석유 및 가스 시추 연구

주요 선수 : ADES International Holding PLC, Arabian Drilling Company, Shelf Drilling Holdings, Ltd., ARO 드릴링, Saipem SpA

주요 선수 : Schlumberger Ltd, Weatherford International PLC, Halliburton Company, Baker Hughes Company, China Oilfield Services Limited

주요 선수 : Schlumberger PLC, Weatherford International Drilling PLC, Baker Hughes Co, Halliburton Company, Nabors Industries Ltd

주요 선수 : Arabian Drilling Company(ADC), Schlumberger Limited, Baker Hughes Company, Weatherford International PLC, Transocean Ltd., Saudi Aramco Oil Co.

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

주요 선수 : Baker Hughes Company, Schlumberger Limited, Sandvik AB, National Oilwell Varco

주요 선수 : Schlumberger Limited, Baker Hughes Company, Chevron Corporation, ConocoPhillips, Halliburton Company

주요 선수 : Schlumberger Limited, Baker Hughes Company, National-Oilwell Varco Inc, Weatherford International Plc, Halliburton Company

주요 선수 : Halliburton Inc, Schlumberger Limited, National Oilwell Varco, Nabors Industries Ltd, Weatherford International PLC

주요 선수 : Workstrings International , Hunting PLC , National Oilwell Varco , International Drilling Services Ltd.(IDS) , American Oilfield Tools, Inc.

주요 선수 : Hilong Holding Ltd, Hunting PLC, Trubnaya Metallurgicheskaya Kmpny PAO, Tenaris SA, National-Oilwell Varco, Inc.

주요 선수 : Hilong Holding Ltd, Hunting PLC, TMK Group, Tenaris SA, National-Oilwell Varco, Inc.

주요 선수 : Halliburton Company, Honeywell International Inc., National-Oilwell Varco, Inc., Pason Systems Inc., Schlumberger Ltd.

주요 선수 : Transocean Ltd, Seadrill Ltd, Diamond Offshore Drilling Inc., China Oilfield Services Limited, Saipem SpA