| 摘要 |
An innovative process whereby two images comprising orthogonal 2D CT scans of core are used to derive a goniometry dataset of dips for geological features. To generate the goniometer dataset, an interpreter "picks" the relevant points of bedding features within the 2D CT scan images, referencing them with respect to depth within an orthogonal "pseudo-reference" system. The goniometry data for the geological features can then be re oriented into their true orientations by using a borehole image log to identify a "calibration dip" i.e. a feature of known orientation evident in both the orthogonal CT scans and an independent oriented borehole image log. The goniometry dip of the calibration feature is simply rotated using stereographic projection within computer software to match the known orientation of the borehole image calibration feature. During rotation of the calibration goniometry dip, exactly the same rotation is applied to all the other goniometry dips within the CT scan core section which is identified as being continuous, thus also correctly orienting them. CY,, Gb) Cl0) -r_ g j K |
