Experimental Study and Stabilization Mechanisms of Silica Nanoparticles Based Brine Mud with High Temperature Resistance for Horizontal Shale Gas Wells

Table 1

Composition of shale samples from the first shale gas well of Jiangxi, China.

X-ray diffraction	wt/%
Chlorite	25
Illite	20
Calcite	15
Feldspar	10
Gypsum	3
Pyrite	5
Quartz	22