Patent ID: 6876721

Claim:
A method of depth shifting to correlate information of a core sample taken from a borehole with information derived from an original position of the core sample in the borehole, comprising the steps of: defining a plurality of scan locations at selected intervals along the core; scanning the core at each scan location using computed tomography (CT) to generate a respective core slice for each scan location, each core slice including CT data at the respective scan location and each core slice further having a respective first depth assignable thereto based upon a drilling record taken during drilling of the borehole; generating specified statistics for each core slice, the specified statistics being one of region-of-interest statistics and selective histogram statistics; converting the CT data for each core slice to first bulk density data in accordance with standardized CT number data and the respective specified statistics; comparing the first bulk density data to second bulk density data obtained from logging at respective second depths along the borehole; and determining depth shifting appropriate for obtaining a good match between the first and second depths.