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GRANT PRIDECO LP
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TUBE ALLOY CAPITAL CORP
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Dreco International Finance (Barbados) Ltd
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Reed Hycalog Investment Pte. Ltd
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Brandt Servicios Petroleros SA
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Hydralift AS
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Smart Screen Systems Inc
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Tuboscope Vetco de Argentina SA
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NBJ Manufacturas Petroleras (Bolivia) SA
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Reed Hycalog UK Holdings LLP
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Corlac Equipment Corp
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Inspecciones y Pruebas No Destructivs S.A. de C.V.
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National Oilwell Norway AS
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Texas Oil Tools Inc
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Versatech International Ltd
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Varco UK Acquisitions ltd
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INTELLIPIPE INC
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NOV Services Ltd
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Mono Group Pension Trustees ltd
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GRANT PRIDECO USA LLC
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ReedHycalog Kazakhstan LLC
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Tuboscope Brandt de Colombia
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Andergauge Ltd
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ReedHycalog del Ecuador SA
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Voest Alpine Tubulars Gmbh
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Elmar Services Pty Ltd
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Pesaka Inspection Services SDN.BHD.
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Tuboscope Mexico S.A. de C.V.
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Grant Prideco Equipmentos para Petrolea Ltda
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Black Max Argentina SA
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National Oilwell de Mexico S.A. de C.V.
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National Oilwell-Netherlands B.V.
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Mid South Machine Inc
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National Oilwell DHT, LP
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Varco International do Brasil Equipamentos e Servicos Ltda
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TA INDUSTRIES INC
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XL SYSTEMS INTERNATIONAL INC
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Pridecomex Holding S.A. de C.V.
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NOV Sub, Inc
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National Oilwell Varco Equipment Trading (Shanghai) Co Ltd
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Hydralift France SAS
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STAR Sudamtex Tubulares SA
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Tuboscope Vetco Moscow
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NQL (Illinois) Inc
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Dreco DHT Inc
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JV FIDMASH
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TS&M Supply
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V.O.F. National Oilwell Varco
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National Oilwell Services de Mexico S.A. de C.V.
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Vetco Enterprise AG
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Vetco Services Sendirian Berhad
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Mono Pumps New Zealand ltd
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ReedHycalog LP
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Anderson Group Ltd
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CJSC Novmash
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National Oilwell Varco Hjelset AS
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Voest Alpine Middle East Free Zone Establishment
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Tuboscope Vetco (France) SA
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Andergauge USA Inc
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ReedHycalog Europe B.V.
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Advanced Wirecloth, Inc
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Fiber Glass Systems (Harbin) Co., Ltd.
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Pretempca Servicios de Mexico, S.A. de C.V.
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Tuboscope Pipeline Services Canada Inc
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Amclyde UK ltd
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Grant Prideco Jersey Ltd
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Bowen Downhole, Inc
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Harbin Star Fiberglass Ltd
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National Oilwell Canada Ltd
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Screen Manufacturing Co Ltd
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Grant Prideco Mauritius Ltd
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Sakhalin Outfitters LLC
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LLTT Ltd
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Varco Norge AS
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Tuboscope Holdings ltd
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Intelliserv International Holding Ltd
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M.S.D. de Venezuela, C.A.
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Varco US Finance Inc
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Intelliserv Inc
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NOV Brandt Oilfield Services Middle East LLC
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Tulsa Equipment Manufacturing Company
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NQL Energy Services (Barbados) Ltd
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Dreco Energy Services Ltd
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Tube Kote Inc
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Grant Prideco (Jiangsu) Drilling Products Co Ltd
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ReedHycalog Angola LLC
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National Oilwell Sogne AS
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Vetco Pipeline Services, Inc
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TAI Holding Inc
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Welch Power Source LLC
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NOV Sara India Private ltd
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National Oilwell Varco (Thailand) Ltd
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ReedHycalog Oilfield Services LLC
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National Oilwell Varco Pte Ltd
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NQL Energy Services US Inc
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Fiber Glass Systems, L.P.
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NOV DH de Mexico S.A. de C.V.
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PT National Oilwell Varco
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Dreco Europe ltd
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Reed Hycalog de Mexico S de R.L. de C.V.
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