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Exhibit 21.1
Core Laboratories, N.V.
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Subsidiary Listing
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Name Legal Seat
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AGI de Venezuela, C.A. Caracas, Venezuela
AGI Mexicana, S.A. de C.V. Mexico City, Mexico
Beukenwoude, B.V. Amsterdam, Netherlands
Coherence Technology (U.K.) Ltd. Edinburgh, United Kingdom
Coherence Technology Company, Inc. Colorado, United States
Core Export Sales, Inc. Bridgetown, Barbados
Core Lab de Mexico, S.A. de C.V. Mexico City, Mexico
Core Lab Operations S.A. de C.V. Mexico
Core Lab Services S.A. de C.V. Mexico
Core Laboratories Resources, N.V. Curacao, Netherlands Antilles
Core Laboratories International
Licensing N.V. Curacao, Netherlands Antilles
Core Laboratories International
Trading N.V. Curacao, Netherlands Antilles
Core Laboratories (H.K.) Limited Hong Kong
Core Laboratories (U.K.) Limited London, United Kingdom
Core Laboratories Angola Ltd. Angola
Core Laboratories Australia PTY LTD Perth, Australia
Core Laboratories (Barbados) Limited Barbados
Core Laboratories Canada Limited Alberta, Canada
Core Laboratories El Salvador
S.A. de C.V. El Salvador
Core Laboratories Global N.V. Curacao, Netherlands Antilles
Core Laboratories Holding, Inc. United States
Core Laboratories Holding, L.L.C. Delaware
Core Laboratories, L.L.C. Delaware
Core Laboratories, L.P. Delaware
Core Laboratories International B.V. Amsterdam, The Netherlands
Core Laboratories I.P., Inc. United States
Core Laboratories Mexico Holding B.V. Netherlands
Core Laboratories Middle East
Services B.V. Netherlands
Core Laboratories Netherlands B.V. Amsterdam, The Netherlands
Core Laboratories Panama, S.A. Panama City, Panama
Core Laboratories PTE LTD Singapore
Core Laboratories Sales N.V. Curacao, Netherlands Antilles
Core Laboratories SDN BHD Kuala Lumpur, Malaysia
Core Laboratories Venezuela S.A. Caracas, Venezuela
Core Petrophysics, Inc. Texas, United States
Core Petrophysics de Venezuela, C.A. Venezuela
Corelab Brasil Ltda Brasil
Corelab Nigeria Limited Lagos, Nigeria
CTC Pulsonic Nigeria Limited Lagos, Nigeria
E.W. Saybolt & Co. (Cayman) Ltd. Cayman Islands
E.W. Saybolt & Co. N.V. St. Eustatius
E.W. Saybolt & Co. S.A. Panama City, Panama
FE & FEFH Holdings, Inc. Canada
Integra Geoservices, Inc. Alberta, Canada
Intraventures, Inc. Canada
Jaex de Mexico, S.A. de C.V. Tabasco, Mexico
Magna International Services, C.A. Venezuela
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Organic Technology, L.P. Delaware
OOO "Lab Technics" Russia
Owen Aruba N.V. Aruba, Netherlands Antilles
Owen Canada Ltd. Alberta, Canada
Owen Compliance Services, Inc. Texas, United States
Owen de Mexico S.A. de C.V. Mexico
Owen Oil Tools (U.K.) Ltd. Croydon, United Kingdom
Owen Oil Tools de Venezuela, C.A. Anaco, Anzoategui, Venezuela
Owen Oil Tools, L.P. Delaware
PENCOR de Mexico S.A. de C.V. Mexico
PENCOR de Venezuela, C.A. Venezuela
PENCOR International Ltd. Jersey Channel Islands
PENCOR Ltd. United Kingdom
Petrak (Maghreb) S.A. Morocco
Petrak Azerbaijan Ltd. Baku, Azerbaijan
Petrak Baltija Ltd. Ventpils, Latvia
Petrak Batumi Ltd. Batumi, Georgia
Petrak CIS Ltd. Novorossiysk, Russia
Petrak Ltd. Aktau City, Kazakhstan
Petroleum Analysts ZAO Moscow, Russia Federation
Promore Engineering Inc. Canada
Pro Technics de Mexico, S.A. de C.V. Mexico
Pro Technics International, Inc. Texas, United States
Production Enhancement Corporation Louisiana, United States
Production Services de Venezuela, C.A. Venezuela
PT Corelab Indonesia Jakarta, Indonesia
PT Saybolt Indonesia Jakarta, Indonesia
Quantoil Ltd. United Kingdom
Reservoirs, L.P. Delaware
Saybolt - NIICPV ZAO Moscow, Russia Federation
Saybolt (Portugal) Inspeccao
de Productos Petroliferos, Lda. Lisbon, Portugal
Saybolt (Singapore) PTE LTD Singapore
Saybolt (Tianjin) Meteorology &
Instrumentation Company China
Saybolt Analyt Holding B.V. Vlaardingen, The Netherlands
Saybolt Analyt LTD ZAO Moscow, Russia Federation
Saybolt Armenia Yerevan, Armenia
Saybolt Aruba N.V. Aruba, Netherlands Antilles
Saybolt Azerbaijan, Ltd. Azerbaijan
Saybolt Bahamas Ltd. Freeport, Bahamas
Saybolt Baltija, Ltd. Klaipeda, Lithuania
Saybolt Bashkortostan Bashkortostan, Russian Federation
Saybolt Belgium Belgium
Saybolt Bonaire N.V. Bonaire, Netherlands Antilles
Saybolt Bulgaria Ltd Bulgaria
Saybolt Caribbean N.V. Aruba
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Saybolt Colombia Ltda. Barranquilla, Colombia
Saybolt Curacao N.V. Curacao, Netherlands Antilles
Saybolt Danmark A/S Copenhagen, Denmark
Saybolt de Costa Rica, S.A. San Jose, Costa Rica
Saybolt de Ecuador S.A. Ecuador
Saybolt de Mexico S.A. de C.V. Coatzacoalcos, Mexico
Saybolt Eastern Hemisphere B.V. Vlaardingen, The Netherlands
Saybolt Espana S.A. Madrid, Spain
Saybolt Estonia Ltd. Tallin, Estonia
Saybolt Evrasia ZAO Moscow, Russia Federation
Saybolt Finland Oy Hamina, Finland
Saybolt France S.A. Port-Le-Bouc, France
Saybolt Geneva S.R.L. Siracusa, Italy
Saybolt Greece, Ltd. Athens, Greece
Saybolt Holding B.V. Vlaardingen, The Netherlands
Saybolt, L.P. Delaware
Saybolt International B.V. Vlaardingen, The Netherlands
Saybolt Iran B.V. Vlaardingen, The Netherlands
Saybolt Italia S.R.L. Siracusa, Italy
Saybolt Kazakhstan B.V. Vlaardingen, The Netherlands
Saybolt Latin America B.V. Vlaardingen, The Netherlands
Saybolt Latvia Ventspils, Latvia
Saybolt (M) SDN BHD Kuala Lumpur, Malaysia
Saybolt Malta Ltd. Kalafran, Malta
Saybolt Meteorology &
Instrumentation B.V. Vlaardingen, The Netherlands
Saybolt Mongol HHK Mongolia
Saybolt Nederland B.V. Vlaardingen, The Netherlands
Saybolt North America B.V. Vlaardingen, The Netherlands
Saybolt Saudi Arabia Co., Ltd. Saudi Arabia
Saybolt Services Ltd.
formerly Petrak Services Ltd. London, United Kingdom
Saybolt South Africa PTY LTD Cape Town, South Africa
Saybolt Sverige AB Gothenburg, Sweden
Saybolt Test OOO Bashkortostan, Russian Federation
Saybolt Thailand Ltd. Bangkok, Thailand
Saybolt Trinidad & Tobago Ltd. Marabella, Trinidad
Saybolt Turkmenistan Ltd.
formerly Petrak Turkmenistan Ltd. Turkmenbashi, Turkmenistan
Saybolt United Kingdom Ltd. Purfleet, United Kingdom
Saybolt van Duyn GmbH Essen, Germany
Saybolt West Indies N.V. Kingston, Jamaica
Saybolt Ukraine Odessa, Ukraine
Scott Pickford Group Limited Croydon, United Kingdom
Scott Pickford Limited Croydon, United Kingdom
Southwest Promore, Inc. United States
SP TOO Saybolt Kazakhstan Kazakhstan
Stim Lab, Inc. Oklahoma, United States
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Stim-Lab (U.K.) Limited Edinburgh, United Kingdom
Stim-Lab CoreSystems Limited Edinburgh, United Kingdom
The Petrak Group S.A. Zug, Switzerland
TomoSeis Corporation Texas, United States
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