Pore-Scale Imaging of the Oil Cluster Dynamic during Drainage and Imbibition Using In Situ X-Ray Microtomography

Table 2

Statistical parameters associated with the fluid clusters for the two plugs.

Plug	Experimental process			, water	, oil	, water	, oil
Water-wet	Vacuum saturation (Exp. number 1)	97.3%	-	1.52	-	0.77	-
	First drainage (Exp. number 2)	46.4%	53.6%	1.34	-	0.75	-
	Second drainage (Exp. number 3)	31.4%	68.6%	0.95	0.67	0.72	0.76
	First imbibition (Exp. number 4)	67.3%	32.7%	-	0.98	-	0.76
	Second imbibition (Exp. number 5)	74.8%	25.2%	-	1.06	-	0.75
Oil-wet	Vacuum saturation (Exp. number 6)	95.4%	-	0.74	-	0.74	-
	First imbibition (Exp. number 7)	34.4%	65.6%	0.85	-	0.73	-
	Second imbibition (Exp. number 8)	21.5%	78.5%	0.90	1.54	0.72	0.78
	First drainage (Exp. number 9)	68.3%	31.7%	-	1.39	-	0.77
	Second drainage (Exp. number 10)	80.1%	19.8%	-	1.12	-	0.72