In the drilling operations over past years， conventional washover milling has been used to deal with bit burial due to the formation or a long time treatment of bit burning or sticking. This method is labor-intensive and consumes materials such as male cones with low success rate， even scrapping of the borehole. This paper introduces use of the extra-long washover mill to deal with down-shole accidents such as bit burial in uranium drilling in Ordes Basin. It can greatly shorten the treatment time of the accident， reduce the labor intensity， improve the intrinsic safety of the drill， and reduce the abandonment rate of holes. It provides a fast and safe method for dealing with down hole accidents in future drilling operations.