【摘要】 煤的吸附性能与能力是煤层气资源可采性评价和指导煤层气井排采生产的关键技术参数 ,等温吸附数据测定的准确性直接关系到煤层气开发项目的成败和煤层气产业的发展。通过对 4种不同变质程度的煤 ,在不同压力下进行的等温吸附实验结果分析 ,认为在 8MPa压力下 ,各煤级煤吸附基本达到饱和。还分析了压力对测定结果影响的原因 ,确定了实验的最佳条件 ,为预测深层煤层气吸附特性提供了实验基础数据。更多还原

【Abstract】 The coal isothermal adsorption experiment with high pressure volume method is to obtain the key technical parameters for the recoverability evaluation of coal bed gas resource and to guide the production of coal bed gas wells The accuracy to measure the data of the isothermal adsorption directly influences the success of coal bed gas exploitation projects and the development of coal bed gas industry According to the result analysis of the isothermal adsorption experiments for 4 coals with different deterioration levels under different pressure,it is found that the adsorption of different level coals all almost reaches the saturation at 8 Mpa of pressure Also,the reasons why the pressure influences the measuring results are analyzed The optimal conditions for the experiments are determined It provides the experimental ground to predict the adsorption characteristics of deep coal bed gas更多还原