CN105419772B - A kind of thinner of polyacrylamide polymer - Google Patents
A kind of thinner of polyacrylamide polymer Download PDFInfo
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- CN105419772B CN105419772B CN201510999126.9A CN201510999126A CN105419772B CN 105419772 B CN105419772 B CN 105419772B CN 201510999126 A CN201510999126 A CN 201510999126A CN 105419772 B CN105419772 B CN 105419772B
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- thinner
- viscosity
- agent
- polyacrylamide
- polyacrylamide polymer
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- 229920002401 polyacrylamide Polymers 0.000 title claims abstract description 53
- 229920000642 polymer Polymers 0.000 title claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000007797 corrosion Effects 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 230000003750 conditioning effect Effects 0.000 claims abstract description 17
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- 239000012459 cleaning agent Substances 0.000 claims abstract description 13
- 239000004034 viscosity adjusting agent Substances 0.000 claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 7
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 7
- 239000001103 potassium chloride Substances 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- 235000005979 Citrus limon Nutrition 0.000 claims 2
- 244000248349 Citrus limon Species 0.000 claims 1
- 244000131522 Citrus pyriformis Species 0.000 claims 1
- 229920006322 acrylamide copolymer Polymers 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 31
- 239000012530 fluid Substances 0.000 abstract description 27
- 239000007788 liquid Substances 0.000 abstract description 8
- 150000001408 amides Chemical class 0.000 abstract description 2
- 229920000333 poly(propyleneimine) Polymers 0.000 abstract description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 21
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 12
- 239000007789 gas Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 6
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 6
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 6
- 235000011164 potassium chloride Nutrition 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 235000019398 chlorine dioxide Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001447 ferric ion Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical group [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
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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
-
- 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
- C09K8/84—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
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- C09K2208/32—Anticorrosion additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Detergent Compositions (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The present invention relates to a kind of thinners of polyacrylamide polymer, as mass fraction by as follows at being grouped as：Salinity conditioning agent 2.2 30%, viscosity modifier 0.1 0.5%, surfactant 0.1 0.5%, corrosion inhibiter 0.5 2%, cleaning agent 0.1 1%, surplus are water, and the sum of each component is 100%.Thinner provided by the present invention can realize quick viscosity reduction polyacrylamide polymer, carry out viscosity reduction to polypropylene amine amide polymer fracturing fluid, the liquid viscosity after viscosity reduction tends to water, is easy to the row of returning.
Description
Technical field
The invention belongs to oilfield prospecting developing fields, and in particular to a kind of thinner of polyacrylamide polymer.
Background technology
World's conventional gas stock number is 436 tcms, and shale gas is then up to 456,000,000,000,000 sides (according to EIA), is
One of the important development direction of the following clean energy resource.Chinese shale gas reserves are extremely abundant, are mainly distributed on the Sichuan Basin, E Er
The areas such as this more basin, Bohai gulf basin, Song-liao basin, Tarim Basin and the Junggar Basin, domestic relevant unit's assessment
Technically recoverable resources are more than 10 tcms.And assessed according to EIA, in each main shale gas resource distribution state of the world,
China occupies the first in the world with the mining resources amount of 36.1 tcms.Country's shale gas exploitation at present, frequently with horizontal well
" drag reduction water+glue " is segmented Sand Fracturing Technology on a large scale, and polyacrylamide polymer and derivative are in fracturing process
It can be attached in shaft column and stratum, block pit shaft or stratum, influence construction progress and well yield.
Moreover, for polyacrylamide polymer and derivative fracturing fluid, usually adopted in subsequent treatment process
With ammonium persulfate as broken colloid system come viscosity reduction polymer, ammonium persulfate breaks colloid system, and there are the shortcomings of following several respects：
(1) ammonium persulfate gel breaking time is long.The half-life period of ammonium persulfate is 8h at 70 DEG C；The half-life period of ammonium persulfate is at 50 DEG C
152h is decomposed too slow；At a temperature of less than 50 DEG C, ammonium persulfate gel breaking capacity declines rapidly, cannot function as aqueous fracturing fluid
Gel breaker.(2) glue is broken to be not thorough.In pressing crack construction process, under the premise of ensureing smoothly to take sand, optimize breaker concentration, soon
Fast thoroughly broken glue, but fracturing fluid, in pumping and crack closure, due to fluid loss, polymer concentration can increase 5-7 times, gather
The concentration for closing object carrys out bigger difficulty to broken adhesive tape.
Chinese patent CN101104844B discloses a kind of sulfate reducing bacteria with polyacrylamide viscosity reduction function
And its application, viscosity reduction is carried out to polyacrylamide using sulfate reducing bacteria, but sulfate reducing bacteria is a kind of anaerobic bacteria, and
And need suitable growth and breeding environment, it is important to which the sulfate reducing bacteria of high concentration is limited to high concentration polymer viscosity reduction.In
State patent CN103043830A discloses a kind of method of polyacrylamide with chlorine dioxide by acid activator viscosity reduction, environment pH
For 4-12, then causes chlorine dioxide decomposition using hydrochloric acid or phosphoric acid and generate free radicals, it is poly- that production generates peroxide viscosity reduction
Acrylamide, but the strong acid such as hydrochloric acid to be added in activation process, different degrees of corrosion can be caused to flow string；Moreover,
Free radical is discharged by chlorine dioxide and carries out viscosity reduction, and the viscosity reduction time related with temperature oil is long.
In addition, " polyacrylamide viscosity-reducing mechanism is studied in oilfield sewage ", petrochemical industry application；" the change of polyacrylamide
Learn viscosity reduction research ", Daqing Petroleum Institute's journal；" chemical viscosity reduction of polyacrylamide is studied ", oil gas field environmental protection is situated between respectively
Continue the distinct methods of polyacrylamide viscosity reduction, at present on oil field the most commonly used is oxidizing reduction, using reproducibility object is added in document
Redox reaction occurs for matter and strong oxidizer, and release generates free radicals viscosity reduction polyacrylamide, but these methods all with temperature
It is related, and viscosity reduction speed is slower.
Invention content
The technical problem to be solved by the present invention is to provide a kind of polypropylene in view of the deficiency of the prior art
The thinner of acylamide polymer, has using concentration under low, room temperature that viscosity reduction speed is fast, liquid viscosity tends to water, easily after viscosity reduction
The characteristics of row of returning.
The present invention be solve the problems, such as it is set forth above used by technical solution be：
A kind of thinner of polyacrylamide polymer, as mass fraction by as follows at being grouped as：Salinity is adjusted
Agent 2.2-30%, viscosity modifier 0.1-0.5%, surfactant 0.1-0.5%, corrosion inhibiter 0.5-2%, cleaning agent 0.1-
1%, surplus is water, and the sum of each component is 100%.
By said program, the polyacrylamide polymer is polyacrylamide polymers and its derivative.
By said program, the one kind of the salinity conditioning agent in sodium chloride, potassium chloride, magnesium chloride, calcium chloride etc.
Or several mixtures in any proportion.Preferably, the salinity conditioning agent is as mass fraction by as follows at being grouped as：5-
50%KCl, 5-50%NaCl, 0.5-25%MgCl2And 0.5-25%CaCl2.It is highly preferred that the salinity conditioning agent presses matter
Amount score meter is by as follows at being grouped as：30-50%KCl, 30-50%NaCl, 3-20%MgCl2And 3-20%CaCl2。
By said program, the viscosity modifier is selected from citric acid.
By said program, the surfactant is fluorine carbon surfactant.
By said program, the corrosion inhibiter is organic phosphate corrosion inhibiter.
By said program, the cleaning agent is iron chloride, frerrous chloride.
The preparation method of the thinner of above-mentioned polyacrylamide polymer, includes the following steps：
(1) following ingredient is weighed as mass fraction：Salinity conditioning agent 1.2-30%, viscosity modifier 0.1-0.5%,
Surfactant 0.1-0.5%, corrosion inhibiter 0.5-2%, cleaning agent 0.1-1%, surplus are water, and the sum of each component is 100%；
(2) step (1) described proportioning is pressed, salinity conditioning agent is added into water, fully dissolving is stirred, surface is then added
After activating agent and viscosity modifier stir evenly, cleaning agent and corrosion inhibiter are added, stirring is to being completely dissolved to get to polypropylene
The thinner of acylamide polymer.
The application process of the thinner of above-mentioned polyacrylamide polymer is：To containing polyacrylamide polymer
The thinner is added in solution, thinner addition is the 0.1wt%- of the solution quality for containing polyacrylamide polymer
0.5wt% reacts 30-120s under room temperature, which is reduced to 1.1-1.5mPas.
In application process, the solution containing polyacrylamide polymers is usually fracturing fluid, and polyacrylamide is poly-
It closes amount of substance concentration and is usually less than 1%；And the amount of thinner can be taken the circumstances into consideration to adjust according to concentration, cost and time.
The principle of the present invention is：The main ingredient of drag reduction water and glue is polyacrylamide and its derivative, the substance
Hydrophily is extremely strong, soluble easily in water, can form hydrogen bond with water, after aquation, electrical function occurs for strand, and strand is made to obtain greatly
Stretching, extension play the role of thickening to obtain larger hydrodynamics volume, still, the strand be flexible chain, in mineralising
It spends in the salting liquid that conditioning agent is formed, strand can crimp, to reduce viscosity；And the carboxylate radical in viscosity modifier from
Electric repulsion between son, makes polymer coils roll up, and apparent size reduces, and unfolding degree reduction in water can effectively drop
The viscosity of low polymer solution increases mobility；And so that polyacrylamide polymer is shown in aqueous solution bright for cleaning agent
Aobvious viscosity loss, viscosity reduction is extremely serious, can lose most viscosity within a very short time, lose performance completely.
In addition, the present invention also added corrosive agent and surfactant, the quick row of returning and protection shaft column can be played the role of.
Compared with prior art, the beneficial effects of the invention are as follows：
First, thinner provided by the present invention can realize quick viscosity reduction polyacrylamide polymer, to high concentration
Polypropylene amine amide polymer fracturing fluid carries out viscosity reduction, and the liquid viscosity after viscosity reduction tends to water, is easy to the row of returning.
Second, use condition of the present invention is extensive, and dosage is few, low using concentration, simple and practicable with liquid, room temperature lower short time energy
Enough realize quick viscosity reduction, no particular/special requirement will not damage the devices such as tubing string in work progress.
Third, thinner of the present invention carry charge and molecular structure by itself, polymer molecule can be made to wad a quilt with cotton
Retrogradation is formed sediment, and so that polyacrylamide polymer is shown apparent viscosity loss in aqueous solution, need not be added any initiation
Agent；Moreover, ferric ion and other metal ion synergistics is directly applied to act on to polyacrylamide polymer molecular structure
Influence, so that polyacrylamide polymer is rolled up viscosity reduction in aqueous solution, feature is that reaction speed is fast, and the viscosity reduction time is short, this
Outer ferric ion performance is stablized, easy to operate in constructing at the scene.
4th, group contained by thinner of the present invention is divided into common medicine agent, and cheap easy purchase, preparation method is simple,
Convenient for execute-in-place.
It blocks pipeline for existing in pit shaft caused by a large amount of concentration polyacrylamide polymers, influence construction progress
Technical problem, quick thinner provided by the present invention can realize quick viscosity reduction and the row of returning, in shale gas high-efficiency mining process
It is with a wide range of applications.
Description of the drawings
Fig. 1 is the apparent viscosity using 25 DEG C of 0.4wt% fracturing fluids used by test.
Fig. 2 is after thinner processing described in embodiment 1, using the apparent of 25 DEG C of 0.4wt% fracturing fluids used by test
Viscosity.
Fig. 3 is after thinner processing described in embodiment 2, using the apparent of 25 DEG C of 0.4wt% fracturing fluids used by test
Viscosity.
Fig. 4 is after thinner processing described in embodiment 3, using the apparent of 25 DEG C of 0.4wt% fracturing fluids used by test
Viscosity.
Specific implementation mode
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not
It is limited only to the following examples.
The performance test of thinner of the present invention, being applied to fracturing fluid, (specific formula of the fracturing fluid is 0.4% thick
+ 0.05% viscosity tune of+0.02% antifoaming agent of agent (polyacrylamide polymer)+0.3% auxiliary rheological agents of+0.15% synergist
Section agent, surplus are water) it is tested, the fracturing fluid pH value partial neutral.Certainly, it is polyacrylamide that the present invention, which is suitable for thickening agent,
And its fracturing fluid of derivative, fracturing fluid each component concentration can be different from formula provided by the invention.
Embodiment 1
A kind of thinner of polyacrylamide polymer, as mass fraction by as follows at being grouped as：Salinity is adjusted
Agent 2.2%, viscosity modifier citric acid 0.5%, fluorocarbon surfactant 0.1%, organic phosphate corrosion inhibiter KD-
GH022%, cleaning agent FeCl31%, surplus is water, and the sum of each component is 100%.Wherein, the salinity conditioning agent presses matter
Amount score meter is by as follows at being grouped as：45.5%KCl, 45.5%NaCl, 4.5%MgCl2And 4.5%CaCl2。
The preparation method of the thinner of above-mentioned polyacrylamide polymer, includes the following steps：By said ratio, measure
Water pours into stirring container, and the whirlpool that adjusting agitator speed to liquid is formed can see propeller-blade axis top and be
Only, salinity conditioning agent is added into water, is sufficiently stirred until be completely dissolved, adds fluorocarbon surfactant and citric acid,
4-5min is stirred, FeCl is eventually adding3And corrosion inhibiter, it is sufficiently stirred until being completely dissolved to get to polyacrylamide Type of Collective
The thinner of object.
The application process of the thinner of above-mentioned polyacrylamide polymer is：To the polyacrylamide of concentration 0.4wt%
The thinner of embodiment 1 is added in the fracturing fluid of Type of Collective object, thinner addition is the 0.4wt% of the fracturing fluid quality, is filled
Divide stirring, it is 1.09mPas that 53s is reacted under room temperature to measure fracturing fluid viscosity.Test result is as depicted in figs. 1 and 2, and drop is added
The apparent viscosity of the fracturing fluid is 86mPas when stick, and after 1 thinner 53s of example is added, apparent viscosity will be 1.09mPa
s。
Embodiment 2
A kind of thinner of polyacrylamide polymer, as mass fraction by as follows at being grouped as：Salinity is adjusted
Agent 30%, viscosity modifier citric acid 0.1%, fluorocarbon surfactant 0.5%, organic phosphate corrosion inhibiter KD-
GH020.5%, cleaning agent FeCl30.1%, surplus is water, and the sum of each component is 100%.Wherein, the salinity conditioning agent
As mass fraction by as follows at being grouped as：33.3%KCl, 33.3%NaCl, 16.7%MgCl2And 16.7%CaCl2。
The preparation method of the thinner of above-mentioned polyacrylamide polymer, includes the following steps：By said ratio, measure
Water pours into stirring container, and the whirlpool that adjusting agitator speed to liquid is formed can see propeller-blade axis top and be
Only, salinity conditioning agent is added into water, is sufficiently stirred until be completely dissolved, adds fluorocarbon surfactant and citric acid,
4-5min is stirred, FeCl is eventually adding3And corrosion inhibiter, it is sufficiently stirred until being completely dissolved to get to polyacrylamide Type of Collective
The thinner of object.
The application process of the thinner of above-mentioned polyacrylamide polymer is：To the polyacrylamide of concentration 0.4wt%
The thinner of embodiment 2 is added in the fracturing fluid of Type of Collective object, thinner addition is the 0.4% of the fracturing fluid quality, fully
It stirs, it is 1.21mPas that reaction 117s, which measures fracturing fluid viscosity, under room temperature.Test result is as shown in figures 1 and 3, and viscosity reduction is added
The apparent viscosity of the fracturing fluid is 86mPas when agent, and after 2 thinner 117s of example is added, apparent viscosity will be
1.21mPa·s。
Embodiment 3
A kind of thinner of polyacrylamide polymer, as mass fraction by as follows at being grouped as：Salinity is adjusted
Agent 16%, viscosity modifier citric acid 0.5%, fluorocarbon surfactant 0.2%, organic phosphate corrosion inhibiter KD-
GH021.5%, cleaning agent FeCl30.4%, surplus is water, and the sum of each component is 100%.Wherein, the salinity conditioning agent
As mass fraction by as follows at being grouped as：31.3%KCl, 31.3%NaCl, 18.8%MgCl2And 18.8%CaCl2。
The preparation method of the thinner of above-mentioned polyacrylamide polymer, includes the following steps：By said ratio, measure
Water pours into stirring container, and the whirlpool that adjusting agitator speed to liquid is formed can see propeller-blade axis top and be
Only, salinity conditioning agent is added into water, is sufficiently stirred until be completely dissolved, adds fluorocarbon surfactant and citric acid,
4-5min is stirred, FeCl is eventually adding3And corrosion inhibiter, it is sufficiently stirred until being completely dissolved to get to polyacrylamide Type of Collective
The thinner of object.
The application process of the thinner of above-mentioned polyacrylamide polymer is：To the polyacrylamide of concentration 0.4wt%
The thinner of embodiment 3 is added in the fracturing fluid of Type of Collective object, thinner addition is the 0.4wt% of the fracturing fluid quality, is filled
Divide stirring, it is 1.13mPas that 83s is reacted under room temperature to measure fracturing fluid viscosity.Test result is as shown in Figure 1 and Figure 4, and drop is added
The apparent viscosity of the fracturing fluid is 86mPas when stick, and after 3 thinner 86s of example is added, apparent viscosity will be 1.13mPa
s。
The above is only a preferred embodiment of the present invention, it is noted that come for those of ordinary skill in the art
It says, without departing from the concept of the premise of the invention, several modifications and variations can also be made, these belong to the present invention's
Protection domain.
Claims (4)
1. a kind of thinner of polyacrylamide polymer, it is characterised in that as mass fraction by as follows at being grouped as：Mine
Change degree conditioning agent 2.2-30%, viscosity modifier 0.1-0.5%, surfactant 0.1-0.5%, corrosion inhibiter 0.5-2%, cleaning agent
0.1-1%, surplus are water, and the sum of each component is 100%；
The salinity conditioning agent is as mass fraction by as follows at being grouped as：30-50%KCl, 30-50%NaCl, 3-20%MgCl2
And 3-20%CaCl2；The cleaning agent is one or both of iron chloride or frerrous chloride；The viscosity modifier is lemon
Lemon acid, the surfactant are fluorocarbon surfactant.
2. a kind of thinner of polyacrylamide polymer according to claim 1, it is characterised in that the corrosion inhibiter
For organic phosphate corrosion inhibiter.
3. a kind of preparation method of the thinner of polyacrylamide polymer described in claim 1, it is characterised in that including
Following steps：
（1）Following ingredient is weighed as mass fraction：Salinity conditioning agent 2.2-30%, viscosity modifier 0.1-0.5%, surface is lived
Property agent 0.1-0.5%, corrosion inhibiter 0.5-2%, cleaning agent 0.1-1%, surplus is water, the sum of each component be 100%；
（2）By step（1）Salinity conditioning agent is added into water for the proportioning, stirs fully dissolving, surface-active is then added
After agent and viscosity modifier stir evenly, cleaning agent and corrosion inhibiter are added, stirring is to being completely dissolved to get to polyacrylamide
The thinner of Type of Collective object.
4. the application process of the thinner of polyacrylamide polymer described in claim 1, it is characterised in that containing poly-
The thinner is added in the solution of acrylamide copolymer, the addition of thinner is the 0.1wt%- of the solution quality
0.5wt%, under room temperature after reaction 30-120s, the viscosity of the solution is reduced to 1.1-1.5mPas.
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| CN108641698A (en) * | 2018-04-23 | 2018-10-12 | 谢新昇 | A kind of preparation method of polydactyl acid base heavy crude thinner |
| CA3117034A1 (en) | 2018-10-22 | 2020-04-30 | Chevron U.S.A. Inc. | Ph control in fluid treatment |
| CN112028292A (en) * | 2019-06-04 | 2020-12-04 | 惠博普(武汉)生物环保科技有限公司 | Viscosity reduction treatment method for polymer-containing sewage in oil field |
| CN113774692B (en) * | 2021-11-01 | 2023-03-21 | 滨州东方地毯有限公司 | Polyacrylamide paste for carpet and preparation method thereof |
| CN114890768B (en) * | 2022-06-08 | 2023-03-10 | 济南大学 | Iron tailing road base material, preparation method and application thereof |
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Effective date of registration: 20191230 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION Patentee after: China Petrochemical Co., Ltd. Address before: 430035 Hubei city of Wuhan province Gutian two Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION |