CN116948625A - Dialysis extraction agent and preparation method thereof - Google Patents
Dialysis extraction agent and preparation method thereof Download PDFInfo
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- CN116948625A CN116948625A CN202310986938.4A CN202310986938A CN116948625A CN 116948625 A CN116948625 A CN 116948625A CN 202310986938 A CN202310986938 A CN 202310986938A CN 116948625 A CN116948625 A CN 116948625A
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- parts
- extraction agent
- dialysis
- agent
- swelling
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- 238000000502 dialysis Methods 0.000 title claims abstract description 95
- 238000000605 extraction Methods 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 135
- 230000002579 anti-swelling effect Effects 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 33
- 229920000570 polyether Polymers 0.000 claims abstract description 33
- 239000004366 Glucose oxidase Substances 0.000 claims abstract description 27
- 108010015776 Glucose oxidase Proteins 0.000 claims abstract description 27
- 108090000637 alpha-Amylases Proteins 0.000 claims abstract description 27
- 229940116332 glucose oxidase Drugs 0.000 claims abstract description 27
- 235000019420 glucose oxidase Nutrition 0.000 claims abstract description 27
- 102000004882 Lipase Human genes 0.000 claims abstract description 26
- 239000004367 Lipase Substances 0.000 claims abstract description 26
- 108090001060 Lipase Proteins 0.000 claims abstract description 26
- 108091005804 Peptidases Proteins 0.000 claims abstract description 26
- 239000004365 Protease Substances 0.000 claims abstract description 26
- 235000019421 lipase Nutrition 0.000 claims abstract description 26
- FGJVBWJCJPDCQF-UHFFFAOYSA-N acetic acid;n-(2-aminoethyl)dodecanamide Chemical compound CC(O)=O.CC(O)=O.CC(O)=O.CCCCCCCCCCCC(=O)NCCN FGJVBWJCJPDCQF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000008367 deionised water Substances 0.000 claims abstract description 15
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 15
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 14
- 102000035195 Peptidases Human genes 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 24
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 21
- 235000019419 proteases Nutrition 0.000 claims description 20
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 12
- -1 polyoxyethylene Polymers 0.000 claims description 11
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- GBRYPIJZCSCTBO-UHFFFAOYSA-J P(=O)([O-])OP(=O)[O-].OC=C.[Na+].[Na+].[Na+].[Na+].P(=O)([O-])OP(=O)[O-] Chemical compound P(=O)([O-])OP(=O)[O-].OC=C.[Na+].[Na+].[Na+].[Na+].P(=O)([O-])OP(=O)[O-] GBRYPIJZCSCTBO-UHFFFAOYSA-J 0.000 claims description 2
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 2
- 150000003863 ammonium salts Chemical group 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims description 2
- 150000002462 imidazolines Chemical class 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 11
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- 102000004190 Enzymes Human genes 0.000 abstract description 8
- 108090000790 Enzymes Proteins 0.000 abstract description 8
- 229940088598 enzyme Drugs 0.000 abstract description 8
- 230000008961 swelling Effects 0.000 abstract description 8
- 244000144972 livestock Species 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 25
- 230000000694 effects Effects 0.000 description 21
- 239000002253 acid Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 17
- 230000035699 permeability Effects 0.000 description 11
- 230000005764 inhibitory process Effects 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 238000005187 foaming Methods 0.000 description 5
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- 239000003112 inhibitor Substances 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
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- 239000004088 foaming agent Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
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- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 229920000642 polymer Polymers 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-N Gluconic acid Natural products OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007515 enzymatic degradation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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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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- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
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- C09K8/62—Compositions for forming crevices or fractures
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a dialysis extraction agent, which comprises the following components in parts by weight: the fatty alcohol block polyether comprises, by weight, 5-15 parts of alkylphenol ethoxylates, 5-15 parts of N-lauroyl ethylenediamine triacetic acid, 5-10 parts of organic anti-swelling agents, 5-10 parts of inorganic anti-swelling agents, 5-8 parts of pullulanase, 5-8 parts of glucose oxidase, 5-8 parts of proteases, 5-8 parts of lipases and 18-58 parts of deionized water. The invention also provides a preparation method of the dialysis extraction agent. In conclusion, the invention improves the raw material components of the dialysis extraction agent, firstly induces air out through the action of the combined enzyme, then eliminates water lock through the action of the fatty alcohol block polyether and the N-lauroyl ethylenediamine triacetic acid, and continuously inhibits scale and prevents swelling through the organic anti-swelling agent and the inorganic anti-swelling agent; meanwhile, the dialysis extracting agent has safe and environment-friendly raw material components, and has no harm to the environment, people and livestock.
Description
Technical Field
The invention relates to the technical field of dialysis extraction agents in oilfield fracturing and acid fracturing processes, in particular to a dialysis extraction agent and a preparation method thereof.
Background
At present, for low permeability reservoirs, fracturing and acid fracturing are one of the important ways of improving the yield of the reservoir. For gas wells, water production from the gas well is one of the main factors limiting the yield of the gas well, once the gas well is water-filled, the productivity of the gas well is rapidly reduced, if the water is not discharged in time, the water can cause accumulated liquid in the well, scale blocking and water locking effect (the water locking effect refers to the phenomenon that external phases stay in a porous medium in the exploitation process, and the other immiscible phases infiltrate into a reservoir layer, or the saturation of the original immiscible phases in the porous medium is increased, so that the relative permeability is damaged, the permeability of the reservoir layer and the relative permeability of oil gas are obviously reduced, and when the immiscible phases are water phases, the phenomenon is called water locking effect. In addition, the low-permeability gas well reservoir has thin throat and poor reservoir permeability correlation, and uneven distribution of inter-particle pores and pore throats can aggravate water lock, thereby obstructing airflow channels.
In the fracturing and acid fracturing yield increasing process, a large amount of liquid enters the bottom layer, if the liquid cannot be discharged in time, certain water damage such as water sensitivity, water lock and the like can be caused, and the Ca in the flowback liquid can be caused 2+ The deposit forms calcium carbonate and other sediment on the bottom layer, and the macromolecular hydrocarbon is gathered to cause the blockage of scale.
To solve this problem, in the existing acid fracturing process, a foaming agent, a cleanup additive or nitrogen gas is added to solve the water damage, for example, in the patent with publication number CN114836189A, CN108102635B, CN104140802B, the above materials are added to solve the water damage; however, in practical applications, there are problems such as H release from the conventional foaming agent at a certain temperature and pressure 2 S gas has certain influence on environmental protection and safety of constructors; part of the cleanup additive contains fluorine, so that the flowback liquid also contains fluorine, which is difficult to biodegrade and has a certain influence on the environment; the effect of nitrogen on solving the scale clogging or water lock effect is not significant.
Disclosure of Invention
In view of the above, the invention provides a dialysis extraction agent and a preparation method thereof, wherein the dialysis extraction agent comprises the following raw material components, wherein the raw material components are improved, the raw material components are subjected to gas outlet induction through the action of a combined enzyme, the water lock is eliminated through the action of the aliphatic alcohol block polyether and N-lauroyl ethylenediamine triacetic acid, the scale inhibition and expansion prevention effects are achieved through the combined action of an organic expansion inhibitor and an inorganic expansion inhibitor, and finally alkylphenol polyoxyethylene ether is added, so that the stability and acid resistance of the whole formula are improved. Meanwhile, the dialysis extraction agent is safe and environment-friendly, and has no harm to the environment, people and livestock.
The technical scheme of the invention is realized as follows:
in one aspect, the invention provides a dialysis extraction agent, which comprises the following components in parts by weight: the fatty alcohol block polyether comprises, by weight, 5-15 parts of alkylphenol ethoxylates, 5-15 parts of N-lauroyl ethylenediamine triacetic acid, 5-10 parts of organic anti-swelling agents, 5-10 parts of inorganic anti-swelling agents, 5-8 parts of pullulanase, 5-8 parts of glucose oxidase, 5-8 parts of proteases, 5-8 parts of lipases and 18-58 parts of deionized water.
In the invention, the purity of the aliphatic alcohol block polyether is 99%, the purity of the N-lauroyl ethylenediamine triacetic acid is 98%, the purity of the organic anti-swelling agent is 98%, and the purity of pullulanase is 99%; the alkylphenol ethoxylates comprise 99% by mass of inorganic anti-swelling agents 85% by mass, 99% by mass of glucose oxidase, 98% by mass of protease and 99% by mass of lipase.
In the invention, the organic anti-swelling agent comprises any one or more of a biquaternary ammonium salt type surfactant, a quaternary ammonium salt type surfactant, an imidazoline salt type surfactant, dodecyl trimethyl ammonium bromide and Cetyl Trimethyl Ammonium Bromide (CTAB). The inorganic anti-swelling agent comprises any one or more of hydroxy ethylene diphosphonic acid tetrasodium salt and amino trimethylene phosphonic acid pentasodium salt.
The fatty alcohol block polyether is a gemini surfactant, and can effectively reduce the surface interfacial tension of oil/water; meanwhile, the dispersing agent is also a dispersing agent, can disperse certain solid particles, prevent precipitation, shorten the dispersing time, inhibit sediment and reduce borehole blockage.
N-lauroyl ethylenediamine triacetic acid is an active agent having both surface activity and chelating properties, and can prevent calcium precipitation; meanwhile, the foaming agent has good foam stabilizing performance; can also be used as emulsifier.
The organic anti-swelling agent can effectively inhibit the swelling of clay, reduce the oil phase permeability, and has good long-acting property and good flushing resistance; can also effectively protect pipelines, and can also be used as wax inhibitor, bactericide and lubricant.
The inorganic anti-swelling agent can generate nuclear hydroxyl Qiao Lao ions, so that the clay swelling is effectively inhibited, and the migration of particles is prevented; meanwhile, the calcium carbonate scale inhibitor can inhibit the generation of calcium carbonate scale, and is a good scale inhibitor; the corrosion inhibitor can also form stable complex with various metal ions such as iron, copper, zinc and the like, can dissolve oxides on the metal surface, has good corrosion inhibition effect, and can also be used as a corrosion inhibitor.
The pullulanase can be catalyzed and hydrolyzed into reducing sugar such as glucose and the like under certain conditions, and can be reduced into amino complex after being heated, so that the pullulanase has certain catalysis effect, can accelerate the removal of organic scale in a reservoir and enhances the permeability.
The glucose oxidase can be hydrolyzed into gluconic acid, so that minerals and organic matters are degraded, degradable substances in a reservoir are properly removed, and the permeability is dredged.
The protease can degrade polymer, detritus, mudstone and other sediments in the oil and gas reservoir, enlarge the permeability of the oil layer, improve the quality of the oil layer reservoir and increase the oil and gas yield.
The lipase can rapidly degrade and convert high molecular hydrocarbon, aromatic hydrocarbon and alkyl hydrocarbon, and avoid forming organic scale blocking and compound scale formed by cementing with polymer.
Alkylphenol ethoxylates are an emulsifier, and have good wetting viscosity reduction effect and emulsifying property; is stable in acid liquor and can also be used as a stabilizer. The dialysis extraction agent can be adapted to the acid pressure environment by adding alkylphenol ethoxylates.
The dialysis extraction agent has the following action mechanism:
the gas is first induced by the action of the enzyme. Pullulanase and glucose oxidase act primarily on organic scale and degradable substances in reservoirs; proteases act primarily on deposits in hydrocarbon reservoirs; the lipase mainly acts on high molecular hydrocarbon, aromatic hydrocarbon and alkyl hydrocarbon; through the combination of the special enzyme activity components, the natural gas permeable composite can effectively act on reservoirs, oil and gas reservoirs and hydrocarbons which influence permeability, so that the permeability of a bottom layer is improved, the pore spaces and crack spaces of the reservoirs are dredged, the pore channels of natural gas circulation are increased, and the gas flow resistance is reduced.
After the air outlet is induced by the action of enzyme, the water locking effect needs to be eliminated, and the water locking is eliminated by the action of the fatty alcohol block polyether and N-lauroyl ethylenediamine triacetic acid. The aliphatic alcohol block polyether and the N-lauroyl ethylenediamine triacetic acid are both active agents, so that the surface tension of the fracturing glue breaking solution can be effectively reduced, water lock is eliminated, the liquid flowback capacity is improved, and the flowback rate is improved while the damage of a reservoir is greatly reduced.
After the air outlet is induced and the water locking effect is eliminated, air reservoir protection is also needed, and the effects of scale inhibition and scale inhibition are achieved through the combined action of the organic anti-swelling agent and the inorganic anti-swelling agent, so that the formation of scale in a reservoir can be effectively delayed and prevented, the effective period of operation is prolonged, and a better yield increasing effect is achieved.
After the above raw materials are combined together, the air outlet can be induced, the water locking effect can be eliminated, and the air reservoir protection can be carried out, but after the various raw materials are combined together, the stability is insufficient, so that alkylphenol polyoxyethylene is further added into the dialysis extraction agent, and the stability and acid resistance of the whole formula are improved.
On the other hand, the invention also provides a preparation method of the dialysis extraction agent, which comprises the following steps:
adding the aliphatic alcohol block polyether and alkylphenol ethoxylate into a reaction kettle, filling nitrogen, purging, vacuumizing, heating to 75-85 ℃, stopping vacuumizing, uniformly mixing, and cooling to 15-25 ℃ to obtain a material I;
continuously adding N-lauroyl ethylenediaminetriacetic acid and an inorganic anti-swelling agent into a reaction kettle, heating to 140-160 ℃, stirring and uniformly mixing, and keeping the temperature of the reaction kettle at 30-60 ℃ for 11-13h to obtain a material II;
and thirdly, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water into the material II, introducing nitrogen in the whole process, and uniformly mixing at 25-35 ℃ to obtain the dialysis extraction agent.
In the first step, the aliphatic alcohol block polyether is put into a liquid constant-speed feeding device and is added into a reaction kettle, alkylphenol polyoxyethylene is put into a low-temperature reaction kettle solid feeding device and is added into the reaction kettle; nitrogen is filled for purging, and the displacement is carried out for three times; in the mixing process, the stirring speed is 800-1000r/min, and the stirring speed is 40-50min.
In the second step, the N-lauroyl ethylenediaminetriacetic acid is put into a liquid constant-speed feeding device and is added into a reaction kettle, the inorganic anti-swelling agent is put into low-temperature reaction kettle solid feeding equipment, and the inorganic anti-swelling agent is added into the reaction kettle; in the stirring and mixing process, the stirring speed is 480-550r/min, and the stirring speed is 1.8-2.5h.
In the third step, stirring is carried out for 2.8-3.3 hours under the condition of 460-550r/min in the mixing process.
Compared with the prior art, the dialysis extraction agent has the following beneficial effects:
1. and eliminating water lock. Avoiding reverse osmosis water-separating lock injury caused by bottom hole effusion.
2. And (5) efficient flowback. The high-efficiency flowback of the low-permeability tight gas reservoir is realized, the damage of fracturing fluid and acid liquor to a reservoir is reduced, and the transformation effect of fracturing and acid fracturing is improved.
3. Dredging the pore canal. And the pore space and the crack space of the reservoir are dredged, the pore canal for natural gas circulation is increased, and the natural gas flow resistance is reduced.
4. Inducing air-out. The gas reservoir is induced to release gas by dialysis.
5. Effectively preventing swelling. Effectively preventing the clay from swelling and the particles from migrating.
6. Long-term scale inhibition. The agent has high activity and scale inhibition performance, can slow down the reformation of scale, has the functions of increasing energy, long acting, reducing condensation, salting-out damage and the like, maintains the long-term flow conductivity of cracks, and prolongs the production period.
7. Is safe and environment-friendly. The product is safe and environment-friendly, and has no harm to the environment, people and livestock. The universality is strong, the application is simple, can be used in combination with various fracturing fluids and acid solutions.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Example 1
The dialysis extraction agent comprises the following components in parts by weight: the fatty alcohol block polyether comprises 5 parts of alkylphenol ethoxylates, 2 parts of N-lauroyl ethylenediamine triacetic acid, 5 parts of an organic anti-swelling agent, 5 parts of an inorganic anti-swelling agent, 5 parts of pullulanase, 5 parts of glucose oxidase, 5 parts of protease, 5 parts of lipase and 18 parts of deionized water.
The preparation method of the dialysis extraction agent comprises the following steps:
step one, putting the aliphatic alcohol block polyether into a liquid constant-speed feeding device, and putting alkylphenol polyoxyethylene into a low-temperature reaction kettle solid feeding device; adding the aliphatic alcohol block polyether and alkylphenol polyoxyethylene into a low-temperature reaction kettle, sealing the reaction kettle, filling nitrogen, purging, replacing for three times, vacuumizing, heating to 75 ℃, stopping vacuumizing, stirring for 40min under the condition that the stirring speed is 800r/min, stopping heating, and cooling to 20 ℃;
continuously adding N-lauroyl ethyldiaminetriacetic acid into a liquid constant-speed feeding device, adding an inorganic anti-swelling agent into solid feeding equipment of a low-temperature reaction kettle, heating the temperature of the reaction kettle to 140 ℃, stirring for 1.8h under the condition that the stirring speed is 480r/min, cooling, and keeping the temperature of the reaction kettle at 30 ℃ for 11h to obtain a dialysis extraction agent crude product;
and thirdly, placing the crude dialysis extraction agent product in a tank reactor, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water, introducing nitrogen in the whole process, stirring for 2.8 hours at 25 ℃ under 460r/min until the crude dialysis extraction agent product is completely dissolved, and stopping introducing nitrogen to prepare the dialysis extraction agent.
Example 2
The dialysis extraction agent comprises the following components in parts by weight: 15 parts of fatty alcohol block polyether, 8 parts of alkylphenol ethoxylates, 15 parts of N-lauroyl ethylenediamine triacetic acid, 10 parts of organic anti-swelling agents, 10 parts of inorganic anti-swelling agents, 8 parts of pullulanase, 8 parts of glucose oxidase, 8 parts of protease, 8 parts of lipase and 58 parts of deionized water.
The preparation method of the dialysis extraction agent comprises the following steps:
step one, putting the aliphatic alcohol block polyether into a liquid constant-speed feeding device, and putting alkylphenol polyoxyethylene into a low-temperature reaction kettle solid feeding device; adding the aliphatic alcohol block polyether and alkylphenol polyoxyethylene into a low-temperature reaction kettle, sealing the reaction kettle, filling nitrogen, purging, replacing for three times, vacuumizing, heating to 85 ℃, stopping vacuumizing, stirring for 50min under the condition that the stirring speed is 1000r/min, stopping heating, and cooling to 20 ℃;
continuously adding N-lauroyl ethyldiaminetriacetic acid into a liquid constant-speed feeding device, adding an inorganic anti-swelling agent into solid feeding equipment of a low-temperature reaction kettle, heating the temperature of the reaction kettle to 160 ℃, stirring for 2.5h under the condition that the stirring speed is 550r/min, cooling, and keeping the temperature of the reaction kettle at 60 ℃ for 13h to obtain a dialysis extraction agent crude product;
and thirdly, placing the crude dialysis extraction agent product in a tank reactor, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water, introducing nitrogen in the whole process, stirring for 3.3 hours at 35 ℃ and 550r/min until the crude dialysis extraction agent product is completely dissolved, and stopping introducing nitrogen to prepare the dialysis extraction agent.
Example 3
The dialysis extraction agent comprises the following components in parts by weight: 10 parts of fatty alcohol block polyether, 6 parts of alkylphenol ethoxylates, 10 parts of N-lauroyl ethylenediamine triacetic acid, 8 parts of organic anti-swelling agents, 7 parts of inorganic anti-swelling agents, 6 parts of pullulanase, 7 parts of glucose oxidase, 6 parts of protease, 5 parts of lipase and 32 parts of deionized water.
The preparation method of the dialysis extraction agent comprises the following steps:
step one, putting the aliphatic alcohol block polyether into a liquid constant-speed feeding device, and putting alkylphenol polyoxyethylene into a low-temperature reaction kettle solid feeding device; adding the aliphatic alcohol block polyether and alkylphenol polyoxyethylene into a low-temperature reaction kettle, sealing the reaction kettle, filling nitrogen, purging, replacing for three times, vacuumizing, heating to 80 ℃, stopping vacuumizing, stirring for 44min under the condition that the stirring speed is 950r/min, stopping heating, and cooling to 20 ℃;
continuously adding N-lauroyl ethyldiaminetriacetic acid and an inorganic anti-swelling agent into solid feeding equipment of a low-temperature reaction kettle in a liquid constant-speed feeding device, heating the temperature of the reaction kettle to 150 ℃, stirring for 2 hours under the condition that the stirring speed is 500r/min, cooling, and keeping the temperature of the reaction kettle at 50 ℃ for 12.5 hours to obtain a dialysis extraction agent crude product;
and thirdly, placing the crude dialysis extraction agent product in a tank reactor, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water, introducing nitrogen in the whole process, stirring for 3 hours at 30 ℃ and 500r/min until the crude dialysis extraction agent product is completely dissolved, and stopping introducing nitrogen to prepare the dialysis extraction agent.
10 parts of fatty alcohol block polyether, 6 parts of alkylphenol ethoxylates, 10 parts of N-lauroyl ethylenediamine triacetic acid, 8 parts of organic anti-swelling agents, 7 parts of inorganic anti-swelling agents, 6 parts of pullulanase, 7 parts of glucose oxidase, 6 parts of protease, 5 parts of lipase and 32 parts of deionized water.
Comparative example 1
On the basis of example 3, the components of the dialysis extraction agent were deleted of the present fatty alcohol block polyether, all other conditions being identical.
Comparative example 2
On the basis of example 3, the components of the dialysis extraction agent were deleted for N-lauroyl ethylenediamine triacetic acid, all other conditions being identical.
Comparative example 3
On the basis of example 3, the components of the dialysis extraction agent were deleted from the aliphatic alcohol block polyether and N-lauroyl ethylenediamine triacetic acid, with the other conditions being identical.
Comparative example 4
On the basis of example 3, the organic anti-swelling agent was deleted from the dialysis extraction agent, and the other conditions were identical.
Comparative example 5
On the basis of example 3, the components of the dialysis extraction agent are deleted into the inorganic anti-swelling agent, and the other conditions are identical.
Comparative example 6
On the basis of example 3, the components of the dialysis extraction agent were deleted for pullulanase, and the other conditions were identical.
Comparative example 7
On the basis of example 3, the components of the dialysis extraction reagent deleted glucose oxidase, all other conditions being identical.
Comparative example 8
On the basis of example 3, the components of the dialysis extraction agent were deleted for proteases, all other conditions being identical.
Comparative example 9
On the basis of example 3, the components of the dialysis extraction agent were deleted for lipase, and the other conditions were identical.
Comparative example 10
On the basis of example 3, the components of the dialysis extraction reagent were deleted pullulanase and glucose oxidase, and the other conditions were identical.
Comparative example 11
On the basis of example 3, the components of the dialysis extraction agent were deleted for pullulanase and protease, and the other conditions were identical.
Comparative example 12
On the basis of example 3, the components of the dialysis extraction agent were deleted for pullulanase and lipase, and the other conditions were identical.
Comparative example 13
On the basis of example 3, the components of the dialysis extraction reagent were deleted for glucose oxidase and protease, all other conditions being identical.
Comparative example 14
On the basis of example 3, the components of the dialysis extraction reagent were deleted for glucose oxidase and lipase, all other conditions being identical.
Comparative example 15
On the basis of example 3, the components of the dialysis extraction agent were deleted for protease and lipase, and the other conditions were identical.
Comparative example 16
On the basis of example 3, the components of the dialysis extraction reagent were deleted pullulanase and glucose oxidase and protease, and the other conditions were identical.
Comparative example 17
On the basis of example 3, the components of the dialysis extraction reagent were deleted pullulanase and glucose oxidase and lipase, and the other conditions were identical.
Comparative example 18
On the basis of example 3, the components of the dialysis extraction reagent were deleted for glucose oxidase and protease and lipase, all other conditions being identical.
Comparative example 19
On the basis of example 3, the components of the dialysis extraction agent are not added with any enzyme, and the other conditions are identical.
Comparative example 20 step one and two combination
The preparation method of the dialysis extraction agent comprises the following steps:
step one, putting the aliphatic alcohol block polyether and N-lauroyl ethylenediaminetriacetic acid into a liquid constant-speed feeding device, and putting alkylphenol ethoxylates and an inorganic anti-swelling agent into a low-temperature reaction kettle solid feeding device; adding the aliphatic alcohol block polyether, N-lauroyl ethylenediaminetriacetic acid, alkylphenol ethoxylates and an inorganic anti-swelling agent into a low-temperature reaction kettle, sealing the reaction kettle, filling nitrogen for purging, replacing for three times, vacuumizing, heating to 100 ℃, stopping vacuumizing, stirring for 164min under the condition of the stirring speed of 950r/min, stopping heating, and cooling to 20 ℃; maintaining for 12.5h to obtain a dialysis extracting agent crude product;
and step two, placing the crude dialysis extraction agent in a tank reactor, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water, introducing nitrogen in the whole process, stirring for 3 hours at 30 ℃ and 500r/min until the crude dialysis extraction agent is completely dissolved, and stopping introducing nitrogen to prepare the dialysis extraction agent.
Comparative example 21 combination of steps one, two and three
The preparation method of the dialysis extraction agent comprises the following steps:
adding the aliphatic alcohol block polyether, alkylphenol ethoxylate, N-lauroyl ethylenediamine triacetic acid, an organic anti-swelling agent, an inorganic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water into a tank reactor, introducing nitrogen in the whole process, stirring for 6 hours at 30 ℃ and 500r/min until the components are completely dissolved, stopping introducing nitrogen, and preparing the dialysis extraction agent.
Comparative example 22
On the basis of the example 3, the components of the dialysis extraction agent are deleted alkylphenol ethoxylates, and other conditions are consistent.
The dialysis extraction agents prepared in the above examples and comparative examples were subjected to performance measurement, and the measurement indexes include surface tension, dialysis drainage aid height, foaming volume, swelling volume, and scale inhibition. In the oil field fracturing and acid fracturing process, the standard of the index is shown in table 1.
Table 1 Performance Standard for each index
The evaluation method of the index comprises the following steps: (the volume concentration of the dialysis extraction agent is generally 0.25-0.6% in the use process, and the volume concentration of the dialysis extraction agent solution used in the evaluation is 0.5%)
1. Surface interfacial tension: the dialysis extraction agent solution is taken and the surface tension is measured by using a full-automatic surface tension meter.
2. Dialysis drainage aid height: taking 10g of dialysis extraction agent solution, pouring the solution into a cuvette, placing a capillary tube (0.3 multiplied by 10 mm) into the corresponding solution, standing for 2min, forming a certain liquid column height by self-analysis, measuring and recording the initial liquid column height, hanging the capillary tube, observing the discharge condition of the solution every 2h, and finishing observation for 10 h. The final column height of the solution in the capillary is the dialysis assist height.
3. Foaming volume: 100g of dialysis extraction agent solution is taken, the solution to be measured is respectively put into conical flasks, the stirring is carried out for 10min by using a stirrer (the rotating speed is 2500 r/min), the solution is quickly poured into a 500mL measuring cylinder after the stirring is finished, and the foam height is respectively recorded, and is the foaming volume.
4. Expansion volume: pouring a solution to be measured into a 10ml centrifuge tube, weighing 5g of bentonite (the bentonite is sodium soil, and is placed at 200 ℃ for 4 hours before experiments), adding the weighed bentonite into the centrifuge tube, shaking uniformly, standing for 2 hours, centrifuging for 15 minutes by using a centrifuge at 1500r/min, and reading the expansion volume of the bentonite.
5. Scale inhibition rate: and (3) taking a dialysis extraction agent solution, titrating a solution to be measured by using an EDTA standard solution with corresponding concentration, and calculating the scale inhibition rate of the samples of calcium carbonate, calcium sulfate and barium sulfate.
6. Enzymatic degradation rate: preparing 0.35% of guar gum base solution, and adding a cross-linking agent to form gel capable of hanging. At 170s with a six-speed viscometer -1 Determination of initial gel viscosity as mu 1 . Taking 100mL of jelly, adding dialysis extraction agent solution, placing in a water bath kettle with constant temperature of 50 ℃ for 2h, and measuring the colloid viscosity to be mu 2 . The enzyme-catalyzed degradation rate was calculated from the change in colloidal viscosity.
The dialysis extraction agents prepared in the above examples and comparative examples were measured for each performance index as shown in tables 2 to 3.
From the data, it can be seen that the two components of the aliphatic alcohol block polyether and the N-lauroyl ethylenediamine triacetic acid have great influence on indexes such as surface interfacial tension, foaming volume, barium sulfate, dialysis drainage aiding height and the like. The combined use of the aliphatic alcohol block polyether and the N-lauroyl ethylenediamine triacetic acid has better effect on indexes such as surface interfacial tension, foaming volume, barium sulfate, dialysis drainage aiding height and the like.
From the above data, it can be seen that the organic anti-swelling agent has a greater effect on the swelling volume; the inorganic anti-swelling agent has a larger influence on the swelling volume and the calcium precipitation; the pullulanase, glucose oxidase, protease and lipase have great influence on the enzyme catalytic degradation rate, and the four enzymes are combined according to the proportion of the invention, so that the pullulanase, glucose oxidase, protease and lipase have synergistic effect and better effect.
In addition, as can be seen from the data in tables 2 and 3, the present fatty alcohol block polyether, alkylphenol ethoxylate, N-lauroyl ethylenediaminetriacetic acid and the inorganic anti-swelling agent are inferior in dissolution and mixing properties, so that the present invention can improve the mixing uniformity of various raw materials in the dialysis extraction agent and bring the action effect of each raw material into an optimal state by uniformly mixing the present fatty alcohol block polyether and alkylphenol ethoxylate, adding N-lauroyl ethylenediaminetriacetic acid and the inorganic anti-swelling agent, and finally mixing with the remaining raw materials.
The dialysis extraction agents prepared in example 3 and comparative example 22 were tested for each index at a pH of 2 to 7. The results are shown in tables 4-5.
As can be seen from the data in tables 3 and 4, the addition of alkylphenol ethoxylates to the dialysis extraction agent can improve the stability and acid resistance of the dialysis extraction agent, and the dialysis extraction agent can be adapted to an environment with a pH of 2-7 and can be applied to acid pressure; however, the dialysis extraction agent is not added with alkylphenol ethoxylates, and when the pH is 6, the standard of each index of the dialysis extraction agent is already close, and when the pH is 5, the standard is already lower, so that the dialysis extraction agent can adapt to the environment with the pH of 6-7 without adding alkylphenol ethoxylates, and cannot be applied to acid pressure.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. A dialysis extraction agent, which is characterized in that: the coating comprises the following components in parts by weight: the fatty alcohol block polyether comprises, by weight, 5-15 parts of alkylphenol ethoxylates, 5-15 parts of N-lauroyl ethylenediamine triacetic acid, 5-10 parts of organic anti-swelling agents, 5-10 parts of inorganic anti-swelling agents, 5-8 parts of pullulanase, 5-8 parts of glucose oxidase, 5-8 parts of proteases, 5-8 parts of lipases and 18-58 parts of deionized water.
2. The dialysis extraction agent of claim 1, wherein: the coating comprises the following components in parts by weight: 10 parts of fatty alcohol block polyether, 6 parts of alkylphenol ethoxylates, 10 parts of N-lauroyl ethylenediamine triacetic acid, 8 parts of organic anti-swelling agents, 7 parts of inorganic anti-swelling agents, 6 parts of pullulanase, 7 parts of glucose oxidase, 6 parts of protease, 5 parts of lipase and 32 parts of deionized water.
3. The dialysis extraction agent of claim 1, wherein: the organic anti-swelling agent comprises any one or more of a biquaternary ammonium salt type surfactant, a quaternary ammonium salt type surfactant, an imidazoline salt type surfactant, dodecyl trimethyl ammonium bromide and hexadecyl trimethyl ammonium bromide.
4. The dialysis extraction agent of claim 1, wherein: the inorganic anti-swelling agent comprises any one or more of hydroxy ethylene diphosphonic acid tetrasodium salt and amino trimethylene phosphonic acid pentasodium salt.
5. A process for the preparation of a dialysis extraction agent as claimed in claim 1, comprising the steps of:
adding the aliphatic alcohol block polyether and alkylphenol ethoxylate into a reaction kettle, filling nitrogen, purging, vacuumizing, heating to 75-85 ℃, stopping vacuumizing, uniformly mixing, and cooling to 15-25 ℃ to obtain a material I;
continuously adding N-lauroyl ethylenediaminetriacetic acid and an inorganic anti-swelling agent into a reaction kettle, heating to 140-160 ℃, stirring and uniformly mixing, and keeping the temperature of the reaction kettle at 30-60 ℃ for 11-13h to obtain a material II;
and thirdly, adding an organic anti-swelling agent, pullulanase, glucose oxidase, protease, lipase and deionized water into the material II, introducing nitrogen in the whole process, and uniformly mixing at 25-35 ℃ to obtain the dialysis extraction agent.
6. The method for preparing the dialysis extraction agent as claimed in claim 5, wherein: in the first step, the aliphatic alcohol block polyether is put into a liquid constant-speed feeding device and is added into a reaction kettle, alkylphenol polyoxyethylene is put into a low-temperature reaction kettle solid feeding device and is added into the reaction kettle; in the nitrogen filling and purging process, the displacement is performed for three times; in the mixing process, the stirring speed is 800-1000r/min, and the stirring speed is 40-50min.
7. The method for preparing the dialysis extraction agent as claimed in claim 5, wherein: in the second step, the N-lauroyl ethylenediaminetriacetic acid is put into a liquid constant-speed feeding device and is added into a reaction kettle, the inorganic anti-swelling agent is put into low-temperature reaction kettle solid feeding equipment, and the inorganic anti-swelling agent is added into the reaction kettle; in the stirring and mixing process, the stirring speed is 480-550r/min, and the stirring speed is 1.8-2.5h.
8. The method for preparing the dialysis extraction agent as claimed in claim 5, wherein: in the third step, stirring is carried out for 2.8-3.3 hours under the condition of 460-550r/min in the mixing process.
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