Research on CO2 Quality Pipeline Transportation Based on Yanchang Oilfield CCUS Yongchao Yang, Hongsheng Tao, Jinghua Yang, Qinghua Shang and Shuangge Cao MATEC Web Conf., 100 (2017) 02004 Published online: 08 March 2017 DOI: 10.1051/matecconf/201710002004