Abstract: A method includes imaging, at an imaging resolution, a core of a subsurface formation to create a core image and iteratively performing the following operations until a defined feature of a rock of the subsurface formation exceeds a viewable image feature threshold: extracting a number of subsamples from the core for a first iteration and from each of the number of subsamples previously extracted for a subsequent iteration; increasing the imaging resolution; and imaging each subsample. The method includes performing the following operations for the subsamples last extracted: determining at least one formation property characteristic; determining a guiding rock property for each voxel of the core image and the number of subsample images; and determining a subsample that is a shortest distance to the voxel based on the number of guiding rock properties; and mapping, for each voxel, the at least one formation property characteristic that is the shortest distance.

Abstract: A core scan alignment service processes core scans to automatically perform, longitudinal and rotational alignment of core sample images. The alignment service fits ellipses to a core sample represented in an image and fits a line through the center of the ellipses to determine a center axis of the image. The alignment service aligns the determined center axis of the image with center axes of other processed images. The alignment service also rotates the image around the central axis while comparing sub-volumes or portions of the image with an adjacent previously aligned image. The alignment service determines a similarity metric between the neighboring images at several rotational positions. The alignment service then rotates the image to a degree of rotation which yielded the highest similarity metric value. The alignment service can output a three-dimensional model or image of an aligned set of core sample images.