中文摘要：

为了研究鄂尔多斯盆地延长组陆相页岩的吸附能力，选取粒度为0．28-0．18ram（60-80目）的页岩样品，运用吸附等温测试实验研究了温度、压力、有机碳含量、含水饱和度对页岩吸附规律的影响，对比研究了不同气体在页岩上的吸附能力；运用Langmuir吸附模型拟合实验结果，探索了不同影响因素与拟合参数之间的相互关系。研究表明：吸附量随压力、有机碳含量的增加逐渐升高；随温度的升高而降低；在含水的。情况下，气体的吸附量减小；不同气体的吸附能力大小依次为：CO2〉CH4〉N2。Langmuir吸附模型可以很好地描述测试压力范围内气体的吸附规律，根据拟合参数与温度、有机碳含量之间的线性关系，对Langmuir吸附模型进行了修正，预测出了不同深度、不同有机碳含量下的页岩气吸附量，验证了页岩气在高压下的“负吸附”现象。

英文摘要：

In order to study the adsorption capacity of continental shale in Ordos Basin, this paper selected the 0.28-0.18 ram（60-80 mesh） of shale sample, and conducted the adsorption isotherm experiment to research the effect of temperature, pressure, organic carbon content and water saturation on shale adsorption. Then the paper further studied the adsorption capacity of different gases. The Langmuir adsorption model was used to fit the experiment data and explore the relationship between different factors and fitting parameters. The results show that the adsorption capacity increased with the pressure and the organic carbon content, and decreased with the increase of temperature and that the adsorption capacity of methane decreased with the water content. The adsorption capacity of different gas is as follows： carbon dioxide〉methane〉nitrogen. The adsorption law of shale gas can be described better by using Langmuir adsorption model. On the basis of the linear relationship between the fitting parameters and temperature, organic car bon content, the traditional Langmuir adsorption model was modified to predict the adsorption capacity of shale gas under different depth and different organic carbon content, and the ＂negative adsorption＂ phenomenon of shale gas under high pressure was verified.