Microscopic Flow Characteristics of Fluids in Porous Medium and Its Relationship with Remaining Oil Distribution: A Case Study in Saertu Oilfield of Daqing in China

Figure 7

Types of microscopic remaining oil: the red line represented the high flow velocities and the blue line represented the low flow velocities. (a) Remaining Oil I: remaining oil of cluster state, (b) Remaining Oil II: remaining oil of cant state, (c) Remaining Oil III: remaining oil of intergranular adsorbing state, (d) Remaining Oil IV: remaining oil of state of thin film on pore surface, (e) Remaining Oil V: remaining oil of slit state, (f) Remaining Oil VI: remaining oil of particle adsorbing state.

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