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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.
    
    AlbertaA-1 Bit & Tool Co., B.V.
    
    NetherlandsAdvanced Syngas Technologies
    
    AlbertaAdvantage 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
    
    OmanAO Kompaniya Geofizicheskiye Issledovaniya Skvazhin
    
    KazakhstanApplied Petroleum Technology A.S.
    
    NorwayApplied Petroleum Technology (UK) Ltd.
    
    U.K.Aquatic Company
    
    RussiaAquatronic Limited
    
    U.K.Artex Bolivia S.A.
    
    BoliviaArtex de Venezuela C.A.
    
    VenezuelaArtex S.A.
    
    ArgentinaAstec Developments Limited
    
    U.K.Auslog Pty.Ltd.
    
    AustraliaAustralian Logging Services, Ltd.
    
    AustraliaAustralian Technical Solutions Pty, Ltd.
    
    AustraliaB. D. Kendle Engineering Limited
    
    U.K.Bakke Oil Tools AS
    
    NorwayBakke Technology AS
    
    NorwayBBL Aust. Pty Ltd
    
    AustraliaBBL Downhole Tools Limited
    
    U.K.BFG Investments Ltd.
    
    British Virgin IslandsBrit Bit Limited
    
    U.K.




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NAME

    JURISDICTIONCalumet Petroleum Services, S.A.
    
    VenezuelaCardium International Limited
    
    Hong KongCardium Investments (Barbados) Limited
    
    BarbadosCardium Tool International Limited
    
    BarbadosCase Services, Inc.
    
    TexasClearwater International, L.L.C.
    
    DelawareColombia Petroleum Services Corp.
    
    DelawareColumbia Oilfield Supply, Inc.
    
    DelawareCommunication Rentals Limited
    
    U.K.Compania Construction Perforadora y de Estudios GEOS, S.A. de C.V.
    
    MexicoContra-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
    
    NigeriaDongying Shengli-Highland Company Ltd.
    
    ChinaDownhole Technology Limited
    
    U.K.Drilling Research & Development Corporation
    
    TexasDSK, 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.
    
    ItalyEmirates Link Reslab (El Reslab LLC) Limited Liability Company
    
    U.A.E.Energy 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
    
    Delaware




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NAME

    JURISDICTIONeProduction 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.Fishing Services Limited
    
    U.K.Fleet Cementers, Inc.
    
    TexasGabas Omni Petroleum Services Ltd.
    
    Saudi ArabiaGem-Trim, L.L.C.
    
    LouisianaGeneral 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
    
    TexasHunter Road Medical Plaza, L.P.
    
    TexasHunter Road Medical Plaza Management, L.L.C.
    
    TexasHycal Energy Research Laboratories Ltd.
    
    AlbertaICR Poliuretanos y Gomas S.A.
    
    ChileIndependent 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, Inc.
    
    DelawareKeltic Oil Tools Limited
    
    U.K.Kenting Drilling APS
    
    DenmarkKey International Drilling Company Limited
    
    BermudaKobe International Ltd.
    
    Bahamas




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NAME

    JURISDICTIONKopp International Pipeline Services and Partners L.L.C.
    
    OmanLand Drilling Asset Holdings, Inc.
    
    British Virgin IslandsLinkbird Limited
    
    CyprusMcAllister 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.Oilfield Machine Shop and Inspection Services Company
    
    AlgeriaOilPatch Enterprises Internacional, S.A. de C.V.
    
    MexicoOilwell Production Services Limited
    
    U.K.Olanderano Commercial, Servicing and Liquidity Management Limited Liability Company
    
    HungaryOmni 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.
    
    TexasOOO Techinformservice
    
    RussiaOrwell 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.
    
    MexicoPetco 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
    
    Norway




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NAME

    JURISDICTIONPowerflo Systems Limited
    
    U.K.PowerGEN Rentals Limited
    
    U.K.Precision 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.
    
    AustraliaPrecision 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.
    
    DelawarePremiere Business Solutions Limited
    
    SeychellesProject Management Services, S. de R.L. de C.V.
    
    MexicoPT Hawes Utama Indonesia
    
    Indonesia




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NAME
    JURISDICTIONPT 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.Reeves Wireline Services Limited
    
    U.K.Reeves Wireline Services Limited u. Co. GmbH
    
    GermanyReeves Wireline Technologies Limited
    
    U.K.ResLab Integration AS
    
    NorwayResLab Malata Ltd.
    
    MaltaResLab North Africa Ltd.
    
    MaltaResLab Reservoir Laboratories A.S.
    
    NorwayResLab Reservoir Laboratories & Company LLC
    
    OmanResLab Trinidad & Tobago S.A. de C.V.
    
    TrinidadResLab UK Ltd.
    
    United KingdomRichdear Holdings Limited
    
    CyprusRig Transport International (BVI) Ltd.
    
    British Virgin IslandsScreenex Manufacturing (Proprietary) Limited
    
    South AfricaServicios Petroleros Equipat S.A.
    
    ArgentinaSETAC S.A.
    
    ChileSeven Energy (Belgium) BVBA
    
    BelgiumSeven Energy (Hong Kong) Limited
    
    Hong KongSeven Energy LLC
    
    DelawareSicom AS
    
    NorwaySigna Engineering Corp.
    
    TexasSmart Stabilizer Systems Limited
    
    U.K.Solintec Services de Petroleo Ltda.
    
    BrazilSpecialty Testing & Consulting Ltd.
    
    AlbertaStealth Oil & Gas, Inc.
    
    DelawareSubsurface Technology AS
    
    NorwaySunbreeze Limited
    
    CyprusSunita Hydrocolloids Private Ltd.
    
    IndiaTalleres de Precision del Chubut S.A.
    
    ArgentinaTank Rentals Limited
    
    U.K.Tech Line Oil Tools Inc.
    
    DelawareTechcorp Industries International, Inc.
    
    BarbadosTeco Maskinering AS
    
    NorwayTeress Properties Limited Liability Company
    
    Azerbaijan




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NAME

JURISDICTIONTUBAFOR 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
    
    AustraliaWarrior Well Services, Inc.
    
    IllinoisWeatherford (B) Sdn. Bhd.
    
    BruneiWeatherford (Cyprus) Limited
    
    CyprusWeatherford (G.B.) LLP
    
    U.K.Weatherford (Malaysia) Sdn. Bhd.
    
    MalaysiaWeatherford (Novia Scotia) ULC
    
    Novia ScotiaWeatherford (Saudi Arabia) Ltd.
    
    Saudi ArabiaWeatherford (Sichuan) Petrochemical Equipment Co. Ltd.
    
    ChinaWeatherford Aarbakke AS
    
    NorwayWeatherford Abu Dhabi, Ltd.
    
    Cayman IslandsWeatherford Al-Rushaid Co. Ltd.
    
    Saudi ArabiaWeatherford Angola, Limitada
    
    AngolaWeatherford Angola Services (BVI) Ltd.
    
    British Virgin IslandsWeatherford 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 DhabiWeatherford Canada Ltd.
    
    AlbertaWeatherford Canada Partnership
    
    AlbertaWeatherford Chisholm Trail Holding, LLC
    
    TexasWeatherford 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 International (Australia) Pty. Ltd.
    
    AustraliaWeatherford Drilling International (BVI) Ltd.
    
    British Virgin Islands




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NAME

    JURISDICTIONWeatherford Drilling and Production Services (India) Private Limited
    
    IndiaWeatherford East Europe Service GmbH
    
    GermanyWeatherford Ecuador S.A.
    
    EcuadorWeatherford Energy Services Hungary Limited Liability Company
    
    HungaryWeatherford 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.
    
    SingaporeWeatherford 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 Eastern Europe SRL
    
    RomaniaWeatherford International, Inc.
    
    DelawareWeatherford Investment (Gibraltar) Limited
    
    GibraltarWeatherford Investment (Luxembourg) S.a.r.l.
    
    LuxembourgWeatherford Investments Holding B.V.
    
    NetherlandsWeatherford 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 LLC
    
    RussiaWeatherford Luxembourg S.a.r.l.
    
    LuxembourgWeatherford Management, Inc.
    
    DelawareWeatherford Mauritius Holdings Ltd.
    
    Mauritius




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NAME

    JURISDICTIONWeatherford 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 Pipeline Services Espana, S.L.
    
    SpainWeatherford Product & Leasing (BVI) Limited
    
    British Virgin IslandsWeatherford Services, Ltd.
    
    BermudaWeatherford Services, S.A.
    
    PanamaWeatherford Solutions Sdn. Bhd.
    
    MalaysiaWeatherford South America, Inc.
    
    PanamaWeatherford Syngas Investments Ltd.
    
    AlbertaWeatherford Technical Services Limited
    
    British Virgin IslandsWeatherford Trinidad Limited
    
    TrinidadWeatherford 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.
    
    DelawareWFT Technologies, LLC
    
    RussiaWI Products & Equipment, Inc.
    
    Cayman IslandsWII Rental Company
    
    DelawareWUS Holding, L.L.C.
    
    DelawareZAO Aquatic-Samara
    
    Russia




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NAME

    JURISDICTIONZAO Neftegazkomplectservice
    
    RussiaZibo Hongyang Weatherford Oilfield Equipment Co. Ltd.
    
    ChinaZimec Ltda.
    
    BrazilZonebrook Limited
    
    CyprusZonecrest Limited
    
    CyprusZuidzuidoost Investments B.V.
    
    Netherlands