Apparatus for measuring the weight of the drill string

摘要

The device is an apparatus for measuring the downhole weight of a drill string. The measuring device comprises an annular expandable hydraulic cylinder having a central bore through which the tubular string can pass. A removable slip means is placed between the tubular string and the hydraulic cylinder. A gauge indicates the weight of the tubular string. The gage is responsive to a transfer of the tubular string weight to the annular hydraulic cylinder by the insertion of slips between the tubular string and the cylinder.