Enhancing oil production using silica-based nanofluids: Preparation, stability, and displacement mechanisms

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Abstract

A novel two-step preparation of a silica nanofluid (Si-NF) with potential for light oil recovery is herein presented. It was observed that a Si-NF, prepared by dispersing silica nanoparticles (Si-NPs) in poly(vinyl alcohol) (1%) under carbon dioxide gas bubbling, is stable for 30 days at a temperature as high as 55 °C without any visible sedimentation. Unstable Si-NFs formed siliceous gels whose strength depends on Si-NP load. The spectral characterization revealed that prepared Si-NFs consisted of silanols, carbonyls, and alcohols. As part of an effort to enhance the light oil production (API 31°), 1, 0.5, and 0.1 wt % Si-NPs were injected in waterflooded Berea sandstone at 55 °C. An increase in oil as high as 7.6% was achieved for the Si-NF with the highest Si-NP load (1 wt % Si-NP). Oil production encompassed the discontinuity of Si-NFs, channel plugging, wettability, and interfacial tension alterations.

Original languageEnglish
Pages (from-to)15045-15060
Number of pages16
JournalIndustrial and Engineering Chemistry Research
Volume58
Issue number32
DOIs
Publication statusPublished - Aug 14 2019

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Silicon Dioxide
oil production
Oils
silica
Silica
alcohol
Alcohols
Nanoparticles
oil
wettability
Sandstone
Application programming interfaces (API)
Sedimentation
Carbon Dioxide
Surface tension
Wetting
Carbon dioxide
discontinuity
Gels
gel

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Cite this

@article{d5c96e98487740a1b31f6ed278652e66,
title = "Enhancing oil production using silica-based nanofluids: Preparation, stability, and displacement mechanisms",
abstract = "A novel two-step preparation of a silica nanofluid (Si-NF) with potential for light oil recovery is herein presented. It was observed that a Si-NF, prepared by dispersing silica nanoparticles (Si-NPs) in poly(vinyl alcohol) (1{\%}) under carbon dioxide gas bubbling, is stable for 30 days at a temperature as high as 55 °C without any visible sedimentation. Unstable Si-NFs formed siliceous gels whose strength depends on Si-NP load. The spectral characterization revealed that prepared Si-NFs consisted of silanols, carbonyls, and alcohols. As part of an effort to enhance the light oil production (API 31°), 1, 0.5, and 0.1 wt {\%} Si-NPs were injected in waterflooded Berea sandstone at 55 °C. An increase in oil as high as 7.6{\%} was achieved for the Si-NF with the highest Si-NP load (1 wt {\%} Si-NP). Oil production encompassed the discontinuity of Si-NFs, channel plugging, wettability, and interfacial tension alterations.",
author = "{Nguele Odou}, {Pierre Ronald} and Tola Sreu and Hiroki Inoue and Yuichi Sugai and Kyuro Sasaki",
year = "2019",
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TY - JOUR

T1 - Enhancing oil production using silica-based nanofluids

T2 - Preparation, stability, and displacement mechanisms

AU - Nguele Odou, Pierre Ronald

AU - Sreu, Tola

AU - Inoue, Hiroki

AU - Sugai, Yuichi

AU - Sasaki, Kyuro

PY - 2019/8/14

Y1 - 2019/8/14

N2 - A novel two-step preparation of a silica nanofluid (Si-NF) with potential for light oil recovery is herein presented. It was observed that a Si-NF, prepared by dispersing silica nanoparticles (Si-NPs) in poly(vinyl alcohol) (1%) under carbon dioxide gas bubbling, is stable for 30 days at a temperature as high as 55 °C without any visible sedimentation. Unstable Si-NFs formed siliceous gels whose strength depends on Si-NP load. The spectral characterization revealed that prepared Si-NFs consisted of silanols, carbonyls, and alcohols. As part of an effort to enhance the light oil production (API 31°), 1, 0.5, and 0.1 wt % Si-NPs were injected in waterflooded Berea sandstone at 55 °C. An increase in oil as high as 7.6% was achieved for the Si-NF with the highest Si-NP load (1 wt % Si-NP). Oil production encompassed the discontinuity of Si-NFs, channel plugging, wettability, and interfacial tension alterations.

AB - A novel two-step preparation of a silica nanofluid (Si-NF) with potential for light oil recovery is herein presented. It was observed that a Si-NF, prepared by dispersing silica nanoparticles (Si-NPs) in poly(vinyl alcohol) (1%) under carbon dioxide gas bubbling, is stable for 30 days at a temperature as high as 55 °C without any visible sedimentation. Unstable Si-NFs formed siliceous gels whose strength depends on Si-NP load. The spectral characterization revealed that prepared Si-NFs consisted of silanols, carbonyls, and alcohols. As part of an effort to enhance the light oil production (API 31°), 1, 0.5, and 0.1 wt % Si-NPs were injected in waterflooded Berea sandstone at 55 °C. An increase in oil as high as 7.6% was achieved for the Si-NF with the highest Si-NP load (1 wt % Si-NP). Oil production encompassed the discontinuity of Si-NFs, channel plugging, wettability, and interfacial tension alterations.

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