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A kind of carbon-based amphiphilic nanoflow for oil displacement and preparation method

A carbon-based nano and carbon-based technology, applied in nano-carbon, chemical instruments and methods, carbon compounds, etc., to achieve the effects of easy availability of raw materials, broad industrial application prospects, and improved wettability

Active Publication Date: 2022-07-05
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because carbon has a large number of allotropes, especially the preparation and research of carbon-based composite nanomaterials has become a research hotspot in the academic circles. The types and preparation methods of carbon-based nanofluids prepared by scholars in the past are controversial. Significant, but it often requires the help of external equipment, or artificially give synthetic induction conditions other than the properties of the material itself

Method used

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  • A kind of carbon-based amphiphilic nanoflow for oil displacement and preparation method
  • A kind of carbon-based amphiphilic nanoflow for oil displacement and preparation method
  • A kind of carbon-based amphiphilic nanoflow for oil displacement and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Add 10g graphite powder to a 500mL three-neck flask, then add 80g toluene and dimethylformamide solvent (mass ratio 1:1), stir for 60min in an oil bath at 80°C; couple 5g in an oil bath at 80°C The agent N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane was added to the graphite powder solution, sealed and stirred, and the combined reaction was carried out in an oil bath at 96 °C for 6 h, suction filtration, purification and drying were obtained. Coupling agent modified graphite powder. Add 3g of graphite powder modified by coupling agent to a 500mL three-neck flask, then add 15g of toluene and dimethylformamide solvent (mass ratio 1:1), stir for 60min in an oil bath at 80°C; in an oil bath at 90°C 1.5 g of polyoxyethylene ether was added to the graphite powder solution modified by the coupling agent under the conditions, sealed and stirred, reacted in an oil bath at 90 °C for 6 h, filtered, purified and dried to obtain the carbon-based amphiphilic nanoflow 1.

Embodiment 2

[0034] Add 13g of carbon powder to a 500mL three-neck flask, then add 90g of toluene and dimethylformamide solvent (mass ratio 1:1), stir for 60min in an oil bath at 80°C; couple 8g in an oil bath at 80°C The agent γ-aminopropyltriethoxysilane was added to the carbon powder solution, sealed and stirred, and the combined reaction was carried out in an oil bath at 96°C for 6 hours, and the carbon powder modified by the coupling agent was obtained by suction filtration, purification and drying. In a 500mL three-neck flask, add 6g of carbon powder modified by coupling agent, then add 20g of toluene and dimethylformamide solvent (mass ratio 1:1), stir for 60min in an oil bath at 80°C; in an oil bath at 90°C 2.0 g of polyoxyethylene ether was added to the coupling agent-modified carbon powder solution under the conditions; sealed and stirred, reacted in an oil bath at 90 °C for 6 h, suction filtered, purified and dried to obtain carbon-based amphiphilic nanoflow 2.

Embodiment 3

[0036] Add 12g graphene to a 500mL three-neck flask, then add 100g toluene and dimethylformamide solvent (mass ratio 1:1), stir for 60min in an oil bath at 80°C; couple 5g in an oil bath at 80°C The agent N-2-(aminoethyl)-3-aminopropyltrimethoxysilane and 5g coupling agent γ-aminopropyltriethoxysilane were added to the dispersed graphene, sealed and stirred, and placed in an oil bath for 96 ℃ to carry out the synthesis reaction for 6h, suction filtration, purification and drying to obtain the graphene modified by the coupling agent; add 3.2g of the graphene modified by the coupling agent into a 500mL three-neck flask, and then add 30g of toluene and dimethylformamide Solvent (mass ratio 1:1), stir for 60 min in an oil bath at 80°C; add 3.3 g of polyoxyethylene ether to the coupling agent-modified graphene solution at 90°C in an oil bath, seal and stir in oil The reaction was carried out in a bath at 90 °C for 6 h, and the carbon-based amphiphilic nanoflow 3 was obtained by suc...

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Abstract

The invention discloses a carbon-based amphiphilic nanofluid for oil displacement. Using carbon-based nanopowder as a raw material, it is modified with a silane coupling agent and polyoxyethylene ether successively to obtain a carbon-based amphiphilic nanofluid. ; Carbon-based nano-powder is selected from a graphite powder, carbon powder, graphene or graphene oxide. The preparation method of the amphiphilic nanofluid is as follows: disperse the carbon-based nanopowder in a mixed solvent with an equal mass ratio of toluene and dimethylformamide, then add a silane coupling agent, seal and stir, react in an oil bath at 96 °C for 6 h, and pump Filter, purify and dry to obtain the carbon-based nanopowder modified by the silane coupling agent; disperse the carbon-based nanopowder modified by the silane coupling agent in another mixed solvent of toluene and dimethylformamide in the same mass ratio; Polyoxyethylene ether was added, sealed and stirred, and the reaction was carried out in an oil bath at 90° C. for 6 hours. The carbon-based amphiphilic nanoflow was obtained by suction filtration, purification and drying. The carbon-based amphiphilic nanofluid of the present invention can be directly prepared with oil field injection water to obtain a carbon-based amphiphilic nanofluid dispersion.

Description

technical field [0001] The invention relates to the technical field of oilfield chemistry, in particular to a carbon-based amphiphilic nanoflow for oil displacement and a preparation method. Background technique [0002] Since Degennes first proposed the concept of Janus in his Nobel Prize speech in 1991, amphiphilic particles with asymmetric properties in chemical composition have attracted extensive attention from scholars at home and abroad. In recent years, there are various types of nanomaterials based on Janus particles, with outstanding performance in many aspects such as mechanics, magnetism, optics, and energy industry. Because carbon has a large number of allotropes, especially the preparation and research of carbon-based composite nanomaterials has become a research hotspot in academia. Significant, but often requires the help of external instruments and equipment, or artificially given synthetic induction conditions other than the properties of the material itse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584C01B32/21C01B32/15C01B32/194C01B32/198
CPCC09K8/584C01B32/21C01B32/15C01B32/194C01B32/198
Inventor 刘锐高石蒲万芬赵星芶瑞徐莹雪
Owner SOUTHWEST PETROLEUM UNIV
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