A novel approach for quantitative characterization of aqueous in-situ foam dynamic structure based on fractal theory

Chen, Hailong; Chen, Zhuo; Wei, Bing; Jiang, Qi

doi:10.1016/j.fuel.2023.129149

Cited by 6 publications

(2 citation statements)

References 51 publications

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“…Bing Wei et al applied nano cellulose fiber (L-NCF) to the interface stability of foam and found that the hydrophobic interaction between surfactant and L-NCF constructed an elastic interface for foam, and the stability was five times that of pure surfactant foam. There are also studies on the expansion of foam properties of other polymers, − gels, and in situ foams. − Therefore, foam fluid still has great application potential in plugging and profile control, and its mechanism needs to be further studied. In view of its many macroexperimental studies, it can be further studied in micro- and numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation Research on Microprofile Control Mechanism of Foam in Fractured Media Based on Level Set Method

Wang,

Yu,

Chen

et al. 2024

Langmuir

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Fractured reservoirs are an important source of oil and gas energy. After depletion of production, the production capacity of this reservoir decreases rapidly. Effective profile control is needed to improve the sweep efficiency and reservoir heterogeneity. Foam can solve such problems, but its profile control mechanism is not fully understood. Based on this, this paper uses the level set method to study the microscale control mechanism of foam in fractured media. The results show that artificial fractures and high-permeability microfractures are tighter than natural fractures, the Jamin effect of foam is stronger, and the secondary foaming ability is better. Therefore, the plugging ability of foam to natural fractures is far less than that of foam to artificial fractures and highpermeability microfractures. The larger the fracture opening, the larger the foam volume and the smaller the flow rate. As the opening ratio increases gradually, the generated foam flows more to the natural fractures with a large opening, and the effect of foam blocking large fractures becomes worse. The diversion rate curves of different opening ratios show that the foam has a good profile control effect when the opening ratios are 4:1 and 2:1, and even the diversion rate overturns, while the profile control diversion effect is poor when the opening ratio is 10:1, so it cannot play an effective role in profile control. The foam shows the profile control process of preferentially plugging the high-permeability area and allowing more subsequent fluids to enter the low-permeability area. The research reveals the profile control mechanism of foam on fractured reservoirs from the micro level, which is the supplement and verification of relevant macro research and provides a theoretical basis for the efficient development of fractured reservoirs.

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Section: Introductionmentioning

confidence: 99%

Dynamic Simulation Research on Microprofile Control Mechanism of Foam in Fractured Media Based on Level Set Method

Wang,

Yu,

Chen

et al. 2024

Langmuir

Self Cite

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“…About 80% of heavy oil in China is produced via CSS [9]. Thus far, various new technologies for heavy oil recovery have emerged one after another, but steam huff and puff is still the most effective and common method for heavy oil recovery [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Stabilization Mechanism of Three-Phase Foam: Improving Heavy Oil Recovery via Steam Stimulation through Two-Dimensional Visual Model

Wu,

Lun,

Tang

et al. 2023

Processes

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There is a problem of a rapid decline in production caused by the repeated heating of the near-wellbore zone during steam stimulation. Finding a suitable foam system to expand the area of the steam chamber and slow down the rapid production of hot water during the recovery process can effectively improve the effect of steam stimulation. In this paper, CGS foam was prepared with high-temperature-resistant surfactant GD, graphite particles, and clay particles. Through the study of foam properties, it was found that with the addition of particles, the strength of the foam’s liquid film, half-life time, and temperature resistance was greatly improved. The appropriate permeability of the CGS foam and the movement characteristics of it in formations with different permeabilities were studied through a plugging experiment with a sand pack. The plugging performances of the GD foam, CGS foam, and pure particles in a simulated reservoir were compared. The development of the steam cavity during the steam stimulation process and the influence of injecting GD foam and CGS foam on the flow in the simulated reservoir were studied through a two-dimensional visualization model. The temperature resistance and stability of the CGS foam were better than those of GD foam in the simulated formation.

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Impacts of hydrophobic chain length on foam stability and CO2 geo-sequestration capacity of sugar-based nonionic surfactants: Molecular dynamics simulation and laboratory experiments

Wen,

Zeng,

et al. 2024

Journal of Environmental Chemical Engineering

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A novel approach for quantitative characterization of aqueous in-situ foam dynamic structure based on fractal theory

Cited by 6 publications

References 51 publications

Dynamic Simulation Research on Microprofile Control Mechanism of Foam in Fractured Media Based on Level Set Method

Dynamic Simulation Research on Microprofile Control Mechanism of Foam in Fractured Media Based on Level Set Method

Characteristics and Stabilization Mechanism of Three-Phase Foam: Improving Heavy Oil Recovery via Steam Stimulation through Two-Dimensional Visual Model

Impacts of hydrophobic chain length on foam stability and CO2 geo-sequestration capacity of sugar-based nonionic surfactants: Molecular dynamics simulation and laboratory experiments

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