为明确不同酸液体系的储层适用性，了解储层酸岩刻蚀形态对裂缝导流能力的影响，给出不同层位的最佳段塞组合方式。通过在川渝碳酸盐岩储层开展酸蚀裂缝导流能力实验，结果显示，不同酸液体系之间段塞组合对茅口组白云岩酸蚀后的导流能力比灰岩高；不同单一酸液体系酸蚀裂缝后形态不同，其中转向酸刻蚀后有极深的沟槽，自生酸沟槽最浅；对于茅口组，胶凝酸与压裂液和胶凝酸与自生酸的交替级数为三级交替时，其导流能力最高，且胶凝酸与自生酸三级交替后60 MPa下导流能力可达4.53 μm²·cm；栖霞组和灯影组选择压裂液与胶凝酸的二级交替时其导流能力最高，60 MPa下导流能力分别为6.72 μm²·cm和7.47 μm²·cm。在川渝探区，通过对酸液的酸蚀裂缝导流能力进行了现场应用和深入的考察验证，结果表明酸液入井后酸蚀效果良好，改造后现场产气量可达208 × 10⁴m³/d，增产效果达到预期，为川渝碳酸盐岩储层的酸压工艺提供了理论和试验指导。

In order to clarify the reservoir applicability of different acid systems, understand the influence of reservoir acid rock etching morphology on fracture conductivity, and give the optimal slug combination method for different horizons, acid erosion fracture conductivity experiments were carried out in the carbonate reservoirs of Sichuan and Chongqing, the results show that the conductivity of slug combinations between different acid systems to the dolomite of the Maokou Formation after acid etching is higher than that of the limestone. The morphology of acid-etched fractures after acid-etching is different between different single-acid systems, in which steering acid has extremely deep grooves after etching, and the grooves of authigenic acid are the shallowest. For Maokou Formation, when the alternation between gelling acid and fracturing fluid and the alternation between gelling acid and authigenic acid is tertiary, the conductivity is the highest, and the conductivity reaches 4.53 μm²·cm at 60 MPa after tertiary alternation between gelling acid and authigenic acid. The conductivity of Qixia Formation and Dengying Formation is the highest when secondary alternation of fracturing fluid and gelling acid was selected, and the conductivity of Qixia Formation and Dengying formation are 6.72 μm²·cm and 7.47 μm²·cm at 60 MPa, respectively. In the Sichuan Chongqing exploration area, on-site application and in-depth investigation were conducted to verify the acid corrosion fracture conductivity of the acid solution. The results show that the acid corrosion effect is good after the acid solution entered the well, and the gas testing effect after the transformation is 208 × 10⁴ m³/d, achieving the expected increase in production. It provides theoretical and experimental guidance for acid fracturing technology of carbonate reservoirs in Sichuan and Chongqing.