CN114736663B - Sterilization foam drainage agent with corrosion inhibition function and preparation method thereof - Google Patents
Sterilization foam drainage agent with corrosion inhibition function and preparation method thereof Download PDFInfo
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- CN114736663B CN114736663B CN202210519851.1A CN202210519851A CN114736663B CN 114736663 B CN114736663 B CN 114736663B CN 202210519851 A CN202210519851 A CN 202210519851A CN 114736663 B CN114736663 B CN 114736663B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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Abstract
The invention discloses a sterilization foam drainage agent with a corrosion inhibition function and a preparation method thereof, and solves the technical problems that in the prior art, a foam drainage agent is not compatible with a bactericide, foaming and sterilization effects are mutually influenced, so that two medicaments are required to be filled in a staggered manner, and the medicament filling amount is large and the cost is high. The sterilizing foam discharging agent comprises the following raw materials in parts by weight: 15-30 parts of cocamidopropyl dimethyl tertiary amine; 10-25 parts of lauramidopropyl dimethyl tertiary amine; 10-20 parts of hydrogen peroxide; 10-15 parts of benzalkonium bromide; 5-15 parts of glutaraldehyde; 5-15 parts of pyridine quaternary ammonium salt; 10-37 parts of water. The bactericidal foam drainage agent with the corrosion inhibition function can play roles of a foam drainage agent and a bactericide at the same time when in application, and has the advantages of small filling amount, low cost, low labor intensity of site construction, convenient construction, high construction efficiency and good chemical stability and thermal stability.
Description
Technical Field
The invention relates to the technical field of natural gas collection, in particular to a sterilizing foam drainage agent with a corrosion inhibition function and a preparation method thereof.
Background
Shale gas exploitation mainly uses a large-scale volumetric fracturing technology, and the consumption of the fracturing fluid of the horizontal well is up to 3-4 square meters. A large amount of fracturing flowback fluid and formation water are produced into the wellbore as natural gas is produced, producing a large amount of bacterial contamination. For example, by monitoring, it is found that:
flowback fluid from a Yanning shale gas field: iron bacteria up to 6000/ml and sulfate reducing bacteria up to 25000/ml;
in the flowback liquid of Chongqing Yongchuan shale gas field: iron bacteria up to 500/ml, sulfate reducing bacteria up to 60000/ml, saprophytic bacteria up to 500/ml;
in the flowback fluid of the Schlembese extension block: iron bacteria up to 2.5X10 7 The number of the sulfate reducing bacteria per ml is up to 2.5X10 7 And each ml.
The bacterial content in the flowback fluid of the gas field exceeds NB/T14002.3-2015 shale gas reservoir reconstruction part 3: the index requirement of the water for recycling the fracturing flowback fluid in the fracturing flowback fluid recycling and treating method.
In the exploitation process of the gas well, the flowback liquid with high bacteria is extremely easy to accumulate liquid and scale at the low-lying part of the shale gas gathering and conveying system, and if the pipe cleaning operation is not carried out regularly, the bacteria at the part can be gathered and propagated rapidly, and the pipeline can be corroded and perforated in a short time.
The wall thickness of a certain shale gas pipeline is severely thinned at a plurality of low-lying positions for two years, and the thinning amount reaches 3-5mm. And two low-lying positions corrode the perforation, and most of them are pitting. Analysis of the corrosion products revealed iron sulfide Fe 2 S 2 、Fe 4 S 4 Nutrient Fe of sulfate reducing bacteria S O 4 While shale gas H 2 The S content is zero, which indicates that sulfate reducing bacteria are one of the causes of corrosion.
At present, a combination mode of a foam drainage process and wellhead filling bactericide is mainly adopted for drainage and sterilization. The combined process relieves the production problem of shale gas to a certain extent, but the applicant finds that the following problems exist in the field application process:
1. the foam discharging agent and the bactericide are not compatible, the foaming and sterilizing effects are mutually influenced, and the incompatibility problem exists, so that two medicaments are required to be filled at different times, the filling amount is several times of that of an indoor test, and the problems of large medicament filling amount and high cost exist;
2. the traditional bactericide has low high temperature resistance, is generally only filled into the ground flow, and cannot protect underground pipelines;
3. because the foam discharging agent and the bactericide are required to be filled separately, the labor intensity of site construction is high, and the construction efficiency is affected.
Disclosure of Invention
The invention aims to provide a sterilization foam drainage agent with a corrosion inhibition function and a preparation method thereof, which are used for solving the technical problems that in the prior art, a foam drainage agent and a bactericide are not compatible, foaming and sterilization effects are mutually influenced, so that two medicaments must be filled in a staggered manner, and the medicament filling amount is large and the cost is high.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a sterilizing foam drainage agent with a corrosion inhibition function, which comprises the following raw materials in parts by weight: 15-30 parts of cocamidopropyl dimethyl tertiary amine; 10-25 parts of lauramidopropyl dimethyl tertiary amine; 10-20 parts of hydrogen peroxide; 10-15 parts of benzalkonium bromide; 5-15 parts of glutaraldehyde; 5-15 parts of pyridine quaternary ammonium salt; 10-37 parts of water.
Further, the weight portions of the raw materials are as follows: 18-25 parts of cocoamidopropyl dimethyl tertiary amine; 15-22 parts of lauramidopropyl dimethyl tertiary amine; 12-18 parts of hydrogen peroxide; 12-14 parts of benzalkonium bromide; 8-12 parts of glutaraldehyde; 8-12 parts of pyridine quaternary ammonium salt; 14-30 parts of water.
Further, the weight portions of the raw materials are as follows: 20 parts of cocamidopropyl dimethyl tertiary amine; 18 parts of lauramidopropyl dimethyl tertiary amine; 15 parts of hydrogen peroxide; 13 parts of benzalkonium bromide; 10 parts of glutaraldehyde; 10 parts of pyridine quaternary ammonium salt; 20 parts of water.
The invention provides a preparation method of a bactericidal foam drainage agent with a corrosion inhibition function, which comprises the following steps:
s1, adding cocoamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, stirring, heating and preserving heat at 70-80 ℃ until the cocoamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, keeping the temperature at 70-80 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, keeping the temperature at 70-80 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; after the hydrogen peroxide is added dropwise, keeping the temperature at 70-80 ℃ for 3-4 hours, and then cooling to 55-60 ℃;
and S4, maintaining a stirring state, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Further, in the step S3, the dropwise adding time of the hydrogen peroxide is controlled to be 3-3.5 hours.
Further, in the steps S1, S2, S3 and S4, the stirring rate is 80-120 rpm. .
Based on the technical scheme, the embodiment of the invention at least has the following technical effects:
(1) The bactericidal foam drainage agent with the corrosion inhibition function can play roles of a foam drainage agent and a bactericide at the same time when in application, and can play a role in corrosion inhibition protection on a gas well pipeline while draining and producing gas; when the water-soluble bactericide is added into a shaft, accumulated liquid in the shaft of a gas well can be effectively discharged, and iron bacteria, sulfate reducing bacteria and saprophyte in produced liquid can be killed.
(2) When the bactericidal foam drainage agent with the corrosion inhibition function is applied, the bactericidal foam drainage agent is added into a shaft in a concentration of 0.3-1%, so that the bactericidal foam drainage agent can play a role in draining accumulated liquid in the shaft of a gas well and killing iron bacteria, sulfate reducing bacteria and saprophytic bacteria in produced liquid, and has the advantages of small filling amount and low cost.
(3) The sterilization foam drainage agent with the corrosion inhibition function can play roles of foam drainage agent and bactericide at the same time in application, and is filled once, so that the labor intensity of site construction is low and the construction efficiency is high;
(4) The bactericidal foam drainage agent with the corrosion inhibition function provided by the invention has the advantages of good chemical stability and thermal stability, incombustibility, no corrosion and convenient construction in a very wide temperature range.
Detailed Description
1. Preparation examples:
1. raw materials
The proportions of the raw materials in examples 1 to 7 are shown in Table 1 below:
table 1 examples 1-7 raw materials Table (in parts by weight)
2. Preparation method
Example 1:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring at a stirring speed of 100 revolutions per minute, heating and preserving heat at 75 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 100 revolutions per minute, maintaining the temperature at 75 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 100 revolutions per minute, maintaining the temperature at 75 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; the dropping time of the hydrogen peroxide is controlled to be 3.2 hours, the temperature is kept at 75 ℃ for 3.5 hours after the hydrogen peroxide is dropped, and then the temperature is reduced to 58 ℃;
s4, maintaining a stirring state, wherein the stirring speed is 100 revolutions per minute, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 2:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring at a stirring speed of 80 revolutions per minute, heating and preserving heat at 70 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 80 revolutions per minute, maintaining the temperature at 70 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 80 revolutions per minute, keeping the temperature at 70 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; the dropping time of the hydrogen peroxide is controlled to be 3.5 hours, the temperature is kept at 70 ℃ for 4 hours after the hydrogen peroxide is dropped, and then the temperature is reduced to 55 ℃;
s4, maintaining a stirring state, wherein the stirring speed is 80 revolutions per minute, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 3:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring, heating and preserving heat at 80 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved, wherein the stirring speed is 120 revolutions per minute;
s2, maintaining a stirring state, wherein the stirring speed is 120 r/min, and keeping the temperature at 80 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 120 revolutions per minute, maintaining the temperature at 80 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; the dropping time of the hydrogen peroxide is controlled to be 3 hours, the temperature is kept at 80 ℃ for 3 hours after the hydrogen peroxide is dropped, and then the temperature is reduced to 60 ℃;
and S4, maintaining a stirring state, wherein the stirring speed is 120 r/min, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 4:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring, heating and preserving heat at 78 ℃ at a stirring speed of 90 revolutions per minute until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 90 revolutions per minute, preserving the temperature at 78 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 90 revolutions per minute, preserving the temperature at 78 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; controlling the dropping speed of the hydrogen peroxide to be 3.2 hours, continuously preserving the temperature at 78 ℃ for 3.2 hours after the hydrogen peroxide is added dropwise, and then cooling to 58 ℃;
and S4, maintaining a stirring state, wherein the stirring speed is 90 r/min, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 5:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring at a stirring speed of 110 revolutions per minute, heating and preserving heat at 72 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 110 revolutions per minute, maintaining the temperature at 72 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 110 revolutions per minute, keeping the temperature at 72 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; controlling the dropping speed of the hydrogen peroxide to be 3.5 hours, continuously preserving heat at 72 ℃ for 3.8 hours after the hydrogen peroxide is added dropwise, and then cooling to 56 ℃;
and S4, maintaining a stirring state, wherein the stirring speed is 110 revolutions per minute, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 6:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring at a stirring speed of 95 revolutions per minute, heating and preserving heat at 75 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 95 revolutions per minute, maintaining the temperature at 75 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 95 revolutions per minute, maintaining the temperature at 75 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; the dropping time of the hydrogen peroxide is controlled to be 3 hours, the temperature is kept at 70-80 ℃ for 3.5 hours after the hydrogen peroxide is dropped, and then the temperature is reduced to 60 ℃;
s4, maintaining a stirring state, wherein the stirring speed is 95 r/min, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
Example 7:
comprising the following steps:
s1, adding cocamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, starting stirring at a stirring speed of 105 revolutions per minute, heating and preserving heat at 80 ℃ until the cocamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, wherein the stirring speed is 105 revolutions per minute, maintaining the temperature at 80 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, wherein the stirring speed is 105 revolutions per minute, preserving the temperature at 80 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; the dropping time of the hydrogen peroxide is controlled to be 3 hours, the hydrogen peroxide is continuously kept at 80 ℃ for 4 hours after the dropping, and then the temperature is reduced to 60 ℃;
and S4, maintaining a stirring state, wherein the stirring speed is 105 r/min, adding the quaternary ammonium pyridine salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
2. Experimental example
1. The bactericidal foam drainage agent prepared in examples 1-7 is applied to a water sample of a Chongqing shale gas block (yellow 202H1-3 well), and the bactericidal, foaming and liquid carrying properties of the bactericidal foam drainage agent are tested:
(1) Sterilization performance test
The bactericidal foam drainage agent prepared in examples 1-7 was added to a Chongqing shale gas block (yellow 202H1-3 well) water sample at a concentration of 1.00%o and a concentration of 2.00%o, the bactericidal performance was tested, the test method was tested according to SY/T0532-2012 oilfield injection water bacteria analysis method, the sterilization dilution method, and the test results are shown in the following tables 2 and 3:
TABLE 2 sterilizing Capacity of 1.00 per mill concentration Corrosion inhibition sterilizing foam drainage agent in yellow 202H1-3 well water sample
Note that: + is that no bacteria are killed, -is that the bacteria have been completely killed
Table 3 sterilizing Capacity of 2.00% concentration Corrosion inhibition sterilizing foam drainage agent in yellow 202H1-3 well water sample
Note that: + is that no bacteria are killed, -is that the bacteria have been completely killed
As can be seen from tables 1 and 2, the foam drainage agent prepared in the examples 1-7 of the invention can completely kill bacteria in yellow 202H1-3 well water samples at a concentration of 1.00 per mill and a concentration of 2.00 per mill, which indicates that the foam drainage agent has good sterilization performance.
(2) Foaming, foam stabilization and liquid carrying capacity test
The bactericidal foam drainage agent prepared in examples 1-7 is added into a water sample of a Chongqing shale gas block (yellow 202H1-3 well) according to the concentration of 1.00 per mill and the concentration of 2.00 per mill, the foaming, foam stabilization and liquid carrying capacity of the bactericidal foam drainage agent are tested, the test method is tested according to a SY-T5761-1995_drainage gas-producing foaming agent method, and the test results are shown in the following tables 4 and 5:
table 4 foaming, foam stabilizing and liquid carrying capacity of 1.00%
Table 5 foaming, foam stabilizing and liquid carrying capacity of 2.00%
As can be seen from tables 4 and 5, the foam drainage agent prepared in the examples 1-7 of the invention has good foaming power, foam stabilizing power and liquid carrying capacity in the corrosion inhibition sterilization foam drainage agent with concentration of 1.00 per mill and concentration of 2.00 per mill in yellow 202H1-3 well water samples.
2. The bactericidal foam drainage agent prepared in examples 1-7 was applied to a water sample of a stonebeck extended block (maintenance 12, no. 4 gas station) to test its bactericidal, foaming and liquid carrying properties:
(1) Sterilization performance test
The bactericidal foam drainage agent prepared in examples 1-7 was added to a water sample of a schlenz extended block (gas station No. 4 in 12 th well) at a concentration of 1.00%o and a concentration of 2.00%o, and the bactericidal performance was tested, and the test method was tested according to the SY/T0532-2012 oilfield injection water bacteria analysis method, namely, the sterilization dilution method, and the test results are shown in the following tables 6 and 7:
table 6 1.00% concentration corrosion inhibition sterilization foam drainage agent in repairing 12 and 4 # gas gathering station water sample sterilization capability
Note that: + is that no bacteria are killed, -is safe for bacteria and is lethal
Table 7 sterilizing Capacity of 2.00%o concentration Corrosion inhibition sterilizing foam drainage agent in water sample of gas station No. 4 after 12 is repaired
Note that: + is that no bacteria are killed, -is safe for bacteria and is lethal
As can be seen from tables 6 and 7, the foam drainage agent prepared in the examples 1-7 of the invention can completely kill bacteria in water samples of the gas gathering station No. 12 and No. 4 at 1.00 permillage concentration and 2.00 permillage concentration, which shows that the foam drainage agent has good sterilization performance.
(2) Foaming, foam stabilization and liquid carrying capacity test
The bactericidal foam drainage agent prepared in examples 1-7 was added to a water sample of a Schlenz extended block (gas station # 12 in section 4) at a concentration of 1.00%o and a concentration of 2.00%o, and the foaming, foam stabilization and liquid carrying capacities were tested, and the test method was tested according to the SY-T5761-1995_drainage gas production foaming agent method, and the test results are shown in the following tables 8 and 9:
table 8 foaming, foam stabilizing and liquid carrying capacity of 1.00%
Table 9 2.00%o concentration corrosion inhibition sterilization foam drainage agent foaming, foam stabilizing and liquid carrying capacity in repairing 12 # 4 gas gathering station water sample
As can be seen from tables 8 and 9, the foam drainage agent prepared in the examples 1-7 of the invention has good foaming power, foam stabilizing power and liquid carrying capacity in corrosion inhibition and sterilization foam drainage agents with concentration of 1.00 per mill and concentration of 2.00 per mill in water samples of gas gathering station No. 4 of 12.
3. The bactericidal foam drainage agent prepared in the example 1 is applied to a water sample of a Schlenmez extended block for corrosion inhibition performance test, and the test method is tested according to a JB 7901-2001-T metal material laboratory uniform corrosion full immersion test method, and the test results are shown in the following table 10:
table 10 test of corrosion inhibition performance of corrosion inhibition type sterilizing foam discharging agent prepared in example 1 at different temperatures
Claims (5)
1. The sterilizing foam drainage agent with the corrosion inhibition function is characterized by comprising the following raw materials in parts by weight: 15-30 parts of cocamidopropyl dimethyl tertiary amine; 10-25 parts of lauramidopropyl dimethyl tertiary amine; 10-20 parts of hydrogen peroxide; 10-15 parts of benzalkonium bromide; 5-15 parts of glutaraldehyde; 5-15 parts of pyridine quaternary ammonium salt; 10-37 parts of water;
the foam drainage agent is prepared by the following steps:
s1, adding cocoamidopropyl dimethyl tertiary amine, lauramidopropyl dimethyl tertiary amine and water into a reaction kettle, stirring, heating and preserving heat at 70-80 ℃ until the cocoamidopropyl dimethyl tertiary amine and the lauramidopropyl dimethyl tertiary amine are completely dissolved;
s2, maintaining a stirring state, keeping the temperature at 70-80 ℃, and adding benzalkonium bromide into the reaction kettle for uniform stirring;
s3, maintaining a stirring state, keeping the temperature at 70-80 ℃, and slowly dropwise adding hydrogen peroxide into the reaction kettle; after the hydrogen peroxide is added dropwise, keeping the temperature at 70-80 ℃ for 3-4 hours, and then cooling to 55-60 ℃;
and S4, maintaining a stirring state, adding the pyridine quaternary ammonium salt and glutaraldehyde into the reaction kettle, and uniformly stirring to obtain a finished product.
2. The bactericidal foam water discharging agent with corrosion inhibition function according to claim 1, wherein the bactericidal foam water discharging agent is characterized by comprising the following raw materials in parts by weight: 18-25 parts of cocoamidopropyl dimethyl tertiary amine; 15-22 parts of lauramidopropyl dimethyl tertiary amine; 12-18 parts of hydrogen peroxide; 12-14 parts of benzalkonium bromide; 8-12 parts of glutaraldehyde; 8-12 parts of pyridine quaternary ammonium salt; 14-30 parts of water.
3. The bactericidal foam water discharging agent with corrosion inhibition function according to claim 1, wherein the bactericidal foam water discharging agent is characterized by comprising the following raw materials in parts by weight: 20 parts of cocamidopropyl dimethyl tertiary amine; 18 parts of lauramidopropyl dimethyl tertiary amine; 15 parts of hydrogen peroxide; 13 parts of benzalkonium bromide; 10 parts of glutaraldehyde; 10 parts of pyridine quaternary ammonium salt; 20 parts of water.
4. The bactericidal foam water discharging agent with corrosion inhibition function according to claim 1, wherein in the step S3, the dropping time of hydrogen peroxide is controlled to be 3-3.5h.
5. The bactericidal foam-removing agent with corrosion inhibition function according to claim 1, wherein in the steps S1, S2, S3 and S4, the stirring rate is 80-120 rpm.
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| CN116042203B (en) * | 2023-03-31 | 2023-06-20 | 西南石油大学 | Temperature-sensitive foam discharging agent system suitable for high-temperature high-salt gas reservoir as well as preparation method and application thereof |
| CN116554850B (en) * | 2023-04-23 | 2024-07-19 | 成都劳恩普斯科技有限公司 | Integrated multifunctional sterilization corrosion inhibition foam discharging agent and preparation method and application thereof |
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| CN114736663A (en) | 2022-07-12 |
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Inventor after: Liu Wei Inventor after: Wu Weiran Inventor after: Ren Li Inventor after: Gu Xianhu Inventor after: Qi Jie Inventor after: Xiong Kun Inventor after: Xiao Renwei Inventor after: Qi Kairui Inventor before: Liu Wei Inventor before: Wu Weiran Inventor before: Ren Li Inventor before: Gu Xianhu Inventor before: Qi Jie Inventor before: Xiong Kun Inventor before: Xiao Renwei Inventor before: Qi Kairui |