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Carbon-based amphiphilic nanoflow for oil displacement and preparation method

A carbon-based nano, carbon-based technology, applied in the direction of nano-carbon, chemical instruments and methods, carbon compounds, etc., to achieve the effect of improving oil displacement efficiency, improving oil recovery, and broad industrial application prospects

Active Publication Date: 2021-07-16
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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  • Carbon-based amphiphilic nanoflow for oil displacement and preparation method
  • Carbon-based amphiphilic nanoflow for oil displacement and preparation method
  • Carbon-based amphiphilic nanoflow for oil displacement and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Add 10g of graphite powder to a 500mL three-necked bottle, then add 80g of toluene and dimethylformamide solvent (mass ratio 1:1), stir in an oil bath at 80°C for 60min; The agent N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane is added to the graphite powder solution, sealed and stirred, and reacted in an oil bath at 96°C for 6 hours, filtered, purified, and dried to obtain Coupling agent modified graphite powder. Add 3g of coupling agent-modified graphite powder into a 500mL three-necked bottle, then add 15g of toluene and dimethylformamide solvent (mass ratio 1:1), stir in an oil bath at 80°C for 60min; in an oil bath at 90°C Add 1.5g of polyoxyethylene ether into the graphite powder solution modified by the coupling agent under certain conditions, seal and stir, react in an oil bath at 90°C for 6h, filter with suction, purify, and dry to obtain carbon-based amphiphilic nanofluid 1.

Embodiment 2

[0034] Add 13g of carbon powder to a 500mL three-necked bottle, then add 90g of toluene and dimethylformamide solvent (mass ratio 1:1), stir in an oil bath at 80°C for 60min; The agent γ-aminopropyltriethoxysilane was added to the carbon powder solution, sealed and stirred, and reacted in an oil bath at 96° C. for 6 hours, filtered, purified, and dried to obtain the carbon powder modified by the coupling agent. Add 6g of carbon powder modified by coupling agent into a 500mL three-necked bottle, then add 20g of toluene and dimethylformamide solvent (mass ratio 1:1), stir in an oil bath at 80°C for 60min; in an oil bath at 90°C Add 2.0 g of polyoxyethylene ether to the solution of the coupling agent modified carbon powder under the conditions; seal and stir, react in an oil bath at 90° C. for 6 hours, filter with suction, purify, and dry to obtain the carbon-based amphiphilic nanofluid 2 .

Embodiment 3

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

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Abstract

The invention discloses a carbon-based amphiphilic nanoflow for oil displacement, which is prepared by the following steps of by taking carbon-based nanopowder as a raw material, modifying the carbon-based nanopowder by adopting a silane coupling agent and polyoxyethylene ether in sequence to obtain the carbon-based amphiphilic nanoflow. The carbon-based nano powder is selected from one of graphite powder, carbon powder, graphene or graphene oxide. The preparation method of the amphiphilic nanoflow comprises the following steps of dispersing carbon-based nanopowder in a mixed solvent of toluene and dimethylformamide in an equal mass ratio, then adding a silane coupling agent, sealing and stirring, reacting in an oil bath at 96 DEG C for 6 hours, and carrying out suction filtration, purification and drying to obtain silane coupling agent modified carbon-based nanopowder, dispersing the silane coupling agent modified carbon-based nanopowder into another part of mixed solvent of toluene and dimethylformamide in equal mass ratio, and adding polyoxyethylene ether, sealing and stirring, reacting in an oil bath at 90 DEG C for 6 hours, and carrying out suction filtration, purification and drying to obtain the carbon-based amphiphilic nanoflow. The carbon-based amphiphilic nanoflow disclosed by the invention can be directly prepared from oilfield injection water to obtain a carbon-based amphiphilic nanoflow dispersion liquid.

Description

technical field [0001] The invention relates to the technical field of oil field chemistry, in particular to a carbon-based amphiphilic nano flow for oil displacement and a preparation method. Background technique [0002] Since Degennes first proposed the Janus concept in his Nobel Prize-winning speech in 1991, amphiphilic particles with asymmetric chemical composition and properties have attracted widespread attention from scholars at home and abroad. In recent years, there are various types of nanomaterials based on Janus particles, and they have 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 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 t...

Claims

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Application Information

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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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