Review of recent advances in polyethylenimine crosslinked polymer gels used for conformance control applications

Ghriga, Mohammed Abdelfetah; Grassl, Bruno; Gareche, Mourad; Khodja, Mohamed; Lebouachera, Seif El Islam; Andreu, Nathalie; Drouiche, Nadjib

doi:10.1007/s00289-019-02687-1

Cited by 61 publications

(39 citation statements)

References 76 publications

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“…Due to their polycationic character, PEIs are used for various applications including detergents, cosmetics, adhesives, printing inks, paper, wood laminates, cement, and bricks. [ 86,87 ] Dong et al introduced an easily accessible PEI polymer (linear; M w = 25 000) to the MAPbI 3− x Cl x perovskite precursor and used it to tune the crystal growth of thin perovskite films. [ 88 ] The performance of the corresponding PSCs was improved when the PEI was added.…”

Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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Polymers or polymeric materials are used as additives for promoting the nucleation and crystallization of perovskite films to increase the crystal grain size. Due to their high molecular weight, polymers remain within perovskite‐crystal grain boundaries (GBs), where they passivate trap sites. Furthermore, some polymers function as charge‐transport materials in interfacial layers to effectively separate charge carriers and reduce charge recombination. Certain hydrophobic polymers protect perovskite films against moisture, whereas elastic polymers contribute to the mechanical resilience of perovskite films by crosslinking and self‐healing. Although polymeric additives have become essential to perovskite fabrication, a thorough review has not summarized their application to perovskite solar cells. Therefore, various strategies are comprehensively discussed for incorporating typical polymers and 1D polymeric materials into perovskite materials to improve the efficiency and stability of perovskite devices. Herein, thermoplastic, hydrophilic, and conductive polymers and elastomers are focused and related works are chronologically discussed to clearly elucidate the advances in perovskite devices.

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Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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“…In these gels, the crosslinks generating the three-dimensional structures are formed by covalent bonds between the amide groups of the polymer and the functional groups of the organic crosslinking agents. Due to the greater stability that covalent bonds give to gels, these systems are promising for application in reservoirs with higher salinity and temperature, and thus, have advantages over metal ion crosslinked systems (Al-Muntasheri et al, 2008a, b;Chung et al, 2011; Ghriga et al, 2019;Yavari-Gohar et al, 2010;Zhu et al, 2017c). These gels are called Organically Crosslinked Gels (OCGs) and for their formation, the polyacrylamide can be used in its homopolymer (PAM), partially hydrolyzed (PHPA) or copolymerized form, such as: PAM-NVP, PAM-AMPS or PAM-tBA.…”

Section: Acrylamide-based Polymers With Organically Crosslinked Systemsmentioning

confidence: 99%

A comprehensive review ofin situpolymer hydrogels for conformance control of oil reservoirs

Aguiar

Oliveira

Mansur

2020

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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In fractured reservoirs, fluids injected Enhanced Oil Recovery (EOR) are channeled through the fracture zones and travel through highly permeable regions, failing to displace part of the oil, and decreasing oil recovery efficiency. To solve these problems, the conformance control technique is now widely used, as it allows the reservoir to be swept totally, similar to the ideal condition. In this context, polyacrylamide-based polymer gel systems can be used to block the high-permeability regions of the rock matrix, forming in situ hydrogels that block the rock pores, avoiding the channeling of the fluids, and increasing the oil production. These polyacrylamide-based hydrogels can be crosslinked by inorganic (metal ions) or organic substances, and various systems are used for conformance control. Due to the greater stability of the bond formed between the polymer and the organic crosslinker, these systems are now used in higher temperature reservoirs. In order to produce hydrogels with higher resistance to severe salinity and temperature conditions, nanoparticles are applied to form systems with good mechanical resistance, and high thermal stability. These have presented promising results for conformance control.

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“…Much hydrocarbon remains upswept at the end of a waterflooding operation because of the injected water channeled through high-permeable zones. Several attempts have been made to increase the sweep efficiency and correct the conformance problem in heterogeneous reservoirs ( de Aguiar et al, 2020, Ashrafizadeh et al, 2017Farasat et al, 2017;Ghriga et al, 2019;Hashmet et al, 2017;Koochakzadeh et al, 2021a;Sadeghnejad and Masihi, 2017). Among them, pH-sensitive microgel injection recently received attention.…”

Section: Introductionmentioning

confidence: 99%

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Tohidi

Sadeghnejad

2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Waterflooding is widely implemented to enhance oil recovery. The displacement efficiency of this method depends on multiple factors, including makeup water properties, native oil, and formation rock. The incompatibility of the injected fluid with the pore fluid can result in a chemical non-equilibrium state within porous media that may result in different chemical reactions that depend on the type and number of the existing components within the system. The present research aims to develop a mathematical model capable of handling multiple geochemical reactions to predict pH and ions concentration during an acid injection while considering alterations of rock and fluid properties. The dependency of fluid properties (viscosity and density) is considered based on the system ionic concentration, which can be more crucial in high saline media. The validity of the developed model was evaluated using the experimental literature data. The results reveal that in addition to the effect of injected fluid pH, the process efficiency can be influenced by the composition of the injected fluid. In other words, fluid properties dependency on salinity and the injected fluid composition is significant during geochemical simulations. Comparing homogenous and heterogenous mineral distribution shows an insignificant sensitivity to the amount heterogeneity while the total mineral contents remain constant in both cases.

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Review of recent advances in polyethylenimine crosslinked polymer gels used for conformance control applications

Cited by 61 publications

References 76 publications

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

A comprehensive review ofin situpolymer hydrogels for conformance control of oil reservoirs

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

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