Fabrication, optimization and characterization of preformed-particle-gel containing nanogel particles for conformance control in oil reservoirs

Esfahlan, Mina Seidy; Khodapanah, Elnaz; Tabatabaei‐Nezhad, Seyyed Alireza; Salami‐Kalajahi, Mehdi

doi:10.1007/s00289-021-03843-2

Cited by 4 publications

(2 citation statements)

References 71 publications

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“…Consequently, polymer nanofluids can be employed as profile control agents. For instance, Esfahlan et al [37] employed a reverse-phase microemulsion polymerization method to produce nanogel microspheres. The swelling behavior and rheological properties of these microspheres were tested.…”

Section: Organic Nanofluidsmentioning

confidence: 99%

Research Progress in Nanofluid-Enhanced Oil Recovery Technology and Mechanism

Tong,

Fan,

Liu

et al. 2023

Molecules

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Nanofluid-enhanced oil recovery (EOR) technology is an innovative approach to enhancing oil production in oilfields. It entails the dispersion of nanoparticles within a fluid, strategically utilizing the distinctive properties of these nanoparticles (NPs) to engage with reservoir rocks or crude oil, resulting in a significant enhancement of the oil recovery rate. Despite the notable advantages of nanofluid EOR technology over conventional oil recovery methods such as binary and ternary flooding, practical implementations continue to grapple with a range of pressing challenges. These challenges encompass concerns regarding the economic viability, stability, and adaptability of nanomaterials, which pose significant barriers to the widespread adoption of nanofluid EOR technology in the oil field. To tackle these challenges, addressing the current issues may involve selecting simpler and more readily available materials coupled with straightforward material modification techniques. This approach aims to more effectively meet the requirements of large-scale on-site applications. Within this framework, this review systematically explores commonly employed nanofluids in recent years, including inorganic nanofluids, organic nanofluids, and composite nanofluids. It categorizes the research advancements in optimizing modification techniques and provides a comprehensive overview of the mechanisms that underpin nanofluid EOR technology and its practical applications in oilfields. This comprehensive review aims to offer valuable references and serve as a solid foundation for subsequent research endeavors.

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Section: Organic Nanofluidsmentioning

confidence: 99%

Research Progress in Nanofluid-Enhanced Oil Recovery Technology and Mechanism

Tong,

Fan,

Liu

et al. 2023

Molecules

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“…Due to the strong and large-scale flow capacity of fractures, combined with the dense matrix and high injection water pressure, it requires a high strong gel with good mechanical properties to effectively plug the fracture water channeling of a fractured low-permeability reservoir [11,12]. Presently, the underground cross-linked acrylamide polymer gel system is the most widely used water plugging agent, known for its mature technology, low cost, and safety [11,[13][14][15]. This system (gelant) has a low initial viscosity under surface conditions, so it has a good injection performance.…”

Section: Introductionmentioning

confidence: 99%

Study on a Strong Polymer Gel by the Addition of Micron Graphite Oxide Powder and Its Plugging of Fracture

Shi,

Zhang,

Zhang

et al. 2024

Gels

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It is difficult to plug the fracture water channeling of a fractured low-permeability reservoir during water flooding by using the conventional acrylamide polymer gel due to its weak mechanical properties. For this problem, micron graphite powder is added to enhance the comprehensive properties of the acrylamide polymer gel, which can improve the plugging effect of fracture water channeling. The chemical principle of this process is that the hydroxyl and carboxyl groups of the layered micron graphite powder can undergo physicochemical interactions with the amide groups of the polyacrylamide molecule chain. As a rigid structure, the graphite powder can support the flexible skeleton of the original polyacrylamide molecule chain. Through the synergy of the rigid and flexible structures, the viscoelasticity, thermal stability, tensile performance, and plugging ability of the new-type gel can be significantly enhanced. Compared with a single acrylamide gel, after adding 3000 mg/L of micrometer-sized graphite powder, the elastic modulus, the viscous modulus, the phase transition temperature, the breakthrough pressure gradient, the elongation at break, and the tensile stress of the acrylamide gel are all greatly improved. After adding the graphite powder to the polyacrylamide gel, the fracture water channeling can be effectively plugged. The characteristics of the networked water flow channel are obvious during the injected water break through the gel in the fracture. The breakthrough pressure of water flooding is high. The experimental results are an attempt to develop a new gel material for the water plugging of a fractured low-permeability reservoir.

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