Deepwater Horizon

摘要

The Deepwater Horizon drilling rig was built in 2001 as a semi-submersible platform specially designed for operations in ultra-deep water. The rig employs a dynamic positioning system to maintain a highly accurate position in open seas with the use only of its propellers. In September 2009 the rig drilled the deepest oil well in history, at a vertical depth of 10,683 metres.