One embodiment of the present invention is to provide a non-shrinkable packer device that can be reused by easily recovering an inflated packer to the ground. The non-shrinkable packer device according to an embodiment of the present invention is provided in the packer area of the exploration pipe and the exploration pipe that is formed long along the borehole inside the ground and is moved in the longitudinal direction of the borehole according to an external force, It expands between the outer circumferential surface and the inner wall surface of the borehole to include a packer part for supporting the pipe for exploration in the borehole, and the packer part includes a water-swellable material formed by mixing a water-swellable resin and bentonite.
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