Table 2. Correlation Matrix of Influence Factor Statistics of Gas and Water Production.

influence factor	burial depth	gas content	porosity	permeability	static fluid level	water head height	gas production pressure	pressure drop at gas breakthrough point	pressure drop rate
burial depth	1.000	0.163	0.156	–0.082	0.282	0.244	0.282	0.176	0.177
gas content		1.000	0.187	0.141	0.298	0.262	0.762	–0.582	–0.256
porosity			1.000	0.879	–0.101	0.236	0.155	0.012	0.038
permeability				1.000	–0.184	0.203	0.104	–0.022	0.038
static fluid level					1.000	–0.283	0.209	–0.601	–0.275
height of water head						1.000	0.331	0.075	0.073
gas production pressure							1.000	–0.616	–0.232
pressure drop at gas breakthrough point								1.000	0.570
pressure drop rate									1.000