地勘时期煤层瓦斯与煤层气测试标准对比研究

Contrastive Study of Coal Seam Gas and CBM Testing Standards during Exploration

基于现行的煤层瓦斯与煤层气测试标准,从适用范围、采样要求、仪器设备、解吸过程、残留气获取、损失气计算6个方面对比了煤层气、煤层瓦斯测试标准存在的差异,并从损失气、解吸气、残余气等三个方面分析了煤层气(煤层瓦斯)测试标准差异对测试结果的影响。分析结果表明损失气量是影响煤层气(煤层瓦斯)结果准确性的关键因素,但其受采样工艺影响较大,建议通过统一选择绳索取心工艺增加煤层瓦斯测试精度。

Based on the current testing standards of coal seam gas and CBM,from six aspects of application scope,sampling requirement,instrument and equipment,desorption process,residual gas acquisition and lost gas estimation,have contrasted existing differences between coal seam gas and CBM testing standards,then from three aspects of lost gas,desorption gas and residual gas analyzed impact from differences between CBM (coal seam gas) testing standards on test results.The analyzed results have shown that the lost gas volume is the key factor impacting CBM (coal seam gas) tested result accuracy.However the impact form sampling technology is rather large;it is suggested that through unified wire line coring technology to improve coal seam gas test precision.