A New Method of Stress Measurement Based upon Elastic Deformation of Core Sample with Stress Relief by Drilling
Takatoshi Ito, Tohoku University, Institute of Fluid Science, Sendai, Japan, Akio Funato, Fukada Geological Institute, Tokyo, Japan, Tetsuya Tamagawa, Japan Petroleum Exploration, Chiba, Japan, Kazuhiko Tezuka, Japan Petroleum Exploration (JAPEX), Chiba, Japan, Yasuo Yabe, SATREPS, Tokyo, Japan, Shuhei Abe, Tohoku University, Sendai, Japan, Akimasa Ishida, Ritsumeikan University, Kyoto, Japan and Hiroshi Ogasawara, Ritsumeikan Univ, Kusatsu, Japan
