Diamond Offshore Drilling, Inc. (DO) specializes in providing contract drilling services to the global energy sector. Central to its global operations is a substantial fleet of offshore drilling rigs; as of December 31, 2021, this fleet comprised 12 units, specifically four drillships and eight semi-submersible rigs. The company caters to a diverse client base, including both independent and state-owned oil and gas enterprises. Established in 1953, Diamond Offshore maintains its corporate headquarters in Houston, Texas.


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