Abstract: Difficulties are encountered in cementing the Longgang gas field in Sichuan Basin, primarily due to the lost circulation, long cementing section, super retarder induced by large temperature difference, high temperature and high pressure, and high content of acidic gases such as H₂S and CO₂. Then response strategies were proposed in accord with the cementing requirements of different casing programs. Through mechanism analysis and experimental comparison, three cement slurry systems were developed, i.e., the leak-proof toughening system, the salt-resistant system featuring large temperature difference, and the anti-corrosion system. Laboratory experiments showed that the fiber groups of different scales and elastic modulus prevented the propagation of micro-cracks and played a role in bridging the cracks in a network, thus effectively solving the lost circulation problem. The optimized organic acid and starchy composite retarder SD210 and the copolymeric salt-proof fluid loss agent SD130 were resistant to a high temperature of 160℃ and showed good anti-gas-channeling performance, thus helping to solve the “super retarder” problem in the 177.8mm liner cementing. Comparative analysis of the compressive strength and permeability of set cement before and after corrosion combined with X-Ray diffraction and scanning electron microscopy verified that it was feasible to enhance the anticorrosion effect of set cement by improving the density. Field application in the Longgang gas field showed that the prepared slurry systems were significantly improved in cementing quality, and were applicable for cementing carbonate acidic gas fields as well as prolonging the lifetime of gas wells.