CN114806527B - Ternary viscous micelle scale degradation agent of nonylphenol polyoxyethylene ether oxalic acid sodium salt - Google Patents
Ternary viscous micelle scale degradation agent of nonylphenol polyoxyethylene ether oxalic acid sodium salt Download PDFInfo
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- CN114806527B CN114806527B CN202210489826.3A CN202210489826A CN114806527B CN 114806527 B CN114806527 B CN 114806527B CN 202210489826 A CN202210489826 A CN 202210489826A CN 114806527 B CN114806527 B CN 114806527B
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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Abstract
The invention belongs to the technical field of oilfield production, and particularly relates to a ternary viscous micelle scale degradation agent of nonylphenol polyoxyethylene ether oxalic acid sodium salt, which comprises the following components in percentage by mass of 5% of nonylphenol polyoxyethylene ether, 15% of stearoyl sarcosinate, 10% of sulfonic acid, 25% of oxalic acid sodium salt and the balance of clear water. The preparation process of the degradation agent comprises the steps of 1, diluting stearoyl sarcosinate and sodium oxalate with clear water according to the mass percentage, and stirring the diluted mixture into uniform liquid in a reaction kettle; 2. adding sulfonic acid into the reaction kettle according to the mass percentage, and mixing and stirring; 3. the nonylphenol polyoxyethylene ether is added into a reaction kettle according to the mass percentage and is mixed and stirred, and the prepared uniform liquid is nonylphenol polyoxyethylene ether oxalic acid sodium salt ternary viscous micelle scale degradation agent. The method solves the problem that the ternary viscous micelle compound scale blocks the organic scale of a ternary compound flooding injection and production pipeline and a near-wellbore zone, and achieves the purposes of reducing pressure, increasing injection and improving production.
Description
Technical Field
The invention belongs to the technical field of oilfield production, and particularly relates to a ternary viscous micelle composite scale degradation agent of a composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt.
Background
At present, daqing oilfield contains ternary injection liquid and produced liquid and produces about 30 ten thousand meters of I/O daily, more than 600 ternary injection wells, more than 1200 ternary extraction wells, more than 50 ternary combined treatment stations, more than 1000 ten thousand kilometers of various caliber ternary injection and production pipelines are gradually increased each year. Because of long-term injection and ternary liquid extraction, ternary viscous micelle organic scale blockage can be formed in an injection production pipeline and a near wellbore zone, and injection allocation cannot be completed for oil field production, so that yield reduction of crude oil production is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a ternary viscous micelle composite scale degradation agent of composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt and a preparation method thereof. The degradation agent is suitable for degrading ternary viscous gel group composite scale generated by ternary injection liquid and produced liquid, has a wide applicable temperature range, can degrade the ternary viscous gel group into oil field comprehensive sewage with the viscosity below 3mPa.s under the condition of normal temperature or formation temperature, eliminates the blockage of the ternary viscous gel group composite scale on the ternary composite flooding injection production pipeline and the near wellbore zone, meets the requirement of ternary sewage injection allocation, recovers a formation fluid channel, and achieves the purposes of pressure reduction, injection increase and production increase.
The invention adopts the technical scheme that: the ternary viscous micelle scale degradation agent comprises 3-5% of nonylphenol polyoxyethylene ether, 10-15% of stearoyl sarcosinate, 5-10% of sulfonic acid, 20-25% of sodium oxalate and the balance of clear water.
Further, the composite scale degradation agent comprises 3% of nonylphenol polyoxyethylene ether, 10% of stearoyl sarcosinate, 5% of sulfonic acid, 20% of sodium oxalate and the balance of clear water in percentage by mass.
Further, the composite scale degradation agent comprises 4% of nonylphenol polyoxyethylene ether, 12% of stearoyl sarcosinate, 7% of sulfonic acid, 22% of sodium oxalate and the balance of clear water by mass percent.
Further, the composite scale degradation agent comprises the components of 5% of polyoxyethylene nonylphenol ether, 15% of stearoyl sarcosinate, 10% of sulfonic acid, 25% of sodium oxalate and the balance of clear water in percentage by mass.
Further, the preparation process of the degradation agent comprises the following steps:
firstly, diluting stearoyl sarcosinate and sodium oxalate with clear water according to mass percent, and stirring the diluted stearoyl sarcosinate and sodium oxalate into uniform liquid in a reaction kettle;
step two, adding sulfonic acid into the reaction kettle according to mass percentage, and mixing and stirring;
and thirdly, adding the polyoxyethylene nonylphenol ether into a reaction kettle according to mass percent, and mixing and stirring to obtain uniform liquid which is the ternary viscous micelle scale degradation agent of polyoxyethylene nonylphenol ether oxalic acid sodium salt.
Furthermore, the ternary viscous micelle scale degradation agent of the nonylphenol polyoxyethylene ether oxalic acid sodium salt is a compound mixture of a surfactant and clear water.
The invention has the beneficial effects that: provides a ternary viscous micelle composite scale degradation agent of composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt and a preparation method thereof. The degradation agent is suitable for degrading ternary viscous gel group composite scale generated by ternary injection liquid and produced liquid, has a wide applicable temperature range, can degrade the ternary viscous gel group into oil field comprehensive sewage with the viscosity below 3mPa.s under the condition of normal temperature or formation temperature, eliminates the blockage of the ternary viscous gel group composite scale on the ternary composite flooding injection production pipeline and the near wellbore zone, meets the requirement of ternary sewage injection allocation, recovers a formation fluid channel, and achieves the purposes of pressure reduction, injection increase and production increase. The degradation agent does not contain an oxidant and microorganisms, and can degrade ternary viscous micelles into sewage with fluidity. The main advantages are as follows:
(1) The degradation process of the ternary viscous micelle degradation agent is a chemical reaction process, and when the ternary viscous micelle is contacted with the ternary viscous micelle, the molecular chain structure of the ternary viscous micelle is changed or broken, so that the macromolecular micelle is dispersed and degraded into a sewage state with fluidity.
(2) The ternary viscous micelle degrading agent does not change the characteristics of crude oil and does not generate new derivatives.
(3) The degradation agent is suitable for degrading and dissolving ternary viscous micelle composite scale at normal temperature with wide applicable temperature range.
(4) The ternary viscous micelle degradation agent is prepared by compounding a surfactant, clean water and the like, has unique performance, and can rapidly promote various chemical reactions to be rapidly carried out. The ternary viscous micelle degrading agent has good adaptability, is suitable for mineralization degree and formation temperature of various formation water, has no oxidizing property and corrosiveness, and has no damage to pipelines and formations.
Detailed Description
Example 1
The preparation process of the ternary viscous micelle composite scale degradation agent of the composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt comprises the following steps:
firstly, diluting 10% of stearoyl sarcosinate and 20% of sodium oxalate with 62% of clean water, and stirring in a reaction kettle to form uniform liquid;
step two, adding 5% of sulfonic acid into the reaction kettle, and mixing and stirring;
and thirdly, adding 3% of polyoxyethylene nonylphenol ether into the reaction kettle, mixing and stirring to obtain uniform liquid which is the ternary viscous micelle composite scale degradation agent of the polyoxyethylene nonylphenol ether oxalic acid sodium salt composite ions.
Example two
The preparation process of the ternary viscous micelle composite scale degradation agent of the composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt comprises the following steps:
step one, diluting 12% of stearoyl sarcosinate and 22% of sodium oxalate with 55% of clean water, and stirring in a reaction kettle to form uniform liquid;
step two, adding 7% of sulfonic acid into the reaction kettle, and mixing and stirring;
and thirdly, adding 4% of polyoxyethylene nonylphenol ether into the reaction kettle, mixing and stirring to obtain uniform liquid which is the ternary viscous micelle composite scale degradation agent of the polyoxyethylene nonylphenol ether oxalic acid sodium salt composite ions.
Example III
The preparation process of the ternary viscous micelle composite scale degradation agent of the composite ion nonylphenol polyoxyethylene ether oxalic acid sodium salt comprises the following steps:
step one, 15% of stearoyl sarcosinate and 25% of sodium oxalate are diluted with 45% of clean water and stirred into uniform liquid in a reaction kettle;
step two, adding 10% of sulfonic acid into the reaction kettle, and mixing and stirring;
and thirdly, adding 5% of polyoxyethylene nonylphenol ether into the reaction kettle, mixing and stirring to obtain uniform liquid which is the ternary viscous micelle composite scale degradation agent of the polyoxyethylene nonylphenol ether oxalic acid sodium salt composite ions.
Example IV
And (3) a ternary viscous micelle degradation experiment of a compound ion nonylphenol polyoxyethylene ether sodium oxalate ternary viscous micelle compound scale degradation agent:
1. experimental conditions:
reagent: the ternary viscous micelle scale degradation agent (hereinafter referred to as degradation agent) of the polyoxyethylene nonyl phenyl ether oxalate sodium salt prepared in the second embodiment and clear water;
sample: ternary viscous gum (hereinafter referred to as gum) in the oil delivery pipe of the ternary oil extraction block of the fourth oil extraction factory in Daqing oilfield.
The experimental steps are as follows: weighing a certain amount of ternary viscous gel and an equivalent amount of degradation agent, respectively placing the ternary viscous gel and the equivalent amount of degradation agent into 3 containers for testing, respectively adding (n-1) times of clear water into the 3 containers, and uniformly mixing (n=5, 10, 15), wherein the concentration of the degradation agent is 20%, 10% and 5% respectively; the mixture of the 3 containers was stored anaerobically in a water bath at 40℃and the dissolution of the samples was observed. The ternary viscous micelle is in a micelle shape and cannot be mixed with the degradation agent at the beginning of mixing, and is sunk into the bottom of the liquid; after 1 hour, the micelle in the 20% concentration degradation agent container floats on the liquid surface; the micelle in the 10% concentration degradant container is in a suspended state; the middle micelles of the 5% strength degradant container remain settled at the bottom of the container. After 3 hours, the micelle in the 20% concentration degradation agent container is dispersed and floats on the liquid surface; the micelle in the 10% concentration degradation agent container is in a floating state; the soaking solution in the 5% strength degradation agent container started to be turbid. After 5 hours, the micelles in the 20% concentration degradant container were all dissolved; the micelles in the 10% and 5% concentration degradant containers still remain in the form of lumps. After 24 hours, all of the micelles in the 3 concentration degradant containers were dissolved.
Claims (2)
1. A ternary viscous micelle scale degradation agent is characterized in that: the degradation agent comprises 4% of polyoxyethylene nonylphenol ether, 12% of stearoyl sarcosinate, 7% of sulfonic acid, 22% of sodium oxalate and the balance of clear water.
2. The ternary viscous micelle scale degradation agent according to claim 1, wherein: the preparation process of the degradation agent comprises the following steps:
firstly, diluting stearoyl sarcosinate and sodium oxalate with clear water according to mass percent, and stirring the diluted stearoyl sarcosinate and sodium oxalate into uniform liquid in a reaction kettle;
step two, adding sulfonic acid into the reaction kettle according to mass percentage, and mixing and stirring;
and thirdly, adding the polyoxyethylene nonylphenol ether into a reaction kettle according to mass percent, and mixing and stirring to obtain uniform liquid which is the ternary viscous micelle scale degradation agent.
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| CN202210489826.3A CN114806527B (en) | 2022-05-07 | 2022-05-07 | Ternary viscous micelle scale degradation agent of nonylphenol polyoxyethylene ether oxalic acid sodium salt |
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| CN114806527B true CN114806527B (en) | 2023-07-07 |
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| CN106726660A (en) * | 2017-02-21 | 2017-05-31 | 九江天赐高新材料有限公司 | A kind of cleaning thickened systems composition of fatty acylsarcosine salt |
| CN108795592A (en) * | 2017-08-23 | 2018-11-13 | 长沙普济生物科技股份有限公司 | A kind of aqua type industrial cleaning agent and preparation method thereof |
| CN111621276A (en) * | 2019-02-27 | 2020-09-04 | 中国石油天然气股份有限公司 | Solid acid plugging agent and method for removing stratum plugging by using same |
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