Study on the Wettability and Spontaneous Imbibition Characteristics of Lacustrine Shale

Table 1

Basic geochemical parameters and mineral composition information of samples.

Lithofacies type	Sample number	Formation	TOC (%)	Siliceous mineral (%)	Calcareous minerals (%)	Calcareous minerals (%)
Sandy interlayer	YY-72-2	K2qn1	0.64	76.9	3.0	20.1
Low organic matter laminated siliceous shale	YG-616-3	K2qn1	0.70	62.2	12.1	25.6
Low organic matter laminated siliceous shale	YJ-62-3	K2qn1	0.99	58.6	16.4	25
High organic matter laminated siliceous shale	YA-151-1	K2qn1	2.88	51.6	11.6	36.8
High organic matter massive siliceous shale	YD-22-1	K2qn1	3.95	58.2	7.9	33.9
High organic matter massive clay shale	YJ-27-1	K2qn1	4.33	18.1	1.9	80