Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone

Enhanced Oil Recovery (EOR) processes are used to recover bypassed and residual oil trapped in a reservoir after primary and secondary recovery methods. Recently, polymeric nanofluid, a novel material formed from the incorporation of polymer and nanoparticle has gained prodigious attention and is pr...

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Main Author:	Olayinka, Gbadamosi Afeez
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/85840/1/GbadamosiAfeezOlayinkaPSChE2019.pdf
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spelling	my-utm-ep.858402020-07-30T07:35:09Z Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone 2019 Olayinka, Gbadamosi Afeez TP Chemical technology Enhanced Oil Recovery (EOR) processes are used to recover bypassed and residual oil trapped in a reservoir after primary and secondary recovery methods. Recently, polymeric nanofluid, a novel material formed from the incorporation of polymer and nanoparticle has gained prodigious attention and is proposed for EOR due to its sterling and fascinating properties. Nonetheless, previous studies have focussed more on the suitability of inorganic silica and non-metallic polymeric nanofluids (PNFs). Besides, the performance evaluation of PNFs on pore scale displacement efficiency remains obscure while the mechanistic understanding of this novel material for heavy oil recovery in typical reservoir conditions is elusive in literature. The aim of this study is to explore and exploit the effect of nanoparticles on rheological properties of partially hydrolysed polyacrylamide (HPAM) at varying electrolyte concentration and temperature conditions. Besides, IFT and wettability alteration potential of the PNFs in the presence of heavy oil were evaluated. Herein, two PNFs namely silicon dioxide (SiO2) and aluminium oxide (AhOs), formulated from the combination of the individual nanoparticles and HPAM were exclusively studied. The nanoparticles were characterised using transmission electron microscopy, while the formulated PNFs were characterised using Fourier transform infrared microscopy and thermo gravimetric analysis to determine the morphology and thermal stability respectively. The rheological properties of the PNFs and HPAM were determined using Brookfield RST. Furthermore, the behaviour of the PNFs and HPAM at oil-water interface was investigated using Kruss tensiometer. Moreover, the wettability effect of the fluids in sandstone cores was examined using DataPhysics optical contact angle equipment. Finally, heavy oil displacement in mid-permeability sandstone cores at typical reservoir condition was carried out using HPHT core flooding equipment. Experimental results show that the rheological properties improved while degradation of HPAM molecules was inhibited due to the addition of NPs. At 2,000 ppm HPAM solution (27 mol % hydrolysis degree), 0.1 wt.% NP concentration was found to be the optimal choice for AhO3 and SiO2 NP which gives rise to the highest viscosity on the rheological characterization. PNFs exhibited better steady shear viscosity performance under the different electrolyte concentration and temperature studied due to shielding effects. Besides, PNFs lowers IFT of heavy oil due to irreversible adsorption of the NP’s at the oil-water interface. Moreover, PNF’s alter wettability of sandstone cores from oil-wet to water-wet due to structural disjoining pressure mechanism. Field emission scanning electron microscope and energy-dispersive x-ray analysis confirm adsorption of nanoparticles on the sandstone cores. Finally, heavy oil displacement test in midpermeability sandstone cores showed that incremental oil recoveries of AhO3 and SiO2 PNFs at their optimum concentration were 10.6% and 6.1% respectively over HPAM. Physical filtration phenomena lowered the efficiency of the PNF’s at higher concentrations. The synergic combination of NPs and polymer resulted in enhanced properties of HPAM, hence, culminating in enhanced sweep and pore scale displacement efficiencies. This study is beneficial for extending the frontiers of knowledge in nanotechnology application for EOR. 2019 Thesis http://eprints.utm.my/id/eprint/85840/ http://eprints.utm.my/id/eprint/85840/1/GbadamosiAfeezOlayinkaPSChE2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131986 phd doctoral Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Olayinka, Gbadamosi Afeez Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
description	Enhanced Oil Recovery (EOR) processes are used to recover bypassed and residual oil trapped in a reservoir after primary and secondary recovery methods. Recently, polymeric nanofluid, a novel material formed from the incorporation of polymer and nanoparticle has gained prodigious attention and is proposed for EOR due to its sterling and fascinating properties. Nonetheless, previous studies have focussed more on the suitability of inorganic silica and non-metallic polymeric nanofluids (PNFs). Besides, the performance evaluation of PNFs on pore scale displacement efficiency remains obscure while the mechanistic understanding of this novel material for heavy oil recovery in typical reservoir conditions is elusive in literature. The aim of this study is to explore and exploit the effect of nanoparticles on rheological properties of partially hydrolysed polyacrylamide (HPAM) at varying electrolyte concentration and temperature conditions. Besides, IFT and wettability alteration potential of the PNFs in the presence of heavy oil were evaluated. Herein, two PNFs namely silicon dioxide (SiO2) and aluminium oxide (AhOs), formulated from the combination of the individual nanoparticles and HPAM were exclusively studied. The nanoparticles were characterised using transmission electron microscopy, while the formulated PNFs were characterised using Fourier transform infrared microscopy and thermo gravimetric analysis to determine the morphology and thermal stability respectively. The rheological properties of the PNFs and HPAM were determined using Brookfield RST. Furthermore, the behaviour of the PNFs and HPAM at oil-water interface was investigated using Kruss tensiometer. Moreover, the wettability effect of the fluids in sandstone cores was examined using DataPhysics optical contact angle equipment. Finally, heavy oil displacement in mid-permeability sandstone cores at typical reservoir condition was carried out using HPHT core flooding equipment. Experimental results show that the rheological properties improved while degradation of HPAM molecules was inhibited due to the addition of NPs. At 2,000 ppm HPAM solution (27 mol % hydrolysis degree), 0.1 wt.% NP concentration was found to be the optimal choice for AhO3 and SiO2 NP which gives rise to the highest viscosity on the rheological characterization. PNFs exhibited better steady shear viscosity performance under the different electrolyte concentration and temperature studied due to shielding effects. Besides, PNFs lowers IFT of heavy oil due to irreversible adsorption of the NP’s at the oil-water interface. Moreover, PNF’s alter wettability of sandstone cores from oil-wet to water-wet due to structural disjoining pressure mechanism. Field emission scanning electron microscope and energy-dispersive x-ray analysis confirm adsorption of nanoparticles on the sandstone cores. Finally, heavy oil displacement test in midpermeability sandstone cores showed that incremental oil recoveries of AhO3 and SiO2 PNFs at their optimum concentration were 10.6% and 6.1% respectively over HPAM. Physical filtration phenomena lowered the efficiency of the PNF’s at higher concentrations. The synergic combination of NPs and polymer resulted in enhanced properties of HPAM, hence, culminating in enhanced sweep and pore scale displacement efficiencies. This study is beneficial for extending the frontiers of knowledge in nanotechnology application for EOR.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Olayinka, Gbadamosi Afeez
author_facet	Olayinka, Gbadamosi Afeez
author_sort	Olayinka, Gbadamosi Afeez
title	Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
title_short	Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
title_full	Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
title_fullStr	Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
title_full_unstemmed	Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
title_sort	application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/85840/1/GbadamosiAfeezOlayinkaPSChE2019.pdf
_version_	1747818461574201344

Application of polymeric nanofluids for enhanced oil recovery in mid-permeability sandstone

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