Study and Application of Chemical Production Stimulation Process in Heavy Oil Reservoir Production WellsYu Yan, Shu-zhao Guo, Qing-qin Cai, Fu-chun Tian, Yang Yan and Hao-ran XuE3S Web Conf., 185 (2020) 04032DOI: https://doi.org/10.1051/e3sconf/202018504032