Keywords: Discoverer-clear-leader.jpg en The Transocean drill vessel Discoverer Clear Leader prepares for drilling operations for the Deepwater Horizon oil response in the Gulf of Mexico July 9 2010 The Discoverer Clear Leader an 835-foot ultra-deepwater drilling rig can recover more than 15 000 barrels of oil and 30 million cubic feet of natural gas per day with the help of the supply vessel Celena Chouest that provides drilling mud and other material http //www flickr com/photos/deepwaterhorizonresponse/4784532340/in/photostream/ U S Coast Guard photo by Petty Officer 1st Class Tiffany Carvalho 2010-07-09 Deepwater Horizon oil spill Discoverer Clear Leader ship 2009 PD-USGov |