Protected Polyacrylamide Nanostructure Used for Enhanced Oil Recovery Process

Tamsilian, Yousef; Shaban, Masoom; Ayatollahi, Shahab; Cal, José C. de la; Sheng, James J.

doi:10.3997/2214-4609.201601508

Cited by 3 publications

(3 citation statements)

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“…Encapsulation of water-soluble polymers by a lipophilic polymer has been introduced to protect the polymers against degradation and operational conditions [12] . Core and shell (CS) polymers are structured composite particles, which may be suggested for reservoirs with harsh conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The low viscosity decreased the cost of the polymer flooding process compared to the traditional polymers used in EOR [5] . Moreover, the shell polymer protects the core polymer (e.g., PNIPAM) from degradation against the harsh reservoir conditions and tensions applied during the EOR process [5,12] . As the aqueous phase comes in contact with the oil phase, the PS shell is dissolved in the oil, and PNIPAM is released; hence, PNIPAM chains are swelled in the aqueous phase and expanded [27] .…”

Section: Introductionmentioning

confidence: 99%

“…polymerization To find the optimum time for adding styrene to the polymerization process, PNIPAM polymerization versus time was investigated. Conversion of the synthesized PNIPAM was calculated by Equation13, and the results are shown in Table4.𝐶𝑜𝑛𝑣𝑒𝑟𝑠𝑖𝑜𝑛 𝑓𝑎𝑐𝑡𝑜𝑟 =𝑊𝑒𝑖𝑔𝑡ℎ 𝑜𝑓 𝑠𝑦𝑛𝑡ℎ𝑒𝑠𝑖𝑧𝑒𝑑 𝑝𝑜𝑙𝑦𝑚𝑒𝑟 𝑃𝑟𝑖𝑚𝑎𝑟𝑦 𝑚𝑜𝑛𝑜𝑚𝑒𝑟 𝑤𝑒𝑖𝑔𝑡ℎ × 100(12) …”

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confidence: 99%

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Optimizing synthesis and application of an enhanced oil recovery agent: stability assessment of the optimized nanostructured PNIPAM/PS core–shell polymer using a developed DLVO-based model

Mohammadipour,

Amiri,

Dashti

et al. 2024

Colloid Polym Sci

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To improve the efficiency of hydrophilic polymers in oil reservoirs, a method encapsulates the polymer within a protective shell, safeguarding the core polymer and enabling controlled release in demanding, high-temperature conditions. Poly(N-isopropylacrylamide) nanoparticles are encapsulated with Poly styrene shells through emulsion polymerization in this study.Varying the amounts of shell monmer and crosslinking agents resulted thick, sphere-shaped shells with homogeneous morphology, which protects the core polymer and enabling controlled release. Structural and morphological properties are characterized using Fourier-transform infrared spectroscopy (FTIR), Proton nuclear magnetic resonance (H 1 NMR), Dynamic Light Scattering (DLS), and Scanning electron microscope (SEM) imaging. Increasing the styrene amounts lead to larger particles, while higher crosslinker amounts result in a narrower size distribution. Thermal testing indicates heat resistance up to 300°C, suitable for EOR applications. Rheological tests determine an optimal 30-day release for the PNIPAM core, with the CS polymer showing increased viscosity under harsh conditions. DLVO theory and experimental results demonstrate good stability and energy barriers at room temperature, but decreased stability and increased agglomeration at higher temperatures. Thickening the styrene shell leads to particle agglomeration and unsuitable stability. The study confirms the effectiveness of the model in analyzing CS colloidal latex systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Optimizing synthesis and application of an enhanced oil recovery agent: stability assessment of the optimized nanostructured PNIPAM/PS core–shell polymer using a developed DLVO-based model

Mohammadipour,

Amiri,

Dashti

et al. 2024

Colloid Polym Sci

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Research progress and prospect of silica-based polymer nanofluids in enhanced oil recovery

Pan

Zhang

Yang

et al. 2023

Nanotechnology Reviews

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In recent years, silica-based polymer nanofluids (NFs) have attracted more and more attention because they can enhance temperature and salt tolerance. This study summarized the research progress and prospects of silica-based polymer NFs in enhanced oil recovery (EOR). First, the synthesis method and the effect on silica-based polymer NFs were studied. Research progress in rheology, wettability, viscoelasticity, interfacial tension, adsorption, porous media flow, and emulsion stability were reviewed, and the mechanism for EOR was expounded. Then, the mechanical properties of silica-based polymer NFs and the interaction between silica and polymer were discussed by molecular dynamics simulation. And the progress of research on macroscopic reservoir simulation was explored. Finally, the related auxiliary technologies were introduced, and future research directions were put forward. The results of this study will help researchers better understand the mechanism and research progress of silica-based polymer NFs in EOR.

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Optimizing Synthesis and Application of an Enhanced Oil Recovery Agent: Stability Assessment of the Optimized Nanostructured PNIPAM/PS Core-Shell Polymer using a Developed DLVO-based Model

Mohammadipour,

Amiri,

Dashti

et al. 2024

Preprint

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To improve the efficiency of hydrophilic polymers in oil reservoirs, a method encapsulates the polymer within a protective shell, safeguarding the core polymer and enabling controlled release in demanding, high-temperature conditions. Poly(N-isopropylacrylamide) nanoparticles are encapsulated with Poly styrene shells through emulsion polymerization in this study. Varying the amounts of shell monmer and crosslinking agents resulted thick, sphere-shaped shells with homogeneous morphology, which protects the core polymer and enabling controlled release. Structural and morphological properties are characterized using Fourier-transform infrared spectroscopy (FTIR), Proton nuclear magnetic resonance (H1NMR), Dynamic Light Scattering (DLS), and Scanning electron microscope (SEM) imaging. Increasing the styrene amounts lead to larger particles, while higher crosslinker amounts result in a narrower size distribution. Thermal testing indicates heat resistance up to 300°C, suitable for EOR applications. Rheological tests determine an optimal 30-day release for the PNIPAM core, with the CS polymer showing increased viscosity under harsh conditions. DLVO theory and experimental results demonstrate good stability and energy barriers at room temperature, but decreased stability and increased agglomeration at higher temperatures. Thickening the styrene shell leads to particle agglomeration and unsuitable stability. The study confirms the effectiveness of the model in analyzing CS colloidal latex systems.

show abstract

Protected Polyacrylamide Nanostructure Used for Enhanced Oil Recovery Process

Cited by 3 publications

References 0 publications

Optimizing synthesis and application of an enhanced oil recovery agent: stability assessment of the optimized nanostructured PNIPAM/PS core–shell polymer using a developed DLVO-based model

Optimizing synthesis and application of an enhanced oil recovery agent: stability assessment of the optimized nanostructured PNIPAM/PS core–shell polymer using a developed DLVO-based model

Research progress and prospect of silica-based polymer nanofluids in enhanced oil recovery

Optimizing Synthesis and Application of an Enhanced Oil Recovery Agent: Stability Assessment of the Optimized Nanostructured PNIPAM/PS Core-Shell Polymer using a Developed DLVO-based Model

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