The following companies are subsidiares of Schlumberger: Asset Development & Improvement Ltd., CJSC Tyumenpromgeofizika, Cameron, Cameron International Corporation, Cameron Lux I SARL, Convergent Group, Diamould, Dowell Schlumberger Corporation, Eastern Echo Holding, Eurasia Drilling, Extreme Engineering, Fluid Inclusion Technologies, GEDCO, GeoKnowledge AS, Geoservices, Geosystem Srl, Geothermex, Gushor, IES Integrated Exploration Systems, IGEOSS, InnerLogix, Insensys Oil & Gas, KBB Underground Technologies GmbH, M-I SWACO, Merak Projects, Meta Downhole, Nexus Geosciences, Novatek, Odegaard, Omron Oilfield and Marine, OneSubsea SARL, Operational Services, Panther Software, Peak Well Systems, PetroAlliance Services, Reslink, Rock Deformation Research, SPT Group, Saltel Industries, Saxon Energy Services, Schlumberger B.V., Schlumberger Canada Limited, Schlumberger Holdings Corporation, Schlumberger Holdings II Limited, Schlumberger Logelco Inc., Schlumberger Middle East SA., Schlumberger Norge AS, Schlumberger Offshore Services Limited, Schlumberger Oilfield Eastern Ltd., Schlumberger Oilfield Holdings Limited, Schlumberger Oilfield UK Plc, Schlumberger Overseas SA, Schlumberger Plc, Schlumberger SA, Schlumberger Seaco Inc., Schlumberger Technology Corporation, Schlumberger UK Limited, Sema Plc, Sensa, Services Petroliers Schlumberger, Shores Lift Solutions, Smith International, Smith International Inc., Staag Imaging, T&T Engineering Services, Techsia, TerraTek, ThruBit, V.i.P.S, VoxelVision, and Water Management Consultants.
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