To verify the feasibility of applying ultrasonics to enhancing gas production from shale gas reservoirs, experimental study on the effects of ultrasonics on adsorption, desorption and seepage characteristics of shale gas using four samples from Sichuan Basin has been carried out. Adsorption and desorption of methane, were tested by volume method under different conditions, while the permeabilities of shale samples were tested by steady state method under different conditions. Results show that ultrasonics has a negative effect on the adsorption of shale gas, while a positive effect on desorption, resulting from the fact that ultrasonics treatment can enhance the vibration of gas molecules to break down the adsorption equilibrium. Further, the permeability dropped significantly with the effective confining pressure and pore pressure increasing, resulting from that high confining pressure decreases the area of seepage channels. The results also illustrate that permeability increases with the ultrasonics power increasing, presumbly by forming microfractures in shale which results in significant increase in the area of seepage channels.

为了验证应用超声波提高页岩气储层产气量的可行性，利用四川盆地的四个样品进行了超声波对页岩气吸附，解吸和渗流特性影响的实验研究。在不同条件下用体积法测试甲烷的吸附和解吸，而在不同条件下用稳态法测试页岩样品的渗透率。结果表明，超声波对页岩气的吸附有负面影响，而对页岩气的吸附则有正面影响，这是因为超声波处理可以增强气体分子的振动，破坏吸附平衡。此外，随着有效围压和孔隙压力的增加，渗透率显着下降，高围压导致的结果是减小了渗流通道的面积。结果还表明，渗透率随超声波功率的增加而增加，大概是由于在页岩中形成了微裂缝，导致渗漏通道面积显着增加。