Seadrill Limited is a marine drilling contractor, whose majority shareholder is Cyprus' investment company Greenwich Holdings Ltd., through its subsidiary Hemen Holding Ltd. (23.6%). It was incorporated in 2005, in Bermuda, to provide services for global oil and gas industry, through the operation of its 7 drilling vessels, 12 semi-submersible platforms and 24 self-elevating platforms. The company carries out drilling works in Block BM-S-8 of the Carcará project, in Santos basin, São Paulo. After accepting bankruptcy in 2018, the company is restructuring its business. It is headquartered in London.