카타르 업스트림 연구

주요 선수 : Qatargas Operating Company Limited, Qatar Petroleum, ConocoPhillips Company, Exxon Mobil Corporation, Total SA

주요 선수 : Halliburton Company, Weatherford International PLC, Baker Hughes Co., 중동 유전 서비스, Schlumberger Limited

주요 선수 : Petroleum Development Oman, Abu Dhabi National Oil Company(ADNOC), BP Plc, Dubai Petroleum Co., SGS SA

주요 선수 : Schlumberger Ltd., Halliburton Company, Baker Hughes Company, Weatherford International plc, National-Oilwell Varco, Inc.

주요 선수 : Baker Hughes Company, Schlumberger Limited, National Oilwell Varco Inc., Shandong Kerui Holding Group Co. Ltd, Weatherford International Plc.

주요 선수 : Baker Hughes Company, Haliburton Company, Schlumberger Limited, Transocean Limited, Saipem SpA

주요 선수 : DOF Subsea AS, Oceaneering International, Inc., Fugro NV, Saipem SpA, Subsea7 SA

주요 선수 : Schlumberger Limited, Saipem SpA, Nabors Industries Ltd., Weatherford International PLC, Helmerich & Payne, Inc.

주요 선수 : Schlumberger Limited, Halliburton Company, Core Laboratories NV, Thermo Fisher Scientific Inc., Intertek Group plc