CN112410006A - Neutral blocking remover composition for oil extraction stratum of oil field and preparation method thereof - Google Patents
Neutral blocking remover composition for oil extraction stratum of oil field and preparation method thereof Download PDFInfo
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 49
- 239000000203 mixture Substances 0.000 title claims abstract description 48
- 230000007935 neutral effect Effects 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000000605 extraction Methods 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 66
- 239000002253 acid Substances 0.000 claims abstract description 21
- -1 ethoxylated sodium alkyl sulfate Chemical class 0.000 claims abstract description 14
- 239000000176 sodium gluconate Substances 0.000 claims abstract description 14
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 13
- 229940037003 alum Drugs 0.000 claims abstract description 13
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 13
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 claims abstract description 13
- 229940070765 laurate Drugs 0.000 claims abstract description 13
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 13
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 13
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004927 clay Substances 0.000 claims abstract description 12
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims abstract description 12
- 229940005574 sodium gluconate Drugs 0.000 claims abstract description 12
- QXPLZEKPCGUWEM-UHFFFAOYSA-N 2-methylheptan-4-ol Chemical compound CCCC(O)CC(C)C QXPLZEKPCGUWEM-UHFFFAOYSA-N 0.000 claims abstract description 11
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims abstract description 11
- GVKDLCPTYCLSQW-YFKNTREVSA-N C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] Chemical compound C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] GVKDLCPTYCLSQW-YFKNTREVSA-N 0.000 claims abstract description 11
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims abstract description 11
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 11
- 238000012216 screening Methods 0.000 claims description 36
- 238000000227 grinding Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 22
- 238000004806 packaging method and process Methods 0.000 claims description 20
- 238000005303 weighing Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 12
- LPEKGGXMPWTOCB-UHFFFAOYSA-N methyl 2-hydroxypropionate Chemical compound COC(=O)C(C)O LPEKGGXMPWTOCB-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 238000011282 treatment Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 5
- 239000002518 antifoaming agent Substances 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000007281 self degradation Effects 0.000 description 2
- 235000012207 sodium gluconate Nutrition 0.000 description 2
- MSXHSNHNTORCAW-GGLLEASOSA-M sodium;(2s,3s,4s,5r,6s)-3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].O[C@H]1O[C@H](C([O-])=O)[C@@H](O)[C@H](O)[C@H]1O MSXHSNHNTORCAW-GGLLEASOSA-M 0.000 description 2
- AOJJSUZBOXZQNB-VTZDEGQISA-N 4'-epidoxorubicin Chemical group O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@@H](O)[C@H](C)O1 AOJJSUZBOXZQNB-VTZDEGQISA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 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
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
- C09K8/532—Sulfur
-
- 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
- C09K2208/20—Hydrogen sulfide elimination
-
- 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
Abstract
The invention discloses a neutral blocking remover composition for an oil extraction stratum of an oil field and a preparation method thereof, wherein the composition comprises the following raw materials in parts by weight: 30-35 parts of acrylic acid-methyl acrylate copolymer, 44-50 parts of diethyltriaminepentaacetic acid, 30-35 parts of polyepoxysuccinic acid, 10-14 parts of sodium allylsulfonate, 10-14 parts of hydrolyzed polyacrylamide, 12-17 parts of adsorption clay, 7-10 parts of sodium lignosulfonate, 5-8 parts of diploic acid, 5-8 parts of di-sec-octyl maleate sodium sulfonate, 9-12 parts of 2-methyl hydroxypropionate, 0.2-0.3 part of alum anhydride, 0.1-0.3 part of 2, 6-methyl-4-heptanol, 18-25 parts of D-sodium gluconate, 2-4 parts of trihydroxy triethylamine, 7-10 parts of ethoxylated sodium alkyl sulfate and 0.1-0.3 part of polyethylene glycol laurate. According to the neutral blocking remover composition for the oil extraction stratum of the oil field and the preparation method thereof, polyethylene glycol laurate is used as a defoaming agent, and foam caused by a surfactant is effectively eliminated when cleaning and deblocking are carried out, so that the blocking removal efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of blocking remover, and particularly relates to a neutral blocking remover composition for an oil extraction stratum of an oil field and a preparation method thereof.
Background
Petroleum is strategic material related to economic life of China, in China, the stable production technology for developing medium-high permeability oil reservoirs is relatively mature, but how to realize continuous stable production of old wells for low-permeability and ultra-low permeability oil reservoirs and obtain higher final recovery and economic benefits is a great challenge facing a plurality of oil fields in China, the application of the ternary combination flooding oil extraction technology greatly delays the speed of decrement of the yield of each large oil field in China, the ternary combination flooding oil extraction technology becomes a main measure for replacing the yield of the oil fields, the effects of clay hydration (mineral expansion and migration), oil-water emulsification, wetting reverse phase and the like are generated due to unmatched liquid entry and solid particle invasion in the processes of drilling, perforating, oil extraction, yield increase measures and well workover, heavy components such as colloid, asphaltene and wax are condensed and accumulated due to the change of environmental conditions, and salt scale can be formed at the throat of an oil well (CaCO3, CaCo, CaSO4, BaSO4, etc.), organic fouling and fouling interaction plugs, plugging of the near wellbore area of the well can cause reduced oil production and even production stoppage, and therefore, a de-plugging descaling product is required to eliminate the adverse effects.
The blocking remover in the prior art has no self-degradability and corrosivity in the use process, is easy to generate precipitation and secondary precipitate particles to block capillary tubes in the use process, thereby causing the influences of well blocking and the like, and has poor operation safety and reliability.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a neutral blocking remover composition for an oil extraction stratum of an oil field, so as to solve the problem that the prior art is easy to generate precipitates and secondary precipitate particles to block capillary tubes in the using process, thereby causing well blocking.
The second object of the present invention is to provide a process for the preparation of the above composition.
In order to achieve the purpose, the invention provides the following technical scheme: the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following raw materials in parts by weight: 30-35 parts of acrylic acid-methyl acrylate copolymer, 44-50 parts of diethyltriaminepentaacetic acid, 30-35 parts of polyepoxysuccinic acid, 10-14 parts of sodium allylsulfonate, 10-14 parts of hydrolyzed polyacrylamide, 12-17 parts of adsorption clay, 7-10 parts of sodium lignosulfonate, 5-8 parts of diploic acid, 5-8 parts of di-sec-octyl maleate sodium sulfonate, 9-12 parts of 2-methyl hydroxypropionate, 0.2-0.3 part of alum anhydride, 0.1-0.3 part of 2, 6-methyl-4-heptanol, 18-25 parts of D-sodium gluconate, 2-4 parts of trihydroxy triethylamine, 7-10 parts of ethoxylated sodium alkyl sulfate and 0.1-0.3 part of polyethylene glycol laurate.
The preparation method of the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following steps:
s1, preparation of a first raw material: weighing acrylic acid-methyl acrylate copolymer, diethyltriamine pentaacetic acid, polyepoxysuccinic acid and sodium allylsulfonate in sequence according to the weight parts, putting the mixture into a first grinding machine, grinding, and screening to obtain a first raw material for later use;
s2, preparation of a raw material II: sequentially weighing hydrolyzed polyacrylamide, adsorption clay, sodium lignosulfonate, diploic acid and di-sec-octyl maleate sodium sulfonate according to the weight parts, putting the mixture into a second grinding machine, grinding, and screening to obtain a second raw material for later use;
s3, preparation of a raw material III: sequentially weighing the alum anhydride, the D-sodium gluconate, the trihydroxy triethylamine, the ethoxylated alkyl sodium sulfate and the polyethylene glycol laurate in parts by weight, putting the weighed materials into a third grinding machine, grinding, and screening to obtain a required third raw material for later use;
s4, preparing a mixed material: respectively adding the raw material I prepared in the step S1, the raw material II prepared in the step S2 and the raw material III prepared in the step S3 into a stirrer, and uniformly stirring and mixing to obtain a required mixed material;
s5, addition of additives: adding the methyl 2-hydroxypropionate and the 2, 6-methyl-4-heptanol into the stirrer in the step S4, mixing again, and uniformly stirring to obtain the required blocking remover composition;
s6, packaging: and (5) placing the blocking remover composition prepared in the step (S5) into a full-automatic packaging machine for aluminum packaging treatment, weighing, packaging in large bags, and warehousing for storage to obtain the required neutral blocking remover composition.
And screening the crushed raw materials in the step S1 through a screening net of 20-40 meshes.
And screening the crushed raw material II in the step S2 by a screening net with 25-35 meshes.
And screening the crushed raw material III in the step S3 by using a screening net with 20-30 meshes.
The rotation speed of the stirrer in the step S4 is 3000-4000rpm, and the time is 5-8 min.
Compared with the prior art, the neutral blocking remover composition for the oil extraction stratum of the oil field and the preparation method thereof provided by the invention have the following beneficial effects:
1. according to the neutral blocking remover composition for the oil extraction stratum of the oil field, under the combined action of the acrylic acid-methyl acrylate copolymer and the diethyltriaminepentaacetic acid, after the blocking removal operation is completed, the pollution of a water body cannot be caused, and meanwhile, the self-degradation effect is achieved.
2. The neutral blocking remover prepared by the preparation method has a good dissolving effect when the neutral blocking remover is used for cleaning and removing the blocking of the oil field stratum under the combined action of the sodium lignosulfonate and the ethoxylated alkyl sodium sulfate, can well absorb carbon dioxide and hydrogen sulfide gas of the stratum, and can have a strong cleaning capability on asphaltic colloid in the oil field stratum under the action of the methyl 2-hydroxypropionate and the alum anhydride.
Detailed Description
The present invention will be described in further detail with reference to examples.
The first embodiment is as follows: the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following raw materials in parts by weight: 30 parts of acrylic acid-methyl acrylate copolymer, 44 parts of diethyltriaminepentaacetic acid, 30 parts of polyepoxysuccinic acid, 10 parts of sodium allylsulfonate, 10 parts of hydrolyzed polyacrylamide, 12 parts of adsorption clay, 7 parts of sodium lignosulfonate, 5 parts of diacids, 5 parts of di-sec-octyl maleate sodium sulfonate, 9 parts of 2-methyl hydroxypropionate, 0.2 part of alum anhydride, 0.1 part of 2, 6-methyl-4-heptanol, 18 parts of D-sodium gluconate, 2 parts of trihydroxy triethylamine, 7 parts of ethoxylated alkyl sodium sulfate and 0.1 part of polyethylene glycol laurate.
The preparation method of the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following steps:
s1, preparation of a first raw material: weighing acrylic acid-methyl acrylate copolymer, diethyltriamine pentaacetic acid, polyepoxysuccinic acid and sodium allylsulfonate in sequence according to the weight parts, putting the mixture into a first grinding machine, grinding, screening after grinding to obtain a first raw material for later use, and screening the first raw material through a 20-mesh screening net;
s2, preparation of a raw material II: sequentially weighing hydrolyzed polyacrylamide, adsorption clay, sodium lignosulfonate, diploic acid and di-sec-octyl maleate sodium sulfonate according to the weight parts, putting the mixture into a second grinding machine, grinding, and screening to obtain a second raw material for later use, wherein the second ground raw material is screened by a 25-mesh screening net;
s3, preparation of a raw material III: sequentially weighing the alum anhydride, the D-sodium gluconate, the trihydroxy triethylamine, the ethoxylated alkyl sodium sulfate and the polyethylene glycol laurate in parts by weight, putting the weighed materials into a third grinding machine, grinding the materials, screening the ground materials to obtain a required third raw material for later use, and screening the ground third raw material through a screening net with 20 meshes;
s4, preparing a mixed material: respectively adding the raw material I prepared in the step S1, the raw material II prepared in the step S2 and the raw material III prepared in the step S3 into a stirrer, uniformly stirring and mixing to obtain a required mixed material, wherein the rotating speed of the stirrer is 3000rpm, and the time is 5 min;
s5, addition of additives: adding the methyl 2-hydroxypropionate and the 2, 6-methyl-4-heptanol into the stirrer in the step S4, mixing again, and uniformly stirring to obtain the required blocking remover composition;
s6, packaging: and (5) placing the blocking remover composition prepared in the step (S5) into a full-automatic packaging machine for aluminum packaging treatment, weighing, packaging in large bags, and warehousing for storage to obtain the required neutral blocking remover composition.
Example two: the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following raw materials in parts by weight: 32 parts of acrylic acid-methyl acrylate copolymer, 47 parts of diethyltriaminepentaacetic acid, 33 parts of polyepoxysuccinic acid, 12 parts of sodium allylsulfonate, 12 parts of hydrolyzed polyacrylamide, 14 parts of adsorption clay, 8 parts of sodium lignosulfonate, 7 parts of diacids, 6 parts of di-sec-octyl maleate sodium sulfonate, 10 parts of 2-methyl hydroxypropionate, 0.25 part of alum anhydride, 0.2 part of 2, 6-methyl-4-heptanol, 22 parts of sodium D-gluconate, 3 parts of trihydroxy triethylamine, 8 parts of ethoxylated alkyl sodium sulfate and 0.2 part of polyethylene glycol laurate.
The second preparation method of the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following steps:
s1, preparation of a first raw material: weighing acrylic acid-methyl acrylate copolymer, diethyltriamine pentaacetic acid, polyepoxysuccinic acid and sodium allylsulfonate in sequence according to the weight parts, putting the mixture into a first grinding machine, grinding, screening after grinding to obtain a first raw material for later use, and screening the first raw material through a 30-mesh screening net;
s2, preparation of a raw material II: weighing hydrolyzed polyacrylamide, adsorption clay, sodium lignosulfonate, diploic acid and di-sec-octyl maleate sodium sulfonate in parts by weight in sequence, putting the mixture into a second grinding machine, grinding, and screening to obtain a second raw material for later use, wherein the second ground raw material is screened by a 30-mesh screening net;
s3, preparation of a raw material III: sequentially weighing the alum anhydride, the D-sodium gluconate, the trihydroxy triethylamine, the ethoxylated alkyl sodium sulfate and the polyethylene glycol laurate in parts by weight, putting the weighed materials into a third grinding machine, grinding the materials, screening the ground materials to obtain a required third raw material for later use, and screening the ground third raw material through a 25-mesh screening net;
s4, preparing a mixed material: respectively adding the raw material I prepared in the step S1, the raw material II prepared in the step S2 and the raw material III prepared in the step S3 into a stirrer, uniformly stirring and mixing to obtain a required mixed material, wherein the rotation speed of the stirrer is 3500rpm, and the time is 6 min;
s5, addition of additives: adding the methyl 2-hydroxypropionate and the 2, 6-methyl-4-heptanol into the stirrer in the step S4, mixing again, and uniformly stirring to obtain the required blocking remover composition;
s6, packaging: and (5) placing the blocking remover composition prepared in the step (S5) into a full-automatic packaging machine for aluminum packaging treatment, weighing, packaging in large bags, and warehousing for storage to obtain the required neutral blocking remover composition.
Example three: the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following raw materials in parts by weight: 35 parts of acrylic acid-methyl acrylate copolymer, 50 parts of diethyltriaminepentaacetic acid, 35 parts of polyepoxysuccinic acid, 14 parts of sodium allylsulfonate, 14 parts of hydrolyzed polyacrylamide, 17 parts of adsorption clay, 10 parts of sodium lignosulfonate, 8 parts of diploic acid, 8 parts of di-sec-octyl maleate sodium sulfonate, 12 parts of 2-methyl hydroxypropionate, 0.3 part of alum anhydride, 0.3 part of 2, 6-methyl-4-heptanol, 25 parts of sodium D-gluconate, 4 parts of trihydroxy triethylamine, 10 parts of ethoxylated alkyl sodium sulfate and 00.3 parts of polyethylene glycol laurate.
The preparation method of the neutral blocking remover composition for the oil extraction stratum of the oil field comprises the following steps:
s1, preparation of a first raw material: weighing acrylic acid-methyl acrylate copolymer, diethyltriamine pentaacetic acid, polyepoxysuccinic acid and sodium allylsulfonate in sequence according to the weight parts, putting the mixture into a first grinding machine, grinding, screening after grinding to obtain a first raw material for later use, and screening the first raw material through a screening net of 40 meshes;
s2, preparation of a raw material II: sequentially weighing hydrolyzed polyacrylamide, adsorption clay, sodium lignosulfonate, diploic acid and di-sec-octyl maleate sodium sulfonate according to the weight parts, putting the mixture into a second grinding machine, grinding, and screening to obtain a second raw material for later use, wherein the second ground raw material is screened by a 35-mesh screening net;
s3, preparation of a raw material III: sequentially weighing the alum anhydride, the D-sodium gluconate, the trihydroxy triethylamine, the ethoxylated alkyl sodium sulfate and the polyethylene glycol laurate in parts by weight, putting the weighed materials into a third grinding machine, grinding the materials, screening the ground materials to obtain a required third raw material for later use, and screening the ground third raw material through a 30-mesh screening net;
s4, preparing a mixed material: respectively adding the raw material I prepared in the step S1, the raw material II prepared in the step S2 and the raw material III prepared in the step S3 into a stirrer, uniformly stirring and mixing to obtain a required mixed material, wherein the rotating speed of the stirrer is 4000rpm, and the time is 8 min;
s5, addition of additives: adding the methyl 2-hydroxypropionate and the 2, 6-methyl-4-heptanol into the stirrer in the step S4, mixing again, and uniformly stirring to obtain the required blocking remover composition;
s6, packaging: and (5) placing the blocking remover composition prepared in the step (S5) into a full-automatic packaging machine for aluminum packaging treatment, weighing, packaging in large bags, and warehousing for storage to obtain the required neutral blocking remover composition.
And (4) judging the standard: through comparison of the three embodiments, the best effect is the second embodiment, so that the second embodiment is selected as the best embodiment, and the specific change of the amount also belongs to the protection scope of the technical scheme.
The invention has the beneficial effects that: according to the neutral blocking remover composition for the oil extraction stratum of the oil field and the preparation method thereof, under the combined action of acrylic acid-methyl acrylate copolymer and diethyltriaminepentaacetic acid, after the blocking removal operation is completed, the pollution of a water body cannot be caused, and meanwhile, the self-degradation effect is achieved, the addition of polyepoxysuccinic acid and D-sodium gluconate has a good corrosion inhibition effect, so that the effect of protecting oil extraction equipment is achieved, meanwhile, the D-sodium gluconate is a polyhydroxy carboxylic acid type scale remover, and the good solubilization effect is achieved under the combined action of the D-sodium gluconate and trihydroxy triethylamine, so that the influences of well blocking and the like caused by the fact that the existing blocking remover is easy to generate precipitates and secondary precipitate particles block capillary phenomena in the using process are solved, and the safety in the operation process is improved; the neutral blocking remover prepared by the invention has good dissolving effect when cleaning and unblocking an oil field stratum under the combined action of sodium lignosulfonate and ethoxylated alkyl sodium sulfate, can well absorb carbon dioxide and hydrogen sulfide gas of the stratum, and can be used for effectively removing foam caused by a surfactant when cleaning and unblocking asphalt-like colloid in the oil field stratum under the action of 2-methyl hydroxypropionate and alum anhydride, and the polyethylene glycol laurate is used as a defoaming agent, so that the unblocking efficiency and the unblocking effect are improved.
Claims (6)
1. The neutral blocking remover composition for the oil extraction stratum of the oil field is characterized by comprising the following raw materials in parts by weight: 30-35 parts of acrylic acid-methyl acrylate copolymer, 44-50 parts of diethyltriaminepentaacetic acid, 30-35 parts of polyepoxysuccinic acid, 10-14 parts of sodium allylsulfonate, 10-14 parts of hydrolyzed polyacrylamide, 12-17 parts of adsorption clay, 7-10 parts of sodium lignosulfonate, 5-8 parts of diploic acid, 5-8 parts of di-sec-octyl maleate sodium sulfonate, 9-12 parts of 2-methyl hydroxypropionate, 0.2-0.3 part of alum anhydride, 0.1-0.3 part of 2, 6-methyl-4-heptanol, 18-25 parts of D-sodium gluconate, 2-4 parts of trihydroxy triethylamine, 7-10 parts of ethoxylated sodium alkyl sulfate and 0.1-0.3 part of polyethylene glycol laurate.
2. A method for preparing the neutral blocking remover composition for an oil recovery formation of an oil field according to claim 1, which comprises the following steps:
s1, preparation of a first raw material: weighing acrylic acid-methyl acrylate copolymer, diethyltriamine pentaacetic acid, polyepoxysuccinic acid and sodium allylsulfonate in sequence according to the weight parts, putting the mixture into a first grinding machine, grinding, and screening to obtain a first raw material for later use;
s2, preparation of a raw material II: sequentially weighing hydrolyzed polyacrylamide, adsorption clay, sodium lignosulfonate, diploic acid and di-sec-octyl maleate sodium sulfonate according to the weight parts, putting the mixture into a second grinding machine, grinding, and screening to obtain a second raw material for later use;
s3, preparation of a raw material III: sequentially weighing the alum anhydride, the D-sodium gluconate, the trihydroxy triethylamine, the ethoxylated alkyl sodium sulfate and the polyethylene glycol laurate in parts by weight, putting the weighed materials into a third grinding machine, grinding, and screening to obtain a required third raw material for later use;
s4, preparing a mixed material: respectively adding the raw material I prepared in the step S1, the raw material II prepared in the step S2 and the raw material III prepared in the step S3 into a stirrer, and uniformly stirring and mixing to obtain a required mixed material;
s5, addition of additives: adding the methyl 2-hydroxypropionate and the 2, 6-methyl-4-heptanol into the stirrer in the step S4, mixing again, and uniformly stirring to obtain the required blocking remover composition;
s6, packaging: and (5) placing the blocking remover composition prepared in the step (S5) into a full-automatic packaging machine for aluminum packaging treatment, weighing, packaging in large bags, and warehousing for storage to obtain the required neutral blocking remover composition.
3. The method of claim 2, wherein the crushed raw material of step S1 is screened through a screen of 20-40 mesh.
4. The method for preparing the neutral blocking remover composition for the oil recovery stratum of the oil field as claimed in claim 2, wherein the crushed raw material in the step S2 is screened by passing through a 25-35 mesh screen.
5. The method for preparing the neutral blocking remover composition for the oil recovery stratum of the oil field as claimed in claim 2, wherein the crushed raw material obtained in step S3 is screened through a screen of 20-30 meshes.
6. The method as claimed in claim 2, wherein the rotation speed of the stirrer in step S4 is 3000-4000rpm for 5-8 min.
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| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN104293333A (en) * | 2014-09-23 | 2015-01-21 | 兰州熙瑞化工科技有限公司 | Neutral blocking remover composition for oilfield oil extraction and preparation method thereof |
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| WO2009010932A2 (en) * | 2007-07-17 | 2009-01-22 | Schlumberger Canada Limited | Preparing a hydratable polymer concentrate for well treatment applications |
| CN104673268A (en) * | 2015-02-13 | 2015-06-03 | 甘肃黑马石化工程有限公司 | Neutral fracturing fluid composition in oil extraction floor layer of oil field and preparation method of neutral fracturing fluid composition |
| CN109057753B (en) * | 2018-08-13 | 2020-05-05 | 北京峦海阜程科技发展有限责任公司 | Oil well blockage removing method |
| CN109439302A (en) * | 2018-12-06 | 2019-03-08 | 西安胜特油田技术服务有限责任公司 | A kind of preparation and technique of oil field neutral de-plugging agent |
| CN109575894B (en) * | 2018-12-29 | 2020-04-21 | 黑龙江益瑞化工有限公司 | Neutral blocking remover for chemical oil extraction in oil field and preparation method thereof |
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| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN104293333A (en) * | 2014-09-23 | 2015-01-21 | 兰州熙瑞化工科技有限公司 | Neutral blocking remover composition for oilfield oil extraction and preparation method thereof |
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