Study on the Acoustic Characteristics of Rocks and Fracability in Wunan OilfieldGuo Ziyi, Hu Yongquan, Zhang Yong, Xiong Tingsong, Mao Chun, Lin Hai, Wan Youyu and Liu ShiduoE3S Web Conf., 53 (2018) 03068DOI: https://doi.org/10.1051/e3sconf/20185303068