The conclusion is that the stratum pressure would fall when the temperature increased, and the temperature field has a negative influence to coal-bed methane output.
得出了随着温度的升高煤储层的压力在降低，温度的升高对煤层气的产量有着负面的影响这一重要结论。
In order to provide scientific basis for mining coal-bed methane, it is necessary to analyze the pressure on well bottom.
为了给煤层气勘探和开发提供理论依据，必须对煤层气井井底瞬时压力进行分析。
The echometer was used to monitor the change of the annular water level in the coal- bed methane(CBM)wells production, which could decrease pressure stably and continuously.
在煤层气井排采过程中，通常用回声仪来监测环空液面变化，通过控制液面下降速度来实现稳定、连续降压。
With the increase of coal mine methane superficie velocity, pressure loss and outlet temperature of the oxidation bed increase.
随着进入氧化床的乏风气体表观速度的增加，压强损失和出口温度都增加；
With the increase of coal mine methane superficie velocity, pressure loss and outlet temperature of the oxidation bed increase.
随着进入氧化床的乏风气体表观速度的增加，压强损失和出口温度都增加；
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