TY - JOUR PY - 2020 J2 - Pet. Chem. SN - 0965-5441 T2 - Petroleum Chemistry VL - 60 IS - 1 DO - 10.1134/S0965544120010156 TI - Performance and Mechanism of Span Surfactants as Clean Flow Improvers for Crude Oil UR - https://www.cheric.org/research/tech/periodicals/view.php?seq=1808067 KW - Span surfactant KW - crude oil KW - flow improver KW - viscosity KW - pour point AU - Gu XF AU - Gao L AU - Li YF AU - Chen SJ AU - Zhang J AU - Du WC AU - Qu CT AU - Chen G SP - 140 EP - 145 LA - English ER -