-methyl-N, N-two (2-hydroxyethyl)-1-hexadecyl brometo de amonio [MS-ESI (m/z): theoretical value, 424 by mass spectrum; Actual value, 344 (M-Br)].N, N – dimethyl-N-mixing such as mass ratio such as (2-hydroxyethyl)-1-hexadecyl brometo de amonio and sodium salicylate etc.Be dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 73%.Fig. 1 is 20
odrag reducing efficiency curve during C.Temperature applicable range is 2 ~ 60
oc, 2
oCwith 60
oCtime the highest drag reducing efficiency all can remain on 70%.
[embodiment 2]
0.5mol bromohexadecane, 0.75 mol N methyldiethanol amine, 300g dehydrated alcohol are joined in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N-methyl-N, N-two (2-hydroxyethyl)-1-hexadecyl brometo de amonio [MS-ESI (m/z): theoretical value, 424 by mass spectrum; Actual value, 344 (M-Br)].Obtained cats product and sodium salicylate are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 2 ~ 60
oc.
[embodiment 3]
0.5mol bromohexadecane, 0.75 mol trolamine, 300g dehydrated alcohol are joined in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N, N, N – tri-(2-hydroxyethyl)-1-hexadecyl brometo de amonio [MS-ESI (m/z): theoretical value, 454 by mass spectrum; Actual value, 374 (M-Br)].Obtained cats product and sodium salicylate are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 2 ~ 55
oc.
[embodiment 4]
Mass ratio such as N – methyl-N, N – bis-(2-hydroxyethyl)-1-hexadecyl brometo de amonio and 2-sodium naphthalene sulfonate etc. mixes.Be dissolved into the blue emulsion of obtained 2000ppmw in water, there is no drag-reduction effect.
[embodiment 5]
Mass ratio such as N – methyl-N, N – bis-(2-hydroxyethyl)-1-hexadecyl brometo de amonio and naphthoic acid sodium etc. mixes.Be dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 2 ~ 60
oc.
[embodiment 6]
By 0.5mol bromododecane, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N, N – dimethyl-N-(2-hydroxyethyl)-1-dodecyl bromination ammonium [MS-ESI (m/z): theoretical value, 338 by mass spectrum; Actual value, 258 (M-Br)].Obtained cats product and naphthoic acid sodium are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 2 ~ 40
oc.
[embodiment 7]
By 0.5mol bromotetradecane, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N, N – dimethyl-N-(2-hydroxyethyl)-1-Tetradecylammonium bromide [MS-ESI (m/z): theoretical value, 366 by mass spectrum; Actual value, 286 (M-Br)].Obtained cats product and naphthoic acid sodium are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 2 ~ 45
oc.
[embodiment 8]
By 0.5mol bromo-octadecane, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product the obtained recrystallization in dehydrated alcohol that cools down obtains white solid, confirms as target product N, N – dimethyl-N-(2-hydroxyethyl)-1-octadecyl bromination ammonium [MS-ESI (m/z): theoretical value, 422 by mass spectrum; Actual value, 342 (M-Br)].Obtained cats product and naphthoic acid sodium are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 2 ~ 70
oc.
[embodiment 9]
1mol oleyl alcohol, 0.02mol DMF adds in 1000ml reaction flask in the lump, oil bath temperature 40
oc, 1.1mol 146g thionyl chloride adds gradually, and 1.5h drips off, and continues backflow 2h afterwards, intensification oil bath temperature 80
oc continues backflow 2h.Oil pump revolves steaming and obtains sterling chloro octadecylene hydrocarbon 0.95mol.Reactant oleyl alcohol is not had in infrared display product.By 0.5mol chloro octadecylene hydrocarbon, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product obtained obtains oily liquids by being separated, and confirms as target product N by mass spectrum, N – dimethyl-N-(2-hydroxyethyl)-1-oleyl ammonium chloride [MS-ESI (m/z): theoretical value, 376; Actual value, 340.5 (M-Cl)].Obtained cats product and naphthoic acid sodium are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 15
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 15 ~ 70
oc.
[embodiment 10]
1mol mustard alcohol, 0.02mol DMF adds in 1000ml reaction flask in the lump, oil bath temperature 40
oc, 1.1mol 146g thionyl chloride adds gradually, and 1.5h drips off, and continues backflow 2h afterwards, intensification oil bath temperature 80
oc continues backflow 2h.Oil pump revolves steaming and obtains sterling chloro docosene hydrocarbon 0.95mol.Reactant mustard alcohol is not had in infrared display product.By 0.5mol chloro docosene hydrocarbon, 0.75 mol N, N-dimethylethanolamine, 300g dehydrated alcohol join in the 2000ml reaction flask being furnished with sealing machine stirring, thermometer, condenser west tube, receiving flask in the lump, oil bath temperature 100
oc, reaction backflow 16h.The product obtained obtains oily liquids by being separated, and confirms as target product N by mass spectrum, N – dimethyl-N-(2-hydroxyethyl)-1-mustard ammonium chloride [MS-ESI (m/z): theoretical value, 432; Actual value, 396.5 (M-Cl)].Obtained cats product and naphthoic acid sodium are dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 15
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 15 ~ 85
oc.
[embodiment 11]
The mass ratio mixing such as N, N – dimethyl-N-(2-hydroxyethyl)-1-dodecyl bromination ammonium, N, N – dimethyl-N-(2-hydroxyethyl)-1-octadecyl bromination ammonium, naphthoic acid sodium 0.7:0.3:1.Be dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 65%.Temperature applicable range is 2 ~ 65
oc.
[embodiment 12]
N, N – dimethyl-N-(2-hydroxyethyl)-1-dodecyl bromination ammonium, N, N – dimethyl-N-(2-hydroxyethyl)-1-oleyl ammonium chloride and naphthoic acid sodium is mixed according to the mass ratio of 0.5:0.5:1.Be dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 2 ~ 70
oc.
[embodiment 13]
N, N – dimethyl-N-(2-hydroxyethyl)-1-dodecyl bromination ammonium, N, N – dimethyl-N-(2-hydroxyethyl)-1-mustard ammonium chloride and naphthoic acid sodium is mixed according to the mass ratio of 0.3:0.7:1.Be dissolved into the friction reducer aqueous solution of obtained 2000ppmw in water, 2
okeep under C environment not precipitating for 7 days, clear.Drag reducing efficiency under test differing temps, the highest drag reducing efficiency can remain on 70%.Temperature applicable range is 2 ~ 85
oc.
The present inventor finds, cats product of the present invention is made up of and the carbon number of described long chain hydrocarbon groups more than the carbon number of short-chain alkyl 6 ~ 8 cats product of R to be the cats product of short-chain alkyl and R be long chain hydrocarbon groups, and now two kinds of cats products can have synergy in use temperature scope at expansion friction reducer.This also can from embodiment 6 and embodiment 8 and embodiment 11 on year-on-year basis, or embodiment 6 and embodiment 9 and embodiment 12, or embodiment 6 and embodiment 10 and embodiment 13 on year-on-year basis in intuitively find out.
Table 1
Claims (10)
1., for the composition of aqueous fracturing fluid flow improver, comprise the cats product described in formula (I) and fragrant hydrochlorate; Described fragrant hydrochlorate is selected from least one in formula (II) or the fragrant hydrochlorate shown in formula (III); Wherein, R is the saturated or unsaturated aliphatic base containing 8 ~ 24 carbon atoms, R
1and R
2the alkyl of 1 ~ 4 carbon atom independent of each other or the hydroxyalkyl of 2 ~ 4 carbon atoms, R
3be the hydroxyalkyl of 2 ~ 4 carbon atoms, D is chlorion, bromide anion or iodide ion; R
4and R
5independently be selected from-SO
3m or-COON, M and N are independently selected from H, basic metal or NH
4; X is selected from H or C
1~ C
4alkyl; Y and Z independently takes from H, fluorine, chlorine, bromine, iodine, OH;
formula (I);
formula (II);
formula (III);
The weight ratio of described cats product and described fragrant hydrochlorate is 1:1 ~ 1:50.
2. composition according to claim 1, is characterized in that R
1, R
2and R
3in only one of them is hydroxyalkyl, all the other two is alkyl.
3. composition according to claim 2, is characterized in that R
4and R
5be selected from-COON.
4. composition according to claim 2, is characterized in that described fragrant hydrochlorate is selected from least one in benzoate, benzene sulfonate, halogenated benzoic acid salt, halogenated benzoic acid salt, hydroxyl-substituted formate or phenolsulfonate.
5. composition according to claim 2, it is characterized in that described cats product is made up of the cats product of R to be the cats product of short-chain alkyl and R be long chain hydrocarbon groups, the carbon number more than the carbon number of short-chain alkyl 6 ~ 8 of described long chain hydrocarbon groups.
6. composition according to claim 5, is characterized in that described long chain hydrocarbon groups is double bond containing acyclic straight alkyl.
7. composition according to any one of claim 1 to 6, is characterized in that described composition comprises water, and wherein said cats product and fragrant hydrochlorate amount to and account for described composition 0.1 ~ 10kg/m
3.
8. composition according to any one of claim 1 to 7 is as the application of friction-reducing agent of fracturing fluid.
9. application according to claim 1, is characterized in that the temperature of described application is 2 ~ 85
oc.
10. application according to claim 1, is characterized in that described composition uses in form of an aqueous solutions, and the concentration that described cats product and fragrant hydrochlorate amount in aqueous is 0.1 ~ 10kg/m
3.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240687A (en) * | 2015-09-11 | 2016-01-13 | 中国石油大学胜利学院 | Additive used for improving shear-resistant property of water-based crude oil drag reducer |
| CN105423129A (en) * | 2015-10-30 | 2016-03-23 | 中国石油大学胜利学院 | Additive for improving shear-resistant property of oil-based crude oil drag reducing agent and using method |
| CN107794028A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its application |
| CN107794029A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and preparation method and application |
| CN107794024A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its preparation method and application |
| CN107794027A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its application and preparation method |
| CN107794026A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105240687A (en) * | 2015-09-11 | 2016-01-13 | 中国石油大学胜利学院 | Additive used for improving shear-resistant property of water-based crude oil drag reducer |
| CN105423129A (en) * | 2015-10-30 | 2016-03-23 | 中国石油大学胜利学院 | Additive for improving shear-resistant property of oil-based crude oil drag reducing agent and using method |
| CN107794028A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its application |
| CN107794029A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and preparation method and application |
| CN107794024A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its preparation method and application |
| CN107794027A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and its application and preparation method |
| CN107794026A (en) * | 2016-09-06 | 2018-03-13 | 中国石油化工股份有限公司 | Friction-reducing agent of fracturing fluid and application |
| CN107794029B (en) * | 2016-09-06 | 2020-05-05 | 中国石油化工股份有限公司 | Resistance reducing agent for fracturing fluid, preparation method and application |
| CN107794026B (en) * | 2016-09-06 | 2020-05-05 | 中国石油化工股份有限公司 | Resistance reducing agent for fracturing fluid and application thereof |
| CN107794027B (en) * | 2016-09-06 | 2020-08-07 | 中国石油化工股份有限公司 | Resistance reducing agent for fracturing fluid and application and preparation method thereof |
| CN107794024B (en) * | 2016-09-06 | 2022-05-27 | 中国石油化工股份有限公司 | Fracturing fluid resistance reducing agent and preparation method and application thereof |
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