Experimental Investigation into the Effects of Fracturing Fluid-Shale Interaction on Pore Structure and Wettability

Table 1

Change of composition after slick water soaking.

Sample	Quartz	Potash feldspar	Plagioclase	Calcite	Dolomite	Pyrite	Clay mineral
J-0	22.1%	0.9%	4.5%	2.7%	60.2%	2.7%	6.9%
J-8	22.1%	0.9%	4.5%	2.5%	58.4%	2.7%	7.3%