Characteristics of dissolved inorganic carbon in produced water from coalbed methane wells and its geological significance

YANG Zhaobiao,QIN Yong,QIN Zonghao,YI Tongsheng,LI Cunlei,ZHANG Zhengguang

Table 2 δ13CDIC variation trend from Mann-Kendall test.

Well name Z Significance/% Well name Z Significance/% GP-1 -1.355 90 GP-5 2.815 99 GP-2 1.146 GP-6 2.190 95 GP-3 2.398 99 GP-7 -0.104 GP-4 0.730 GP-8 1.564 90