Enhancing foam stability and addressing asphaltene deposition for improved oil recovery in CCUS applications using aerogel nanoparticles

Lu, Teng; Li, Zhaomin; Du, Liping

doi:10.1016/j.cej.2023.148290

Cited by 14 publications

(2 citation statements)

References 54 publications

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“…Due to its small molecular size, CO2 competed for space with resin dispersed around the asphaltene after entering the crude oil, leading to the disruption of the micellar equilibrium and the precipitation of asphaltene particles. With an increase in the proportion and pressure of CO2 injection, more CO2 dissolved in the crude oil, causing the precipitated asphaltene particles to gradually aggregate and coalesce, eventually leading to deposition [35]. Furthermore, experimental results indicated that as pressure increased, the trend of asphaltene deposition became more pronounced.…”

Section: Influence Of Co2 Injection Ratio On Asphaltene Depositionmentioning

confidence: 99%

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Liu,

Zhu,

et al. 2024

Energies

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Carbon capture, utilization, and storage (CCUS) technology has emerged as a pivotal measure in mitigating global climate change. Notably, CO2-EOR is esteemed for its dual function of sequestering CO2 and enhancing oil recovery. However, this process presents challenges related to asphaltene deposition during CO2 flooding, leading to reservoir damage, such as pore plugging. This study systematically manipulated the factors inducing CO2-induced asphaltene deposition, elucidating the mechanisms and magnitudes of asphaltene precipitation. Additionally, the study investigated the efficacy of carbon quantum dots (CQDs) in mitigating asphaltene deposition. Experimental findings indicated a positive correlation between asphaltene deposition and level of asphaltene content, CO2 injection ratio, and temperature. Moreover, with an increase in experimental pressure, the asphaltene deposition rate demonstrated an initial increase followed by a subsequent decline. Leveraging their favorable compatibility with asphaltene, CQDs effectively suppressed the aggregation behavior of asphaltene. In the presence of CQDs, the onset of asphaltene precipitation was delayed from 45 V% to 55 V%, with the highest inhibition rate reaching approximately 36% at an optimal CQD concentration of 20 mg/L. This study proposes a novel approach to address asphaltene deposition issues in CO2-EOR processes, contributing to the enhancement of recovery rates in low-permeability reservoirs.

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Section: Influence Of Co2 Injection Ratio On Asphaltene Depositionmentioning

confidence: 99%

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Liu,

Zhu,

et al. 2024

Energies

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“…Therefore, in order to reduce the damage caused by water flooding to the reservoir, increase the efficiency of water injection operations and oil production, and prolong the production life of oil wells, studying the law of water injection damage is essential to achieve efficient water flooding development. 19,20 Research on the law of water injection damage typically employs two main methods: mathematical modeling and physical experimentation, each with its own characteristics. Tale et al 21 predicted the transition time from suspended particles in injected water to filter cake formation by establishing mathematical relationships.…”

Section: Introductionmentioning

confidence: 99%

The Reservoir Injury Rules of Water Injection to an Ultralow Permeability Reservoir: Experimental Research Based on Core-NMR and Microfluidic Technology

Zhu,

Tang,

et al. 2024

Energy Fuels

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Water flooding is one of the important methods for developing ultralow permeability reservoirs. However, due to the high clay mineral content in these reservoirs and poor compatibility between injected water and formation fluids (such as formation water), the reservoirs suffer damage. Previous studies have lacked research on the dynamic damage patterns of internal structures during the water flooding process in ultralow permeability cores. Addressing this, this study focuses on an ultralow permeability reservoir in northwest China, analyzing the pore-permeability characteristics, pore structures, and clay mineral composition of core samples. Using core nuclear magnetic resonance displacement technology, it examines microstructural changes in pore spaces at various locations and employs microfluidic experimental techniques to replicate the transport behavior of scale particles during water flooding in low permeability porous media. Together, these findings reveal the damage mechanisms of this ultralow permeability reservoir, where free particles migrate with injected water to clog the rear part of the reservoir, significantly reducing the reach of the water flood. Therefore, for the water injection development of low-permeability oil reservoirs, attention should be paid to improving the quality of the injected water. Functional chemicals such as scale inhibitors and clay stabilizers should be added to the injected water in advance, and reservoir modification operations such as acidizing and fracturing should be carried out promptly. This minimizes the damage of these free particles to the deep reservoir and increases the sweep efficiency of water flooding.

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Research progress of nanoparticles enhanced carbon dioxide foam stability and assisted carbon dioxide storage: A review

Sun,

Jia,

et al. 2024

Chemical Engineering Journal

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Enhancing foam stability and addressing asphaltene deposition for improved oil recovery in CCUS applications using aerogel nanoparticles

Cited by 14 publications

References 54 publications

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots

The Reservoir Injury Rules of Water Injection to an Ultralow Permeability Reservoir: Experimental Research Based on Core-NMR and Microfluidic Technology

Research progress of nanoparticles enhanced carbon dioxide foam stability and assisted carbon dioxide storage: A review

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