TY - JOUR
T1 - Measurement of Electrical Impedance and P-wave Velocity of a Low Permeable Sandstone Core during the Displacement of Saturated Brine by CO2 Injection
AU - Honda, Hiroyuki
AU - Kitamura, Keigo
AU - Takaki, Shinnosuke
AU - Ikemi, Hiro
AU - Mitani, Yasuhiro
N1 - Funding Information:
This work was supported by Grant-in-Aid for JSPS Fellows (No. 16J05780). In addition, a Grant–in-Aid for Scientific Research (B) (No. 25289331) to Y.M. from JSPS supported our work. We also acknowledge the support of WPI-I2CNER, sponsored by the Japanese Ministry of Education, Culture, Sports, Science and Technology.
Publisher Copyright:
© 2017 The Authors.
PY - 2017
Y1 - 2017
N2 - Evaluating and monitoring the CO2 behavior in the reservoir, understanding the mechanism of CO2 flow and distribution in the water-CO2 mixture state is essential. In this study, measurement of the complex electrical impedance (Z) and P-wave velocity (Vp) is conducted during the CO2 injection into the rock core under the reservoir condition. Specimen is low permeable sandstone and injection rate is ultra-low (in the low capillarity number (Cn) area) to high. In addition to measuring Z and Vp, differential pressure on the both sides of the specimen and CO2 saturation (SCO2) of the entire specimen are measured. The change of Z and Vp are observed according to the change of differential pressure and SCO2. After the injection test, SCO2 in cross-section of the specimen is estimated using Archie's law and Gassmann's equation (Patchy saturation model) to the experimental results.
AB - Evaluating and monitoring the CO2 behavior in the reservoir, understanding the mechanism of CO2 flow and distribution in the water-CO2 mixture state is essential. In this study, measurement of the complex electrical impedance (Z) and P-wave velocity (Vp) is conducted during the CO2 injection into the rock core under the reservoir condition. Specimen is low permeable sandstone and injection rate is ultra-low (in the low capillarity number (Cn) area) to high. In addition to measuring Z and Vp, differential pressure on the both sides of the specimen and CO2 saturation (SCO2) of the entire specimen are measured. The change of Z and Vp are observed according to the change of differential pressure and SCO2. After the injection test, SCO2 in cross-section of the specimen is estimated using Archie's law and Gassmann's equation (Patchy saturation model) to the experimental results.
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U2 - 10.1016/j.egypro.2017.03.1629
DO - 10.1016/j.egypro.2017.03.1629
M3 - Article
AN - SCOPUS:85029629732
VL - 114
SP - 4879
EP - 4885
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
T2 - 13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016
Y2 - 14 November 2016 through 18 November 2016
ER -