CN106147740A - A kind of recycling method of polymer fracturing fluid - Google Patents
A kind of recycling method of polymer fracturing fluid Download PDFInfo
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- 239000012530 fluid Substances 0.000 title claims abstract description 87
- 229920000642 polymer Polymers 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000003431 cross linking reagent Substances 0.000 claims description 20
- 239000000654 additive Substances 0.000 claims description 19
- 230000000996 additive effect Effects 0.000 claims description 19
- 239000004088 foaming agent Substances 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 18
- 239000002562 thickening agent Substances 0.000 claims description 18
- 239000004927 clay Substances 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 17
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 239000004971 Cross linker Substances 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002736 nonionic surfactant Substances 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 claims description 3
- 235000015122 lemonade Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000003317 industrial substance Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
- 150000001412 amines Chemical group 0.000 description 4
- 229920006037 cross link polymer Polymers 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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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
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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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- 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
- C09K8/604—Polymeric surfactants
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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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
- C09K8/665—Compositions based on water or polar solvents containing inorganic compounds
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- C—CHEMISTRY; METALLURGY
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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
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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Abstract
The invention belongs to crosslinked gel fracturing fluid technical field, be specifically related to the recycling method of a kind of polymer fracturing fluid, comprise the following steps: 1) fracturing liquid rubber-breaking；2) discharge opeing is returned in collection；3) preparing fracturing fluid；4) pressing crack construction is completed.The invention has the beneficial effects as follows: return discharge opeing and repeat dosing, fresh-water-saving resource, effectively solve to return that discharge opeing is difficult, a difficult problem for environmental pollution, there is the feature of energy-saving and emission-reduction, environmental protection, on-the-spot continuous mixture can be realized simultaneously, effectively shorten the standby water cycle, improve efficiency of construction, save industrial chemicals.
Description
Technical field
The invention belongs to crosslinked gel fracturing fluid technical field, be specifically related to the recycling method of a kind of polymer fracturing fluid.
Background technology
In recent years, with continually developing of the fine and close compact reservoir such as oil gas, shale gas, large-scale fracture stimulation operations is that the exploitation of low permeability oil and gas field provides strong support, greatly improve oil gas well capacity, but meanwhile, large-scale fracturing work creates and substantial amounts of returns discharge opeing sewage, it is impossible to be effectively addressed utilization.Owing near oil gas field, the problem such as shortage of fresh water and environmental protection highlights day by day, therefore the drawbacks such as fracturing fluid anti-removal waste fluid processing mode highlight day by day, seriously constrain the exploitation of adjustment well.
Content of the invention
It is an object of the invention to meet saving water resource, environmental protection and economy demand, discharge opeing is returned to scene and recycles.
To this end, the invention provides the recycling method of a kind of polymer fracturing fluid, comprise the following steps:
Step 1) fracturing liquid rubber-breaking: under the conditions of 95 DEG C, adds gel breaker to stand 5h at polymer fracturing fluid, obtains the breaking glue solution of polymer fracturing fluid, and described fracturing fluid is 1200 ~ 2000 with the mass ratio of gel breaker；
Step 2) collect and return discharge opeing: collected polymer fracturing fluid return discharge opeing；
Step 3) preparing fracturing fluid: in terms of the fracturing fluid gross mass that need to prepare, the thickening agent of 0.5%-0.8% is added in the breaking glue solution of 97%-98%, rotating speed 1000 revs/min, sequentially add after stirring 5 minutes 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, the conditioning agent of 0.1%-0.3%, be eventually adding 0.4%-0.8% account for crosslinking agent formed fracturing fluid；
Step 4) completes pressing crack construction: uses the fracturing fluid of configuration as pad of frac, load fluid or displacement fluid, completes pressing crack construction.
Described polymer fracturing fluid is made up of the material of following mass percent: thickening agent 0.4%-0.6%, cleanup additive 0.3%, clay stabilizer 0.3%, foaming agent 0.3%, gel breaker 0.03%-0.05%, crosslinking agent 0.3%-0.6%, balance of clear water.
Described thickening agent is partially hydrolyzed polyacrylamide (PHPA), and molecular weight is 2,000,000-400 ten thousand.
Described cleanup additive is fluorocarbon surfactant.
Described foaming agent is non-ionic surfactant OP-10.
Described gel breaker is ammonium persulfate.
Described crosslinking agent is organic zirconium crosslinker, is by the zirconium oxychloride that mass percent is 5%, 5% isopropanol, 20% glycerine, 1% acetic acid and 69% distilled water, reacts and obtain for 4 hours at 60 DEG C.
Described conditioning agent is the lemonade solution that mass percentage concentration is 5%.
The invention has the beneficial effects as follows:
(1) return discharge opeing and repeat dosing, fresh-water-saving resource, there is the feature of energy-saving and emission-reduction, environmental protection, effectively shorten the standby water cycle simultaneously, improve efficiency of construction；
(2) realize returning discharge opeing recycling, effectively solve to return that discharge opeing is difficult, a difficult problem for environmental pollution；
(3) on-the-spot continuous mixture can be realized, improve efficiency of construction, save industrial chemicals.
It is described in further details below in conjunction with accompanying drawing.
Brief description
Fig. 1 is the polymer fracturing fluid rheological curve (100 DEG C) of clear water preparation；
The polymer fracturing fluid rheological curve (100 DEG C) of Fig. 2 breaking glue solution preparation.
Detailed description of the invention
Embodiment 1:
Present embodiments provide the recycling method of a kind of polymer fracturing fluid, comprise the following steps:
Step 1) fracturing liquid rubber-breaking: under the conditions of 95 DEG C, adds gel breaker to stand 5h at polymer fracturing fluid, obtains the breaking glue solution of polymer fracturing fluid, and described fracturing fluid is 1200 ~ 2000 with the mass ratio of gel breaker；
Step 2) collect and return discharge opeing: collected polymer fracturing fluid return discharge opeing；
Step 3) preparing fracturing fluid: in terms of the fracturing fluid gross mass that need to prepare, the thickening agent of 0.5%-0.8% is added in the breaking glue solution of 97%-98%, rotating speed 1000 revs/min, sequentially add after stirring 5 minutes 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, the conditioning agent of 0.1%-0.3%, be eventually adding 0.4%-0.8% crosslinking agent formed fracturing fluid；
Step 4) completes pressing crack construction: uses the fracturing fluid of preparation as pad of frac, load fluid or displacement fluid, completes pressing crack construction.
Wherein, polymer fracturing fluid is made up of the material of following mass percent: thickening agent 0.4%-0.6%, cleanup additive 0.3%, clay stabilizer 0.3%, foaming agent 0.3%, gel breaker 0.03%-0.05%, crosslinking agent 0.3%-0.6%, balance of clear water.
The preparation of this polymer fracturing fluid: use the compounding method that this area is conventional, the thickening agent of formula ratio is added in breaking glue solution, rotating speed 1000 revs/min, clay stabilizer, cleanup additive, foaming agent and the gel breaker of formula ratio is sequentially added after stirring 5 minutes, form fracturing fluid after being subsequently adding crosslinking agent, fracturing fluid is crosslinked good, can hang completely.
The effect of each component of the present invention: thickening agent is partially hydrolyzed polyacrylamide (PHPA), molecular weight 2,000,000-400 ten thousand, owing to breaking glue solution being mixed with part high volence metal ion, for improving the stability of fracturing fluid, improve the concentration of thickening agent, for the reservoir of about 100 DEG C, its optimal concentration is 0.5%-0.8%.
Cleanup additive is fluorocarbon surfactant, can significantly reduce surface tension when consumption is more than 0.3% to below 30mN/m, the effectively capillary resistance during the reduction row of returning, the row's of returning efficiency of raising fracturing liquid rubber-breaking liquid.
Foaming agent is non-ionic surfactant OP-10, and when consumption is 0.3%, foam quality can reach more than 45%, effectively reduces fluid density, reduces head of liquid, beneficially the fracturing liquid rubber-breaking liquid row of returning rapidly.
Crosslinking agent is organic zirconium crosslinker, is by the zirconium oxychloride that mass percentage concentration is 5%, 5% isopropanol, 20% glycerine, 1% acetic acid and 69% distilled water, reacts the organic zirconium crosslinker obtaining for 4 hours at 60 DEG C, and crosslinking agent makes crosslinked polymer become gelled fracturing fluid.
Gel breaker is ammonium persulfate, redox reaction occurs under high temperature, destroys fracturing fluid gel structure.When gel breaker consumption is 0.05%-0.08%, under the conditions of 95 DEG C, in 8 hours, this fracturing fluid can break glue completely, and breaking glue solution viscosity is less than 5mPa s.
Clay stabilizer is product commonly used in the art, belongs to quaternary amines product, and quality index performs standard Q/ SYC-104-2007, and when consumption is 0.3%, anti-clayswelling rate i.e. can reach more than 50%.
Conditioning agent is 5% aqueous citric acid solution, for regulating the pH value of fracturing fluid to neutrality.
Embodiment 2:
On the basis of embodiment 1, prepared polymer fracturing fluid, in terms of the polymer fracturing fluid gross mass that need to prepare, thickening agent by 0.4% adds clear water, rotating speed 1000 revs/min, sequentially adds 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, 0.03% gel breaker after stirring 5 minutes, forms polymer fracturing fluid after being subsequently adding 0.3% crosslinking agent, this polymer fracturing fluid is crosslinked good, can hang completely.
The polymer fracturing fluid of above-mentioned preparation is applied to pressing crack construction, after pressing crack construction is complete, collects and return discharge opeing.
Take above-mentioned broken glue and return discharge opeing repetition preparing fracturing fluid, in terms of the fracturing fluid gross mass that need to prepare, thickening agent by 0.5% adds in breaking glue solution, rotating speed 1000 revs/min, sequentially add after stirring 5 minutes 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, the conditioning agent of 0.1%, the crosslinking agent being eventually adding 0.4% forms fracturing fluid, and the fracturing fluid repeating preparation is crosslinked good, can hang completely.
In the present embodiment, thickening agent is partially hydrolyzed polyacrylamide (PHPA), molecular weight 2,000,000-400 ten thousand, cleanup additive is fluorocarbon surfactant, foaming agent is non-ionic surfactant OP-10, and crosslinking agent is organic zirconium crosslinker, and gel breaker is ammonium persulfate, conditioning agent is 5% aqueous citric acid solution, clay stabilizer quaternary amines product.
Embodiment 3:
On the basis of embodiment 1, prepared polymer fracturing fluid, in terms of the polymer fracturing fluid gross mass that need to prepare, thickening agent by 0.6% adds clear water, rotating speed 1000 revs/min, sequentially adds 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, 0.05% gel breaker after stirring 5 minutes, forms polymer fracturing fluid after being subsequently adding 0.6% crosslinking agent, this polymer fracturing fluid is crosslinked good, can hang completely.
The polymer fracturing fluid of above-mentioned preparation is applied to pressing crack construction, after pressing crack construction is complete, collects and return discharge opeing.
Take above-mentioned broken glue and return discharge opeing repetition preparing fracturing fluid, in terms of the fracturing fluid gross mass that need to prepare, thickening agent by 0.8% adds in breaking glue solution, rotating speed 1000 revs/min, sequentially add after stirring 5 minutes 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, the conditioning agent of 0.3%, the crosslinking agent being eventually adding 0.8% forms fracturing fluid, and the fracturing fluid repeating preparation is crosslinked good, can hang completely
In the present embodiment, thickening agent is partially hydrolyzed polyacrylamide (PHPA), molecular weight 2,000,000-400 ten thousand, cleanup additive is fluorocarbon surfactant, foaming agent is non-ionic surfactant OP-10, and crosslinking agent is organic zirconium crosslinker, and gel breaker is ammonium persulfate, conditioning agent is 5% aqueous citric acid solution, clay stabilizer quaternary amines product.
Embodiment 3:
On the basis of embodiment 1, prepared polymer fracturing fluid, 2.5g(0.5% is added in 490.8g clear water) partially hydrolyzed polyacrylamide (PHPA), stir 5min with Wu's grace agitator speed 1000 revs/min, be subsequently adding 1.5g(0.3%) clay stabilizer, 1.5g(0.3%) cleanup additive, 1.5g(0.3%) foaming agent, add crosslinking agent 2.0g(0.4%), be stirred continuously, obtaining crosslinked polymer gelled fracturing fluid, gelation time is 30s.This fracturing fluid has good temperature and shearing sustainability, at 100 DEG C, 170s-1Under, continuous shear stress 90min viscosity is maintained at more than 300mPa s, and its rheological curve is as it is shown in figure 1, in figure, T=f (t) is the function of temperature and time, and η=f (t) is the function curve of viscosity and time.
The polymer fracturing fluid of above-mentioned preparation is applied to pressing crack construction, after pressing crack construction is complete, collects and return discharge opeing.
Take above-mentioned broken glue and return discharge opeing liquid, repeat prepared polymer fracturing fluid.
3.0g(0.6% is added in 500g breaking glue solution) partially hydrolyzed polyacrylamide (PHPA), stirs 5min with Wu's grace agitator speed 1000 revs/min.Add 1.5g(0.3%) clay stabilizer, 1.5g(0.3%) cleanup additive, 1.5g(0.3%) foaming agent, 1.5g(0.3%) conditioning agent, add crosslinking agent 3.0g(0.6%), being stirred continuously, obtaining the crosslinked gel fracturing fluid of breaking glue solution preparation, gelation time is 60s.This fracturing fluid has good temperature and shearing sustainability, at 100 DEG C, 170s-1Under, continuous shear stress 90min viscosity is maintained at more than 100mPa s, and its rheological curve is as shown in Figure 2.
In the present embodiment, thickening agent is partially hydrolyzed polyacrylamide (PHPA), molecular weight 2,000,000-400 ten thousand, cleanup additive is fluorocarbon surfactant, foaming agent is non-ionic surfactant OP-10, and crosslinking agent is organic zirconium crosslinker, and gel breaker is ammonium persulfate, conditioning agent is 5% aqueous citric acid solution, clay stabilizer quaternary amines product.
In sum, the invention has the beneficial effects as follows: return discharge opeing and repeat dosing, fresh-water-saving resource, effectively solve to return that discharge opeing is difficult, a difficult problem for environmental pollution, there is the feature of energy-saving and emission-reduction, environmental protection, on-the-spot continuous mixture can be realized simultaneously, effectively shorten the standby water cycle, improve efficiency of construction, save industrial chemicals.
The properties of product method of testing that the present embodiment does not describe in detail belongs to the known of the industry or common testing methods, does not describes one by one here.
The only illustration to the present invention exemplified as above, is not intended that the restriction to protection scope of the present invention, and the every and same or analogous design of the present invention belongs within protection scope of the present invention.
Claims (8)
1. the recycling method of a polymer fracturing fluid, it is characterised in that comprise the following steps:
Step 1) fracturing liquid rubber-breaking: under the conditions of 95 DEG C, adds gel breaker to stand 5h in polymer fracturing fluid, obtains the breaking glue solution of polymer fracturing fluid, and described fracturing fluid is 1200 ~ 2000 with the mass ratio of gel breaker；
Step 2) collect and return discharge opeing: return discharge opeing after collected polymer fracturing liquid rubber-breaking；
Step 3) preparing fracturing fluid: in terms of the fracturing fluid gross mass that need to prepare, the thickening agent of 0.5%-0.8% is added in the breaking glue solution of 97%-98%, rotating speed 1000 revs/min, sequentially add after stirring 5 minutes 0.3% clay stabilizer, 0.3% cleanup additive, 0.3% foaming agent, the conditioning agent of 0.1%-0.3%, be eventually adding 0.4%-0.8% crosslinking agent formed fracturing fluid；
Step 4) completes pressing crack construction: uses the fracturing fluid of preparation as pad of frac, load fluid or displacement fluid, completes pressing crack construction.
2. the recycling method of a kind of polymer fracturing fluid according to claim 1, it is characterized in that, described polymer fracturing fluid is made up of the material of following mass percent: thickening agent 0.4%-0.6%, cleanup additive 0.3%, clay stabilizer 0.3%, foaming agent 0.3%, gel breaker 0.03%-0.05%, crosslinking agent 0.3%-0.6%, balance of clear water.
3. the recycling method of a kind of polymer fracturing fluid according to claim 1 and 2, it is characterised in that: described thickening agent is partially hydrolyzed polyacrylamide (PHPA), and molecular weight is 2,000,000-400 ten thousand.
4. the recycling method of a kind of polymer fracturing fluid according to claim 1 and 2, it is characterised in that: described cleanup additive is fluorocarbon surfactant.
5. the recycling method of a kind of polymer fracturing fluid according to claim 1 and 2, it is characterised in that: described foaming agent is non-ionic surfactant OP-10.
6. the recycling method of a kind of polymer fracturing fluid according to claim 1 and 2, it is characterised in that: described gel breaker is ammonium persulfate.
7. the recycling method of a kind of polymer fracturing fluid according to claim 1 and 2, it is characterised in that: described crosslinking agent is organic zirconium crosslinker, is by the zirconium oxychloride that mass percent is 5%, 5% isopropanol, 20% glycerine, 1% acetic acid and 69% distilled water, react at 60 DEG C and obtain for 4 hours.
8. the recycling method of a kind of polymer fracturing fluid according to claim 1, it is characterised in that: described conditioning agent is the lemonade solution that mass percentage concentration is 5%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867498A (en) * | 2017-02-08 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of utilization acid fracturing returns the fracturing fluid of discharge opeing preparation |
| CN108084986A (en) * | 2017-12-21 | 2018-05-29 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of recyclable polymer fracturing fluid crosslinking agent and its preparation method and application |
| CN110982506A (en) * | 2019-12-12 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Integrated recyclable mixable fracturing fluid and construction method |
| CN113389533A (en) * | 2021-07-05 | 2021-09-14 | 西南石油大学 | CO (carbon monoxide)2Integrated method for collecting, reservoir reforming and extracting crude oil |
| CN114940895A (en) * | 2022-07-27 | 2022-08-26 | 北京百利时能源技术股份有限公司 | Clean high-performance carbon dioxide foam fracturing fluid and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106867498A (en) * | 2017-02-08 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of utilization acid fracturing returns the fracturing fluid of discharge opeing preparation |
| CN106867498B (en) * | 2017-02-08 | 2020-02-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing fluid prepared from acidizing fracturing flow-back fluid |
| CN108084986A (en) * | 2017-12-21 | 2018-05-29 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of recyclable polymer fracturing fluid crosslinking agent and its preparation method and application |
| CN110982506A (en) * | 2019-12-12 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Integrated recyclable mixable fracturing fluid and construction method |
| CN113389533A (en) * | 2021-07-05 | 2021-09-14 | 西南石油大学 | CO (carbon monoxide)2Integrated method for collecting, reservoir reforming and extracting crude oil |
| CN113389533B (en) * | 2021-07-05 | 2022-03-29 | 西南石油大学 | CO (carbon monoxide)2Integrated method for collecting, reservoir reforming and extracting crude oil |
| CN114940895A (en) * | 2022-07-27 | 2022-08-26 | 北京百利时能源技术股份有限公司 | Clean high-performance carbon dioxide foam fracturing fluid and preparation method thereof |
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