REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method
Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhao, Jinzhou [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018transfer abstract |
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| Schlagwörter: |
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| Umfang: |
14 |
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| Übergeordnetes Werk: |
Enthalten in: One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties - Li, Xue ELSEVIER, 2015transfer abstract, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:57 ; year:2018 ; pages:224-237 ; extent:14 |
| Links: |
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| DOI / URN: |
10.1016/j.jngse.2018.07.008 |
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| Katalog-ID: |
ELV044817592 |
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| 520 | |a Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. | ||
| 520 | |a Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. | ||
| 650 | 7 | |a Gas transport mechanisms |2 Elsevier | |
| 650 | 7 | |a Porous media reconstruction |2 Elsevier | |
| 650 | 7 | |a Shale gas reservoir |2 Elsevier | |
| 650 | 7 | |a Lattice Boltzmann method |2 Elsevier | |
| 700 | 1 | |a Fu, Dongyu |4 oth | |
| 700 | 1 | |a Li, Yongming |4 oth | |
| 700 | 1 | |a Jiang, Youshi |4 oth | |
| 700 | 1 | |a Xu, Wenjun |4 oth | |
| 700 | 1 | |a Chen, Xiyu |4 oth | |
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10.1016/j.jngse.2018.07.008 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000884.pica (DE-627)ELV044817592 (ELSEVIER)S1875-5100(18)30319-6 DE-627 ger DE-627 rakwb eng 620 VZ 690 VZ 50.92 bkl Zhao, Jinzhou verfasserin aut REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Gas transport mechanisms Elsevier Porous media reconstruction Elsevier Shale gas reservoir Elsevier Lattice Boltzmann method Elsevier Fu, Dongyu oth Li, Yongming oth Jiang, Youshi oth Xu, Wenjun oth Chen, Xiyu oth Enthalten in Elsevier Li, Xue ELSEVIER One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties 2015transfer abstract Amsterdam [u.a.] (DE-627)ELV013144928 volume:57 year:2018 pages:224-237 extent:14 https://doi.org/10.1016/j.jngse.2018.07.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 57 2018 224-237 14 |
| spelling |
10.1016/j.jngse.2018.07.008 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000884.pica (DE-627)ELV044817592 (ELSEVIER)S1875-5100(18)30319-6 DE-627 ger DE-627 rakwb eng 620 VZ 690 VZ 50.92 bkl Zhao, Jinzhou verfasserin aut REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Gas transport mechanisms Elsevier Porous media reconstruction Elsevier Shale gas reservoir Elsevier Lattice Boltzmann method Elsevier Fu, Dongyu oth Li, Yongming oth Jiang, Youshi oth Xu, Wenjun oth Chen, Xiyu oth Enthalten in Elsevier Li, Xue ELSEVIER One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties 2015transfer abstract Amsterdam [u.a.] (DE-627)ELV013144928 volume:57 year:2018 pages:224-237 extent:14 https://doi.org/10.1016/j.jngse.2018.07.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 57 2018 224-237 14 |
| allfields_unstemmed |
10.1016/j.jngse.2018.07.008 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000884.pica (DE-627)ELV044817592 (ELSEVIER)S1875-5100(18)30319-6 DE-627 ger DE-627 rakwb eng 620 VZ 690 VZ 50.92 bkl Zhao, Jinzhou verfasserin aut REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Gas transport mechanisms Elsevier Porous media reconstruction Elsevier Shale gas reservoir Elsevier Lattice Boltzmann method Elsevier Fu, Dongyu oth Li, Yongming oth Jiang, Youshi oth Xu, Wenjun oth Chen, Xiyu oth Enthalten in Elsevier Li, Xue ELSEVIER One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties 2015transfer abstract Amsterdam [u.a.] (DE-627)ELV013144928 volume:57 year:2018 pages:224-237 extent:14 https://doi.org/10.1016/j.jngse.2018.07.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 57 2018 224-237 14 |
| allfieldsGer |
10.1016/j.jngse.2018.07.008 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000884.pica (DE-627)ELV044817592 (ELSEVIER)S1875-5100(18)30319-6 DE-627 ger DE-627 rakwb eng 620 VZ 690 VZ 50.92 bkl Zhao, Jinzhou verfasserin aut REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Gas transport mechanisms Elsevier Porous media reconstruction Elsevier Shale gas reservoir Elsevier Lattice Boltzmann method Elsevier Fu, Dongyu oth Li, Yongming oth Jiang, Youshi oth Xu, Wenjun oth Chen, Xiyu oth Enthalten in Elsevier Li, Xue ELSEVIER One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties 2015transfer abstract Amsterdam [u.a.] (DE-627)ELV013144928 volume:57 year:2018 pages:224-237 extent:14 https://doi.org/10.1016/j.jngse.2018.07.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 57 2018 224-237 14 |
| allfieldsSound |
10.1016/j.jngse.2018.07.008 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000884.pica (DE-627)ELV044817592 (ELSEVIER)S1875-5100(18)30319-6 DE-627 ger DE-627 rakwb eng 620 VZ 690 VZ 50.92 bkl Zhao, Jinzhou verfasserin aut REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. Gas transport mechanisms Elsevier Porous media reconstruction Elsevier Shale gas reservoir Elsevier Lattice Boltzmann method Elsevier Fu, Dongyu oth Li, Yongming oth Jiang, Youshi oth Xu, Wenjun oth Chen, Xiyu oth Enthalten in Elsevier Li, Xue ELSEVIER One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties 2015transfer abstract Amsterdam [u.a.] (DE-627)ELV013144928 volume:57 year:2018 pages:224-237 extent:14 https://doi.org/10.1016/j.jngse.2018.07.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 57 2018 224-237 14 |
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Enthalten in One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties Amsterdam [u.a.] volume:57 year:2018 pages:224-237 extent:14 |
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Enthalten in One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties Amsterdam [u.a.] volume:57 year:2018 pages:224-237 extent:14 |
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One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties |
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In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. 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One-step solution-combustion synthesis of complex spinel titanate flake particles with enhanced lithium-storage properties |
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rev-scale simulation of gas transport in shale matrix with lattice boltzmann method |
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REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method |
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Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. |
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Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. |
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Shale gas reservoirs have obscured transport properties owing to the complex micro-porous structure and extremely low permeability. In this study, a lattice Boltzmann (LB) model at representative elementary volume (REV) scale has been proposed to simulate gas transport in a 2-dimensional (2D) micro-porous media reconstructed by optimized quartet structure generation set (QSGS) method. The velocity distributions and apparent permeability of gas transport inside the reconstructed porous media are demonstrated and analyzed, and the gas flow mechanisms such as slippage, gas adsorption and surface diffusion have been investigated. The simulation results indicate that gas displays considerable different flow behaviors due to the effects of gas slippage, and the apparent permeability is significantly related to the Knudsen number (Kn). Moreover, the increasing adsorbed gas concentration in the pore surface has great impact on the gas transport behaviors, which is accounting for the decreasing apparent permeability. Surface diffusion can strongly affect the apparent permeability, but the strength of this effect is subject to the adsorbed gas concentration. It is hoped that this study can provide some novel insights into the investigation of gas transport in shale gas reservoirs. |
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REV-scale simulation of gas transport in shale matrix with lattice Boltzmann method |
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