Method for using deblocking water-swellable packer

The invention relates to a method for using a deblocking water-swellable packer. The technical scheme of the method is that an upper center pipe and a lower center pipe are movably connected through adeblocking liner pipe, the upper center pipe is fixed to the middle of the deblocking liner pipe through an upper deblocking shear pin, the lower center pipe is fixed through a lower deblocking shearpin, an upper blocking ring is fixed to the outer wall of the middle of the upper center pipe, the outer end of the upper center pipe is provided with an upper connector, a lower blocking ring is fixed to the outer wall of the middle of the lower center pipe, and the outer end of the lower center pipe is provided with a lower connector. Water-swellable rubber is processed on the outer wall. The method for using the deblocking water-swellable packer has the advantages that by design of the deblocking structure, contraction of the water-swellable rubber can be achieved, deblocking is achieved,the conditions of failure i