### Abstract

Estimation of underground fluid state has been paid great attention in subsurface explorations (e.g. oil reservoir development, carbon capture and storage). Permeability is the most important parameter in considering subsurface fluid flow, and seismic-wave velocity is the most popular and trusted parameter derived from geophysical surveys. The objective of this study is estimating permeability from seismic velocity by revealing the relationship between permeability and seismic velocity. Although these two parameters have no direct relationship, the pore geometry of rock can be a bridge of them because it is dominant factor to govern permeability and seismic velocity. Since pore geometry of rock mass is highly complicated, two rock models (cracked rock model and granular model) are adopted for the research. For the calculation of permeability, lattice Boltzmann simulation is conducted in this research. Self-consistent approximation and finite element method are applied to calculate seismic velocity on cracked model and granular model, respectively. As a consequence of the research, permeability can be estimated from seismic velocity using the information of pore geometry: (1) crack aspect ratio and intensity for cracked model and (2) grain-size sorting for granular model.

Original language | English |
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Title of host publication | 46th US Rock Mechanics / Geomechanics Symposium 2012 |

Pages | 921-928 |

Number of pages | 8 |

Volume | 2 |

Publication status | Published - 2012 |

Externally published | Yes |

Event | 46th US Rock Mechanics / Geomechanics Symposium 2012 - Chicago, IL, United States Duration: Jun 24 2012 → Jun 27 2012 |

### Other

Other | 46th US Rock Mechanics / Geomechanics Symposium 2012 |
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Country | United States |

City | Chicago, IL |

Period | 6/24/12 → 6/27/12 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Geotechnical Engineering and Engineering Geology

### Cite this

*46th US Rock Mechanics / Geomechanics Symposium 2012*(Vol. 2, pp. 921-928)

**Permeability estimation from seismic velocity based on crack and grain models.** / Yamabe, H.; Tsuji, Takeshi; Matsuoka, T.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*46th US Rock Mechanics / Geomechanics Symposium 2012.*vol. 2, pp. 921-928, 46th US Rock Mechanics / Geomechanics Symposium 2012, Chicago, IL, United States, 6/24/12.

}

TY - GEN

T1 - Permeability estimation from seismic velocity based on crack and grain models

AU - Yamabe, H.

AU - Tsuji, Takeshi

AU - Matsuoka, T.

PY - 2012

Y1 - 2012

N2 - Estimation of underground fluid state has been paid great attention in subsurface explorations (e.g. oil reservoir development, carbon capture and storage). Permeability is the most important parameter in considering subsurface fluid flow, and seismic-wave velocity is the most popular and trusted parameter derived from geophysical surveys. The objective of this study is estimating permeability from seismic velocity by revealing the relationship between permeability and seismic velocity. Although these two parameters have no direct relationship, the pore geometry of rock can be a bridge of them because it is dominant factor to govern permeability and seismic velocity. Since pore geometry of rock mass is highly complicated, two rock models (cracked rock model and granular model) are adopted for the research. For the calculation of permeability, lattice Boltzmann simulation is conducted in this research. Self-consistent approximation and finite element method are applied to calculate seismic velocity on cracked model and granular model, respectively. As a consequence of the research, permeability can be estimated from seismic velocity using the information of pore geometry: (1) crack aspect ratio and intensity for cracked model and (2) grain-size sorting for granular model.

AB - Estimation of underground fluid state has been paid great attention in subsurface explorations (e.g. oil reservoir development, carbon capture and storage). Permeability is the most important parameter in considering subsurface fluid flow, and seismic-wave velocity is the most popular and trusted parameter derived from geophysical surveys. The objective of this study is estimating permeability from seismic velocity by revealing the relationship between permeability and seismic velocity. Although these two parameters have no direct relationship, the pore geometry of rock can be a bridge of them because it is dominant factor to govern permeability and seismic velocity. Since pore geometry of rock mass is highly complicated, two rock models (cracked rock model and granular model) are adopted for the research. For the calculation of permeability, lattice Boltzmann simulation is conducted in this research. Self-consistent approximation and finite element method are applied to calculate seismic velocity on cracked model and granular model, respectively. As a consequence of the research, permeability can be estimated from seismic velocity using the information of pore geometry: (1) crack aspect ratio and intensity for cracked model and (2) grain-size sorting for granular model.

UR - http://www.scopus.com/inward/record.url?scp=84873135939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873135939&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84873135939

SN - 9781622765140

VL - 2

SP - 921

EP - 928

BT - 46th US Rock Mechanics / Geomechanics Symposium 2012

ER -