This paper carries out the expansion applicable research on the basis of the principles, the procedures of implementation and applied conditions of Righting and Taking off Technology in the Overhaul Set of the Staggered Oil Wells of the oilfield, sets forth prospects of the application for Righting and Taking off technology in the oilfield development, points out the technical direction of Righting and overhaul and removal casing technology for oil wells of old oilfield.