Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China

Table 1

Characteristics of production wells.

CBM wells	Water production date	Main coal seam	Depth (m)	Average daily gas production (m^3)	Cumulative gas production (m^3)	Cumulative water production (m^3)
L-1	Apr. 2018	7+8/13	780.00	171.72	15787.22	258.31
L-2	Apr. 2018	16/18/19	735.60	219.97	21983.67	341.15
L-3	May 2018	13/14/19	832.00	34.54	1067.21	1575.76
L-4	May 2018	13/16/18/19	713.20	324.06	18762.31	404.54
L-5	May 2018	13/19	789.20	56.73	2886.88	254.12
L-6	May 2018	14/16/18	745.80	220.19	11864.53	322.25