中東およびアフリカのドリルカラートップ企業
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Hunting PLC
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National Oilwell Varco Inc. (NOV)
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Schlumberger Limited
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China Vigor Drilling Oil Tools and Equipment Co. Ltd
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International Drilling Services Ltd (IDS)
*免責事項:上位企業は順不同
Hunting PLC
National Oilwell Varco Inc. (NOV)
Schlumberger Limited
China Vigor Drilling Oil Tools and Equipment Co. Ltd
International Drilling Services Ltd (IDS)
*免責事項:上位企業は順不同