Safety and efficiency have always been of paramount importance in well operations and represent a significant part of Exploration & Production development costs. To ensure safe and cost-effective wells delivery, multiple key components need to be fully mastered, from well design/architecture to execution of a precise profile and good hole cleaning for effective completions. This session presents advanced technologies & innovations for reducing downhole problems/nonproductive time, and for optimizing costs in a wide range of domains, from casing design, torque & drag challenges, underbalanced/managed pressure drilling, BHA and bit selection, shale swelling, well control, total loss circulation of drilling fluids, side-tracking and more.