The reducing the time for drilling a well has a large financial impact for the company since on-shore drilling costs are upwards of $80,000 / day and off-shore can easily run to $250,000 / day. In addition, there is the opportunity to start the production earlier. The traditional way to monitor the drilling of wells is to analyze non-time based data as a function of drill depth, which is effective for analyzing the geological aspect allowing the crews to make adjustments based on the material properties at different depths. This approach does not provide any information on how to monitor and improve the drilling operation itself. High fidelity time-based data is available together with new PI System capabilities to create a surveillance on the state of the drilling operation. This presentation will demonstrate how to use the Asset Framework, Event Frames, and Asset Based Analytics to troubleshoot a number of Event-based issues in drilling new wells, such as Rotating / Sliding, Stick Slip, Connection, Survey, Tripping In / Tripping Out, reaming Forward / Back, Circulating, On / Off Bottom and In / Out Slips. Tracking and analyzing these events will provide the ability to reduce their duration, when desired, and hence further reduce costly drilling days.