Name of company                                                                 

Country of Incorporation

Asia Offshore Drilling Limited

Bermuda

Eastern Drilling AS

Norway

North Atlantic Alpha Ltd.

Bermuda

North Atlantic Elara Ltd.

Bermuda

North Atlantic Epsilon Ltd.

Bermuda

North Atlantic Linus Charterer Ltd.

Bermuda

North Atlantic Management LLC

Russian Federation

North Atlantic Navigator Ltd.

Bermuda

North Atlantic Phoenix Ltd.

Bermuda

North Atlantic Venture Ltd.

Bermuda

Odfjell Drilling Services Company, Limited

Saudi Arabia

Scorpion Courageous Ltd.

Bermuda

Scorpion Deepwater B.V.

Netherlands

Scorpion Deepwater Ltd.

Bermuda

Scorpion Drilling Ltd.

Bermuda

Scorpion Freedom Ltd.

Bermuda

Scorpion International Ltd.

Bermuda

Scorpion Nederlandse B.V.

Netherlands

Scorpion Offshore, Inc.

United States

Scorpion Resolute Ltd.

Bermuda

Scorpion Rigs Ltd.

Bermuda

Scorpion Serviços Offshore Ltda.

Brazil

Scorpion USA Expats, Inc.

United States

Scorpion Vigilant Ltd.

Bermuda

SDS Drilling Ltd.

Bermuda

Seabras Holdings GmbH

Austria

Seabras Rig Holding GmbH

Austria

Sea Dragon de Mexico, S. de R.L. de C.V.

Mexico

Seadrill Abu Dhabi Operations Limited

Bermuda

Seadrill AMA Operations Ltd.

Bermuda

Seadrill Americas, Inc.

United States

Seadrill Angola Ltda.

Angola

Seadrill Aquila Ltd.

Bermuda

Seadrill Australia Pte. Ltd.

Singapore

Seadrill Brunei Ltd.

Bermuda

Seadrill Carina Ltd.

Bermuda

Seadrill Castor Ltd.

Bermuda

Seadrill Castor Pte. Ltd.

Singapore

Seadrill Common Holdings Ltd.

Bermuda

Seadrill Deepwater Charterer Ltd.

Bermuda

Seadrill Deepwater Contracting Ltd.

Bermuda

Seadrill Deepwater Crewing Ltd.

Bermuda

Seadrill Deepwater Holdings Ltd.

Bermuda

Seadrill Deepwater Units Pte. Ltd.

Singapore

Seadrill Dione Ltd.

Bermuda

Seadrill Eclipse Ltd.

Bermuda

Seadrill Eminence Ltd.

Bermuda

Seadrill Equatorial Guinea Ltd.

Bermuda

Seadrill Europe Management AS

Norway

Seadrill Far East Limited

Hong Kong

Seadrill Finance Limited

Bermuda

Seadrill Freedom Ltd

Bermuda

Seadrill Gemini Ltd.

Bermuda

Seadrill Global Services Ltd.

Bermuda

Seadrill Gulf Operations Neptune LLC

United States

Seadrill Holdings Singapore Pte. Ltd.

Singapore

Seadrill Hyperion Ltd.

Bermuda

Seadrill Insurance Ltd.

Bermuda

Seadrill International Resourcing DMCC

United Arab Emirates

Seadrill Investment Holding Company Limited

Bermuda

Seadrill Jack Up Holding Ltd.

Bermuda

Seadrill Jack Up I B.V.

Netherlands

Seadrill Jack Up II B.V.

Netherlands

Seadrill Jack-Ups Contracting Ltd.

Bermuda

Seadrill Jack-Ups Nigeria Limited

Nigeria

Seadrill Jupiter Ltd.

Bermuda

Seadrill JV Ghana Limited

Ghana

Seadrill Labuan Ltd

Malaysia

Seadrill Management (S) Pte. Ltd.

Singapore

Seadrill Management AME Ltd.

Bermuda

Seadrill Management Ltd.

United Kingdom

Seadrill Merger Sub, LLC

Marshall Islands

Seadrill Mimas Ltd.

Bermuda

Seadrill Mira Hungary Kft.

Hungary

Seadrill Mira Ltd.

Bermuda

Seadrill Neptune Hungary Kft.

Hungary

Seadrill Newfoundland Operations Ltd.

Canada

Seadrill Nigeria Deepwater Contracting Limited

Nigeria

Seadrill Nigeria Operations Limited

Nigeria

Seadrill North Atlantic Holdings Limited

Bermuda

Seadrill North Sea Crewing Ltd.

Bermuda

Seadrill Northern Operations Ltd.

Bermuda

Seadrill Norway Crew AS

Norway

Seadrill Norway Operations Ltd.

Bermuda

Seadrill Offshore AS

Norway

Seadrill Offshore Malaysia Sdn. Bhd.

Malaysia

Seadrill Offshore Nigeria Limited

Nigeria

Seadrill Offshore Singapore Pte. Ltd.

Singapore

Seadrill Operations de Mexico S. de R.L. de C.V.

Mexico

Seadrill Orion Ltd.

Bermuda

Seadrill Pegasus (S) Pte. Ltd.

Singapore

Seadrill Prospero Ltd.

Bermuda

Seadrill Proteus Ltd.

Bermuda

Seadrill Rhea Ltd.

Bermuda

Seadrill Rig Holding Company Limited

Bermuda

Seadrill Saturn Ltd.

Bermuda

Seadrill Saudi I B.V.

Netherlands

Seadrill Saudi II B.V.

Netherlands

Seadrill Saudi Limited Company

Saudi Arabia

Seadrill Serviços de Petróleo Ltda.

Brazil

Seadrill Sevan Holdings Limited

Bermuda

Seadrill Telesto Ltd.

Bermuda

Seadrill Tellus Ltd.

Bermuda

Seadrill Tethys Ltd.

Bermuda

Seadrill Titan Ltd.

Bermuda

Seadrill Titania S.à.r.I.

Luxembourg

Seadrill Treasury UK Limited

United Kingdom

Seadrill Triton Ltd.

Bermuda

Seadrill Tucana Ltd.

Bermuda

Seadrill UK Ltd.

United Kingdom

Seadrill UK Operations Ltd

United Kingdom

Seadrill UK Support Services Ltd

United Kingdom

Seadrill Umbriel Ltd.

Bermuda

Sevan Brasil Ltd.

Bermuda

Sevan Developer Ltd.

Bermuda

Sevan Driller Ltd.

Bermuda

Sevan Drilling Limited

United Kingdom

Sevan Drilling North America LLC

United States

Sevan Drilling Pte. Ltd.

Singapore

Sevan Drilling Rig II AS

Norway

Sevan Drilling Rig II Pte. Ltd.

Singapore

Sevan Drilling Rig IX Pte. Ltd.

Singapore

Sevan Drilling Rig V Pte. Ltd.

Singapore

Sevan Drilling Rig VI AS

Norway

Sevan Drilling Rig VI Pte. Ltd.

Singapore

Sevan Investimentos do Brasil Ltda.

Brazil

Sevan Louisiana Hungary Kft.

Hungary

Sevan Marine Serviços de Perfuração Ltda.

Brazil

SOAS Serviços de Petróleo Ltda.

Brazil