Minisize down-hole lateral wall annular recess cutting implement

A mini downhole side wall circular groove cutting tool in the technology field of construction hydraulic engineering, in which the lifting mechanism connects with the top end of the outer cylinder sleeve, the hermetically-sealed cable joint connects with the electronic equipments cabin as output port, the electronic equipments cabin is under the lifting mechanism, the bottom of the electronic equipments cabin has the cooling pump cabin, the bottom of the cooling pump cabin has a upper packer, the upper packer is placed in the outer cylinder sleeve by the upper bracket of packer, the lower packer is connected with the lower part of the outer cylinder sleeve by the lower bracket of packer, the circular groove cutting the main working part is integrated with the inner casing sleeve, push mechanism and placed between the upper packer and the lower packer, the corresponding place of the outer cylinder sleeve has a front work window and a back work window between the upper packer and the lower packer, the lower equ