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Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof

A technology of fluorinated alkyl sodium sulfate and composite ions, which is applied in separation methods, chemical instruments and methods, drilling compositions, etc. The effect of reducing pollution, less corrosiveness and prolonging the working cycle

Inactive Publication Date: 2015-11-18
李佳芯 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the secondary pollution is large and the filtration speed is slow
Due to the limitation of technical conditions, it has an impact on the ecological environment
[0003] At present, there is no similar technology at home and abroad

Method used

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  • Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof
  • Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof
  • Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, dilute 20% of citric acid and 10% of ferrous sulfate with distilled water and stir into a uniform liquid in a reactor;

[0032] Step 2, adding 5% ethylene glycol and 1% alkylbenzenesulfonic acid successively;

[0033] Step 3: Add 0.3% perfluorophosphate into the reaction kettle for fluorination. Under room temperature, the fluorination reaction takes 20-30 minutes to obtain a uniform liquid. The product is stable without delamination and deterioration after being placed for 12 months, and the viscosity-reducing rate of the polymer reaches 90%.

Embodiment 2

[0035] Step 1, dilute citric acid 22% and ferrous sulfate 12% with distilled water and stir into a uniform liquid in a reactor;

[0036] Step 2, adding 7% ethylene glycol and 1.2% alkylbenzenesulfonic acid successively;

[0037] Step 3: Add 0.4% perfluorophosphate into the reaction kettle for fluorination. Under room temperature, the fluorination reaction takes 20-30 minutes to obtain a uniform liquid. The product is stable without delamination and deterioration after being placed for 12 months, and the viscosity-reducing rate of the polymer reaches 93%.

Embodiment 3

[0039] Step 1, dilute 25% of citric acid and 15% of ferrous sulfate with distilled water and stir into a uniform liquid in a reactor;

[0040] Step 2, adding 10% ethylene glycol and 1.5% alkylbenzenesulfonic acid successively;

[0041] Step 3: Add 0.5% perfluorophosphate into the reaction kettle for fluorination. Under room temperature, the fluorination reaction takes 20-30 minutes to obtain a uniform liquid. No delamination and no deterioration after being placed for 12 months, the product is stable, and the viscosity-reducing rate of the polymer reaches 97%.

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Abstract

The invention relates to a compound ion fluorinated alkyl sodium sulfate polymer degradation agent and a preparation method and application. The compound ion fluorinated alkyl sodium sulfate polymer degradation agent comprises the following components in percentage by weight: 0.3-0.5% of perfluorophosphate, 1-1.5% of alkyl benzene sulfonic acid, 20-25% of critic acid, 5-10% of ethylene glycol, 15-20% of ferrous sulfate and the balance of water. The compound ion fluorinated alkyl sodium sulfate polymer degradation agent provided by the invention is suitable for reducing viscosity and assisting filtration of a polymer-containing produced liquid in oil field production, and is wide in applicable temperature range, and the crude oil and the polymer-containing produced liquid are successfully separated at a temperature over the freezing point of the crude oil of the produced liquid. Through multiple experiences, the oil content in filtered water is less than 0.02% which reaches the national standard, and the compound ion fluorinated alkyl sodium sulfate polymer degradation agent is energy-saving and environmental-friendly, the pollution is reduced, and the ecological environment is extremely improved.

Description

technical field [0001] The invention relates to a polymer degrading agent, a preparation method and application thereof. The polymer degrading agent can be used to reduce viscosity and filter aid of polymer-containing production fluid, and can be widely used in the field of polymer viscosity reduction in oilfield production and the like. Background technique [0002] At present, the daily production of polymer-containing production fluid in national oilfields is about 1 million tons, and the treatment methods of production fluid are microbial degradation method, oxidant degradation flocculation method, etc. The disadvantage is that the secondary pollution is large and the filtration speed is slow. Due to the limitation of technical conditions, it will affect the ecological environment. [0003] There is no similar technology both at home and abroad at present. Contents of the invention [0004] The technical problem of the present invention is to overcome the deficiencie...

Claims

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Application Information

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IPC IPC(8): C09K8/524C09K8/58B01D37/02
CPCC09K8/524B01D37/02C09K8/58
Inventor 李佳芯李国辉
Owner 李佳芯
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