## 抄録

To make sure that CO_{2} is safely and securely stored in the reservoir, only way for us to know is to monitor the injected CO_{2}. In most of the injection sites, monitoring is conducted to understand the behavior and distribution of CO_{2}. Also we need to estimate the volume of CO_{2} quantitatively. In order to estimate the quantitative volume, we need to compute the volume from physical parameter like P-wave velocity or resistivity. For the P-wave velocity, recent studies show the way of computing saturation using Gassmann's theory. But due to the study of Nagaoka, response of P-wave velocity becomes weak in high saturation. Because of the CO_{2} saturation more than 40% happening in the reservoir, seismic survey needs to be supplied by another theories. In this study we selected resistivity monitoring to overtake the weakness of seismic monitoring. By conducting series of resistivity measuring experiment of laboratory scale, we considered the saturation computing equation which can be thought as a formula to calculate CO_{2} saturation in the field. By using these equations computation of CO_{2} saturation in Nagaoka was conducted. By comparing several equations which can be thought to estimate the CO_{2} saturation in field data, we suggested a simple equation formed by resistivity and shale volume. By using this suggested equation, computational result showed good match to the estimated saturation computed from neutron porosity.

本文言語 | 英語 |
---|---|

ページ（範囲） | 2211-2218 |

ページ数 | 8 |

ジャーナル | Energy Procedia |

巻 | 1 |

号 | 1 |

DOI | |

出版ステータス | 出版済み - 2月 2009 |

外部発表 | はい |

イベント | 9th International Conference on Greenhouse Gas Control Technologies, GHGT-9 - Washington DC, 米国 継続期間: 11月 16 2008 → 11月 20 2008 |

## !!!All Science Journal Classification (ASJC) codes

- エネルギー（全般）

## フィンガープリント

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