Decreasing Coalbed Methane Formation Damage Using Microfoamed Drilling Fluid Stabilized by Silica Nanoparticles

Table 1

Composition of coal samples from 3# coal seam in Jincheng, Shanxi, China.

Amorphous component	Calcite	Dolomite	Kaolinite	Quartz
59%	20%	15%	5%	1%