ドリルビットトップ企業
-
Schlumberger Limited
-
Baker Hughes Company
-
National-Oilwell Varco Inc
-
Weatherford International Plc
-
Halliburton Company
*免責事項:上位企業は順不同
Schlumberger Limited
Baker Hughes Company
National-Oilwell Varco Inc
Weatherford International Plc
Halliburton Company
*免責事項:上位企業は順不同