Nanoparticle emulsion thickener and preparation method thereof

A nanoparticle and thickener technology, applied in the field of nanoparticle emulsion thickener and its preparation, can solve the problems of pH sensitivity, poor leveling, poor stability, etc., to prevent deactivation of surfactants, increase The effect of stability

Inactive Publication Date: 2017-12-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cellulose-based thickeners have high thickening efficiency, but have disadvantages such as poor leveling, poor stability, and susceptibility to microbial degradation.
Polyacrylic acid thickener has strong thickening and leveling properties, good biological stability, but is sensitive to pH value and poor water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Preparation of Nanoparticle Emulsion Thickener

[0025] The raw material components and dosage are as follows: hydrophilic nano silicon dioxide, emulsifier, diesel oil, polyethylene glycol 400, carboxymethyl cellulose, mineralized water with a mineralization degree of 0.6%, wherein the hydrophilic nano Silicon oxide accounts for 6% of the total mass of the emulsion, emulsifier accounts for 3% of the total mass of the emulsion, diesel oil accounts for 40% of the total mass of the emulsion, polyethylene glycol 400 accounts for 0.1% of the total mass of the emulsion, and carboxymethyl cellulose accounts for the total mass of the emulsion. 0.3% of the mass, mineralized water accounts for 50.6% of the total mass of the emulsion.

[0026] The preparation method is: compound the emulsifier Span80 and Tween80 according to the mass ratio of 1:1. Dissolve hydrophilic nano-silica and emulsifier in diesel oil, stir evenly, add mineralized water dissolved in carboxymethyl...

Embodiment 2

[0027] Example 2 Preparation of Nanoparticle Emulsion Thickener

[0028] The raw material components and dosage are as follows: hydrophilic nano silicon dioxide, emulsifier, paraffin, polyethylene glycol 800, carboxymethyl cellulose, mineralized water with a mineralization degree of 0.5%, among them, hydrophilic nano Silicon oxide accounts for 8% of the total mass of the emulsion, emulsifier accounts for 5% of the total mass of the emulsion, paraffin wax accounts for 50% of the total mass of the emulsion, polyethylene glycol 800 accounts for 0.3% of the total mass of the emulsion, and carboxymethyl cellulose accounts for the total mass of the emulsion. 0.2% by mass, mineralized water accounts for 36.5% of the total mass of the emulsion.

[0029] The preparation method is: compound the emulsifier Span80 and Tween80 according to the mass ratio of 15:1. Dissolve hydrophilic nano-silica and emulsifier in paraffin, stir evenly, add mineralized water dissolved in carboxymethyl cell...

Embodiment 3

[0030] Example 3 Preparation of Nanoparticle Emulsion Thickener

[0031] The raw material components and dosage are as follows: hydrophobic nano-silica, emulsifier, paraffin, polyethylene glycol 200, polyvinyl alcohol, mineralized water with a salinity of 0.8%, wherein hydrophobic nano-silica accounts for 4% of the total mass, emulsifiers account for 2% of the total mass of the emulsion, paraffin wax accounts for 45% of the total mass of the emulsion, polyethylene glycol 200 accounts for 0.4% of the total mass of the emulsion, and carboxymethyl cellulose accounts for 0.4% of the total mass of the emulsion , mineralized water accounts for 48.2% of the total mass of the emulsion.

[0032] The preparation method is: compound emulsifiers Span80, Tween80 and AEO-9 according to the mass ratio of 5:10:20. Dissolve hydrophobic nano silica and emulsifier in paraffin, stir evenly, add mineralized water dissolved in polyvinyl alcohol at 30°C, stir and add polyethylene glycol 200, and co...

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PUM

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Abstract

The invention discloses a nanoparticle emulsion thickener, which is prepared from the following raw materials by weight: 4-8% of nanoparticle, 2-5% of an emulsifier, 40-50% of a dispersion medium, 0-0.5% of a dispersant, 0-0.5% of a stabilizer, and 36-54% of mineralized water, wherein the nanoparticle is selected from hydrophilic nanometer silica and / or hydrophobic nanometer silica, the emulsifier is a non-ionic emulsifier, the dispersion medium is selected from diesel oil, paraffin, silicone oil and / or asphalt, the dispersant is polyethylene glycol, and the stabilizer is selected from carboxymethylcellulose and / or polyvinyl alcohol. According to the present invention, the nanoparticle emulsion thickener has low injection viscosity; during the application, the viscosity of the system is continuously increased along with the continuous immersion of formation water, and finally the gel state is achieved so as to prevent the outflow of formation water; and the nanoparticle emulsion thickener is suitable for the further deepening of oilfield development, and can achieve the purposes of water controlling and oil stabilizing.

Description

technical field [0001] The invention relates to a nanoparticle emulsion thickener and a preparation method thereof, belonging to the technical field of chemical additives for tertiary oil recovery in the field of petrochemical industry. Background technique [0002] In recent years, with the further deepening of oilfield development, simply adjusting the water absorption profile of water injection wells can no longer adapt to changes in underground conditions: only adjusting the water absorption profile in the near-wellbore zone cannot change the direction of deep liquid flow, and cannot improve the swept volume of water injection role. Moreover, the chemical treatment agent currently used uses too much raw material, which leads to an increase in cost. Therefore, it is necessary to develop a new type of thickener to improve the profile of deep oil layers and further achieve the purpose of controlling water and stabilizing oil. [0003] At present, there are many thickeners...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03
CPCC09K8/032C09K2208/10
Inventor 汪庐山靳彦欣刘巍王涛田玉芹王昊史树彬陈伟张冬会宋岱锋刘伟伟
Owner CHINA PETROLEUM & CHEM CORP
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