Exploration and Practice of Volume Fracturing Technology of Shale Oil in Dagang OilfieldYin Shun-li, Zhuang Tian-lin, Yang Li-yong, Jia Yun-peng, Liu Xue-wei, Liu Yu and Yan YuE3S Web Conf., 252 (2021) 03046DOI: https://doi.org/10.1051/e3sconf/202125203046