Time Characteristics of the Influence Radius by Injecting N₂ to Displace Coalbed Methane: A Case Study

Table 5

The fitting formula and fitting coefficient.

Gas injection pressure (MPa)
0.5		0.7495	0.446	0.99803
0.8		0.9947	0.4491	0.99641
1.2		1.2072	0.4544	0.99729
1.6		1.3294	0.4605	0.99522
2.0		1.4878	0.4704	0.98169