Abstract: Thin bed resistivity logging (abbreviation TBRT) is a new kind of high resolution deep investigation resistivity logging and characterized by high vertical resolution and deep investigation depth.Through application comparison between conventional logging and TBRT in 8K313 well, TBRT is better in appraising thin interbedded layers be- tween sand and shale,refining and explaining internal wa- ter flooded layers and grades,indicating movable hydro- carbon saturation and calculating the thickness of pure sand layers.Therefore,TBRT is proved to have good ap- plication value and potential popularity.