China Drilling and Completion Research

Major Players: Schlumberger Ltd , Halliburton Company , Baker Hughes Company , Weatherford International plc. , China Oilfield Services Ltd.

Major Players: Schlumberger Ltd, Weatherford International PLC, Halliburton Company, Baker Hughes Company, China Oilfield Services Limited

Major Players: Schlumberger Ltd., Halliburton Company, Baker Hughes Company, Weatherford International plc, China Oilfield Services Ltd.

Major Players: Schlumberger Ltd , Halliburton Company , Baker Hughes Company , Weatherford International plc. , China Oilfield Services Ltd

Major Players: Baker Hughes Company , Haliburton Company , Schlumberger Limited , Transocean Limited , Saipem SpA

Major Players: Baker Hughes Company, Schlumberger Limited, Weatherford International plc, NOV Inc., Halliburton Company

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

Major Players: Samsung Heavy Industries Co. Ltd, Sembcorp Marine Ltd, Seadrill Ltd, Keppel Corporation Limited, Transocean Ltd

Major Players: Schlumberger Limited, Halliburton Company, Weatherford International Plc, , Baker Hughes Company, GN Solids Control

Major Players: Schlumberger Limited, Halliburton Company, National Oilwell Varco Inc., Weatherford International PLC, Baker Hughes, a GE company