Microemulsion Oil Displacement Effect of Fracture Reservoirs Jiangfen Jia, Zhengdong Xu, Bin Zhang, Peng Wang, Weizhong Kong, Zhiyuan Xu, Wei Xiong, Yuanzhao Jia and Jiefeng Cao E3S Web Conf., 145 (2020) 02059 Published online: 06 February 2020 DOI: 10.1051/e3sconf/202014502059