The numerous technical and operational breakdowns that contributed to the Deepwater Horizon oil rig explosion and spill from the Macondo well in the Gulf of Mexico suggest the lack of a suitable approach for managing the inherent risks, uncertainties, and dangers associated with deepwater drilling operations and a failure to learn from previous "near misses,"
says an interim report of preliminary findings from a committee of the National Academy of Engineering and National Research Council. The events also suggest insufficient checks and balances for critical decisions impacting the schedule for "abandoning" the exploratory well -- or sealing it in transition to production -- and for considering well safety.