Depending on how you want to plot the images on your logs, there are different options available. This guide explains the different alignments and modes to help you plot the image in the way that you would like.

Please also see this video guide.

And see this article for guidance on working with downhole imagery like televiewer logs or core sketches.

In these examples, the following image will be used.

Point Image

A point image will essentially fill the column with the image, as wide as it can before it runs out of space. It will then scale the image proportionally vertically to match the horizontal space it has used.

Depending on the Vertical Alignment that is selected, the image will appear around the depth selected.

• If the Top Vertical Alignment is selected, the image will use the selected depth as the top of the image and then process the rest of the image down from this point.
• If Centre Vertical Alignment is selected, the image will use the selected depth as the centre of the image and then process half of the image above the depth and half of the image below this point.
• If the Bottom Vertical Alignment is selected, the image will use the selected depth as the base of the image and then process the rest of the image up from this point.

Range Image

Range images will essentially change the scale of the image (although retain its aspect ratio) depending on the space of the column and the size of the image.

Depending on what options are selected, the image can either be ‘chopped off’ at the top and base depth to only show part of the image, or the image can be scaled to ensure that it fits within a column and the depths, or even allow the image to expand past the boundaries of the columns to ensure that no part of the image is lost.

Note that the Allow Column override option will not function unless the Fit to Height option is also selected.

• Range Image, Top Aligned, No Fit To Height – With this selection, the image will be plotted at the top depth, with the image scaled to fit the width of the column, with the image then plotted down to the base depth. Any image that appears past the base depth will then be ‘chopped off’ and not displayed.

• Range Image, Centre Aligned, No Fit To Height – With this selection, the image will be plotted at the middle of the top depth and the base depth, with the image scaled to fit the width of the column, with the image then plotted up to the top depth and down to the base depth. Any image that appears past the top depth or the base depth will then be ‘chopped off’ and not displayed.

• Range Image, Base Aligned, No Fit To Height – With this selection, the image will be plotted at the base depth, with the image scaled to fit the width of the column, with the image then plotted up to the top depth. Any image that appears past the top depth will then be ‘chopped off’ and not displayed.

• Range Image, Fit To Height – With this selection, the image will be plotted between the top and base depths with the image scaled in width to match this aspect ratio. This means that there could be white space within the column around the sides of the image. Any image that appears past the widths of the column will then be ‘chopped off’ and not displayed.

Range Image, Fit To Height and Allow Column Override– With this selection, the image will be plotted between the top and base depths with the image scaled in width to match this aspect ratio. This means that there could be white space within the column around the sides of the image. Any image that appears past the widths of the column will then be shown, past the boundaries of the column, possibly overriding data in those columns.