Analysis of the effect of particle size on permeability in hydrate-bearing porous media using pore network models combined with CT

Wang, Jiaqi; Zhao, Jiafei; Zhang, Yi; Wang, Dayong; Li, Yanghui; Song, Yongchen

doi:10.1016/j.fuel.2015.09.044

Cited by 151 publications

(42 citation statements)

References 31 publications

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“…In addition to the pore structure, the distribution of pores and solid particles also affects the rocks transport capacity. Pure sandstone formed by larger-size grain has larger permeability and porosity (Vidal et al, 2009;Byon and Kim, 2013;Wang et al, 2016b). Size, distribution, and contact relationship of pores and solids or grains are clearly displayed in thin section.…”

Section: Petrophysical Characterization Based On Thin Section Analysismentioning

confidence: 99%

“…X-ray CT can achieve wider field of view and very high resolution in 3D space (Ge et al, 2015). Despite the lower resolution in comparison with µxCT and SEM images, the thin section images have other advantages such as a wider range of view, saved time and cheaper availability for petrophysical studies, such as pore microstructure (Desbois et al, 2011;Rabbani et al, 2014a;Borazjani et al, 2016;Gundogar et al, 2016;Rabbani et al, 2016;Xiao et al, 2016), mineral recognition and classification (Hofmann et al, 2013;Asmussen et al, 2015;Izadi et al, 2015;Izadi et al, 2017b), specific surface area (Rabbani and Jamshidi, 2014;Rabbani et al, 2014b), elastic modulus (Arns et al, 2002;Dvorkin et al, 2011;Madonna et al, 2012;Saxena and Mavko, 2016), rock type determination (Mynarczuk, 2010;Mynarczuk et al, 2013;Ge et al, 2015;Mollajan et al, 2016), pore-grain analysis (Rabbani and Jamshidi, 2014;Rabbani et al, 2014b;Song et al, 2016), flowing property (Peng et al, 2016;Wang et al, 2016b). Using thin section images, the interconnected pore structure can be marked out visually as they are filled by color epoxy resin.…”

Section: Petrophysical Characterization Based On Thin Section Analysismentioning

confidence: 99%

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Applications of digital core analysis and hydraulic flow units in petrophysical characterization

Chen

Zhou

2017

Adv. Geo-Energ. Res.

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Conventional petrophysical characterizations are often based on direct laboratory measurements. Although they provide accurate results, such measurements are time-consuming and limited by instrument and environment. What's more, in the georesource energy industry, availability and cuttings of core plugs are difficult. Because of these reasons, virtual digital core technology is of increasing interest due to its capability of characterizing rock samples without physical cores and experiments. Virtual digital core technology, also known as digital rock physics, is used to discover, understand and model relationships between material, fluid composition, rock microstructure and macro equivalent physical properties. Based on actual geological conditions, modern mathematical methods and imaging technology, the digital model of the core or porous media is created to carry out physical field numerical simulation. In this review, the methods for constructing digital porous media are introduced first, then the characterization of thin rock cross section and the capillary pressure curve using scanning electron microscope image under mixed wetting are presented. Finally, we summarize the hydraulic flow unit methods in petrophysical classification.Keywords: Digital core, porous media, petrophysical characterization, thin section, mercury injection capillary pressure.Citation: Chen, X., Zhou, Y. Applications of digital core analysis and hydraulic flow units in petrophysical characterization. Adv.

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Section: Petrophysical Characterization Based On Thin Section Analysismentioning

confidence: 99%

Section: Petrophysical Characterization Based On Thin Section Analysismentioning

confidence: 99%

Applications of digital core analysis and hydraulic flow units in petrophysical characterization

Chen

Zhou

2017

Adv. Geo-Energ. Res.

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“…Therefore, it is of great significance to apply the pore network model to the field of heat and mass transfer simulation of porous media. At present, there are three types of pore network models, including the conceptual model [Xie, Wang, Wang et al (2016)], statistical model [Banerjee, Bevilacqua, Eifert et al (2019); Gharedaghloo, Price, Rezanezhad et al (2018); Salama (2018)] and image reconstruction model [Ma, Sanchez, Wu et al (2014); Wang, Zhao, Zhang et al (2016)].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Heat and Mass Transfer in a Grain Pile on the Basis of a 2D Irregular Pore Network

Chen¹,

Huang²,

Wang³

et al. 2019

Fluid Dynamics &Amp; Materials Processing

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The so-called pore network model has great advantages in describing the process of heat and mass transfer in porous media. In order to construct a random twodimensional (2D) irregular pore network model for an unconsolidated material, image processing technology was used to extract the required topological and geometric information from a 2D sample of soybean particles, and a dedicated algorithm was elaborated to merge some adjacent small pores. Based on the extracted information, a 2D pore network model including particle information was reconstructed and verified to reflect the pore structure of discrete particles. This method was used to reconstruct a random 2D irregular pore network model of wheat. Accordingly, a multi-scale heat and mass transfer model was implemented to simulate the drying of wheat. The simulation results were consistent with the experimental results, which indicates that the reconstructed irregular pore network model can effectively simulate the real pore structure inside unconsolidated porous media. The present approach may be regarded as the foundation for establishing in the future a three-dimensional pore network model and studying the heat and mass transfer process in a grain pile.

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“…Physical properties of the hydrate-hosting medium, such as particle size, thermal conduction characteristics, and mechanical properties, are important elements for these assessments [25,26]. Generally, particle size which Energies 2017, 10, 531 3 of 16 governs the sediment permeability plays an important role in affecting the occurring morphology and saturation of gas hydrate [27][28][29], and further affects water and gas production. Similarly, heat transfer from within the reservoir and from the over-and under-burden layers significantly influence the hydrate decomposition rate and the percentage of gas production [30,31].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Physical Properties of Hydrate Sediments Recovered from the Pearl River Mouth Basin in the South China Sea: Preliminary Investigation for Gas Hydrate Exploitation

et al. 2017

Self Cite

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Laboratory based research on the physical properties of gas hydrate hosting sediment matrix was carried out on the non-pressurized hydrate-bearing sediment samples from the Chinese Guangzhou Marine Geological Survey 2 (GMGS2) drilling expedition in the Pearl River Mouth (PRM) basin. Measurements of index properties, surface characteristics, and thermal and mechanical properties were performed on ten sediment cores. The grains were very fine with a mean grain size ranging from 7 to 11 µm throughout all intervals, which provide guidance for the option of a screen system. Based on X-ray Computed Tomography (CT) and SEM images, bioclasts, which could promote hydrate formation, were not found in the PRM basin. However, the flaky clay might be conducive to hydrate formation in pore spaces. The measured sediment thermal conductivities are relatively low compared to those measured at other mines, ranging from 1.3 to 1.45 W/(m·K). This suggests that thermal stimulation may not be a good option for gas production from hydrate-bearing sediments in the PRM basin, and depressurization could exacerbate the problems of gas hydrate reformation and/or ice generation. Therefore, the heat transfer problem needs to be considered when exploiting the natural gas hydrate resource within these areas. In addition, the results of testing the mechanical property indicate the stability of hydrate-bearing sediments decreases with hydrate dissociation, suggesting that a holistic approach should be considered when establishing a drilling platform. Both the heat-transfer characteristic and mechanical property provide the foundation for the establishment of a safe and efficient production technology for utilizing the hydrate resource.

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Analysis of the effect of particle size on permeability in hydrate-bearing porous media using pore network models combined with CT

Cited by 151 publications

References 31 publications

Applications of digital core analysis and hydraulic flow units in petrophysical characterization

Applications of digital core analysis and hydraulic flow units in petrophysical characterization

Simulation of Heat and Mass Transfer in a Grain Pile on the Basis of a 2D Irregular Pore Network

Analysis of the Physical Properties of Hydrate Sediments Recovered from the Pearl River Mouth Basin in the South China Sea: Preliminary Investigation for Gas Hydrate Exploitation

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