At a recent presentation at the Aspen Ideas Festival, one of Shell’s experts on deepwater drilling suggested that flaws in the design of BP’s Macondo well were likely responsible for the blowout that led to the massive oil spill in the Gulf of Mexico. This reinforces the results of a recent Congressional investigation that criticized BP’s use of a “long string” system rather than a safer, but more expensive “liner-tieback” approach. Read this article to view the presentation.