CN114437697A - Solid foam drainage agent with corrosion inhibition function and preparation method thereof - Google Patents
Solid foam drainage agent with corrosion inhibition function and preparation method thereof Download PDFInfo
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- CN114437697A CN114437697A CN202210094881.2A CN202210094881A CN114437697A CN 114437697 A CN114437697 A CN 114437697A CN 202210094881 A CN202210094881 A CN 202210094881A CN 114437697 A CN114437697 A CN 114437697A
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- solid
- corrosion inhibitor
- foam drainage
- corrosion inhibition
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- 238000005260 corrosion Methods 0.000 title claims abstract description 119
- 230000007797 corrosion Effects 0.000 title claims abstract description 119
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 55
- 239000008259 solid foam Substances 0.000 title claims abstract description 37
- 239000013051 drainage agent Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 59
- 239000007787 solid Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007863 gel particle Substances 0.000 claims abstract description 41
- 239000006260 foam Substances 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 claims abstract description 26
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 11
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 22
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 20
- 239000000499 gel Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 18
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 239000003999 initiator Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000010413 mother solution Substances 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 9
- 229960003237 betaine Drugs 0.000 claims description 9
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 8
- 239000004202 carbamide Substances 0.000 claims description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- BJEBSDPKCMJMEJ-UHFFFAOYSA-N 3-(dodecanoylamino)propyl-oxidoazanium Chemical compound CCCCCCCCCCCC(=O)NCCC[NH2+][O-] BJEBSDPKCMJMEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 6
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 6
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 6
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 229940031728 cocamidopropylamine oxide Drugs 0.000 claims description 5
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 5
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 4
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000003368 amide group Chemical group 0.000 claims description 4
- MRUAUOIMASANKQ-UHFFFAOYSA-O carboxymethyl-[3-(dodecanoylamino)propyl]-dimethylazanium Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC(O)=O MRUAUOIMASANKQ-UHFFFAOYSA-O 0.000 claims description 4
- -1 imidazoline quaternary ammonium salt Chemical class 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 229940075468 lauramidopropyl betaine Drugs 0.000 claims description 4
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000176 sodium gluconate Substances 0.000 claims description 4
- 229940005574 sodium gluconate Drugs 0.000 claims description 4
- 235000012207 sodium gluconate Nutrition 0.000 claims description 4
- 108010010803 Gelatin Proteins 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 claims description 3
- 229940073507 cocamidopropyl betaine Drugs 0.000 claims description 3
- 239000008273 gelatin Substances 0.000 claims description 3
- 229920000159 gelatin Polymers 0.000 claims description 3
- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- 235000019794 sodium silicate Nutrition 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 18
- 239000003795 chemical substances by application Substances 0.000 abstract description 13
- 238000007599 discharging Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000004090 dissolution Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- 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
- C09K8/92—Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
-
- 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
- C09K8/92—Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
- C09K8/94—Foams
-
- 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
- C09K2208/06—Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a solid foam water discharging agent with a corrosion inhibition function and a preparation method thereof, wherein the solid foam water discharging agent comprises the following components in percentage by mass: 1-10% of solid corrosion inhibitor gel particles, 30-60% of effective components of foam drainage, 2-30% of solid filler and 0-2% of adhesive, wherein the sum of the components is 100%, the solid corrosion inhibitor gel particles are added into the solid foam drainage agent, the dissolution of the gel particles can increase the viscosity of accumulated liquid at the bottom of a well, so that the foam is more stable, the water content and the foam strength are obviously enhanced, and the drainage and gas recovery effects of the foam drainage agent are enhanced; the addition steps are greatly reduced, the bottom hole accumulated liquid of the gas well cannot be increased, the stable production of the gas well is facilitated, the surface activity of the foam drainage agent has a cleaning effect on the metal surface in the well, an adsorption film of the imidazoline corrosion inhibitor on the metal surface is facilitated, the water solubility of the imidazoline corrosion inhibitor is obviously improved, and the synergistic effects obviously improve the corrosion inhibition effect of the imidazoline corrosion inhibitor.
Description
Technical Field
The invention belongs to the technical field of petrochemical industry, and particularly relates to a solid foam drainage agent with a corrosion inhibition function and a preparation method thereof.
Background
After a gas well is produced for a period of time, liquid accumulation and sand production problems of a certain degree are generated, the problems of water logging, blockage and the like of the gas well are caused, the yield is influenced, and even the gas well is stopped. The foam drainage method is a main method for solving the problems of water logging and sand burying of the gas well at present, the main medicament used by the foam drainage method is a foam drainage agent, and the solid foam drainage agent gradually becomes a main product used on the spot of the gas well. A number of solid foam drainage agent patents have been disclosed (CN106190080B, CN106753303B, CN107573917B, etc.), which include the following features: different products have the characteristics of good temperature resistance, hypersalinity resistance and condensate oil resistance, and the foaming performance and the liquid carrying capacity reach higher levels.
In the process of gas well exploitation, metal parts such as a casing and an oil pipe in a well are corroded by fluid in the wellbore to different degrees, including but not limited to H2S corrosion, CO2 corrosion, dissolved oxygen corrosion, formation water corrosion with high chloride ion concentration and the like; the method is a common means for various large oil fields by adding a liquid corrosion inhibitor to slow down the corrosion of a pipe column and equipment. Because the liquid corrosion inhibitor has the defects of short single-time adding period, well mouth adding, difficult reaching of effective components to the well bottom, large consumption and the like in the using process, solid particle corrosion inhibitors aiming at the defects are proposed and developed, and a plurality of patents of solid corrosion inhibitors are disclosed at present (CN111073618A, CN1912188, CN103937477A, CN104099075B, CN104480473B and CN109554714B), and the liquid corrosion inhibitor has the characteristics that: the slow-release corrosion inhibitor can uniformly and slowly release effective components, has long release period, adjustable density, high softening point, high temperature resistance and simple adding process, and can obtain a long-term corrosion inhibition effect.
In the process of field use, the solid foam drainage agent and the liquid corrosion inhibitor are used in a matching mode, the dosing business is contracted to technical service units, different service units often bear the dosing work of different agents, the operation cost is high, and the foam drainage agent and the corrosion inhibitor cannot be used in a synergistic mode.
In the process of field use, the solid foam water discharging agent and the liquid corrosion inhibitor are added in batches and in sections when used on the field, so that the problems of high operation cost and incapability of synergistic use are caused. The solid foam water discharging agent meets the general requirements of foam water discharging, has the effect of a corrosion inhibitor, and has the characteristic of slow release of corrosion inhibition components.
Disclosure of Invention
The invention aims to provide a solid foam drainage agent with a corrosion inhibition function and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a solid foam drainage agent with a corrosion inhibition function comprises the following components in percentage by mass: 1-10% of solid corrosion inhibitor gel particles, 30-60% of effective components of foam drainage, 2-30% of solid filler and 0-2% of adhesive, wherein the sum of the components is 100%.
Preferably, the solid corrosion inhibitor gel particles comprise the following components in percentage by mass: 1-60% of corrosion inhibition effective component, 1-25% of main component of gel skeleton, 0-0.5% of cross-linking agent, 0-0.01% of initiator and 1-40% of water.
Preferably, the foam drainage effective component is one or more of cocamidopropyl amine oxide, cocamidopropyl betaine, lauramidopropyl ammonium oxide, lauramidopropyl betaine, cocoimidazoline betaine and fatty alcohol-polyoxyethylene ether sulfate.
Preferably, the solid filler is one or more of starch, urea, sodium gluconate and sodium silicate.
Preferably, the adhesive is one or more of hydroxypropyl methylcellulose, gelatin and polyethylene glycol.
Preferably, the effective corrosion inhibition component in the solid corrosion inhibitor gel particles is one or more of naphthenic imidazole, polyoxyethylene ether, imidazoline quaternary ammonium salt, naphthenic acid imidazoline betaine, rosin-based imidazoline and amido alkyl imidazoline; the gel skeleton in the solid corrosion inhibitor gel particles is mainly acrylamide.
Preferably, the main component of the cross-linking agent in the solid corrosion inhibitor gel particles is one or more of 2-acrylamide-2-methylpropanesulfonic acid, N-methylene bisacrylamide, chromium acetate, potassium dichromate and thiourea; the initiator in the solid corrosion inhibitor gel particles is one or more of ammonium persulfate, sodium bisulfite and potassium persulfate.
A preparation method of a solid foam drainage agent with a corrosion inhibition function,
(1) synthesizing solid corrosion inhibitor gel particles:
weighing the following components in proportion: 1-25% of acrylamide, 1-60% of effective corrosion inhibition components, 1-50% of water, 0-0.5% of cross-linking agent and 0-0.01% of initiator, wherein the sum of the components is 100%, adding the effective corrosion inhibition components into water, stirring for more than 20min to obtain an aqueous solution of the effective corrosion inhibition components, slowly scattering acrylamide powder into the aqueous solution of the effective corrosion inhibition components, stirring for more than 30min until acrylamide particles are completely dissolved to obtain a gel mother solution, adding the cross-linking agent and the initiator into the gel mother solution, stirring until the acrylamide particles are completely dissolved, reacting in a water bath kettle at 65 ℃ for 3-6h, aging at room temperature for 1-3h, crushing the obtained gel to obtain solid corrosion inhibitor gel particles, and adjusting the size of the particles by a crushing step;
(2) preparing a solid foam drainage agent:
weighing the following components in proportion: 1-20% of solid corrosion inhibitor gel particles, 30-50% of effective foam drainage ingredients, 2-50% of solid filler and 0-2% of adhesive, wherein the sum of the components is 100%, and when the adhesive is not equal to 0 part, the solid corrosion inhibitor gel particles, the effective foam drainage ingredients and the solid filler are uniformly mixed to obtain a mixture; adding water into the adhesive until the adhesive is completely dissolved to obtain an adhesive solution; uniformly mixing the obtained mixture and a binder solution, and pressing and molding in a mold, wherein the shape comprises but is not limited to a rod shape, a spherical shape, a conical shape, a spindle shape and the like; when the adhesive is equal to 0 part, uniformly mixing the solid corrosion inhibitor gel particles, the foam drainage effective component and the solid filler to obtain a mixture; and pressing the mixture in a mold to form shapes including but not limited to rods, spheres, cones and spindles.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the solid corrosion inhibitor gel particles are added into the solid foam drainage agent, and the dissolution of the gel particles can increase the viscosity of accumulated liquid at the bottom of a well, so that the foam is more stable, the water content and the foam strength are obviously enhanced, and the drainage and gas recovery effects of the foam drainage agent are enhanced; the solid corrosion inhibitor gel particles are used as corrosion inhibition effective components in the foam water discharging agent, compared with a liquid corrosion inhibitor, the adding steps are greatly reduced, the bottom hole accumulated liquid of a gas well cannot be increased, the stable production of the gas well is facilitated, the surface activity of the foam water discharging agent has a cleaning effect on the metal surface in the well, an adsorption film of an imidazoline corrosion inhibitor on the metal surface is facilitated, the water solubility of the imidazoline corrosion inhibitor is obviously improved, and the synergistic effects obviously improve the corrosion inhibition effect of the imidazoline corrosion inhibitor.
And meanwhile, when the foam rises along the shaft, the corrosion inhibition components dissolved in the foam liquid also rise simultaneously, and the viscosity of accumulated liquid at the bottom of the well is increased after the gel is dissolved, so that the accumulated liquid is more easily adsorbed on the metal surface, the corrosion inhibition protection is provided for the part, which is not flooded, at the upper end of the shaft of the gas well, and the corrosion inhibition of hydrogen sulfide and carbon dioxide at the upper end of the shaft can be realized.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a solid foam water discharging agent with a corrosion inhibition function for a gas well, namely model RX-PPG-1, comprises the following steps:
(1) synthesizing solid corrosion inhibitor gel particles:
weighing the following components in proportion: 20% of acrylamide, 20% of a corrosion inhibition effective component naphthenic imidazole lin, 20% of a corrosion inhibition effective component polyoxyethylene ether, 39.5% of water, 0.3% of cross-linking agent N, N-methylene bisacrylamide, 0.19% of cross-linking agent 2-acrylamide-2-methylpropanesulfonic acid, and 0.01% of initiator ammonium persulfate, wherein the sum of the components is 100%. Adding naphthenic imidazole and polyoxyethylene ether serving as corrosion inhibition active ingredients into water, dissolving and stirring for 20min to obtain a corrosion inhibition active ingredient aqueous solution, slowly scattering acrylamide powder into the corrosion inhibition active ingredient aqueous solution, stirring for more than 30min until acrylamide particles are completely dissolved to obtain a gel mother solution, adding 2-acrylamide-2-methylpropanesulfonic acid serving as a cross-linking agent, N-methylenebisacrylamide and ammonium persulfate serving as an initiator into the gel mother solution, stirring until the acrylamide particles are completely dissolved, reacting for 3h in a 65 ℃ water bath kettle, aging for 1h at room temperature, crushing the obtained gel to obtain solid corrosion inhibitor gel particles, wherein the size of the particles can pass through a 100-mesh screen.
(2) Preparing a solid foam drainage agent:
weighing the following components in proportion: the preparation method comprises the following steps of uniformly mixing 10% of solid corrosion inhibitor gel particles, 20% of cocamidopropyl amine oxide, 20% of fatty alcohol-polyoxyethylene ether sulfate, 10% of lauramidopropyl ammonium oxide, 20% of starch, 19% of urea and 1% of hydroxypropyl methyl cellulose serving as a binder, wherein the sum of the components is 100%, and uniformly mixing the solid corrosion inhibitor gel particles, the cocamidopropyl amine oxide, the fatty alcohol-polyoxyethylene ether sulfate, the lauramidopropyl ammonium oxide, the starch and the urea to obtain a mixture; adding water into hydroxypropyl methyl cellulose serving as an adhesive until the hydroxypropyl methyl cellulose is completely dissolved to obtain an adhesive solution; and uniformly mixing the obtained mixture and the adhesive solution, stirring for 1h, and pressing into a rod-shaped PPG-1 solid foam drainage agent in a mold.
Example 2
A preparation method of a solid foam water discharging agent with a corrosion inhibition function for a gas well, namely model RX-PPG-2, comprises the following steps:
(1) synthesizing solid corrosion inhibitor gel particles:
weighing the following components in proportion: 20% of acrylamide, 10% of imidazoline quaternary ammonium salt serving as an effective corrosion inhibition component, 30% of rosinyl imidazoline serving as an effective corrosion inhibition component, 39.5% of water, 0.1% of thiourea serving as a cross-linking agent, 0.39% of 2-acrylamide-2-methylpropanesulfonic acid serving as a cross-linking agent, 0.01% of ammonium persulfate serving as an initiator and 100% of the sum of the components. Adding imidazoline quaternary ammonium salt and rosinyl imidazoline which are corrosion inhibition effective components into water, dissolving and stirring for 40min to obtain a corrosion inhibition effective component aqueous solution, slowly scattering acrylamide powder into the corrosion inhibition effective component aqueous solution, stirring for 60min until acrylamide particles are completely dissolved to obtain a gel mother solution, adding thiourea which is a cross-linking agent, 2-acrylamide-2-methylpropanesulfonic acid and ammonium persulfate which is an initiator into the gel mother solution, stirring until the acrylamide particles are completely dissolved, reacting for 6h in a 65 ℃ water bath kettle, aging for 3h at room temperature, crushing the obtained gel to obtain solid corrosion inhibitor gel particles, wherein the size of the particles can pass through a 100-mesh screen.
(2) Preparing a solid foam drainage agent:
weighing the following components in proportion: the preparation method comprises the following steps of uniformly mixing 15% of solid corrosion inhibitor gel particles, 20% of cocamidopropyl betaine, 20% of lauramidopropyl ammonium oxide, 10% of coco imidazoline betaine, 10% of sodium silicate, 24% of urea and 1% of adhesive gelatin, wherein the sum of the components is 100%, and uniformly mixing the solid corrosion inhibitor gel particles, the cocamidopropyl amine oxide, fatty alcohol-polyoxyethylene ether sulfate, the lauramidopropyl ammonium oxide, the starch and the urea to obtain a mixture; adding water into hydroxypropyl methyl cellulose as adhesive to dissolve completely to obtain adhesive solution; and uniformly mixing the obtained mixture and the adhesive solution, stirring for 1h, and pressing into a rod-shaped PPG-2 solid foam drainage agent in a mould.
Example 3
A preparation method of a solid foam water discharging agent with a corrosion inhibition function for a gas well, namely model RX-PPG-3, comprises the following steps:
(1) synthesizing solid corrosion inhibitor gel particles:
weighing the following components in proportion: 20% of acrylamide, 10% of naphthenic acid imidazoline betaine serving as an effective corrosion inhibition component, 30% of amido alkyl imidazoline serving as an effective corrosion inhibition component, 39.5% of water, 0.3% of N, N-methylene bisacrylamide serving as a cross-linking agent, 0.19% of 2-acrylamide-2-methylpropanesulfonic acid serving as a cross-linking agent and 0.01% of ammonium persulfate serving as an initiator, wherein the sum of the components is 100%; adding naphthenic acid imidazoline betaine and amido alkyl imidazoline which are corrosion inhibition effective components into water, dissolving and stirring for 60min to obtain a corrosion inhibition effective component aqueous solution, slowly scattering acrylamide powder into the corrosion inhibition effective component aqueous solution, stirring for 50min until acrylamide particles are completely dissolved to obtain a gel mother solution, adding N, N-methylene bisacrylamide, 2-acrylamide-2-methylpropanesulfonic acid and an initiator ammonium persulfate into the gel mother solution, stirring until the acrylamide particles are completely dissolved, reacting for 5h in a 65 ℃ water bath kettle, aging for 2h at room temperature, crushing the obtained gel to obtain solid corrosion inhibitor gel particles, wherein the size of the particles can pass through a 100-mesh screen.
(2) Preparing a solid foam drainage agent:
weighing the following components in proportion: the solid corrosion inhibitor is prepared by uniformly mixing 10% of solid corrosion inhibitor gel particles, 20% of lauramidopropyl betaine, 20% of coco imidazoline betaine, 10% of fatty alcohol-polyoxyethylene ether sulfate, 10% of sodium gluconate, 29% of urea and 1% of adhesive polyethylene glycol, wherein the sum of the components is 100%, and the solid corrosion inhibitor gel particles, the lauramidopropyl betaine, the coco imidazoline betaine, the fatty alcohol-polyoxyethylene ether sulfate, the sodium gluconate and the urea are uniformly mixed to obtain a mixture; adding water into the polyethylene glycol binder until the polyethylene glycol binder is completely dissolved to obtain a binder solution; and uniformly mixing the obtained mixture and the adhesive solution, stirring for 2 hours, and pressing into a rod-shaped PPG-3 solid foam drainage agent in a mold.
The test of the product obtained by the invention is as follows:
(1) aiming at the product characteristics of the invention, the comparative test is carried out on the following items:
(2) the solid foam water discharging agent with corrosion inhibition function for the gas well, which is prepared in the embodiments 1, 2 and 3, is RX-PPG-1, RX-PPG-2 and RX-PPG-3.
(3) For comparison, a foam water discharging agent used on the oil and gas field, namely a gas well foam water discharging agent RX-DK already used on the oil and gas field, and a corrosion inhibitor RX-204A for oil and gas gathering and transportation are selected as comparison products, which are hereinafter referred to as RX-DK and RX-204B for short
(4) The test results are shown in table 1:
TABLE 1 test results
From the test results, the initial foam height, the foam height after 5min and the liquid carrying amount are obviously improved compared with the foam drainage agent used in the gas field under the same conditions, because the solid foam drainage agent can provide more surfactant components under the condition of the same mass concentration, and because the solid corrosion inhibitor gel particles are dissolved in the test water, the viscosity of the liquid is increased, and the foam strength and the liquid carrying amount have obvious enhancement effects.
Under the same condition, compared with the corrosion inhibitor RX-204A used in oil and gas field for oil and gas gathering and transportation, the static uniform corrosion inhibition rate meets the requirement of SY/T5273-.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A solid foam drainage agent with a corrosion inhibition function is characterized in that: the paint comprises the following components in percentage by mass: 1-10% of solid corrosion inhibitor gel particles, 30-60% of effective components of foam drainage, 2-30% of solid filler and 0-2% of adhesive, wherein the sum of the components is 100%.
2. The solid foam drainage agent with corrosion inhibition function according to claim 1, characterized in that: the solid corrosion inhibitor gel particles comprise the following components in percentage by mass: 1-60% of corrosion inhibition effective component, 1-25% of main component of gel skeleton, 0-0.5% of cross-linking agent, 0-0.01% of initiator and 1-40% of water.
3. The solid foam drainage agent with corrosion inhibition function according to claim 1, characterized in that: the foam drainage effective component is one or more of cocamidopropyl amine oxide, cocamidopropyl betaine, lauramidopropyl ammonium oxide, lauramidopropyl betaine, cocoimidazoline betaine and fatty alcohol-polyoxyethylene ether sulfate.
4. The solid foam drainage agent with corrosion inhibition function according to claim 1, characterized in that: the solid filler is one or more of starch, urea, sodium gluconate and sodium silicate.
5. The solid foam drainage agent with corrosion inhibition function according to claim 1, characterized in that: the adhesive is one or more of hydroxypropyl methylcellulose, gelatin and polyethylene glycol.
6. The solid foam drainage agent with corrosion inhibition function according to claim 1, characterized in that: the corrosion inhibition effective components in the solid corrosion inhibitor gel particles are one or more of naphthenic imidazole, polyoxyethylene ether, imidazoline quaternary ammonium salt, naphthenic acid imidazoline betaine, rosin-based imidazoline and amido alkyl imidazoline; the gel skeleton in the solid corrosion inhibitor gel particles is mainly acrylamide.
7. The solid foam drainage agent with the corrosion inhibition function according to claim 1, wherein the solid foam drainage agent comprises the following components in percentage by weight: the main components of the cross-linking agent in the solid corrosion inhibitor gel particles are one or more of 2-acrylamide-2-methylpropanesulfonic acid, N-methylene bisacrylamide, chromium acetate, potassium dichromate and thiourea; the initiator in the solid corrosion inhibitor gel particles is one or more of ammonium persulfate, sodium bisulfite and potassium persulfate.
8. A method for preparing the solid foam drainage agent with the corrosion inhibition function according to any one of claims 1 to 7, characterized in that: (1) synthesizing solid corrosion inhibitor gel particles:
weighing the following components in proportion: 1-25% of acrylamide, 1-60% of effective corrosion inhibition components, 1-50% of water, 0-0.5% of cross-linking agent and 0-0.01% of initiator, wherein the sum of the components is 100%, adding the effective corrosion inhibition components into water, stirring for more than 20min to obtain an aqueous solution of the effective corrosion inhibition components, slowly scattering acrylamide powder into the aqueous solution of the effective corrosion inhibition components, stirring for more than 30min until acrylamide particles are completely dissolved to obtain a gel mother solution, adding the cross-linking agent and the initiator into the gel mother solution, stirring until the acrylamide particles are completely dissolved, reacting in a water bath kettle at 65 ℃ for 3-6h, aging at room temperature for 1-3h, crushing the obtained gel to obtain solid corrosion inhibitor gel particles, and adjusting the size of the particles by a crushing step;
(2) preparing a solid foam drainage agent:
weighing the following components in proportion: 1-20% of solid corrosion inhibitor gel particles, 30-50% of effective foam drainage ingredients, 2-50% of solid filler and 0-2% of adhesive, wherein the sum of the components is 100%, and when the adhesive is not equal to 0 part, the solid corrosion inhibitor gel particles, the effective foam drainage ingredients and the solid filler are uniformly mixed to obtain a mixture; adding water into the adhesive until the adhesive is completely dissolved to obtain an adhesive solution; uniformly mixing the obtained mixture and a binder solution, and pressing and molding in a mold, wherein the shape comprises but is not limited to a rod shape, a spherical shape, a conical shape, a spindle shape and the like; when the adhesive is equal to 0 part, uniformly mixing the solid corrosion inhibitor gel particles, the foam drainage effective component and the solid filler to obtain a mixture; and pressing the mixture in a mold to form shapes including but not limited to rods, spheres, cones and spindles.
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| CN111088020A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Method for discharging liquid and producing gas by adopting salt-resistant oil-resistant solid foam drainage agent composition |
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