Well washing auxiliary device for petroleum downhole operation

The utility model discloses a petroleum downhole operation well washing auxiliary device which comprises an auxiliary device body and a hydraulic rod, the hydraulic rod is arranged at the bottom of the inner side of the auxiliary device body, the bottom of the hydraulic rod is fixedly connected with a fixed disc, the bottom of the fixed disc is movably connected with a movable disc, and the left side of the top of the fixed disc is fixedly connected with a fixed frame. The fixing frame is concave, a friction wheel is movably connected to the inner side of the fixing frame, conversion helical teeth located on the outer side of the fixing frame are fixedly connected to the front face of the friction wheel, and connecting helical teeth meshed with the conversion helical teeth are movably connected to the left side of the top of the fixing disc. The friction wheel and the movable disc are arranged to be matched with the cleaning piece to conduct scraping cleaning work on the inner wall of the well casing, and the