EX-8.1 2 exhibit812018.htm EXHIBIT 8.1 Exhibit


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