Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties
Equivalent fracture models are widely used for simulations of groundwater exploitation, geothermal reservoir production, and solute transport in groundwater systems. Equivalent permeability has a great impact on such processes. In this study, equivalent permeability distributions are investigated ba...
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| Format: | Article |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/6751349 |
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| author | Tao Chen |
| author_facet | Tao Chen |
| author_sort | Tao Chen |
| collection | DOAJ |
| description | Equivalent fracture models are widely used for simulations of groundwater exploitation, geothermal reservoir production, and solute transport in groundwater systems. Equivalent permeability has a great impact on such processes. In this study, equivalent permeability distributions are investigated based on a state-of-the-art numerical upscaling method (i.e., the multiple boundary method) for fractured porous rocks. An ensemble of discrete fracture models is created based on power law length distributions. The equivalent permeability is upscaled from discrete fracture models based on the multiple boundary method. The results show that the statistical distributions of equivalent permeability tensor components are highly related to fracture geometry and differ from each other. For the histograms of the equivalent permeability, the shapes of kxx and kyy change from a power law-like distribution to a lognormal-like distribution when the fracture length and the number of fractures increase. For the off-diagonal component kxy, it is a normal-like distribution and its range expands when the fracture length and the number of fractures increase. The mean of diagonal equivalent permeability tensor components increases linearly with the fracture density. The analysis helps in generating stochastic equivalent permeability models in fractured porous rocks and reduces uncertainties when applying equivalent fracture models. |
| format | Article |
| id | doaj-art-37e2d7fb60694572bab03c820982e79d |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-37e2d7fb60694572bab03c820982e79d2025-08-20T02:08:00ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/67513496751349Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network PropertiesTao Chen0Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, No. 579 Qianwangang Road, Qingdao 266590, ChinaEquivalent fracture models are widely used for simulations of groundwater exploitation, geothermal reservoir production, and solute transport in groundwater systems. Equivalent permeability has a great impact on such processes. In this study, equivalent permeability distributions are investigated based on a state-of-the-art numerical upscaling method (i.e., the multiple boundary method) for fractured porous rocks. An ensemble of discrete fracture models is created based on power law length distributions. The equivalent permeability is upscaled from discrete fracture models based on the multiple boundary method. The results show that the statistical distributions of equivalent permeability tensor components are highly related to fracture geometry and differ from each other. For the histograms of the equivalent permeability, the shapes of kxx and kyy change from a power law-like distribution to a lognormal-like distribution when the fracture length and the number of fractures increase. For the off-diagonal component kxy, it is a normal-like distribution and its range expands when the fracture length and the number of fractures increase. The mean of diagonal equivalent permeability tensor components increases linearly with the fracture density. The analysis helps in generating stochastic equivalent permeability models in fractured porous rocks and reduces uncertainties when applying equivalent fracture models.http://dx.doi.org/10.1155/2020/6751349 |
| spellingShingle | Tao Chen Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties Geofluids |
| title | Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties |
| title_full | Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties |
| title_fullStr | Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties |
| title_full_unstemmed | Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties |
| title_short | Equivalent Permeability Distribution for Fractured Porous Rocks: The Influence of Fracture Network Properties |
| title_sort | equivalent permeability distribution for fractured porous rocks the influence of fracture network properties |
| url | http://dx.doi.org/10.1155/2020/6751349 |
| work_keys_str_mv | AT taochen equivalentpermeabilitydistributionforfracturedporousrockstheinfluenceoffracturenetworkproperties |