Exhibit 8.1
SIGNIFICANT SUBSIDIARIES
The table below lists the Company's significant subsidiaries as of December 31, 2018:
Name of company | Country of Incorporation | Principal activities | Percent owned |
Drilling unit owning companies | |||
Asia Offshore Rig 1 Ltd | Bermuda | Owner of AOD 1 | 66.24% |
Asia Offshore Rig 2 Ltd | Bermuda | Owner of AOD 2 | 66.24% |
Asia Offshore Rig 3 Ltd | Bermuda | Owner of AOD 3 | 66.24% |
Sevan Brasil Ltd | Bermuda | Owner of Sevan Brasil | 100.00% |
Sevan Drilling Rig VI Pte Ltd | Singapore | Owner of Sevan Developer | 100.00% |
Sevan Driller Ltd | Bermuda | Owner of Sevan Driller | 100.00% |
Sevan Louisiana Hungary KFT | Hungary | Owner of Sevan Louisiana | 100.00% |
North Atlantic Alpha Ltd | Bermuda | Owner of West Alpha | 100.00% |
Seadrill Ariel Ltd. | Liberia | Owner of West Ariel | 100.00% |
Seadrill Callisto Ltd | Bermuda | Owner of West Callisto | 100.00% |
Seadrill Carina Ltd | Bermuda | Owner of West Carina | 100.00% |
Seadrill Castor Ltd | Bermuda | Owner of West Castor | 100.00% |
Seadrill Cressida Ltd | Bermuda | Owner of West Cressida | 100.00% |
Seadrill Defender (S) Pte Ltd | Singapore | Owner of West Defender | 100.00% |
Seadrill Eclipse Ltd | Bermuda | Owner of West Eclipse | 100.00% |
North Atlantic Elara Ltd | Bermuda | Owner of West Elara | 100.00% |
Seadrill Eminence Ltd | Bermuda | Owner of West Eminence | 100.00% |
North Atlantic Epsilon Ltd | Bermuda | Owner of West Epsilon | 100.00% |
Seadrill Freedom Ltd | Bermuda | Owner of West Freedom | 100.00% |
Seadrill Gemini Ltd | Bermuda | Owner of West Gemini | 100.00% |
Seadrill Jupiter Ltd. | Bermuda | Owner of West Jupiter | 100.00% |
North Atlantic Navigator Ltd | Bermuda | Owner of West Navigator | 100.00% |
Seadrill Neptune Hungary KFT | Bermuda | Owner of West Neptune | 100.00% |
Seadrill Orion Ltd | Bermuda | Owner of West Orion | 100.00% |
Seadrill Pegasus Pte Ltd | Singapore | Owner of West Pegasus | 100.00% |
North Atlantic Phoenix Ltd | Bermuda | Owner of West Phoenix | 100.00% |
Seadrill Saturn Ltd | Bermuda | Owner of West Saturn | 100.00% |
Seadrill Telesto Ltd | Bermuda | Owner of West Telesto | 100.00% |
Seadrill Tellus Ltd | Bermuda | Owner of West Tellus | 100.00% |
Seadrill Tucana Ltd | Bermuda | Owner of West Tucana | 100.00% |
North Atlantic Venture Ltd | Bermuda | Owner of West Venture | 100.00% |
Scorpion Vigilant Ltd | Bermuda | Owner of West Vigilant | 100.00% |
Drilling units under sale leaseback | |||
SFL Deepwater Ltd* | Bermuda | Owner of West Taurus | —% |
SFL Hercules Ltd* | Bermuda | Owner of West Hercules | —% |
SFL Linus Ltd* | Bermuda | Owner of West Linus | —% |
Contracting and management companies | |||
Seadrill Offshore AS - Europe operations | Norway | Finance Lessee | 100.00% |
Eastern Drilling AS | Norway | Onshore Services | 100.00% |
Seadrill UK Operations Ltd | United Kingdom | Rig Operator | 100.00% |
Seadrill Management Ltd | United Kingdom | Onshore Services | 100.00% |
Seadrill Deepwater Charterer Ltd | Bermuda | Finance Lessee | 1 |
Seadrill Insurance Ltd | Bermuda | Onshore services | 1 |
Seadrill Angola Lta | Angola | Onshore Services | 1 |
Seadrill Gulf Operations Neptune LLC | USA | Rig Operator | 1 |
Seadrill SeaMex SC Holdco Ltd | Bermuda | Onshore Finance | 1 |
Seadrill Treasury UK Ltd | United Kingdom | Onshore Finance | 1 |
Seadrill SeaMex 2 de Mexico S de RL de CV | Mexico | Onshore Finance | 1 |
Seadrill International Resourcing DMCC | UAE | Onshore Services | 1 |
Seadrill Global Services Ltd | Bermuda | Onshore Services | 1 |
Seadrill Management (S) Pte Ltd | Singapore | Onshore Services | 1 |
Seadrill Nigeria Operations Ltd | Nigeria | Onshore Services | 1 |
Seadrill Deepwater Units Pte Ltd | Singapore | Onshore Services | 1 |
Seadrill (Dalian) Consulting Co Ltd | China | Onshore Services | 1 |
Seadrill Americas INC | USA | Onshore Services | 1 |
Seadrill Serviços de Petróleo Ltda | Brasil | Rig Operator | 1 |
Seadrill Operations de Mexico S. de R.L. de C.V | Mexico | Onshore Services | 1 |
Seadrill Offshore Malaysia Sdn Bhd | Malaysia | Rig Operator | 1 |
Scorpion Labuan Ltd | Labuan | Intra-charterer | 1 |
Seadrill Newfoundland Operations Ltd | Canada | Onshore Services | 1 |
Seadrill UK Support Services Ltd | United Kingdom | Onshore Services | 1 |
North Atlantic Linus Charterer Ltd | Bermuda | Finance Lessee | 1 |
Seadrill Norway Crew AS | Norway | Onshore Services | 1 |
North Atlantic Crewing Ltd | Bermuda | Onshore Services | 1 |
Seadrill Europe Management AS | Norway | Onshore Services | 1 |
Sevan Drilling North America LLC | USA | Rig Operator | 1 |
Seadrill Jack-ups Contracting Ltd | Suriname | Rig Operator | 1 |
Holding Companies | |||
Seadrill North Atlantic Holdings Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Common Holdings Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Deepwater Holdings Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Jack Up Holding Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Member LLC | Marshall Islands | Holding Company | 100.00% |
Seadrill Investment Holding Company Ltd | Bermuda | Holding Company | 100.00% |
Seadrill New Finance Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Norway Operations Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Rig Holding Company Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Ltd | Bermuda | Holding Company | 100.00% |
Seadrill UK Ltd | United Kingdom | Holding Company | 100.00% |
Seadrill Partners LLC Holdco Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Seabras UK Ltd | United Kingdom | Holding Company | 100.00% |
Seadrill Sevan Holdings Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Seabras SP UK Ltd | United Kingdom | Holding Company | 100.00% |
Seadrill Mobile Units UK Ltd | United Kingdom | Holding Company | 100.00% |
Seadrill Seadragon UK Ltd | United Kingdom | Holding Company | 100.00% |
Seadrill Holdings Singapore Pte Ltd | Singapore | Holding Company | 100.00% |
Asia Offshore Drilling Ltd | Bermuda | Holding Company | 100.00% |
Scorpion Deepwater Ltd | Bermuda | Holding Company | 100.00% |
Scorpion International Ltd | Bermuda | Holding Company | 100.00% |
Seadrill GCC Operations Ltd | Bermuda | Holding Company | 100.00% |
Scorpion Drilling Ltd | Bermuda | Holding Company | 100.00% |
Seadrill Far East Ltd | Hong Kong | Holding Company | 100.00% |
Sevan Investimentos do Brasil Ltda | Brasil | Holding Company | 100.00% |
Sevan Drilling Rig IX Pte Ltd | Singapore | Holding Company | 100.00% |
Sevan Drilling Rig VI AS | Norway | Holding Company | 100.00% |
Seabras Serviços de Petróleo S.A. | Brasil | Holding Company | 100.00% |
Seabras Holdings GmbH | Austria | Holding Company | 100.00% |
Seabras Rig Holdings GmbH | Austria | Holding Company | 100.00% |
* Fully consolidated Variable interest entities