随着非常规油气藏的开发需求不断增加，压裂液的改进显著提升了储层改造效果和资源采收率。针对压裂液对页岩甲烷吸附特性的影响进行了实验研究，采用自行研制的高压吸附实验装置测量甲烷在页岩中的吸附量和扩散系数。研究结果表明，压裂液的作用不仅减少了页岩对甲烷的吸附容量，还在低压阶段促进了甲烷的扩散能力。页岩的甲烷吸附量明显降低，最大吸附量仅为2 mL/g左右。同时，压裂液在高压条件下对甲烷的扩散具有抑制作用，扩散系数随压力增加呈现下降趋势。压裂液处理后页岩的矿物组成和孔隙结构发生显著变化，斜长石和白云石等矿物含量显著减少，孔隙度下降。研究结果为进一步优化压裂液配方和提高页岩气采收率提供了理论依据和实验数据支持。

With the growing demand for the exploitation of unconventional oil and gas reservoirs, substantial advancements in fracturing fluid formulations are being achieved, significantly enhancing reservoir stimulation and resource recovery efficiency. The influence of fracturing fluids on the methane adsorption behavior of shale was examined through experimental investigations employing a custom-designed high-pressure adsorption apparatus. It was observed that the introduction of fracturing fluid reduces the methane adsorption capacity of shale while facilitating methane diffusion at low pressures. A pronounced decline in methane adsorption capacity was identified, with the maximum value reaching approximately 2 mL/g. Furthermore, under high-pressure conditions, fracturing fluids were found to inhibit methane diffusion, as indicated by a decrease in the diffusion coefficient with increasing pressure. Post-treatment analysis revealed significant alterations in the mineral composition and pore structure of the shale, including a reduction in the content of minerals such as plagioclase and dolomite, accompanied by a decrease in porosity. These findings offer valuable theoretical insights and empirical evidence to inform the optimization of fracturing fluid design and the improvement of shale gas recovery efficiency.