论文部分内容阅读
利用煤岩的吸附特征可以评价煤储层物性及可采资源量,对比分析煤岩和泥页岩的吸附特征对泥页岩的开发具有十分重要的指导意义。通过比较不同实验温度下煤岩和泥页岩的吸附特征,发现随着温度升高,煤岩和页岩的V_L逐渐降低的,页岩的V_L变化更加明显,说明温度对泥页岩吸附量的影响更加大;对比煤岩和泥页岩的吸附时间发现泥页岩的吸附时间较短,很快能达到吸附平衡,煤岩的吸附时间相对较长;研究还得出随着有机质含量的增加,煤岩的p_L值逐渐增加,页岩的V_L、p_L逐渐增大;随着Ro的增大,煤岩的V_L值逐渐增大,但是p_L值是逐渐降低的,泥页岩的V_L值、p_L值随Ro的增大均呈降低趋势。
The characteristics of coal reservoir physical property and recoverable resources can be evaluated by using the adsorption characteristics of coal and rock, and comparative analysis of the adsorption characteristics of coal and shale plays an important guiding role in the development of shale. By comparing the adsorption characteristics of coal and shale at different experimental temperatures, it is found that the V_L of shale is more obvious as the temperature rises, and the V_L of shale is gradually decreased. Compared with the adsorption time of coal and shale, it is found that the adsorption time of shale is short, adsorption equilibrium can be reached quickly, and the adsorption time of coal and rock is relatively longer. The study also shows that with the increase of organic matter content With the increase of Ro, the value of V_L of coal and rock gradually increases, but the value of p_L decreases gradually, and the value of V_L of shale , P_L value decreases with increasing Ro.