Inorganic scale produced from shale reservoir oxidation during hydraulic fracturing will block pores and fractures, thus hindering the multi-scale transportation of shale gas. The results show that the cations produced after soaking in distilled water mainly consisted of Ca²⁺, Mg²⁺, Na⁺, K⁺ and Fe²⁺. Pyrite and chlorite contain reduced Fe, and the oxidized solution dissolves the reduced iron in shale, further increasing the ion concentration in shale, especially the Fe²⁺. The shale produced precipitation and solid particles after soaking in solutions containing dissolved oxygen and different oxidation solutions. The oxidation solution affects the concentration of ions and the type of solid particles produced in the soaking process.

页岩储层在水力压裂过程中氧化产生的无机垢会堵塞孔隙和裂缝，从而阻碍页岩气的多尺度输送。结果表明，蒸馏水浸泡后产生的阳离子主要有Ca ²⁺、Mg ²⁺、Na ⁺、K ⁺和Fe ²⁺ 。黄铁矿和绿泥石中含有还原铁，氧化溶液溶解了页岩中的还原铁，进一步增加了页岩中的离子浓度，尤其是Fe ²⁺. 页岩在含有溶解氧的溶液和不同的氧化溶液中浸泡后产生沉淀和固体颗粒。氧化溶液影响离子浓度和浸泡过程中产生的固体颗粒类型。