Abstract

Well logs of deviated wells are generally displayed against measured depth along vertical axis. TVD log is the display of logs against True Vertical Depth. It is the log corrected for vertical shortening and thus gives the true depth of various zones identified by log motifs. However, TVD log does not take in to account the horizontal drift. This creates problems in log correlation of dipping beds. Two-dimensional displays of well logs resolve such problems and helps in proper correlation of logs. In conventional display of logs for every depth point there is a single value of each log in the recorded section. Two-dimensional display of logs involves TVD, Horizontal drift and the value of the log recorded. A simple technique is evolved for generating a two-dimensional log using co-ordinate geometry on Excel sheet. The generated log can be displayed using any software for log data display