There at two main types of disaster movies — those based on loose scientific fact of some looming disaster and then actual depictions (movie-style), and those that recount an actual disaster.
Deep Water Horizon is the actual disaster and is in the latter category of films. The
movie trailer for Deep Water Horizon gives you the drama of that event.
For a more technical review of the circumstances that led to the disaster,
see this movie review by an engineering technical expert familiar with the technologies used for ocean drilling.
Like most human-caused disasters, it usually takes multiple system failures and short-cut processes to produce a worst-case event. Probably the most damning aspect is the loose safety culture that led to the disaster in the first place.
Claire Rubin shared the link above to the movie review.
Eric Holdeman is a contributing writer for Emergency Management magazine and is the former director of the King County, Wash., Office of Emergency Management.