Protective device for carbon dioxide geological storage tube well

The utility model discloses a carbon dioxide geological storage tube well protection device, and particularly relates to the technical field of carbon dioxide geological storage, the carbon dioxide geological storage tube well protection device comprises a pipeline well, a fixing assembly and a protection assembly detachably installed on the fixing assembly are installed in the pipeline well, and the protection assembly comprises a plurality of sections of protection covers. The protective cover comprises a plurality of arc-shaped net plates, the fixing assembly comprises a plurality of annularly-distributed I-shaped steel, a plurality of clamps are fixedly installed on the protective cover in the laying direction of the I-shaped steel, and the sides, away from the arc-shaped net plates, of the clamps are of opening structures and matched with the I-shaped steel. The arc-shaped screen plates are spliced one by one from bottom to top, nailing or welding is not needed between the arc-shaped screen plates and th