TY - CONF
T1 - Mapping hydraulically created cracks with the mise-à-la-masse method
AU - Sato, Motoyuki
AU - Nakatsuka, Katsuto
AU - Yokoyama, Hidekichi
N1 - Funding Information:
The authors would like to thank Profs. H.Abk, H.Takahashi, H.Sekine, tI.Niitsuma, K. Hayashi and T.Shoji for their valuable suggestions. We are grateful to Messrs. A. Kamashita and Y. Hirayama for numerical Calculations and alSO wish to thanks to the members of GEEE who helped field measurements. This work presented here was supported by Ministry of Education, Science and Culture under Grant-in Aid for Special Distinguished Research No. 58065002.
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PY - 1987
Y1 - 1987
N2 - An example of defining a hydraulically created cracks with a cross-borehole mise-à-la-masse method is presented. Potential anomaly was clearly measured after the hydraulic fracturing at Higashi Hachimantai geothermal field. This anomaly is caused by the created artificial crack filled with the conducting fluid used for the hydraulic fracturing. Two numerical methods, namely, the axially symmetrical 2-D finite element method (FEM) and the 3-D volume integral equation approach were used for an interpretation of the measured data of the excited potential. Effects of the conductivity inhomogeneity of the host rocks was discussed by the numerical results given by the 2-D FEM. The size and the orientation of the created crack was expected by the 3-D volume integral equation approach.
AB - An example of defining a hydraulically created cracks with a cross-borehole mise-à-la-masse method is presented. Potential anomaly was clearly measured after the hydraulic fracturing at Higashi Hachimantai geothermal field. This anomaly is caused by the created artificial crack filled with the conducting fluid used for the hydraulic fracturing. Two numerical methods, namely, the axially symmetrical 2-D finite element method (FEM) and the 3-D volume integral equation approach were used for an interpretation of the measured data of the excited potential. Effects of the conductivity inhomogeneity of the host rocks was discussed by the numerical results given by the 2-D FEM. The size and the orientation of the created crack was expected by the 3-D volume integral equation approach.
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U2 - 10.1190/1.1892028
DO - 10.1190/1.1892028
M3 - Paper
AN - SCOPUS:85057722035
SP - 62
EP - 65
T2 - 1987 Society of Exploration Geophysicists Annual Meeting, SEG 1987
Y2 - 11 October 1987 through 15 October 1987
ER -