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|Title:||Pseudo-outcrop Visualization of Borehole Images and Core Scans|
|Authors:||Mirkes, Evgeny M.|
Gorban, Alexander N.
Elkington, Peter A. S.
Whetton, James A.
|Publisher:||Springer Verlag (Germany) for International Association of Mathematical Geosciences (IAMG)|
|Citation:||Mathematical Geosciences, 2017, 49 (8), pp. 947-964 (18)|
|Abstract:||A pseudo-outcrop visualization is demonstrated for borehole and full-diameter rock core images to augment the ubiquitous unwrapped cylinder view and thereby assist nonspecialist interpreters. The pseudo-outcrop visualization is equivalent to a nonlinear projection of the image from borehole to earth frame of reference that creates a solid volume sliced longitudinally to reveal two or more faces in which the orientations of geological features indicate what is observed in the subsurface. A proxy for grain size is used to modulate the external dimensions of the plot to mimic profiles seen in real outcrops. The volume is created from a mixture of geological boundary elements and texture, the latter being the residue after the sum of boundary elements is subtracted from the original data. In the case of measurements from wireline microresistivity tools, whose circumferential coverage is substantially <100 %, the missing circumferential data are first inpainted using multiscale directional transforms, which decompose the image into its elemental building structures, before reconstructing the full image. The pseudo-outcrop view enables direct observation of the angular relationships between features and aids visual comparison between borehole and core images, especially for the interested nonspecialist.|
|Rights:||Copyright © 2017, Springer Verlag (Germany) for International Association of Mathematical Geosciences (IAMG). Deposited with reference to the publisher’s open access archiving policy.|
|Description:||The file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.|
|Appears in Collections:||Published Articles, Dept. of Mathematics|
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|1702.02633v2.pdf||Post-review (final submitted author manuscript)||3.87 MB||Adobe PDF||View/Open|
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