A seminar entitled (The Impact of drilling well oil operations On composition and petrophysical characteristics of rock succession  Nonproductive time Rumaila field, Southern Iraq ). Hold at the College of Science, Geology Department. The presenter Mayssa Nori Shehab demonstrates the most important objectives in this study, Investigate successful and lousy wells in Dammam and Hartha Formations.

Determine NPT and the effective drilling parameters. Matching the distribution of losses on Dammam and Hartha formation with the distribution of seismic features. Investigate the risk points in order to prevent in the future.