TY - CHAP
T1 - Simple estimation methodology of leakage from geologic storage of CO2
AU - Yamamoto, Koji
AU - Itaoka, Kenshi
AU - Yoshigahara, Chisato
AU - Akai, Makoto
PY - 2005
Y1 - 2005
N2 - This chapter develops a simple methodology based on quality of cap rocks to estimate amount of CO2 leakages. To quantify quality of cap rocks, Cap-rock Quality Factors (CQF) is developed. CQF is calculated reflecting features of site, height of cap rock, depth of the site and possibility of three types of leakage, leakage via matrix of cap-rock, leakage via fracture of cap-rock, and leakage via wells. Two different interpretations of CQF, Conduit Model and Membrane Model are used to estimate amount of leakage by each categories. Conduit Model can be generally applicable to certain structural seal category and Membrane Model applicable to uncertain seal category. The methodology can be utilized by those who do not have sufficient simulation resources and provide the first order estimate of leakage of classified geologic storage of CO2 that would be a basis for developing accounting methodology. In particular, this is intended to contribute to accounting rules for CO2 capture and storage (CCS) proposed by research project. Moreover, project planners and policy makers would utilize the methodology to examine the feasibility of some CO2 geologic storage projects.
AB - This chapter develops a simple methodology based on quality of cap rocks to estimate amount of CO2 leakages. To quantify quality of cap rocks, Cap-rock Quality Factors (CQF) is developed. CQF is calculated reflecting features of site, height of cap rock, depth of the site and possibility of three types of leakage, leakage via matrix of cap-rock, leakage via fracture of cap-rock, and leakage via wells. Two different interpretations of CQF, Conduit Model and Membrane Model are used to estimate amount of leakage by each categories. Conduit Model can be generally applicable to certain structural seal category and Membrane Model applicable to uncertain seal category. The methodology can be utilized by those who do not have sufficient simulation resources and provide the first order estimate of leakage of classified geologic storage of CO2 that would be a basis for developing accounting methodology. In particular, this is intended to contribute to accounting rules for CO2 capture and storage (CCS) proposed by research project. Moreover, project planners and policy makers would utilize the methodology to examine the feasibility of some CO2 geologic storage projects.
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U2 - 10.1016/B978-008044704-9/50323-2
DO - 10.1016/B978-008044704-9/50323-2
M3 - Chapter
AN - SCOPUS:84882857008
SN - 9780080447049
SP - 2309
EP - 2312
BT - Greenhouse Gas Control Technologies
PB - Elsevier Ltd
ER -