Metallic nanoparticles and carbon nanomaterials have been extensively studied in enhanced oil recovery.Carbon nanotube(CNT)/TiO_(2) nanocomposite is synthesized and investigated in terms of contact angle,interfacial t...Metallic nanoparticles and carbon nanomaterials have been extensively studied in enhanced oil recovery.Carbon nanotube(CNT)/TiO_(2) nanocomposite is synthesized and investigated in terms of contact angle,interfacial tension(IFT),emulsion stability,etc.Its performance in oil displacement in porous media is evaluated through glass micromodel experiment.The synthesized CNT/TiO_(2) is composed of TiO_(2)-based nanocomposites and CNTs as reinforcement phase.TiO_(2) is the dominant crystalline phase,and TiO_(2) nanoparticles cover on the CNTs.CNT/TiO_(2) nanocomposite is able to alter the wetting conditions of the rock from strong oil-wet to hydrophilic conditions and effectively reduce the interfacial tension.CNT/TiO_(2) nanocomposite plays an effective role in stabilizing the Pickering emulsions,and even forms stable emulsions at high temperature as 90℃.For NaCl concentration of up to 2%,a stable emulsion can be formed even after 7 days.It is observed from glass micromodel experiments that the CNT/TiO_(2) nanofluid provides a higher recovery factor denoting its promising performance in enhanced oil recovery.展开更多
文摘Metallic nanoparticles and carbon nanomaterials have been extensively studied in enhanced oil recovery.Carbon nanotube(CNT)/TiO_(2) nanocomposite is synthesized and investigated in terms of contact angle,interfacial tension(IFT),emulsion stability,etc.Its performance in oil displacement in porous media is evaluated through glass micromodel experiment.The synthesized CNT/TiO_(2) is composed of TiO_(2)-based nanocomposites and CNTs as reinforcement phase.TiO_(2) is the dominant crystalline phase,and TiO_(2) nanoparticles cover on the CNTs.CNT/TiO_(2) nanocomposite is able to alter the wetting conditions of the rock from strong oil-wet to hydrophilic conditions and effectively reduce the interfacial tension.CNT/TiO_(2) nanocomposite plays an effective role in stabilizing the Pickering emulsions,and even forms stable emulsions at high temperature as 90℃.For NaCl concentration of up to 2%,a stable emulsion can be formed even after 7 days.It is observed from glass micromodel experiments that the CNT/TiO_(2) nanofluid provides a higher recovery factor denoting its promising performance in enhanced oil recovery.
