Study on the Wettability and Spontaneous Imbibition Characteristics of Lacustrine Shale

Table 2

Spontaneous imbibition sample information.

Experimental group	Lithofacies type	Sample number	Bedding surface and bottom surface direction	Column length (mm)	Column diameter (mm)	Porosity (%)
N-dodecane imbibition experiment	High organic matter laminated siliceous shale	YA-151-1	Parallel	10.67	25.23	9.00
	Sandy interlayer	YY-72-2	Parallel	13.98	25.19	11.89
		YY-72-2	Vertical	10.41	25.28	9.10
	Low organic matter laminated siliceous shale	YG-616-3	Parallel	13.08	24.33	9.71
	High organic matter massive siliceous shale	YD-22-1	Parallel	7.78	25.47	3.00
	High organic matter massive clay shale	YJ-27-1	Parallel	11.01	25	7.01
		YJ-27-1	Vertical	12.13	25.12	8.00
	Low organic matter laminated siliceous shale	YJ-62-3	Parallel	12.17	25	3.82
		YJ-62-3	Vertical	10.51	25.32	5.4
Deionized water imbibition experiment	High organic matter laminated siliceous shale	YA-151-1	Parallel	10.55	25.03	9.00
		YA-151-1	Vertical	11.72	26.56	8.32
	Sandy interlayer	YY-72-2	Parallel	11.77	25.51	11.89
		YY-72-2	Vertical	10.53	25.82	9.10
	Low organic matter laminated siliceous shale	YG-616-3	Parallel	9.1	24.43	9.71
	High organic matter massive siliceous shale	YD-22-1	Parallel	19.88	25.52	3.00
	High organic matter massive clay shale	YJ-27-1	Parallel	11.23	25.22	7.01
		YJ-27-1	Vertical	10.93	25.19	8.00
	Low organic matter laminated siliceous shale	YJ-62-3	Parallel	11.63	25.39	3.82
		YJ-62-3	Vertical	11.08	25.48	5.40