CN105385434A - Polymer clean fracturing fluid and preparation method thereof - Google Patents
Polymer clean fracturing fluid and preparation method thereof Download PDFInfo
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- 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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- 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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- 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
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention relates to the technical field of oilfield exploitation, in particular to polymer clean fracturing fluid and a preparation method thereof. The polymer clean fracturing fluid is prepared from the following components in parts by weight: 0.5 to 1.2 parts of hydrophobic associating thickening agent, 0.8 to 1.5 parts of antiswelling agent, 0.2 to 0.8 part of discharge aiding agent, 0.01 to 0.03 part of gel breaker, 0.5 to 1.5 parts of rheological additive and 100 parts of fresh water. The polymer clean fracturing fluid system disclosed by the invention is excellent in temperature resistance and shear resistance, can meet the technical requirement of fracturing reformation construction of a 160-degree high-temperature low-permeability reservoir, and is stable in high-temperature rheological property; under the condition that the shearing is carried out at the temperature of 160 DEG C and the speed of 170s<-1> for 120 minutes, the viscosity is still more than or equal to 30mPa.s, and good proppant carrying capacity is realized; in addition, the polymer clean fracturing fluid has good gel breaking property; gel breaking fluid is low in surface/interfacial tension, so that flowback after fracturing is facilitated, and the damage degree to the stratum is reduced; in addition, the residue content of the gel breaking fluid is extremely low, so that the damage degree to the stratum is beneficially reduced, and the reforming effect of fracturing is improved.
Description
Technical field
The present invention relates to oilfield exploitation technical field, particularly relate to a kind of polymeric cleaners fracturing liquid and compound method thereof.
Background technology
Along with in recent years to the increasing of the hypotonic Oil in Super-low Permeability block exploratory development dynamics of each elephant, more and more higher to the reservoir reconstruction demand of hypotonic Oil in Super-low Permeability block, at present, conventional fracturing fluid system is mainly vegetable jelly system and VES clean fracturing liquid system, for low permeability reservoir fracture stimulation operations, all there is certain defect in these two kinds of systems.
Plant gum fracturing fluid system is the product after vegetable jelly and cross-linking agents, and the water insoluble matter content of vegetable jelly itself is higher, the residue produced after adding chemical cross-linking agent, and make this system residue content higher, formation has very large injury, is generally greater than 30%.
And in VES clean fracturing liquid system, due to its dosage of surfactant large (>=4%), therefore extemporaneous preparation difficulty, cost is higher, further, VES clean fracturing liquid system temperature resistance ability poor (≤110 DEG C), in addition, VES clean fracturing liquid system breaks the bad control of glue, especially for gas-bearing formation.
Summary of the invention
In view of the above problems, the present invention is proposed to provide a kind of overcoming the problems referred to above or the polymeric cleaners fracturing liquid solved the problem at least in part and compound method thereof.
Embodiments provide a kind of polymeric cleaners fracturing liquid, the weight of each component is as follows:
Hydrophobic association viscosity increaser 0.5 ~ 1.2 part;
Expansion-resisting agent 0.8 ~ 1.5 part;
Cleanup additive 0.2 ~ 0.8 part;
Gel breaker 0.01 ~ 0.03 part;
Auxiliary rheological agents 0.5 ~ 1.5 part;
Fresh water 100 parts.
Optionally, described hydrophobic association viscosity increaser is the multipolymer be made up of acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property;
Wherein, in described multipolymer, the mass ratio of each component is respectively: 40 ~ 50:10 ~ 15:5 ~ 10:1.0 ~ 2.0.
Optionally, described auxiliary rheological agents is by one or more in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate and sodium laurylsulfonate, with tetradecyl trimethyl ammonium chloride and/or cetyl trimethylammonium bromide, and water is composite forms, its mass ratio is respectively: 1 ~ 20:1 ~ 5:75 ~ 98.
Optionally, described expansion-resisting agent is the aqueous solution of the compound of small cation and organic cationic polymer.
Optionally, described cleanup additive is that its mass ratio is respectively by the composite solution of fatty alcohol-polyoxyethylene ether, polyoxyethylene 20 sorbitan monooleate, dodecyl benzyl dimethyl ammonium chloride and water: 1.5 ~ 2.5:1 ~ 2:0.5 ~ 1:93 ~ 94.5.
Optionally, described gel breaker is by one or both mixtures formed in ammonium persulphate, Potassium Persulphate and capsule breaker.
Based on same inventive concept, the embodiment of the present invention also provides a kind of for preparing the of the fracturing fluid method of polymeric cleaners as above, comprising:
Under agitation, added in described fresh water by described hydrophobic association viscosity increaser, obtain the first mixing solutions, wherein, the addition of described hydrophobic association viscosity increaser is 0.5% ~ 1.2% of described fresh water;
After described first mixing solutions of stirring, added in described first mixing solutions by described expansion-resisting agent, obtain the second mixing solutions, wherein, the addition of described expansion-resisting agent is 0.8% ~ 1.5% of described fresh water;
Added in described second mixing solutions by described cleanup additive, obtain the 3rd mixing solutions, wherein, the addition of described cleanup additive is 0.2% ~ 0.8% of described fresh water;
In the process stirring described 3rd mixing solutions, added by described gel breaker in described 3rd mixing solutions, obtain the 4th mixing solutions, wherein, the addition of described gel breaker is 0.01% ~ 0.03% of described fresh water;
In described 4th mixing solutions, add described auxiliary rheological agents, obtain the 5th mixing solutions, wherein, the addition of described auxiliary rheological agents is 0.5% ~ 1.5% of described fresh water;
Described 5th mixing solutions is stirred.
Optionally, the churning time of described first mixing solutions is 10 minutes.
Optionally, the churning time of described 3rd mixing solutions is 15 ~ 20 minutes.
One or more technical schemes in the embodiment of the present invention, at least have following technique effect or advantage:
Polymeric cleaners fracturing fluid system temperature and shearing sustainability of the present invention is excellent, can meet 160 DEG C of high temperature low permeability reservoir fracturing reform operating technique demands, and high temperature rheology can be stablized, at 160 DEG C, 170s
-1, shear 120min condition under, viscosity still>=30mPa.s, take sand functional, and, there is good broken colloidality energy, breaking glue solution surface and interface tension force is low, is beneficial to the row of returning after pressure, reduces the extent of injury of formation, in addition, breaking glue solution residue content is extremely low, is conducive to the extent of injury reducing formation, improves fracturing reform effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 be in the embodiment of the present invention a kind of polymeric cleaners fracturing liquid at the flow curve of 120 DEG C;
Fig. 2 be in the embodiment of the present invention a kind of polymeric cleaners fracturing liquid at the flow curve of 160 DEG C;
Fig. 3 is the schema of the of the fracturing fluid compound method of a kind of polymeric cleaners in the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of polymeric cleaners fracturing liquid, and the weight of each component is as follows: hydrophobic association viscosity increaser 0.5 ~ 1.2 part, expansion-resisting agent 0.8 ~ 1.5 part, cleanup additive 0.2 ~ 0.8 part, gel breaker 0.01 ~ 0.03 part, auxiliary rheological agents 0.5 ~ 1.5 part, fresh water 100 parts.
Optionally, hydrophobic association viscosity increaser is the multipolymer be made up of acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property, wherein, in multipolymer, the mass ratio of each component is respectively: 40 ~ 50:10 ~ 15:5 ~ 10:1.0 ~ 2.0.Regulating and controlling the structure of polymkeric substance and the viscosity of base fluid by introducing octadecyl, further increasing the of the fracturing fluid temperature and shearing sustainability of polymeric cleaners.
Specifically, the preparation method of hydrophobic association viscosity increaser is: by acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property makes the aqueous solution of 10% ~ 20% with the ratio that mass ratio is 40 ~ 50:10 ~ 15:5 ~ 10:1.0 ~ 2.0, with the constant temperature of 50 DEG C ~ 60 DEG C, logical nitrogen 20 ~ 30min, add initiator for reaction 6 ~ 8h that mass fraction is 0.3% ~ 0.5%, the mass ratio of this initiator sulfite hydrogen sodium and ammonium persulphate is 1:2, thus obtain high thick clear gum thing, through granulation, dry, pulverize, obtain hydrophobic association viscosity increaser.
Optionally, auxiliary rheological agents is by one or more in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate and sodium laurylsulfonate, with tetradecyl trimethyl ammonium chloride and/or cetyl trimethylammonium bromide, and water is composite forms, its mass ratio is respectively: 1 ~ 20:1 ~ 5:75 ~ 98.Auxiliary rheological agents is had an effect by electrostatic adhesion and hydrophobic association viscosity increaser, is formed and has certain viscoelastic frozen glue.
Optionally, expansion-resisting agent is the aqueous solution of the compound of small cation and organic cationic polymer, and its cation group is adsorbed on surface of clay by electrostatic interaction, prevents hydration and expansion of clay and dispersion migration further.
Optionally, cleanup additive is that its mass ratio is respectively by the composite solution of fatty alcohol-polyoxyethylene ether, polyoxyethylene 20 sorbitan monooleate, dodecyl benzyl dimethyl ammonium chloride and water: 1.5 ~ 2.5:1 ~ 2:0.5 ~ 1:93 ~ 94.5.Cleanup additive has lower surface and interface tension force, greatly can reduce capillary resistance, is convenient to the row of returning after the pressure of breaking glue solution.
Optionally, gel breaker is by one or both mixtures formed in ammonium persulphate, Potassium Persulphate and capsule breaker, and its strong oxidation can make the polymkeric substance chain rupture in fracturing liquid further, and broken glue is thorough, without residue.
Based on same inventive concept, the embodiment of the present invention also provides a kind of for preparing the of the fracturing fluid method of polymeric cleaners as above, as shown in Figure 3, comprising:
Step 301: under agitation, adds in fresh water by hydrophobic association viscosity increaser, obtains the first mixing solutions, and wherein, the addition of hydrophobic association viscosity increaser is 0.5% ~ 1.2% of fresh water;
Step 302: after stirring first mixing solutions, expansion-resisting agent is added in the first mixing solutions, obtain the second mixing solutions, wherein, the addition of expansion-resisting agent is 0.8% ~ 1.5% of fresh water;
Step 303: added by cleanup additive in the second mixing solutions, obtains the 3rd mixing solutions, and wherein, the addition of cleanup additive is 0.2% ~ 0.8% of fresh water;
Step 304: in the process of stirring the 3rd mixing solutions, adds gel breaker in the 3rd mixing solutions, obtains the 4th mixing solutions, and wherein, the addition of gel breaker is 0.01% ~ 0.03% of fresh water;
Step 305: add auxiliary rheological agents in the 4th mixing solutions, obtains the 5th mixing solutions, and wherein, the addition of auxiliary rheological agents is 0.5% ~ 1.5% of fresh water.
Step 306: the 5th mixing solutions is stirred.
Optionally, the churning time of the first mixing solutions is 10 minutes, and the churning time of the 3rd mixing solutions is 15 ~ 20 minutes.
Specifically, first, 1000 parts of fresh water are poured in Wu Yin agitator, open and stir, adjustment rotating speed, about 400-800r/min, make fresh water form larger whirlpool.Then, the hydrophobic association viscosity increaser of load weighted 5-12 part is slowly added in fresh water, stir 10min.Then, add 8-15 part expansion-resisting agent and 2-8 part cleanup additive, continue to stir 15-20min, hydrophobic association viscosity increaser is dissolved completely.Then, continue to stir, add the gel breaker of 0.1-0.3 part.Then, slowly add the auxiliary rheological agents of 5-15 part, until whirlpool disappears, during the slight projection of liquid level, stop stirring, form final polymeric cleaners fracturing liquid.
The application provides following two specific embodiments, to be further described polymeric cleaners fracturing liquid and compound method thereof.
Embodiment 1:
First, the preparation process of hydrophobic association viscosity increaser is as follows: acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property are made the aqueous solution of 10% with the ratio of mass ratio 50:10:6:1.2, constant temperature 55 DEG C ~ 60 DEG C, inflated with nitrogen 30min, add the initiator that mass fraction is 0.05%, reaction 7h, obtain high thick clear gum thing, through granulation, oven dry, pulverizing, obtain hydrophobic association viscosity increaser.
Then, 1000 parts of fresh water are poured in Wu Yin agitator, open and stir, adjustment rotating speed is about 400-800r/min, make fresh water form larger whirlpool, the hydrophobic association viscosity increaser of load weighted 6 parts is slowly added in fresh water, stir 10min, add 10 parts of expansion-resisting agents and 5 portions of cleanup additives, continue to stir 15-20min, make hydrophobic association viscosity increaser completely swelling, continue to stir, add the gel breaker of 0.2 part, then the auxiliary rheological agents of 6 parts is slowly added, until whirlpool disappears, during the slight projection of liquid level, stop stirring, namely form polymeric cleaners fracturing liquid finished product.
Wherein, auxiliary rheological agents forms by Sodium dodecylbenzene sulfonate, tetradecyl trimethyl ammonium chloride and water are composite, and its mass ratio is 15:2:100.Expansion-resisting agent is the aqueous solution of the compound of small cation and organic cationic polymer.Cleanup additive is the composite solution of fatty alcohol-polyoxyethylene ether, polyoxyethylene 20 sorbitan monooleate, dodecyl benzyl dimethyl ammonium chloride and water, and its mass ratio is: 2:1.5:0.8:95.7.Gel breaker is ammonium persulphate.
This system is applicable to 120 DEG C of low permeability reservoir fracturing reform constructions, 120 DEG C, 170s
-1, shear 90min condition under, system viscosity>=60mPas, is shown in Fig. 1, meets Industry code requirements.
Embodiment 2:
First, the preparation process of hydrophobic association viscosity increaser is as follows: acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property are made the aqueous solution of 15% with the ratio of mass ratio 40:15:10:2, constant temperature 60 DEG C, inflated with nitrogen 30min, add the initiator for reaction 8h that mass fraction is 0.05%, obtain high thick clear gum thing, drying, pulverizing, obtain hydrophobic association viscosity increaser.
Then, 1000 parts of fresh water are poured in Wu Yin agitator, open and stir, adjustment rotating speed is about 400-800r/min, make fresh water form larger whirlpool, the hydrophobic association viscosity increaser of load weighted 9 parts is slowly added in fresh water, stir 10min, add 12 parts of expansion-resisting agents and 5 portions of cleanup additives, continue to stir 20min, make hydrophobic association viscosity increaser dissolve completely, continue to stir, add the gel breaker of 0.3 part, then the auxiliary rheological agents of 8 parts is slowly added, until whirlpool disappears, during the slight projection of liquid level, stop stirring, namely form polymeric cleaners fracturing liquid finished product.
Wherein, auxiliary rheological agents is by Sodium dodecylbenzene sulfonate and sodium lauryl sulphate, and with tetradecyl trimethyl ammonium chloride, form with water is composite, its mass ratio is: 10:3:100, and the mass ratio of Sodium dodecylbenzene sulfonate and sodium lauryl sulphate is 7:3.Expansion-resisting agent is the aqueous solution of the compound of small cation and organic cationic polymer.Cleanup additive is the composite solution of fatty alcohol-polyoxyethylene ether, polyoxyethylene 20 sorbitan monooleate, dodecyl benzyl dimethyl ammonium chloride and water, and its mass ratio is 1.8:1.2:0.8:96.2.Gel breaker is the ammonium persulphate of capsule form.
This system is applicable to 160 DEG C of low permeability reservoir fracturing reform constructions, at 160 DEG C, 170s
-1, shear 120min condition under, system viscosity>=30mPas, is shown in Fig. 2, meets Industry code requirements.
Following table one is polymeric cleaners fracturing liquid of the present invention and guanidine gum fracturing fluid salient features contrast table, and in addition, as shown in Figure 1, polymeric cleaners fracturing liquid 160 DEG C of flow curves as shown in Figure 2 for polymeric cleaners fracturing liquid 120 DEG C of flow curves.
| Performance index | Polymeric cleaners fracturing liquid | Super guanidine gum fracturing fluid |
| Base fluid viscosity, mPas | 60～100 | 90～110 |
| Thickening time, min | 15～20 | 15～20 |
| Viscosity after crosslinked, mPas | 100～200 | 800～1000 |
| 120 DEG C, viscosity after 170s-1 shears, mPas | ＞60 | ＞100 |
| 160 DEG C, viscosity after 170s-1 shears, mPas | ＞30 | ＞100 |
| Frictional resistance rate is fallen, % | 60～70 | 50-60 |
| Residue content after broken glue, mg/L | ≤10 | ≤500 |
| Viscosity after broken glue, mPas | ≤3 | ≤5 |
| Breaking glue solution surface tension, mN/m | ≤26 | ≤28 |
| Breaking glue solution interfacial tension, mN/m | ≤2 | ≤3 |
| Core damage rate, % | ≤15 | ≤30 |
| Fracturing liquid and local water compatibleness | Without flocculation, without precipitation | Without flocculation, without precipitation |
| Steady time, sky | ≥7 | 2-3 |
Table one
According to table one, Fig. 1 and Fig. 2, polymeric cleaners fracturing fluid system of the present invention has that temperature and shearing sustainability is good, residue content is low, formation injury is little, suspend take grittiness can good, the coefficient of friction resistance is low, stability is good feature, certain basis can be laid for Efficient Development low permeability reservoir.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
The present invention is by introducing hydrophobic association viscosity increaser, make polymeric cleaners fracturing fluid system temperature and shearing sustainability excellent, 160 DEG C of high temperature low permeability reservoir fracturing reform operating technique demands can be met, and, auxiliary rheological agents is utilized to be had an effect by electrostatic adhesion and hydrophobic association viscosity increaser, formation has certain viscoelastic frozen glue, high temperature rheology can be stablized, at 160 DEG C, 170s
-1, shear 120min condition under, viscosity still>=30mPa.s, take sand functional, and, polymeric cleaners fracturing fluid system is made to have good broken colloidality energy by gel breaker, cleanup additive makes breaking glue solution surface and interface tension force low, is beneficial to the row of returning after pressure, reduces the extent of injury of formation, in addition, breaking glue solution residue content extremely low (≤10mg/L), is conducive to the extent of injury reducing formation, improves fracturing reform effect.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a polymeric cleaners fracturing liquid, is characterized in that, the weight of each component is as follows:
Hydrophobic association viscosity increaser 0.5 ~ 1.2 part;
Expansion-resisting agent 0.8 ~ 1.5 part;
Cleanup additive 0.2 ~ 0.8 part;
Gel breaker 0.01 ~ 0.03 part;
Auxiliary rheological agents 0.5 ~ 1.5 part;
Fresh water 100 parts.
2. polymeric cleaners fracturing liquid as claimed in claim 1, it is characterized in that, described hydrophobic association viscosity increaser is the multipolymer be made up of acrylamide, 2-acrylamide-2-methyl propane sulfonic, NVP, solution property;
Wherein, in described multipolymer, the mass ratio of each component is respectively: 40 ~ 50:10 ~ 15:5 ~ 10:1.0 ~ 2.0.
3. polymeric cleaners fracturing liquid as claimed in claim 1, it is characterized in that, described auxiliary rheological agents is by one or more in Sodium dodecylbenzene sulfonate, sodium lauryl sulphate and sodium laurylsulfonate, with tetradecyl trimethyl ammonium chloride and/or cetyl trimethylammonium bromide, and water is composite forms, its mass ratio is respectively: 1 ~ 20:1 ~ 5:75 ~ 98.
4. polymeric cleaners fracturing liquid as claimed in claim 1, it is characterized in that, described expansion-resisting agent is the aqueous solution of the compound of small cation and organic cationic polymer.
5. polymeric cleaners fracturing liquid as claimed in claim 1, it is characterized in that, described cleanup additive is that its mass ratio is respectively by the composite solution of fatty alcohol-polyoxyethylene ether, polyoxyethylene 20 sorbitan monooleate, dodecyl benzyl dimethyl ammonium chloride and water: 1.5 ~ 2.5:1 ~ 2:0.5 ~ 1:93 ~ 94.5.
6. polymeric cleaners fracturing liquid as claimed in claim 1, it is characterized in that, described gel breaker is by one or both mixtures formed in ammonium persulphate, Potassium Persulphate and capsule breaker.
7., for preparing the of the fracturing fluid method of polymeric cleaners as described in claim arbitrary in claim 1-6, it is characterized in that, comprise:
Under agitation, added in described fresh water by described hydrophobic association viscosity increaser, obtain the first mixing solutions, wherein, the addition of described hydrophobic association viscosity increaser is 0.5% ~ 1.2% of described fresh water;
After described first mixing solutions of stirring, added in described first mixing solutions by described expansion-resisting agent, obtain the second mixing solutions, wherein, the addition of described expansion-resisting agent is 0.8% ~ 1.5% of described fresh water;
Added in described second mixing solutions by described cleanup additive, obtain the 3rd mixing solutions, wherein, the addition of described cleanup additive is 0.2% ~ 0.8% of described fresh water;
In the process stirring described 3rd mixing solutions, added by described gel breaker in described 3rd mixing solutions, obtain the 4th mixing solutions, wherein, the addition of described gel breaker is 0.01% ~ 0.03% of described fresh water;
In described 4th mixing solutions, add described auxiliary rheological agents, obtain the 5th mixing solutions, wherein, the addition of described auxiliary rheological agents is 0.5% ~ 1.5% of described fresh water;
Described 5th mixing solutions is stirred.
8. method as claimed in claim 7, it is characterized in that, the churning time of described first mixing solutions is 10 minutes.
9. method as claimed in claim 7, it is characterized in that, the churning time of described 3rd mixing solutions is 15 ~ 20 minutes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778879A (en) * | 2016-04-06 | 2016-07-20 | 长江大学 | High-temperature self-assembled salt weightedfracturing liquid system |
| CN106046253A (en) * | 2016-06-28 | 2016-10-26 | 江西富诚环保新材料科技有限公司 | Supermolecular surface active micro-electrical type clean fracturing fluid thickening agent specially used for shale gas and preparation method thereof |
| CN106543999A (en) * | 2016-07-13 | 2017-03-29 | 成都菲尔特技术开发有限公司 | A kind of fracturing fluid |
| CN113667466A (en) * | 2021-08-13 | 2021-11-19 | 四川川庆井下科技有限公司 | Supermolecule fracturing fluid based on modified polyacrylamide and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105778879A (en) * | 2016-04-06 | 2016-07-20 | 长江大学 | High-temperature self-assembled salt weightedfracturing liquid system |
| CN106046253A (en) * | 2016-06-28 | 2016-10-26 | 江西富诚环保新材料科技有限公司 | Supermolecular surface active micro-electrical type clean fracturing fluid thickening agent specially used for shale gas and preparation method thereof |
| CN106543999A (en) * | 2016-07-13 | 2017-03-29 | 成都菲尔特技术开发有限公司 | A kind of fracturing fluid |
| CN113667466A (en) * | 2021-08-13 | 2021-11-19 | 四川川庆井下科技有限公司 | Supermolecule fracturing fluid based on modified polyacrylamide and preparation method thereof |
| CN115160493A (en) * | 2021-08-13 | 2022-10-11 | 四川川庆井下科技有限公司 | Modified polyacrylamide for improving viscoelasticity and temperature resistance of fracturing fluid, supramolecular fracturing fluid and preparation method of supramolecular fracturing fluid |
| CN115160493B (en) * | 2021-08-13 | 2023-07-25 | 四川川庆井下科技有限公司 | Modified polyacrylamide and supermolecule fracturing fluid for improving viscoelasticity and temperature resistance of fracturing fluid and preparation method of modified polyacrylamide and supermolecule fracturing fluid |
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