EX-21.1 2 d118658dex211.htm EX-21.1

Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Name |  | State or Country of Incorporation
Ackerman Holdings C.V. |  | Netherlands
Ackerman Holdings GP LLC |  | United States
Ackerman International Holland B.V. |  | Netherlands
Advanced Wirecloth, LLC |  | United States
AG Holding UK |  | United Kingdom
Aggregate Plant Products Co. |  | United States
Amercoat Corporation |  | United States
American Pipe and Construction International |  | United States
Ameron (UK) Limited |  | United Kingdom
Ameron Brasil Industria E Comercio de Tubos Ltda |  | Brazil
Ameron Composites, Inc. |  | United States
Ameron Egypt |  | Egypt
Ameron Holdings II Pte Ltd |  | Singapore
Ameron Holdings Pte. Ltd. |  | Singapore
Ameron Holdings, Inc. |  | United States
Ameron International Corporation |  | United States
Ameron Pole Products LLC |  | United States
Ameron Saudi Arabian Limited (ASAL) |  | Saudi Arabia
Ameron Singapore Holding, LLC |  | United States
Ameron Singapore Poly Holdings Pte. Ltd. |  | Singapore
Ameron Trading Holdings Pte. Ltd. |  | Singapore
Ameron Water Transmission Group, LLC |  | United States
Andergauge Limited |  | United Kingdom
Andergauge Redback, LLC |  | United States
Andergauge USA, Inc. |  | United States
APL (UK) Limited |  | United Kingdom
APL do Brasil Ltda |  | Brazil
APL France SAS |  | France
APL Management Pte Ltd |  | Singapore
APL Norway AS |  | Norway
APL Technology AS |  | Norway
ASEP Group Holding BV |  | Netherlands
ASEP Otomotiv Sanayi Ticaret Ltd. |  | Turkey
Aswan National Oilwell Varco (a limited liability company) |  | United Arab Emirates
Big Red Tubulars Industries LLC |  | United Arab Emirates
Big Red Tubulars Limited |  | Virgin Islands, British
Black Max Argentina S.A. |  | Argentina
Bolenco Corporation |  | United States
Bondstrand Ltd. |  | Saudi Arabia
Bowen Downhole LLC |  | United States
Bowen Downhole, Inc. |  | United States
Brandt Energy Environmental, L.P. |  | United States
Brandt Interests, Inc. |  | United States
Brandt Oilfield Services |  | Singapore
Brandt Oilfield Services (M) Sdn. Bhd. |  | Malaysia
C.M.A. Canavera S.R.l. |  | Italy
Camco Drilling Group Limited |  | United Kingdom
Chemineer Limited |  | United Kingdom
Chemineer, Inc. |  | United States
CJSC Fidmash |  | Belarus
CJSC Novmash |  | Belarus

1

Name |  | State or Country of Incorporation
Coil Services Middle East LLC |  | United Arab Emirates
Cooperatie Intelliserv Holding U.A. |  | Netherlands
Cooperatie NOV NL U.A. |  | Netherlands
Corporacion Californiana de Tuberias APS S. de R.L. de C.V. |  | Mexico
Dalian Moyno Pump Co., Ltd. |  | China
Danco AS |  | Norway
Devin International, Inc. |  | United States
Dreco Canada CV |  | Netherlands
Dreco Canada GP LLC |  | United States
Dreco Canada L.P. |  | Canada
Dreco Cayman GP LLC |  | United States
Dreco Cayman L.P. |  | Cayman Islands
Dreco DHT Holding BV |  | Netherlands
Dreco DHT, Inc. |  | United States
Dreco Eastern Europe ULC |  | Canada
Dreco Energy Holding BV |  | Netherlands
Dreco Energy NL Cooperatief U.A. |  | Netherlands
Dreco Energy Services ULC |  | Canada
Dreco Europe Limited |  | United Kingdom
Dreco International Holdings ULC |  | Canada
Dreco Limited |  | United Kingdom
Dreco LLC |  | United States
Dupre International Nigeria |  | Nigeria
E.C. Motors, Inc. |  | United States
Elmar Far East Pty Ltd |  | Australia
Energy Equipment Corporation Limited |  | United Kingdom
Enerpro de Mexico, S.A. de C.V. |  | Mexico
Environmental Procedures LLC |  | United States
Fiber Glass System (Suzhou) Co. Ltd. |  | China
Fiber Glass Systems (Harbin) Co., Ltd. |  | China
Fiber Glass Systems Holdings, LLC |  | United States
Fiber Glass Systems Oman L.L.C. |  | Oman
Fiber Glass Systems, L.P. |  | United States
Fiber Glass Trading (Shanghai) Co. Ltd. |  | China
Fiberspar Australia Pty. Ltd. |  | Australia
Fiberspar Corporation |  | United States
FIBERSPAR LINEPIPE CANADA LTD. |  | Canada
FidService, LLC |  | Russian Federation
Forth Valley Engineering Limited |  | United Kingdom
Fryma S.a.r.l. |  | France
GP USA Holding, LLC |  | United States
GPEX, L.P. |  | United States
Grant Prideco (Jiangsu) Drilling Products Co., Ltd |  | China
Grant Prideco (Singapore) Pte Ltd |  | Singapore
Grant Prideco AB TCA Holding LLC |  | United States
Grant Prideco Asia (Singapore) Pte Ltd |  | Singapore
Grant Prideco de Venezuela, S.A. |  | Venezuela
Grant Prideco European Holding, LLC |  | United States
Grant Prideco Finance, LLC |  | United States
Grant Prideco Holding, LLC |  | United States
Grant Prideco III C.V. |  | Netherlands

2

Name |  | State or Country of Incorporation
Grant Prideco Jersey Limited |  | Jersey
Grant Prideco Mauritius Limited |  | Mauritius
Grant Prideco Netherlands B.V. |  | Netherlands
Grant Prideco PC Composites Holdings, LLC |  | United States
Grant Prideco USA, LLC |  | United States
Grant Prideco, Inc. |  | United States
Grant Prideco, L.P. |  | United States
Grant Prideco, S. de R.L. de C.V. |  | Mexico
Greystone Technologies Pty. Ltd. |  | Australia
Hebei Huayouyiji Tuboscope Coating Co., Ltd. |  | China
Hitec AS |  | Norway
Hitec Dreco Limited |  | United Kingdom
Hydralift AmClyde, Inc. |  | United States
Hydralift AS |  | Norway
Hydralift France SAS |  | France
Hydralift Holdings UK Ltd. |  | United Kingdom
Hydra-Rig, Inc. |  | United States
Inspecciones y Pruebas No Destructivs, S.A. de C.V. |  | Mexico
Intellipipe, Inc. |  | United States
IntelliServ do Brasil Equipamentos e Serviços Para Petroleo Ltda |  | Brazil
Intelliserv GP Holdings LLC |  | United States
Intelliserv International Holding, Ltd |  | Cayman Islands
Intelliserv Mexico, S. de R.L. de C.V. |  | Mexico
IntelliServ Norway AS |  | Norway
Intelliserv, Inc. |  | United States
Intelliserv, LLC |  | United States
Interval LLC |  | Russian Federation
JiangYin Tuboscope Tubular Development Co., Ltd |  | China
LSI Asia Pacific Pte. Ltd. |  | Singapore
Merpro Americas, Inc. |  | United States
Merpro Group Limited |  | United Kingdom
Merpro Limited |  | United Kingdom
Merpro Machining & Threading Limited |  | United Kingdom
Merpro Products Limited |  | United Kingdom
Merpro Tortek Limited |  | United Kingdom
Mono Group Pension Trustees Limited |  | United Kingdom
Mono Pumps New Zealand Company |  | New Zealand
Monoflo NOV S.A.I.C. |  | Argentina
Moyno de Mexico, S.A. de C.V. |  | Mexico
Moyno, Inc. |  | United States
Mustang Capital Corp. |  | United States
National Oilwell (U.K.) Limited |  | United Kingdom
National Oilwell Algerie |  | Algeria
National Oilwell de Venezuela, C.A. |  | Venezuela
National Oilwell DHT, LP |  | United States
National Oilwell Middle East Company |  | Canada
National Oilwell Poland Sp.z.o.o. |  | Poland
National Oilwell Services de Mexico de C.V. |  | Mexico
National Oilwell Varco (Beijing) Investment Management Co. Ltd. |  | China
National Oilwell Varco (Thailand) Ltd. |  | Thailand
National Oilwell Varco Almansoori Services |  | United Arab Emirates

3

Name |  | State or Country of Incorporation
National Oilwell Varco Bahrain WLL |  | Bahrain
National Oilwell Varco Belgium |  | Belgium
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 Eurasia, LLC |  | Russian Federation
National Oilwell Varco Guatemala, Limitada |  | Guatelmala
National Oilwell Varco Holdings LLC |  | United States
National Oilwell Varco Korea Co., Ltd. |  | Korea, Republic of
National Oilwell Varco Mexico, S.A de C.V. |  | Mexico
National Oilwell Varco MSW S.A. |  | Argentina
National Oilwell Varco Muscat L.L.C. |  | 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 Pte. Ltd. |  | Singapore
National Oilwell Varco Rig Equipment Trading (Shanghai) Co., Ltd. |  | China
National Oilwell Varco Solutions S.A. de C.V. |  | Mexico
National Oilwell Varco UK Limited |  | United Kingdom
National Oilwell Varco, Inc. |  | United States
National Oilwell Varco, L.P. |  | United States
National-Oilwell Pte. Ltd. |  | Singapore
National-Oilwell Pty. Ltd. |  | Australia
New Holland Cooperatief U.A. |  | Netherlands
NOCL Holding BV |  | Netherlands
NOV (Asia), Inc. |  | Mauritius
NOV (Barbados) SRL |  | Barbados
NOV (Caymans), Ltd. |  | Cayman Islands
NOV (Malaysia) Sdn. Bhd. |  | Malaysia
NOV Ameron de Mexico, S. de R.L. de C.V. |  | Mexico
NOV Ameron de SLRC, S. de R.L. de C.V. |  | Mexico
NOV APL Limited |  | Cyprus
NOV ASEP Elmar do Brasil Equipamentos E Servicos Para Petroleu Ltda. |  | Brazil
NOV ASEP ELMAR MEXICO, S. DE R.L. DE C.V. |  | Mexico
NOV Australia Pty Ltd |  | Australia
NOV Brandt Europe France |  | France
NOV Brandt Oilfield Services Middle East LLC |  | United Arab Emirates
NOV Condor, LLC |  | United States
NOV CV1 GP LLC |  | United States
NOV Denmark Cooperatief U.A. |  | Netherlands
NOV Devin Energia Servicios do Brasil Ltda. |  | Brazil
NOV DH de Mexico S. de R.L. de C.V. |  | Mexico
NOV DHT Canada Holding ULC |  | Canada
NOV DOWNHOLE ALGERIA SERVICES EURL |  | Algeria
NOV Downhole Argentina, LLC |  | United States
NOV Downhole Azerbaijan, LLC |  | United States
NOV Downhole Bolivia S.R.L. |  | Bolivia
NOV Downhole Colombia, LLC |  | United States
NOV Downhole Comercialização de Equipamento para Petroleo Ltda |  | Brazil
NOV Downhole Congo, LLC |  | United States
NOV Downhole del Ecuador Cia. Ltda. |  | Ecuador

4

Name |  | State or Country of Incorporation
NOV Downhole Eurasia Limited |  | United Kingdom
NOV Downhole Europe B.V. |  | Netherlands
NOV Downhole Germany GmbH |  | Germany
NOV Downhole Italia S.R.L. |  | Italy
NOV Downhole Kazakhstan, LLC |  | United States
NOV Downhole Malaysia Sdn. Bhd. |  | Malaysia
NOV Downhole Norway, LLC |  | United States
NOV Downhole Pty Ltd |  | Australia
NOV Downhole Thailand, LLC |  | United States
NOV Dreco GP LLC |  | United States
NOV EAST BV |  | Netherlands
NOV Egypt FZ LLC |  | Egypt
NOV Elmar (Middle East) Limited |  | United Kingdom
NOV Elmar NL B.V. |  | Netherlands
NOV Elmar Pte Ltd |  | Singapore
NOV Enerflow ULC |  | Canada
NOV EU Acquisition SNC |  | France
NOV Eurasia Holding LLC |  | United States
NOV European Holding LLC |  | United States
NOV Expatriate Services, Inc. |  | United States
NOV Far East B.V. |  | Netherlands
NOV FGS Maylasia Sdn Bhd |  | Malaysia
NOV FGS Singapore (Pte.) Ltd |  | Singapore
NOV Fiber Glass Systems B.V. |  | Netherlands
NOV Fiber Glass Systems Fabricacao De Tubos E Conexoes Ltda |  | Brazil
NOV Flexibles Equipamentos E Servicos Ltda. |  | Brazil
NOV Flexibles Holding ApS |  | Denmark
NOV Flexibles UK Ltd. |  | United Kingdom
NOV Floating Production AS |  | Norway
NOV Fluid Control B.V. |  | Netherlands
NOV GEO Cayman Holdings Limited |  | Cayman Islands
NOV GEO GP LLC |  | United States
NOV GEO LP1 CV |  | Netherlands
NOV Ghana Limited |  | Ghana
NOV GP Holding LLC |  | United States
NOV GP Holding, L.P. |  | United States
NOV GP Sub LLC |  | United States
NOV GP1 Holding LLC |  | United States
NOV Group Holdings Limited |  | United Kingdom
NOV Holding Danmark ApS |  | Denmark
NOV Holding Germany GmbH & Co KG |  | Germany
NOV Holding Germany Management GmbH |  | Germany
NOV Holdings BV |  | Netherlands
NOV Hydra Rig Pte. Ltd |  | Singapore
NOV I LLC |  | United States
NOV India Private Limited |  | India
NOV Intelliserv UK Limited |  | United Kingdom
NOV International Holding BV |  | Netherlands
NOV International Holdings C.V. |  | Netherlands
NOV International Holdings GP LLC |  | United States
NOV Kenya Limited |  | Kenya

5

Name |  | State or Country of Incorporation
NOV Kostroma LLC |  | Russian Federation
NOV Mexico Holding LLC |  | United States
NOV Mission Products UK Limited |  | United Kingdom
NOV Mozambique Limitada |  | Mozambique
NOV North America I/P, LLC |  | United States
NOV Norway 1 Holding LLC |  | United States
NOV Norway 2 Holding LLC |  | United States
NOV Norway 3 Holding LLC |  | United States
NOV Norway GP 1 ANS |  | Norway
NOV Norway GP 2 ANS |  | Norway
NOV Norway GP 3 ANS |  | Norway
NOV Oil & Gas Services Angola, Ltd. |  | Angola
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
NOV Oilfield Services Vostok LLC |  | Russian Federation
NOV Oilfield Solutions |  | Nigeria
NOV Oslo Holding LLC |  | United States
NOV Park I BV |  | Netherlands
NOV Park II BV |  | Netherlands
NOV Pressure Performance Systems Comercialização de Equipamentos e Prestação de Serviços Técnicos Ltda. |  | Brazil
NOV Process & Flow Technologies UK Limited |  | United Kingdom
NOV Process & Flow Technologies US, Inc. |  | United States
NOV Rig Solutions Pte. Ltd. |  | Singapore
NOV Rigstore, Inc. |  | United States
NOV Romania, LLC |  | United States
NOV Saudi Arabia Co., Ltd. |  | Saudi Arabia
NOV Saudi Arabia Trading Co. Ltd. |  | Saudi Arabia
NOV Services Ltd. |  | Cayman Islands
NOV Servicios de Personal Mexico, S. de R.L. de C.V. |  | Mexico
NOV Tuboscope Italia S.R.l. |  | Italy
NOV Tuboscope Middle East LLC |  | United Arab Emirates
NOV Tuboscope NL B.V. |  | Netherlands
NOV Tubulars and Connectors Ltd. |  | Nigeria
NOV TV2 LLC |  | United States
NOV TVI LLC |  | United States
NOV UK (Angola Acquisitions) Limited |  | United Kingdom
NOV UK Finance Limited |  | United Kingdom
NOV UK Holdings Limited |  | United Kingdom
NOV UK Korea LP |  | United Kingdom
NOV West BV |  | Netherlands
NOV Worldwide CV |  | Netherlands
NOV-BLM SAS |  | France
NOV-Fabtech FZCO |  | United Arab Emirates
NOVM Holding LLC |  | United States
NOVN Portugal—Servicos de Engenharia, LDA |  | Portugal
NOW Downhole Tools, Inc. |  | United States
NOW International LLC |  | United States
NOW Nova Scotia Holdings LLC |  | United States
NOW Oilfield Services II, LLC |  | United States

6

Name |  | State or Country of Incorporation
NOW Oilfield Services, LLC |  | United States
NQL (Illinois) Inc. |  | United States
NQL (US) Inc. |  | United States
NQL Energy Services US, Inc. |  | United States
NQL Holland B.V. |  | Netherlands
P&T Servicios Petroleros, C.A. |  | Venezuela
Pesaka Inspection Services SDN.BHD. |  | Malaysia
Pipex Composite Limited |  | United Kingdom
Pipex Drainage & Civil Products Limited |  | United Kingdom
Pipex Limited |  | United Kingdom
Pipex Project Services Limited |  | United Kingdom
Pipex PX (Scotland) Limited |  | United Kingdom
Pipex PX Limited |  | United Kingdom
Pipex Structural Composites Limited |  | United Kingdom
Pridecomex Holding, S. de R.L. de C.V. |  | Mexico
Pridecomex TA Industries, LLC |  | United States
Procon Engineering Ltd. |  | United Kingdom
Profab Engineering Pte. Ltd. |  | Singapore
Profab Services Pte Ltd |  | Singapore
PSX Corporation |  | United States
PT H-Tech Oilfield Equipment |  | Indonesia
PT National Oilwell Varco |  | Indonesia
PT PROFAB INDONESIA |  | Indonesia
Quality Tubing FSC |  | British, Virgin Islands
R&M C.V. |  | Netherlands
R&M Canada Cooperatief U.A. |  | Netherlands
R&M Canada Holding B.V. |  | Netherlands
R&M Energy Systems Australia Pty Ltd. |  | Australia
R&M Energy Systems de Argentina S.A. |  | Argentina
R&M Energy Systems de Venezuela, C.A. |  | Venezuela
R&M Environmental Strategies, Inc. |  | United States
R&M Singapore Holding LLC |  | United States
R&M UK Holding LLC |  | United States
ReedHycalog Angola, LLC |  | United States
ReedHycalog Cameroon, LLC |  | United States
ReedHycalog CIS, LLC |  | United States
ReedHycalog Coring Services International, Inc. |  | United States
ReedHycalog International Holding, LLC |  | United States
Reed-Hycalog Singapore |  | Singapore
ReedHycalog UK Ltd. |  | United Kingdom
ReedHycalog, L.P. |  | United States
ReedHycalog, LLC |  | United States
RHI Holding LLC |  | United States
RIO CO, S. de R.L. de C.V. |  | Mexico
Robannic Overseas Finance A.V.V. |  | Netherlands Antilles
Robbins & Myers (Suzhou) Process Equipment Company Limited |  | China
Robbins & Myers B.V. |  | Netherlands
Robbins & Myers Foundation |  | United States
Robbins & Myers GP LLC |  | United States
Robbins & Myers Holdings UK Limited |  | United Kingdom
Robbins & Myers Holdings, LLC |  | United States

7

Name |  | State or Country of Incorporation
Robbins & Myers Italia S.R.L. |  | Italy
Robbins & Myers N.V. |  | Netherlands Antilles
Robbins & Myers Private Limited |  | Singapore
Robbins & Myers, Inc. |  | United States
Rodic S.A. de C.V. |  | Mexico
Romaco S.a.r.l. |  | France
Saudi Arabia Concrete Products Limited (SACOP) |  | Saudi Arabia
Screen Manufacturing Company Unlimted |  | Trinidad and Tobago
Seabox AS |  | Norway
Servicios Tubulares TT, S.A. de C.V. |  | Mexico
Soil Recovery A/S |  | Denmark
Star Fiberglass Harbin Co., Ltd. |  | China
STAR Sudamtex Tubulares S.A. (Joint Venture) |  | Venezuela
STB H2O TUNISIE |  | Tunisia
Subseaflex Holding ApS |  | Denmark
T-3 Energy Preferred Industries Mexico, S. de R.L. de C.V. |  | Mexico
T-3 Energy Services Cayman Holdings, Ltd. |  | Cayman Islands
T-3 Energy Services Cayman, Ltd. |  | Cayman Islands
T-3 Energy Services India Private Limited |  | India
T-3 Energy Services International, Inc. |  | United States
T-3 Energy Services Mexico, S. de R.L. de C.V. |  | Mexico
T-3 Energy Services, LLC |  | United States
T-3 Investment Corporation IV |  | United States
T-3 Mexican Holdings, Inc. |  | United States
Techdrill Limited |  | United Kingdom
Telluride Insurance Limited |  | Bermuda
Tianjin Grant Prideco TPCO Oilfield Products Co., Ltd. |  | China
Tianjin Grant TPCO Drilling Tools Company Limited |  | China
Tube-Kote, Inc. |  | United States
Tubo-FGS, L.L.C. |  | United States
Tuboscope & Co. LLC |  | Oman
Tuboscope (Holding U.S.) LLC |  | United States
Tuboscope Brandt de Venezuela S.A. |  | Venezuela
Tuboscope Norge AS |  | Norway
Tuboscope Pipeline Services Inc. |  | United States
Tuboscope Services, L.L.C. |  | United States
Tuboscope Servicios de Bolivia S.R.L. |  | Bolivia
Tuboscope Vetco (Deutschland) GmbH |  | Germany
Tuboscope Vetco (France) SAS |  | France
Tuboscope Vetco (Osterreich) GmbH |  | Austria
Tuboscope Vetco Canada ULC |  | Canada
Tuboscope Vetco Capital Limited |  | United Kingdom
Tuboscope Vetco de Argentina S.A. |  | Argentina
Tuboscope Vetco Moscow CJSC |  | Russian Federation
Tucom Composites Polyester Sanayi Ticaret Ltd. |  | Turkey
TVI Holdings, L.L.C. |  | United States
Varco BJ BV |  | Netherlands
Varco Canada ULC |  | Canada
Varco CIS, LLC |  | Russian Federation
Varco do Brasil Ltda. |  | Brazil
Varco Holdings Canada ULC |  | Canada

8

Name |  | State or Country of Incorporation
Varco I/P, Inc. |  | United States
Varco Internacional do Brasil Equipamentos Ltda. |  | Brazil
Varco International de Venezuela, C.A. |  | Venezuela
Varco UK Acquisitions Limited |  | United Kingdom
Varco US Finance, Inc. |  | United States
Varco US Holdings LLC |  | United States
Varco, L.P. |  | United States
Vetco Coating GmbH |  | Germany
Vetco Enterprise GmbH |  | Switzerland
Vetco Pipeline Services, Inc. |  | United States
Vetco Saudi Arabia Ltd. |  | Saudi Arabia
Vetco Services Sendirian Berhad |  | Brunei Darussalam
Visible Assets, Inc. |  | United States
voestalpine Middle East Free Zone Establishment |  | United Arab Emirates
voestalpine Tubulars Corporation |  | United States
voestalpine Tubulars Gmbh |  | Austria
voestalpine Tubulars GmbH & Co KG |  | Austria
Woolley, Inc. |  | United States
WTG Holding US, Inc. |  | United States
XL Systems Antilles, N.V. |  | Netherlands
XL Systems Europe B.V. |  | Netherlands
XL Systems International, Inc. |  | United States
XL Systems, L.P. |  | United States

9