Evaluation of Coalbed Methane Content by Using Kernel Extreme Learning Machine and Geophysical Logging Data

Table 1

CBM content results of 12 sets of core coal samples from the 3^# coal seam in well A6.

Sample	Desorption sample mass (g)	Desorption gas content (cm^3)	Lost gas content (cm^3)	Residual sample mass (g)	Measured residual gas content (cm^3)	Vg (cm^3·g^-1)
A6-3-1	1100	12366.44	839.52	400	124.31	12.32
A6-3-2	1100	23380.27	1514.3	400	124.37	22.94
A6-3-3	1250	26864.66	1428.6	400	139.2	22.98
A6-3-4	1500	27967.59	821.99	400	129.26	19.52
A6-3-5	1200	24247.22	526.38	400	134.32	20.98
A6-3-6	1100	20070.15	934.76	400	159.09	19.49
A6-3-7	1000	18825.87	918.46	400	144.2	20.1
A6-3-8	1450	28953.87	1220.8	400	134.25	21.15
A6-3-9	1400	23171.6	858.72	400	159.12	17.56
A6-3-10	1350	20648.98	607.49	400	139.13	16.09
A6-3-11	1100	21552.73	818.82	400	139.28	20.69
A6-3-12	1100	18365.28	754.25	400	149.14	17.75