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

Table 6

Comparison of the calculation results and the test results.

Gas injection time (h)	Radius of field test (m)	Radius of numerical simulation (m)	Error	Formula (11) radius (m)	Relative error
1	0.8	0.75	6.25%	0.76	4.80%
2	1.0	1.0	0	1.04	3.65%
4	1.5	1.4	6.67%	1.41	5.96%
7	2.0	1.8	10%	1.81	9.54%