1. n. [Formation Evaluation]
A vertical section of a log presentation over which one particular set of data is displayed. The track divides the presentation into different sections, each with a certain set of log curves or other data, such as depth numbers. The section is vertical in the sense that it is along the depth or time axis of the log. The curves are usually blanked off when they run outside their allotted track. Tracks are typically numbered from left to right across the page (when viewed with depth or time increasing towards the bottom of the page).