Mechanisms of water block removal by surfactant micellar solutions in low permeability reservoirs

LI Junjian,LIU Ben,GUO Cheng,SU Hang,YU Fuwei,MA Mengqi,WANG Lida,JIANG Hanqiao

Fig. 20. Microscopic image of remaining oil occurrence state at the end of crude oil flowback in Scheme FA-1.