Diamond Offshore
In the early 1960s, Brewster-Bartle, an onshore drilling company, filed bankruptcy. In 1964, Don McMahon acquired Brewster-Bartle from its bank creditors and formed Diamond M Drilling Company, named after Diamond M Acres, his ranch near Simonton, Texas, which then expanded into offshore drilling.
Diamond Offshore is a global leader in offshore drilling, with a fleet of 13 offshore drilling rigs, including nine semisubmersibles and four dynamically positioned drillships, offering contract drilling services to the oil industry all over the world.
Diamond Offshore can trace its roots all the way back to the beginnings of the offshore drilling business. Decades of innovation, many rig and company acquisitions, and an uncompromising dedication to safety are the chapters of Diamond Offshore's history that characterize them as a world leader in offshore drilling.
Diamond Offshore's fleet of offshore drilling rigs now includes nine semisubmersibles and four ultra-deepwater drillships that are in service across the world.
Website: http://www.diamondoffshore.com/
Headquarter: Katy, Texas, U.S.
Annual revenue: $1.5 billion
