Environmentally responsive surface-modified silica nanoparticles for enhanced oil recovery

Behzadi, Abed; Mohammadi, Aliasghar

doi:10.1007/s11051-016-3580-1

Cited by 82 publications

(43 citation statements)

References 46 publications

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“…Thereafter, the non-dimensional interaction energy was determined using Equation (2). The interaction potentials between berea mineral and fines calculated for the reference case (no NP) and berea treated with silica and sulfonated silica is shown in Figure 13.…”

Section: Interaction Between Fines and Porous Mediamentioning

confidence: 99%

“…NPs have displayed the potential to act as surface modifiers that could alter the wettability and reduce the oil/water interfacial tension leading to better mobility of the oil phase [1][2][3][4][5][6][7] and reduce fines migration [8,9]. Recent laboratory studies have indicated that nanofluids, which are colloidal dispersions of NP in a dispersing medium have the potential to increase oil recovery [2,7,[10][11][12][13]. Over the past decade, special focus has been directed to silica NPs for EOR due to its hydrophilic nature and ease of functionalization.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Abhishek

Hamouda

2017

Applied Sciences

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This work is aimed at addressing surface modification of berea sandstone by silica nanofluids (NFs). Three types of nanofluids were used: silica/deionized water (DIW), silica in DIW with a stabilizer fluid (3-Mercaptopropyl Trimethoxysilane) and sulfonate-functionalized silica in DIW. Core flood studies showed that application of silica nanoparticles (NPs) improved water injectivity in sandstone. The change in the measured zeta potential indicated surface modification of sandstone by application of NPs. Computation of the surface forces showed that the modified berea sandstone has net attractive potential with fines (obtained from water/rock interaction) leading to reduction of fines migration, hence improvement of water injectivity. It was also observed that the silica NPs have greater affinity to adhere/adsorb on quartz surfaces than kaolinite in berea core. This was confirmed by scanning electron microscope imaging and isothermal static adsorption tests. Although the stabilizing of NFs almost did not reduce the fine migration, as was qualitatively indicated by the pressure drop, it enhanced the NPs adsorption on the minerals as obtained by isothermal static adsorption tests. The reduction of fines migration due surface modification by silica NP suggests that NPs can be utilized to overcome the problem of formation damage induced during low salinity flooding in sandstones.

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Section: Interaction Between Fines and Porous Mediamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Abhishek

Hamouda

2017

Applied Sciences

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“…The authors speculated that NPs clog the pores and increase local pore pressure to remove oil trapped in larger pores. Behzadi and Mohammadi [29] reported that polymer-coated silica NPs can modulate oil and water IFT and change the wettability of the oil-wet glass micromodel to more waterwet, resulting in higher EOR than unmodified silica nanoparticles. Experiments conducted by Choi, et al [30] found that, when injecting polymer-coated silica NPs into water-wet sandstones, 74.1% oil was recovered, which was comparable to water flood (68.9%) and 72.7% of OOIP from unmodified NPs.…”

Section: Introductionmentioning

confidence: 99%

Polymer-functionalized silica nanoparticles for improving water flood sweep efficiency in Berea sandstones

2020

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Extraction of oil trapped after primary and secondary oil production stages still poses many challenges in the oil industry. Therefore, innovative enhanced oil recovery (EOR) technologies are required to run the production more economically. Recent advances suggest renewed application of surfacefunctionalized nanoparticles (NPs) for oil recovery due to improved stability and solubility, stabilization of emulsions, and low retention on porous media. The improved surface properties make the NPs more appropriate to improve microscopic sweep efficiency of water flood compared to bare nanoparticles, especially in challenging reservoirs. However, the EOR mechanisms of NPs are not well understood. This work evaluates the effect of four types of polymer-functionalized silica NPs as additives to the injection water for EOR. The NPs were examined as tertiary recovery agents in water-wet Berea sandstone rocks at 60 °C. The NPs were diluted to 0.1 wt. % in seawater before injection. Crude oil was obtained from North Sea field. The transport of NPs though porous media, as well as nanoparticles interactions with the rock system, were investigated to reveal possible EOR mechanisms. The experimental results showed that functionalized-silica NPs can effectively increase oil recovery in water-flooded reservoirs. The incremental oil recovery was up to 14% of original oil in place (OOIP). Displacement studies suggested that oil recovery was affected by both interfacial tension reduction and wettability modification, however, the microscopic flow diversion due to pore plugging (log-jamming) and the formation of nanoparticle-stabilized emulsions were likely the relevant explanations for the mobilization of residual oil.

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“…Many researchers have conducted core flooding studies and demonstrated the potential of silica NPs to increase oil recovery [2,[10][11][12][13][14][15][16]. Adsorption and transport of nanoparticles in porous media is of primary importance for subsurface applications as this determines the effectiveness of the nanofluid injection.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Nanoparticles on Fluid/Rock Interactions during Low Salinity Water Flooding of Chalk Reservoirs

2018

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Abstract:The main objective of this work is to address the adsorption of Silica nanoparticles (NPs) dispersed in different brines on chalk surfaces and their effect on fluid/rock interaction. Isothermal static and dynamic adsorption on chalk are addressed here. Isothermal static adsorption showed increased adsorption of NPs at higher salinity. The tests were performed to cover wide range of injection scenarios with synthetic seawater (SSW) and low salinity water (LSW). The selected LSW composition here is based on 1:10 diluted SSW, which has shown to have superior performance compared to other ion compositions. The dynamic adsorption tests of NPs showed reduction of calcite dissolution of about 30% compared to LSW alone. That is, silica nanofluid hinders calcite dissolution i.e., has less effect on chalk matrix integrity which is a major concern in chalk reservoir, if low salinity is employed for enhanced oil recovery. Both scanning electron microscope images and pressure drop across the core during nanofluid injection indicated no throat blockage. Based on ion tracking and the monitored pH, the mechanism(s) for NP adsorption/desorption are suggested. The results from this study suggests a synergy wherein adding relatively small amount of silica NPs can improve the performance of low salinity floods.

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Environmentally responsive surface-modified silica nanoparticles for enhanced oil recovery

Cited by 82 publications

References 46 publications

Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Effect of Various Silica Nanofluids: Reduction of Fines Migrations and Surface Modification of Berea Sandstone

Polymer-functionalized silica nanoparticles for improving water flood sweep efficiency in Berea sandstones

Effect of Silica Nanoparticles on Fluid/Rock Interactions during Low Salinity Water Flooding of Chalk Reservoirs

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