The Tongluo Gorge gas storage is reconstructed from the Tongluo Gorge gas field in the Sichuan Basin. The main producing layer of the Tongluo Gorge gas field in the Sichuan Basin is the Changxing Formation of the Upper Permian, which contains hydrogen sulfide and has developed fractures in the Tongluo layer. After years of development, the pressure coefficient of the reservoir has dropped to 0.14, and the problem of fluid loss in the well killing operation during the oil testing operation is serious. The leakage of killing fluid into the reservoir layer can easily induce solid-phase blockage, fluid sensitivity, liquid trapping and other damages, and lead to well control risks. Compared with the plugging technology during drilling, the temporary plugging technology during oil testing needs to fully consider many factors such as plugging efficiency, reservoir damage, pressure-bearing capacity, and acid solubility. To this end, aiming at the difficulties of fluid loss in the Tongluo Gorge gas Storage with developed fractures and extremely low pressure coefficients, combined with domestic and foreign anti-leakage and plugging technologies, the following technical measures are proposed: adopt acid-soluble gel compound with acid-soluble particle materials to temporarily block reservoir fractures, and remove the plugging layer through acidification after the well killing is completed. Experiments show that the pressure-bearing capacity of the temporary plugging agent compounded with SMG gel and 15% calcium carbonate particles in a 3 mm fracture is 11.0 MPa, which can increase the pressure-bearing capacity of the plugging layer by up to 164% compared with using SMG gel temporary plugging agent alone; both SMG gel plugging agent and SMG gel compounded with calcium carbonate particle temporary plugging agent can be completely degraded in 5% HCl acid solution within 1 h.