The quantitative determination of the influence of the critical factors on the adsorption capacity of the shale is important for accurately evaluating its adsorption capacity under the geological conditions. The adsorption experiments are performed on both the dry and the water-saturated shale samples, and the Grand Canonical Monte Carlo (GCMC) simulations are carried out on both the organic and inorganic structures. It is found that the organic matters (OM), with strong intensity and high distribution density of the adsorption sites and large specific surface area, are the most important adsorbent in the shale, accounting for 53%~92% of the adsorption capacity, and the clay minerals take the second place. For most of the adsorption sites on the clay minerals, the adsorption capacity will be impeded by the formation water because of their hydrophilicity, while only the adsorption capacity of the polar group (with hydrophilicity) on the organic surface will be hindered by the formation water. For the shale in the study area, the TOC increases with the depth, causing the increasing of the adsorption amount under the geological conditions, at the same time, the clay mineral content decreases with the depth, causing the descent of the impede effect of the formation water. The quantitative investigation of the influence of the critical factors on the adsorption behaviors of the shale gas is hopeful to provide some helpful insights and references when evaluating the adsorption amount of shale gas under the geological conditions.

定量确定关键因素对页岩吸附能力的影响，对于准确评估地质条件下的页岩吸附能力至关重要。在干燥和水饱和的页岩样品上均进行了吸附实验，对有机和无机结构均进行了大正则蒙特卡罗（GCMC）模拟。研究发现，页岩中最重要的吸附剂是有机质（OM），其吸附点强度高，分布密度高，比表面积大，占吸附量的53％〜92％，且粘土矿物排在第二位。对于黏土矿物上的大多数吸附部位，由于地层水的亲水性，其吸附能力将受到阻碍，而仅极性基团（具有亲水性）在有机表面的吸附能力将受到地层水的阻碍。对于研究区的页岩，TOC随着深度的增加而增加，从而导致地质条件下吸附量的增加，同时，粘土矿物含量随深度的增加而降低，从而阻碍了页岩的阻隔作用。地层水。定量研究关键因素对页岩气吸附行为的影响，为评估地质条件下页岩气的吸附量提供了有益的见识和参考。而只有极性基团（具有亲水性）在有机表面上的吸附能力会受到地层水的阻碍。对于研究区的页岩，TOC随着深度的增加而增加，从而导致地质条件下吸附量的增加，同时，粘土矿物含量随深度的增加而降低，从而阻碍了页岩的阻隔作用。地层水。定量研究关键因素对页岩气吸附行为的影响，为评估地质条件下页岩气的吸附量提供了有益的见识和参考。而只有极性基团（具有亲水性）在有机表面上的吸附能力会受到地层水的阻碍。对于研究区的页岩，TOC随深度增加而增加，导致在地质条件下吸附量增加，同时，粘土矿物含量随深度而减少，导致了页岩的阻碍作用下降。地层水。定量研究关键因素对页岩气吸附行为的影响，为评估地质条件下页岩气的吸附量提供了有益的见识和参考。导致地质条件下吸附量的增加，同时，粘土矿物含量随深度的增加而降低，从而阻碍了地层水的作用。定量研究关键因素对页岩气吸附行为的影响，为评估地质条件下页岩气的吸附量提供了有益的见识和参考。导致地质条件下吸附量的增加，同时，粘土矿物含量随深度的增加而降低，从而阻碍了地层水的作用。定量研究关键因素对页岩气吸附行为的影响，为评估地质条件下页岩气的吸附量提供了有益的见识和参考。