EX-21.1 4 nov-ex21_1.htm EX-21.1

|  | Exhibit 21.1
SUBSIDIARIES OF THE REGISTRANT
Name |  | State or Country of Incorporation
Acker Holdings LLC |  | United States
Advanced Wirecloth, S. de R.L. de C.V. |  | Mexico
AF Global FZE |  | United Arab Emirates
Ameron B.V. |  | Netherlands
Ameron International Corporation |  | United States
Ameron Singapore Holding, LLC |  | United States
APL Norway AS |  | Norway
Arabian Rig Manufacturing Company |  | Saudi Arabia
ASEP Otomotiv Sanayi Ticaret Ltd. |  | Turkey
Big Red Tubulars Limited |  | Virgin Islands, British
Bondstrand Ltd. |  | Saudi Arabia
Chemineer, Inc. |  | United States
Coil Services Middle East LLC |  | United Arab Emirates
Coöperatie Intelliserv Holding U.A. |  | Netherlands
Coöperatie NOV NL U.A. |  | Netherlands
Environmental Procedures LLC |  | United States
Extract Companies, LLC |  | United States
Extract Production Services, LLC |  | United States
Extract Surface Systems, LLC |  | United States
Fiber Glass Systems (Qingdao) Composite Piping Co., Ltd. |  | China
Fiber Glass Systems Oman L.L.C. |  | Oman
Fiber Glass Systems, L.P. |  | United States
Fibra Ingenieria y Construccion S.A. |  | Chile
Fjords Processing France SAS |  | France
Fjords Processing Korea Co. Ltd. |  | Korea, Republic of
Fjords Processing Limited [dormant - in strike-off process] |  | United Kingdom
Fjords Processing Middle East DMCC |  | United Arab Emirates
Fortress Downhole Tools, LLC |  | United States
GPEX, L.P. |  | United States
Grant Prideco (Singapore) Pte Ltd |  | Singapore
Grant Prideco de Venezuela, S.A. |  | Venezuela, Bolivarian Republic of
Grant Prideco III C. V. |  | Netherlands
Grant Prideco Jersey Limited |  | Delaware
Grant Prideco Mauritius Limited |  | Mauritius
Grant Prideco Netherlands B.V. |  | Netherlands
Grant Prideco, Inc. |  | United States
Grant Prideco, S. de R.L. de C.V. |  | Mexico
GustoMSC B.V. |  | Netherlands
Hebei Huayouyiji Tuboscope Coating Co., Ltd. |  | China
Hellenes Limited |  | United Kingdom
Hydralift AmClyde, Inc. |  | United States
Intelliserv GP Holdings LLC |  | United States
Intelliserv International Holding, Ltd |  | Cayman Islands
IntelliServ Norway AS |  | Norway
Intelliserv, Inc. |  | United States
Intelliserv, LLC |  | United States
Keystone Tower Systems, Inc. |  | United States
KTS Texas #1, LLC |  | United States

Midsund Bruk AS |  | Norway
Mono Group Pension Trustees Limited |  | United Kingdom
Mono Pumps New Zealand Company |  | New Zealand
Moyno, Inc. |  | United States
National Oilwell (U.K.) Limited |  | United Kingdom
National Oilwell Algerie |  | Algeria
National Oilwell de Venezuela, C.A. |  | Venezuela, Bolivarian Republic of
National Oilwell Varco (Beijing) Investment Management Co. Ltd. |  | China
National Oilwell Varco (Thailand) Ltd. |  | Thailand
National Oilwell Varco Algeria |  | Algeria
National Oilwell Varco Almansoori Services |  | United Arab Emirates
National Oilwell Varco Bahrain WLL |  | Bahrain
National Oilwell Varco Belgium SA |  | Belgium
National Oilwell Varco de Bolivia S.R.L. |  | Bolivia
National Oilwell Varco de Chile - Servicios Limitada |  | Chile
National Oilwell Varco Denmark I/S |  | Denmark
National Oilwell Varco do Brasil Ltda. |  | Brazil
National Oilwell Varco Egypt LLC |  | Egypt
National Oilwell Varco Eurasia, LLC |  | Russian Federation
National Oilwell Varco Guyana Inc. |  | Guyana
National Oilwell Varco Hungary Limited Liability Company |  | Hungary
National Oilwell Varco Korea Co., Ltd. |  | Korea, Republic of
National Oilwell Varco MSW S.A. |  | Argentina
National Oilwell Varco Muscat SPC |  | Oman
National Oilwell Varco Norway AS |  | Norway
National Oilwell Varco Peru S.R.L. |  | Peru
National Oilwell Varco Petroleum Equipment (Shanghai) Co., Ltd. |  | China
National Oilwell Varco Poland Sp.z.o.o. |  | Poland
National Oilwell Varco Pte. Ltd. |  | Singapore
National Oilwell Varco Romania S.R.L. |  | Romania
National Oilwell Varco Solutions, S.A. de C.V. |  | Mexico
National Oilwell Varco UK Limited |  | United Kingdom
National Oilwell Varco Ukraine LLC |  | Ukraine
National Oilwell Varco, L.P. |  | United States
NOV - Oil Services Angola, LDA. |  | Angola
NOV (Asia) Inc. [In liquidation] |  | Mauritius
NOV (Barbados) Holding SRL |  | Barbados
NOV (Barbados) SRL [In liquidation] |  | Barbados
NOV (Caymans), Ltd. |  | Cayman Islands
NOV (Jiangsu) Energy Equipment Limited |  | China
NOV (Malaysia) Sdn. Bhd. [in liquidation] |  | Malaysia
NOV Africa Pty Ltd |  | South Africa
NOV APL Limited |  | Cyprus
NOV Australia Pty Ltd |  | Australia
NOV Azerbaijan LLC |  | United States
NOV Brandt Europe France |  | France
NOV Brandt Oilfield Services Middle East LLC |  | United Arab Emirates
NOV Canada ULC |  | Canada
NOV CAPS Pte. Ltd. |  | Singapore
NOV Completion and Production Solutions Korea Ltd. |  | Korea, Republic of
NOV Completion Tools LLC |  | Russian Federation
NOV Denmark Coöperatief U.A. |  | Netherlands
NOV Digital Technologies Private Limited |  | India

NOV Doha Energy Trading and Services LLC |  | Qatar
NOV Doha Factory for Metal Products LLC |  | Qatar
NOV Downhole Argentina, LLC |  | United States
NOV Downhole Eurasia Limited |  | United Kingdom
NOV Downhole Italia S.R.L. |  | Italy
NOV Downhole KZ, LLP |  | Kazakhstan
NOV Downhole Malaysia Sdn. Bhd. [in liquidation] |  | Malaysia
NOV Elmar (Middle East) Limited |  | United Kingdom
NOV Energy Kuwait for Maintenance of Oil Facilities, Wells, Refineries and Petrochemicals SPC |  | Kuwait
NOV Energy Mexico, S. de R.L. De C.V. |  | Mexico
NOV Equipment Manufacturing Sole Proprietorship LLC |  | United Arab Emirates
NOV Eurasia Holding LLC |  | United States
NOV Expatriate Services, Inc. |  | United States
NOV FGS Malaysia Sdn Bhd |  | Malaysia
NOV FGS Singapore (Pte.) Ltd |  | Singapore
NOV Flexibles Equipamentos E Servicos Ltda. |  | Brazil
NOV France SAS |  | France
NOV Gabon SARL |  | Gabon
NOV GEO LP1 LLC |  | United States
NOV GEO LP2 LLC |  | United States
NOV Germany GmbH |  | Germany
NOV Germany Holding GmbH |  | Germany
NOV Ghana Limited |  | Ghana
NOV Grant Prideco L.L.C. |  | United Arab Emirates
NOV Holding Danmark ApS |  | Denmark
NOV Holding UK 1 Limited |  | United Kingdom
NOV Holding UK 2 Limited |  | United Kingdom
NOV Holdings B.V. |  | Netherlands
NOV India Private Limited |  | India
NOV Intelliserv UK Limited |  | United Kingdom
NOV International Holding LLC |  | United States
NOV Kenya Limited |  | Kenya
NOV Kostroma LLC |  | Russian Federation
NOV Kuwait Light & Heavy Equipment Repairing & Maintenance Co. |  | Kuwait
NOV Mexico Holding LLC |  | United States
NOV MFG India Private Limited |  | India
NOV Middle East FZE |  | United Arab Emirates
NOV Middle East Oil and Gas Wells Equipments and Devices LLC |  | United Arab Emirates
NOV Mozambique Limitada |  | Mozambique
NOV NL Mexico Holding B.V. |  | Netherlands
NOV Oil & Gas Services Egypt (S.A.E) |  | Egypt
NOV Oil & Gas Services Sénégal S.A.R.L. |  | Senegal
NOV Oil & Gas Services Uganda Limited |  | Uganda, Republic of
NOV Oil and Gas Services Ghana Limited |  | Ghana
NOV Oil and Gas Services Namibia (Proprietary) Limited |  | Namibia
NOV Oil and Gas Services Nigeria Limited |  | Nigeria
NOV Oil and Gas Services South Africa (Pty) Limited |  | South Africa
NOV Oilfield Services Tanzania Limited |  | Tanzania, United Republic of
NOV Oilfield Services Vostok LLC |  | Russian Federation
NOV Oilfield Solutions Ltd. |  | Nigeria
NOV Park II B.V. |  | Netherlands
NOV Process & Flow Technologies AS |  | Norway

NOV Process & Flow Technologies Malaysia Sdn. Bhd. |  | Malaysia
NOV Process & Flow Technologies UK Limited |  | United Kingdom
NOV Products Middle East FZE |  | United Arab Emirates
NOV QFZ LLC |  | Qatar
NOV Rig Solutions Pte. Ltd. |  | Singapore
NOV Romania, LLC |  | United States
NOV Saudi Arabia Co. Ltd. |  | Saudi Arabia
NOV Saudi Arabia Trading Co. |  | Saudi Arabia
NOV Services Ltd. |  | Cayman Islands
NOV Shared Services Mexico, S. de R.L. de C.V. |  | Mexico
NOV Tuboscope Italia S.R.L. |  | Italy
NOV Tuboscope NL B.V. |  | Netherlands
NOV Tubulars and Connectors Ltd. |  | Nigeria
NOV UK Holdings LLC |  | United States
NOV UK Korea LP |  | United Kingdom
NOV Wellbore Technologies do Brasil Equipamentos E Serviços Ltda. |  | Brazil
NOV Wellbore Technologies Norway LLC |  | United States
NOV Wellsite Services Germany GmbH |  | Germany
NOV Worldwide B.V. |  | Netherlands
NOV-BLM SAS |  | France
NOVM Holding LLC |  | United States
NOW International LLC |  | United States
NOW Oilfield Services, LLC |  | United States
NQL Holland B.V. |  | Netherlands
Pesaka Inspection Services SDN.BHD. |  | Malaysia
Pipex Limited |  | United Kingdom
PT Fjords Processing Indonesia |  | Indonesia
PT H-Tech Oilfield Equipment |  | Indonesia
PT Managed Pressure Operations |  | Indonesia
PT National Oilwell Varco |  | Indonesia
PT NOV Oilfield Services |  | Indonesia
PT Profab Indonesia |  | Indonesia
R&M Energy Systems de Venezuela, C.A. |  | Venezuela, Bolivarian Republic of
R&M Singapore Holding LLC |  | United States
RE.MAC.UT. S.R.L. |  | Italy
ReedHycalog International Holding, LLC |  | United States
ReedHycalog UK Limited |  | United Kingdom
ReedHycalog, L.P. |  | United States
RHI Holding LLC |  | United States
Robannic Overseas Finance VBA |  | Aruba
Robbins & Myers B.V. |  | Netherlands
Robbins & Myers Holdings, LLC |  | United States
Robbins & Myers Italia S.R.L. |  | Italy
Robbins & Myers N.V. |  | Curacao
Robbins & Myers, Inc. |  | United States
STAR Sudamtex Tubulares S.A. |  | Venezuela, Bolivarian Republic of
Subseaflex Holding ApS |  | Denmark
T-3 Energy Services Cayman Holdings, Ltd. |  | Cayman Islands
T-3 Energy Services Cayman, Ltd. |  | Cayman Islands
T-3 Energy Services, LLC |  | United States
Telluride Insurance Limited |  | Bermuda
Tianjin Grant TPCO Drilling Tools Company Limited |  | China
Tuboscope & Co. LLC |  | Oman

Tuboscope (Holding U.S.) LLC |  | United States
Tuboscope Brandt de Venezuela, S.A. |  | Venezuela, Bolivarian Republic of
Tuboscope Norge AS |  | Norway
Tuboscope Vetco (France) SAS |  | France
Tuboscope Vetco (Österreich) GmbH |  | Austria
Tuboscope Vetco Capital Limited |  | United Kingdom
Tuboscope Vetco de Argentina S.A. |  | Argentina
Tuboscope Vetco Moscow CJSC |  | Russian Federation
Tubular Coatings Solutions Ltd. |  | Saudi Arabia
Tucom Composites Polyester Sanayi Ticaret Ltd. |  | Turkey
Varco BJ B.V. |  | Netherlands
Varco CIS, LLC |  | Russian Federation
Varco International de Venezuela, C.A. |  | Venezuela, Bolivarian Republic of
Varco US Holdings LLC |  | United States
Varco, L.P. |  | United States
Vetco Enterprise GmbH |  | Switzerland
Vetco Saudi Arabia Ltd. |  | Saudi Arabia
Visible Assets, Inc. |  | United States
voestalpine Tubulars Corporation |  | United States
voestalpine Tubulars GmbH |  | Austria
voestalpine Tubulars GmbH & Co KG |  | Austria
Woolley, Inc. |  | United States
XL Systems Antilles, N.V. |  | Curacao
XL Systems Europe B.V. |  | Netherlands