CN108796507B - Composite acidizing corrosion inhibitor - Google Patents
Composite acidizing corrosion inhibitor Download PDFInfo
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- CN108796507B CN108796507B CN201810737817.5A CN201810737817A CN108796507B CN 108796507 B CN108796507 B CN 108796507B CN 201810737817 A CN201810737817 A CN 201810737817A CN 108796507 B CN108796507 B CN 108796507B
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- 230000007797 corrosion Effects 0.000 title claims abstract description 48
- 238000005260 corrosion Methods 0.000 title claims abstract description 48
- 239000003112 inhibitor Substances 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000000855 fermentation Methods 0.000 claims abstract description 12
- 230000004151 fermentation Effects 0.000 claims abstract description 12
- 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 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000008103 glucose Substances 0.000 claims abstract description 9
- 241000512259 Ascophyllum nodosum Species 0.000 claims abstract description 8
- 235000019779 Rapeseed Meal Nutrition 0.000 claims abstract description 8
- 239000004456 rapeseed meal Substances 0.000 claims abstract description 8
- 239000000706 filtrate Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 18
- 239000003607 modifier Substances 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 239000004094 surface-active agent Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000003995 emulsifying agent Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000012258 stirred mixture Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 229930006000 Sucrose Natural products 0.000 claims description 11
- 239000005720 sucrose Substances 0.000 claims description 11
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- -1 sucrose fatty acid ester Chemical class 0.000 claims description 7
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 235000019764 Soybean Meal Nutrition 0.000 claims description 6
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 6
- 102000004142 Trypsin Human genes 0.000 claims description 6
- 108090000631 Trypsin Proteins 0.000 claims description 6
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 6
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 230000000249 desinfective effect Effects 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000004021 humic acid Substances 0.000 claims description 6
- 239000004310 lactic acid Substances 0.000 claims description 6
- 235000014655 lactic acid Nutrition 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000004455 soybean meal Substances 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 239000012588 trypsin Substances 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- DNISEZBAYYIQFB-PHDIDXHHSA-N (2r,3r)-2,3-diacetyloxybutanedioic acid Chemical compound CC(=O)O[C@@H](C(O)=O)[C@H](C(O)=O)OC(C)=O DNISEZBAYYIQFB-PHDIDXHHSA-N 0.000 claims description 4
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 4
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 235000001014 amino acid Nutrition 0.000 abstract description 7
- 150000001413 amino acids Chemical class 0.000 abstract description 7
- 230000005764 inhibitory process Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000011241 protective layer Substances 0.000 abstract description 5
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 abstract description 4
- 235000013922 glutamic acid Nutrition 0.000 abstract description 4
- 239000004220 glutamic acid Substances 0.000 abstract description 4
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004472 Lysine Substances 0.000 abstract description 2
- 244000046052 Phaseolus vulgaris Species 0.000 abstract description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000000813 microbial effect Effects 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 abstract description 2
- 108010052780 polyasparagine Proteins 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 10
- 230000020477 pH reduction Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 235000010344 sodium nitrate Nutrition 0.000 description 5
- 239000004317 sodium nitrate Substances 0.000 description 5
- 102000003886 Glycoproteins Human genes 0.000 description 3
- 108090000288 Glycoproteins Proteins 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- ZMKVBUOZONDYBW-UHFFFAOYSA-N 1,6-dioxecane-2,5-dione Chemical compound O=C1CCC(=O)OCCCCO1 ZMKVBUOZONDYBW-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010942 self-nucleation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a composite acidizing corrosion inhibitor, belonging to the technical field of corrosion inhibition. The invention takes bean pulp, rapeseed meal and kelp as raw materials, and obtains a solution rich in amino acids such as glutamic acid, lysine and the like through enzymolysis and microbial fermentation, and the solution also contains a certain amount of glucose, after the solution is used, the solution can be well attached to the surface of metal by utilizing the adhesive force of the amino acids, and simultaneously, the amino acids in the compound liquid and the glutamic acid are polymerized to form polyasparagine polymers due to the rise of the temperature in an oil well, and a protective layer is formed on the surface of a pipeline to prevent the corrosion of the metal. The invention solves the problem that the oil field pipeline is easy to corrode and perforate in the oil field exploitation petrochemical process at present.
Description
Technical Field
The invention belongs to the technical field of corrosion inhibition, and particularly relates to a composite acidizing corrosion inhibitor.
Background
Acidification is a measure for strengthening oil recovery, and is an effective technical measure for increasing the yield of an oil and gas well and increasing the injection of a water injection well. The principle is that the permeability of stratum pores and cracks is recovered or improved through the dissolving and corrosion effects of acid liquor on rock cement or stratum pores, plugs in cracks and the like. In the production of oil and gas wells, it is often necessary to enhance recovery by acidizing. However, in the process of acidizing construction, corrosion of acid liquor to metals can not only damage ground equipment and underground pipelines, but also a large amount of corroded iron ions can form iron oxide precipitates under certain conditions, so that the acidizing effect is affected, and sudden breakage accidents of underground pipes can be caused sometimes to cause serious economic loss, and then, an acidizing corrosion inhibitor needs to be added to solve the problems.
The acidizing corrosion inhibitor is a chemical substance or a mixture of chemical substances which is present in the environment (medium) in a proper concentration and form and can prevent or slow down corrosion. It can reduce the corrosion of acid to the equipment to the utmost extent, prolong the service life of the pipeline and ensure the acidification construction to be carried out smoothly. The quality of the corrosion inhibitor for acidification is related to success or failure of acidification construction. Most of the corrosion inhibitors widely used at present are organic amine, imidazoline, amide, thiourea, heterocyclic ketone, quaternary ammonium salt and the like, but the corrosion inhibition effect of the corrosion inhibitor is obviously reduced when the temperature is increased in the acidification process along with the continuous appearance of high-temperature deep wells. Therefore, it is very necessary to produce a corrosion inhibitor with high efficiency.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the invention provides a composite acidizing corrosion inhibitor, aiming at the problem that oil field pipeline corrosion perforation is easy to occur in the oil extraction petrochemical process in the oil field at present.
In order to solve the technical problems, the invention adopts the following technical scheme:
the composite acidizing corrosion inhibitor comprises, by weight, 80-90 parts of deionized water, 4-7 parts of an emulsifier, 3-6 parts of a surfactant, and is characterized by further comprising 23-29 parts of a modifier, 18-22 parts of a composite liquid and 6-9 parts of an additive.
The emulsifier is any one of diacetyl tartaric acid monoglyceride and sucrose fatty acid ester.
The surfactant is sodium dodecyl sulfate.
The modifier is prepared by taking 10-15 parts by weight of succinic acid, 9-13 parts by weight of 1, 4-butanediol and 7-9 parts by weight of tetrabutyl titanate, and stirring and mixing the materials.
The preparation method of the composite liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 6-9: 4-6: 7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3: 6-8, collecting a mixture, taking 70-90 parts of the mixture, 30-40 parts of glucose, 20-25 parts of sucrose, 11-13 parts of trypsin and 7-9 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. and (3) fermenting the stirred mixture in a fermentation tank, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 4-6 ℃, filtering, collecting filtrate, concentrating to 60-70% of the volume of the filtrate, and collecting concentrated solution to obtain the composite solution.
The additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 4-7.
Compared with other methods, the method has the beneficial technical effects that:
(1) the invention takes bean pulp, rapeseed meal and kelp as raw materials, and obtains a solution rich in amino acids such as glutamic acid, lysine and the like through enzymolysis and microbial fermentation, and the solution also contains a certain amount of glucose, after the solution is used, the solution can be well attached to the metal surface by utilizing the adhesive force of the amino acids, and simultaneously the amino acids in the compound liquid and the glutamic acid are polymerized to form a polyasparagine polymer due to the rise of the temperature in an oil well, a protective layer is formed on the surface of a pipeline to prevent the corrosion of the metal, meanwhile, the glucose in the compound liquid forms thermal glycoprotein with the amino acids under the action of a surfactant, the thermal glycoprotein is loaded in the protective layer, the adsorption capacity of the corrosion inhibitor and the metal surface is increased through the adsorption effect of the thermal glycoprotein, and the chelating effect with the metal ions can be avoided from escaping, the corrosion inhibition effect is increased;
(2) according to the corrosion inhibitor, the modifier is added, through the components in the modifier, poly (butylene succinate) is formed under the action of high temperature, a protective layer is further formed on the metal surface, and the titanium element can be subjected to self-nucleation and crystallization under the action of the titanium element, so that the stability is improved, and the corrosion inhibitor is compounded with the compound liquid, so that the temperature resistance of the corrosion inhibitor is improved, and sodium nitrate can be added to assist in improving the slow release effect;
(3) the additive is added, so that the additive is uniformly distributed on the protective layer when in use, and can promote the formation of a passive film under the action of the additive, improve the corrosion inhibition effect, enhance the coordination with metal and increase the adsorption effect;
(4) the raw materials used in the invention have low toxicity and little pollution to the environment, and can not cause corrosion perforation of oil field pipelines.
Detailed Description
The emulsifier is any one of diacetyl tartaric acid monoglyceride and sucrose fatty acid ester.
The surfactant is sodium dodecyl sulfate.
The modifier is prepared by stirring and mixing 10-15 parts by weight of succinic acid, 9-13 parts by weight of 1, 4-butanediol and 7-9 parts by weight of tetrabutyl titanate, and 4-6 parts by weight of sodium nitrate can also be added.
The preparation method of the compound liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 6-9: 4-6: 7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3: 6-8, collecting a mixture, taking 70-90 parts of the mixture, 30-40 parts of glucose, 20-25 parts of sucrose, 11-13 parts of trypsin and 7-9 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. and (3) fermenting the stirred mixture in a fermentation tank, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 4-6 ℃, filtering, collecting filtrate, concentrating to 60-70% of the volume of the filtrate, and collecting concentrated solution to obtain the composite solution.
The additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 4-7.
The composite acidizing corrosion inhibitor comprises, by weight, 80-90 parts of deionized water, 4-7 parts of an emulsifier, 3-6 parts of a surfactant, 23-29 parts of a modifier, 18-22 parts of a composite liquid and 6-9 parts of an additive.
When in use, the raw materials are stirred and mixed to obtain the composite acidizing corrosion inhibitor.
The emulsifier is diacetyl tartaric acid monoglyceride.
The surfactant is sodium dodecyl sulfate.
The modifier is prepared by stirring and mixing 10 parts by weight of succinic acid, 9 parts by weight of 1,4 parts by weight of butanediol and 7 parts by weight of tetrabutyl titanate, and 4 parts by weight of sodium nitrate can be added.
The preparation method of the compound liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 6:4:7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3:6, collecting a mixture, taking 70 parts of the mixture, 30 parts of glucose, 20 parts of sucrose, 11 parts of trypsin and 7 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. and (3) putting the stirred mixture into a fermentation tank for fermentation, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 4 ℃, filtering, collecting filtrate, concentrating to 60% of the volume of the filtrate, and collecting concentrated solution to obtain the composite solution.
The additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 4.
The composite acidizing corrosion inhibitor comprises, by weight, 80 parts of deionized water, 4 parts of an emulsifier, 3 parts of a surfactant, 23 parts of a modifier, 18 parts of a composite liquid and 6 parts of an additive.
When in use, the raw materials are stirred and mixed to obtain the composite acidizing corrosion inhibitor.
The emulsifier is sucrose fatty acid ester.
The surfactant is sodium dodecyl sulfate.
The modifier is prepared by taking 13 parts of succinic acid, 11 parts of 1, 4-butanediol and 8 parts of tetrabutyl titanate by weight parts, stirring and mixing to obtain the modifier, and 5 parts of sodium nitrate can be added.
The preparation method of the compound liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 7:5:7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3:7, collecting a mixture, taking 80 parts of the mixture, 35 parts of glucose, 23 parts of sucrose, 12 parts of trypsin and 8 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. and (3) putting the stirred mixture into a fermentation tank for fermentation, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 5 ℃, filtering, collecting filtrate, concentrating to 65% of the volume of the filtrate, and collecting concentrated solution to obtain the composite solution.
The additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 5.
The composite acidizing corrosion inhibitor comprises, by weight, 85 parts of deionized water, 5 parts of an emulsifier, 5 parts of a surfactant, 26 parts of a modifier, 20 parts of a composite liquid and 7 parts of an additive.
When in use, the raw materials are stirred and mixed to obtain the composite acidizing corrosion inhibitor.
The emulsifier is sucrose fatty acid ester.
The surfactant is sodium dodecyl sulfate.
The modifier is prepared by taking 15 parts of succinic acid, 13 parts of 1, 4-butanediol and 9 parts of tetrabutyl titanate by weight parts, stirring and mixing to obtain the modifier, and 6 parts of sodium nitrate can be added.
The preparation method of the compound liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 9:6:7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3:8, collecting a mixture, taking 90 parts of the mixture, 40 parts of glucose, 25 parts of sucrose, 13 parts of trypsin and 9 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. and (3) putting the stirred mixture into a fermentation tank for fermentation, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 6 ℃, filtering, collecting filtrate, concentrating to 70% of the volume of the filtrate, and collecting concentrated solution to obtain the composite solution.
The additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 7.
The composite acidizing corrosion inhibitor comprises, by weight, 90 parts of deionized water, 7 parts of an emulsifier, 6 parts of a surfactant, 29 parts of a modifier, 22 parts of a composite liquid and 9 parts of an additive.
When in use, the raw materials are stirred and mixed to obtain the composite acidizing corrosion inhibitor.
Comparative example 1: the procedure was essentially the same as in example 1 except that the modifier was absent.
Comparative example 2: the procedure was substantially the same as in example 1 except that the complexing solution was absent.
Comparative example 3: essentially the same procedure as in example 1 was followed except that the additive was absent.
Comparative example 4: an acidification corrosion inhibitor produced by a certain company in Beijing.
The performance of the acidizing corrosion inhibitor of the embodiment and the comparative example is respectively detected, and the acidizing corrosion inhibition performance is tested according to a method in an industrial standard SY/T5405-1996syt5405 acidizing corrosion inhibitor performance test method evaluation index. The specific test results are shown in table 1.
Table 1:
in sum, the acidizing corrosion inhibitor prepared by the invention has good corrosion inhibition performance, the performance of the acidizing corrosion inhibitor is obviously superior to that of the current commercial products, and the acidizing corrosion inhibitor is worthy of popularization.
Claims (3)
1. The composite acidizing corrosion inhibitor comprises, by weight, 80-90 parts of deionized water, 4-7 parts of an emulsifier, 3-6 parts of a surfactant, and is characterized by further comprising 23-29 parts of a modifier, 18-22 parts of a composite liquid and 6-9 parts of an additive;
the modifier is prepared by taking 10-15 parts by weight of succinic acid, 9-13 parts by weight of 1, 4-butanediol and 7-9 parts by weight of tetrabutyl titanate, and stirring and mixing the materials to obtain the modifier;
the preparation method of the composite liquid comprises the following steps:
A. grinding soybean meal, rapeseed meal and kelp according to a mass ratio of 6-9: 4-6: 7, performing ultrasonic oscillation on a ground material and water according to a mass ratio of 3: 6-8, collecting a mixture, taking 70-90 parts of the mixture, 30-40 parts of glucose, 20-25 parts of sucrose, 11-13 parts of trypsin and 7-9 parts of lactic acid bacteria powder according to parts by weight, stirring and mixing, and collecting a stirred mixture;
B. putting the stirred mixture into a fermentation tank for fermentation, collecting the fermented mixture, filtering, collecting filtrate, sterilizing and disinfecting the filtrate, standing at 4-6 ℃, filtering, collecting filtrate, concentrating to 60-70% of the volume of the filtrate, and collecting concentrated solution to obtain composite solution;
the additive is prepared by mixing DL-diethyl malate and humic acid according to the mass ratio of 6: 4-7.
2. The compound acidizing corrosion inhibitor according to claim 1, wherein the emulsifier is any one of diacetyl tartaric acid monoglyceride and sucrose fatty acid ester.
3. The composite acidizing corrosion inhibitor of claim 1 wherein said surfactant is sodium lauryl sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737817.5A CN108796507B (en) | 2018-07-06 | 2018-07-06 | Composite acidizing corrosion inhibitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737817.5A CN108796507B (en) | 2018-07-06 | 2018-07-06 | Composite acidizing corrosion inhibitor |
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| CN108796507A CN108796507A (en) | 2018-11-13 |
| CN108796507B true CN108796507B (en) | 2020-09-04 |
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| CN201810737817.5A Active CN108796507B (en) | 2018-07-06 | 2018-07-06 | Composite acidizing corrosion inhibitor |
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| CN116023920A (en) * | 2022-11-11 | 2023-04-28 | 天津大港油田滨港集团博弘石油化工有限公司 | Environment-friendly tetracyclic imidazoline solid corrosion inhibitor and preparation method thereof |
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