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EXHIBIT 21.1
 WEATHERFORD INTERNATIONAL LTD.
 LIST OF SUBSIDIARIES AND AFFILIATES
 NAME
    
    JURISDICTION315613 Alberta Ltd.
    
    Alberta708621 Alberta Ltd.
    
    Alberta721260 Alberta Ltd.
    
    Alberta1186443 Alberta Ltd.
    
    AlbertaA-1 Bit & Tool Co., B.V.
    
    NetherlandsAdvantage R&D, Inc.
    
    DelawareAim Oil Tools, Inc.
    
    TexasAir Drilling Services de Venezuela, C.A.
    
    VenezuelaAlgerian Oilfield Services S.p.A.
    
    AlgeriaAlpine Oil Services (Cyprus) Ltd.
    
    CyprusAlpine Oil Services Inc.
    
    North DakotaAlpine Oil Services International Ltd.
    
    BarbadosAmpscot Overseas Petroleum Equipment Co., LLC
    
    OmanAquatronic Limited
    
    U.K.Artex Bolivia S.A.
    
    BoliviaArtex de Venezuela C.A.
    
    VenezuelaArtex S.A.
    
    ArgentinaAstec Developments Limited
    
    U.K.B. D. Kendle Engineering Limited
    
    U.K.Bakke Oil Tools AS
    
    NorwayBakke Technology AS
    
    NorwayBasin Tools & Service, Inc.
    
    North DakotaBBL Aust. Pty Ltd
    
    AustraliaBBL Downhole Tools Limited
    
    U.K.BFG Investments Ltd.
    
    British Virgin IslandsBit & Tool A-1 S.r.l.
    
    ItalyBOSS Oilfield Services Limited
    
    U.K.Brit Bit Limited
    
    U.K.Calumet Petroleum Services, S.A.
    
    VenezuelaCardium International Limited
    
    Hong KongCardium Investments (Barbados) Limited
    
    BarbadosCardium Tool International Limited
    
    Barbados




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NAME
    
    JURISDICTIONCase Services, Inc.
    
    TexasClearwater International, L.L.C.
    
    DelawareColombia Petroleum Services Corp.
    
    DelawareColumbia Oilfield Supply, Inc.
    
    DelawareCommunication Rentals Limited
    
    U.K.Contra-Shear Separation Technologies Limited
    
    New ZealandCRC-Evans Automatic Welding, Inc.
    
    TexasCRC-Evans
Holland B.V.
    
    NetherlandsCRC-Evans Pipeline International (UK) Limited
    
    U.K.CRC-Evans Services Limited
    
    U.K.CTC-Empresa Tecnina e Comercial de Equipamentos Ltda.
    
    BrazilDailey de Venezuela, S.A.
    
    VenezuelaDailey IDS Limited
    
    U.K.Dailey International Sales Corporation
    
    DelawareDaquing Computalog Rainbow Geotechnical Development Corp. Ltd.
    
    ChinaDesert Asset Holdings, Inc.
    
    British Virgin IslandsDesert Rig Operations, Inc.
    
    Cayman IslandsDesign Engineering Limited
    
    U.K.Directional Wireline Engineering Services (Nigeria) Limited
    
    NigeriaDownhole Technology Limited
    
    U.K.DSK, Inc.
    
    Coloradoe2 Tech Limited
    
    U.K.Edinburgh Petroleum Equipment Limited
    
    U.K.Edinburgh Petroleum Services Americas Incorporated
    
    TexasEdinburgh Petroleum Services de Mexico S.A. de C.V.
    
    MexicoEdinburgh Petroleum Services de Venezuela, C.A.
    
    VenezuelaEdinburgh Petroleum Services Limited
    
    U.K.EMI-ElettroMagnetica Ispezioni Italia S.r.l.
    
    ItalyEnergy Ventures (Cyprus) Ltd.
    
    CyprusEnergy Ventures Far East Limited
    
    Hong KongEnterra (U.K.) Limited
    
    U.K.Enterra International Limited
    
    U.K.Enterra Oilfield Rentals Limited
    
    Hong KongEnterra Patco Oilfield Products, Inc.
    
    TexasEnterra Rental and Fishing Company
    
    DelawareeProduction Solutions U.K. Ltd.
    
    U.K.eProduction Solutions, Inc.
    
    TexasEPS Resources S.A. de C.V.
    
    MexicoEuropean Material Inspection (EMI) B.V.
    
    NetherlandsEVI (Barbados), SRL
    
    BarbadosEVI de Venezuela, S.A.
    
    VenezuelaEVI Weatherford, Inc.
    
    DelawareExpio Limited
    
    U.K.Fiberspar Linepipe Canada Ltd.
    
    Alberta




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NAME
    
    JURISDICTIONFiberspar Linepipe LLC
    
    DelawareFishing Services Limited
    
    U.K.Fleet Cementers, Inc.
    
    TexasGabas Omni Petroleum Services Ltd.
    
    Saudi ArabiaGeneral Pipe Service Bolivia S.R.L.
    
    BoliviaGlobal Air Drilling Services Ltd.
    
    AlbertaHelix Equipment Leasing Limited
    
    British Virgin IslandsHigh Pressure Integrity, Inc.
    
    LouisianaHouston Well Screen Asia Pte. Ltd.
    
    SingaporeHouston Well Screen Company
    
    TexasHuellas Oilfield Equipment & Services, Inc.
    
    DelawareHunter Road I GP, LLC
    
    TexasHunter Road I, LP
    
    TexasHunter Road II GP, LLC
    
    TexasHunter Road II, LP
    
    TexasHycal Energy Research Laboratories Ltd.
    
    AlbertaIndependent Integrated Services Limited
    
    U.K.International Nitrogen Services LLC
    
    DelawareInternational Petroleum Equipment Limited
    
    U.K.International Petroleum Equipment Norge A/S
    
    NorwayInternational Petroleum Services, Inc.
    
    DelawareJ.D. Investments Bonaire N.V.
    
    Netherlands AntillesJohnson Filtration Systems SAS
    
    FranceJohnson Screens (Australia) Pty Ltd
    
    AustraliaJohnson Screens (India) Limited
    
    IndiaJohnson Screens Japan Limited
    
    JapanJohnson Screens Ltda.
    
    BrazilJohnson Screens Venezuela, C.A.
    
    VenezuelaJohnson Screens, Inc.
    
    DelawareKeltic Oil Tools Limited
    
    U.K.Kenting Drilling APS
    
    DenmarkKey International Drilling Company Limited
    
    BermudaKobe International Ltd.
    
    BahamasKopp International Pipeline Services and Partners L.L.C.
    
    OmanLand Drilling Asset Holdings, Inc.
    
    British Virgin IslandsMcAllister Petroleum Services (Cyprus) Limited
    
    CyprusMcMurry-Macco (UK) Limited
    
    U.K.Mid-Europe Supply Limited
    
    U.K.Morrison McLean Associates Limited
    
    U.K.Multi Operational Service Tankers Inc. (Panama)
    
    PanamaOffshore Rentals Deutschland GmbH
    
    GermanyOffshore Rentals Limited
    
    U.K.Oil Field Rental Holdings Limited
    
    U.K.




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NAME
    
    JURISDICTIONOilfield Machine Shop and Inspection Services Company
    
    AlgeriaOilPatch Enterprises Internacional, S.A. de C.V.
    
    MexicoOilwell Production Services Limited
    
    U.K.Omni Laboratories de Venezuela, C.A.
    
    VenezuelaOmni Laboratories do Brasil Limitada
    
    BrazilOmni Laboratories of Canada, Inc.
    
    Nova ScotiaOmni Laboratories of Trinidad Limited
    
    Trinidad and TobagoOmni Laboratories, Inc.
    
    TexasOptoPlan A.S.
    
    NorwayOrwell Group De Venezuela C.A.
    
    VenezuelaOrwell Group Limited
    
    U.K.P.D. Drilling Holdings Inc.
    
    BarbadosP.D. Technical Services Inc.
    
    BarbadosPD Chicontepec, S. de R.L. de C.V.
    
    MexicoPD Global Employment Corporation
    
    AlbertaPD Holdings (USA) L.P.
    
    DelawarePD Holdings Mexicana S. de R.L. de C.V.
    
    MexicoPD International Leasing Inc.
    
    BarbadosPD International Services Inc.
    
    AlbertaPD International, LLC
    
    TexasPD Mexicana, S. de R.L. de C.V.
    
    MexicoPD Oilfield Services Mexicana, S. de R.L. de C.V.
    
    MexicoPD Technical Services Mexicana, S. de R.L. de C.V.
    
    MexicoPDI Oilfield Services (BVI) Ltd.
    
    British Virgin IslandsPetco Fishing & Rental Tools (UK) Limited
    
    U.K.Petroline Wellsystems Limited
    
    U.K.Pipetest Service Sp.Zo.o.
    
    PolandPolar Completions (U.S.) Inc.
    
    DelawarePowell Engineering Company Limited
    
    U.K.Powerflo Rentals (Dubai) LLC
    
    U.A.E.Powerflo Rentals Limited
    
    U.K.Powerflo Rentals Norge A/S
    
    NorwayPowerflo Systems Limited
    
    U.K.PowerGEN Rentals Limited
    
    U.K.Precision Capital Management Hungary Limited Liability Company
    
    HungaryPrecision do Brasil Servicos de Energia Ltda.
    
    BrazilPrecision Drilling (Cyprus) Limited
    
    CyprusPrecision Drilling (Egypt) LLC
    
    EgyptPrecision Drilling de Venezuela Caracas, C.A.
    
    VenezuelaPrecision Drilling de Venezuela, C.A.
    
    VenezuelaPrecision Drilling GP, Inc.
    
    DelawarePrecision Drilling Holdings, Inc.
    
    DelawarePrecision Drilling International (Australia) Pty. Ltd.
    
    Australia




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NAME
    
    JURISDICTIONPrecision Drilling International (BVI) Ltd.
    
    British Virgin IslandsPrecision Drilling International B.V.
    
    NetherlandsPrecision Drilling LP, Inc.
    
    DelawarePrecision Drilling Services (Australia) Pty. Ltd.
    
    AustraliaPrecision Drilling Services (Malaysia) Sdn. Bhd.
    
    MalaysiaPrecision Drilling Services (Netherlands) B.V.
    
    NetherlandsPrecision Drilling Services (Oman) & Co. LLC
    
    OmanPrecision Drilling Services (Thailand) Ltd.
    
    ThailandPrecision Drilling Services (UK) Ltd.
    
    U.K.Precision Drilling Services Algeria EURL
    
    AlgeriaPrecision Drilling Services Argentina S.A.
    
    ArgentinaPrecision Drilling Services M.E. W.L.L.
    
    United Arab EmiratesPrecision Drilling Services Saudi Arabia Ltd.
    
    Saudi ArabiaPrecision Drilling Technology Services Group (USA) Inc.
    
    DelawarePrecision Energy International Ltd.
    
    AlbertaPrecision Energy Services (Australia) Pty. Limited
    
    AustraliaPrecision Energy Services (Barbados) Ltd.
    
    BarbadosPrecision Energy Services (BVI) Ltd.
    
    British Virgin IslandsPrecision Energy Services (Cyprus) Limited
    
    CyprusPrecision Energy Services (New Zealand) Limited
    
    New ZealandPrecision Energy Services (Singapore) Pte. Ltd .
    
    SingaporePrecision Energy Services CIS
    
    RussiaPrecision Energy Services Colombia Ltd.
    
    AlbertaPrecision Energy Services Saudi Arabia Ltd.
    
    Saudi ArabiaPrecision Energy Services ULC
    
    AlbertaPrecision Energy Services, Inc.
    
    DelawarePrecision Holdings (UK) Limited
    
    U.K.Precision Middle East Holding Ltd.
    
    British Virgin IslandsPrecision Oilfield Services, LLP
    
    TexasPrecision Pacific Holding (BVI) Ltd.
    
    British Virgin IslandsPrecision USA Holdings, Inc.
    
    DelawareProject Management Services, S. de R.L. de C.V.
    
    MexicoPT Hawes Utama Indonesia
    
    IndonesiaPT Precision Energy Services (Indonesia)
    
    IndonesiaPT Weatherford Indonesia
    
    IndonesiaPT. Wira Insani
    
    IndonesiaPump Rentals (International) Limited
    
    U.K.Pyrosul International Inc.
    
    AlbertaQuality Commissioning Limited
    
    U.K.Quality Machining Services Limited
    
    U.K.R.S.T. Projects Limited
    
    U.K.Reeves Oilfield Services Ltd.
    
    U.K.Reeves Wireline Investments Limited
    
    U.K.




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NAME
    
    JURISDICTIONReeves Wireline Services Limited
    
    U.K.Reeves Wireline Services Limited u. Co. GmbH
    
    GermanyReeves Wireline Technologies Limited
    
    U.K.Richdear Holdings Limited
    
    CyprusSepta Energy Nigeria Limited
    
    NigeriaServicios Petroleros Equipat S.A.
    
    ArgentinaSeven Energy (Belgium) BVBA
    
    BelgiumSeven Energy (Canada) Inc.
    
    AlbertaSeven Energy (Hong Kong) Limited
    
    Hong KongSeven Energy Limited
    
    U.K.Seven Energy LLC
    
    DelawareSeven Energy Ltd.
    
    BermudaShengli-Highland Company Ltd.
    
    ChinaSigna Engineering Corp.
    
    TexasSmart Stabilizer Systems Limited
    
    U.K.Specialty Testing & Consulting Ltd.
    
    AlbertaStealth Oil & Gas, Inc.
    
    DelawareSubsurface Technology AS
    
    NorwaySunbreeze Limited
    
    CyprusTalleres de Precision del Chubut S.A.
    
    ArgentinaTank Rentals Limited
    
    U.K.Tech Line Oil Tools Inc.
    
    DelawareTechcorp Industries International, Inc.
    
    BarbadosTeco Maskinering AS
    
    NorwayThe Autonomous Well Company Limited
    
    U.K.TUBAFOR MAROC S.A.R.L.
    
    MoroccoTubeFuse Applications LLC
    
    DelawareTubeFuse Technologies Limited
    
    U.K.United Precision Drilling Company
    
    KuwaitValkyrie Commissioning Services, Inc.
    
    TexasValkyrie de Mexico S. de R.L. de C.V.
    
    MexicoValkyrie Services S. de R.L. de C.V.
    
    MexicoVan der Horst U.S.A., Inc.
    
    DelawareVisean Information Services Inc.
    
    TexasVisean Information Services Pty Ltd
    
    AustraliaW1 General Partner, Inc.
    
    DelawareW1 Receivables, L.P.
    
    TexasWeatherford
 Kabel s.r.o.
    
    SlovakiaWeatherford (B) Sdn. Bhd.
    
    BruneiWeatherford (Cyprus) Limited
    
    CyprusWeatherford (G.B.) LLP
    
    U.K.Weatherford (Malaysia) Sdn. Bhd.
    
    Malaysia Jt. VentureWeatherford (Novia Scotia) ULC
    
    Novia Scotia




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NAME
    
    JURISDICTIONWeatherford (Saudi Arabia) Ltd.
    
    Saudi Arabia Jt. VentureWeatherford Aarbakke AS
    
    NorwayWeatherford Abu Dhabi, Ltd.
    
    Cayman IslandsWeatherford Al-Rushaid Co. Ltd.
    
    Saudi Arabia Jt. VentureWeatherford Angola, Limitada
    
    AngolaWeatherford Angola Wellscreen Applications Ltd.
    
    British Virgin IslandsWeatherford Artificial Lift Systems Canada Ltd.
    
    AlbertaWeatherford Artificial Lift Systems, Inc.
    
    DelawareWeatherford Asia Pacific Pte. Ltd.
    
    SingaporeWeatherford Australia Holding Pty. Limited
    
    AustraliaWeatherford Australia Pty. Ltd.
    
    AustraliaWeatherford Bermuda Holdings Ltd.
    
    BermudaWeatherford Bin Hamoodah  L.L.C.
    
    Abu Dhabi Jt. VentureWeatherford Canada Ltd.
    
    AlbertaWeatherford Canada Partnership
    
    AlbertaWeatherford Colombia Ltd.
    
    British Virgin IslandsWeatherford Completion Systems (UK) Limited
    
    U.K.Weatherford Completion Systems de Venezuela, S.A.
    
    VenezuelaWeatherford de Mexico S.A. de C.V.
    
    MexicoWeatherford del Peru S.R.L.
    
    PeruWeatherford Deutsche Holding (Canada) ULC
    
    AlbertaWeatherford DIS Manufacturing (UK) Limited
    
    U.K.Weatherford Drilling and Production Services (India) Private Limited
    
    IndiaWeatherford East Europe Service GmbH
    
    GermanyWeatherford Ecuador S.A.
    
    EcuadorWeatherford Energy Services Gmbh
    
    GermanyWeatherford Equipment (Cyprus) Limited
    
    CyprusWeatherford Eurasia B.V.
    
    NetherlandsWeatherford Eurasia Limited
    
    U.K.Weatherford Financing (Cyprus) Limited
    
    CyprusWeatherford Financing (Luxembourg) S.a.r.l.
    
    LuxembourgWeatherford France SAS
    
    FranceWeatherford Global Products Limited
    
    CyprusWeatherford Holding (Gibraltar) Limited
    
    GibraltarWeatherford Holding (Ireland) Company
    
    IrelandWeatherford Holding (Luxembourg) S.a.r.l.
    
    LuxembourgWeatherford Holding B.V.
    
    NetherlandsWeatherford Holding GmbH
    
    GermanyWeatherford Holding Middle East Ltd.
    
    British Virgin IslandsWeatherford Holdings (BVI) Ltd.
    
    British Virgin IslandsWeatherford Holdings (Cyprus) Limited
    
    CyprusWeatherford Holdings (Singapore) Pte. Ltd.
    
    Singapore




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NAME
    
    JURISDICTIONWeatherford Holdings U.K. Ltd.
    
    U.K.Weatherford Hong Kong Holdings Limited
    
    Hong KongWeatherford IDS USA, Inc .
    
    DelawareWeatherford Industria e Comercio Ltda.
    
    BrazilWeatherford International de Argentina S.A.
    
    ArgentinaWeatherford International del Peru S.A.
    
    PeruWeatherford International, Inc.
    
    DelawareWeatherford Investment (Gibraltar) Limited
    
    GibraltarWeatherford Investment (Luxembourg) S.a.r.l.
    
    LuxembourgWeatherford Kazakhstan Limited Liability Partnership
    
    KazakhstanWeatherford Kopp GmbH
    
    GermanyWeatherford KSP Company Limited
    
    ThailandWeatherford Latin America, Inc.
    
    PanamaWeatherford Latin America, S.A.
    
    VenezuelaWeatherford Limited Partner, L.L.C.
    
    DelawareWeatherford Liquidity Management Hungary Limited Liability Company
    
    HungaryWeatherford Luxembourg S.a.r.l.
    
    LuxembourgWeatherford Management, Inc.
    
    DelawareWeatherford Mauritius Holdings Ltd.
    
    MauritiusWeatherford Mediterranea S.p.A.
    
    ItalyWeatherford ME Holdings Ltd.
    
    British Virgin IslandsWeatherford New Zealand Limited
    
    New ZealandWeatherford Nigeria Limited
    
    NigeriaWeatherford Norge A/S
    
    NorwayWeatherford North Atlantic Limited
    
    GibraltarWeatherford O.R. Limited
    
    U.K.Weatherford Oil Tool GesmbH
    
    AustriaWeatherford Oil Tool GmbH
    
    GermanyWeatherford Oil Tool Middle East Limited
    
    British Virgin IslandsWeatherford Oil Tool Nederland B.V.
    
    NetherlandsWeatherford Oilfield Equipment (Shanghai) Co., Ltd.
    
    ChinaWeatherford Oilfield Equipment (Tianjin) Limited
    
    ChinaWeatherford Overseas Products, Ltd.
    
    Cayman IslandsWeatherford Overseas Services, Ltd.
    
    Cayman IslandsWeatherford Product & Leasing (BVI) Limited
    
    British Virgin IslandsWeatherford Receivables, LLC
    
    DelawareWeatherford Services, Ltd.
    
    BermudaWeatherford Services, S.A.
    
    PanamaWeatherford Shanghai Investment Co.
    
    DelawareWeatherford Solutions Sdn. Bhd.
    
    MalaysiaWeatherford South America, Inc.
    
    PanamaWeatherford Technical Services Limited
    
    British Virgin IslandsWeatherford Trinidad Limited
    
    Trinidad




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NAME
    
    JURISDICTIONWeatherford Tubefuse B.V.
    
    NetherlandsWeatherford U.K. Limited
    
    U.K.Weatherford U.S. Holdings, L.L.C.
    
    DelawareWeatherford U.S. Investment, LLC
    
    DelawareWeatherford U.S., L.P.
    
    LouisianaWeatherford Unidades de Bombeio Ltda.
    
    BrazilWeatherford Well Screen Ireland Limited
    
    IrelandWeatherford/Lamb, Inc.
    
    DelawareWellCat Services International, LLC
    
    TexasWellserv Limited
    
    U.K.WESP
    
    AlgeriaWest Coast International Oilfield Rentals, B.V.
    
    NetherlandsWEUS Holding, Inc.
    
    DelawareWI Products & Equipment, Inc.
    
    Cayman IslandsWII Rental Company
    
    DelawareWUS Holding, L.L.C.
    
    DelawareZimec Ltda.
    
    BrazilZonebrook Limited
    
    CyprusZonecrest Limited
    
    CyprusZuidzuidoost Investments B.V.
    
    Netherlands