Study on Water-Driving Law and Remaining Oil Distribution Pattern in Ultra-low Permeability ReservoirPing Liu, Jiaosheng Zhang, Jing Wang, Huayu Zhong, Ruiheng Wang and Wenfang LiE3S Web of Conf., 406 (2023) 02036DOI: https://doi.org/10.1051/e3sconf/202340602036