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Tus nqi qis IADC217 14 3/4 nti (374mm) rau pob zeb tawv
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Lag luam wholesale drilling khoom IADC217 17.5 nti (444.5mm)
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Tricone laum khoom IADC114 15.5 nti (394mm) hauv Tshuag
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Hlau hniav tricone ntsis Hoobkas IADC114 17.5 nti (444.5mm)
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Cement plug drilling khoom IADC127 4 3/4 nti (120mm)
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API customized laum khoom IADC126 5 1/4 nti (133mm) rau pob zeb tawv
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Mill hniav khoom rau qhov zoo drilling IADC215 17.5 nti (444.5mm)
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API Tricone laum khoom nqe IADC216 4 5/8 nti (118mm)
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Sib sib zog nqus tricone khoom IADC216 6 nti (152mm)
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API Drilling Rig khoom IADC216 5 3/4 nti (146mm)
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API Triocne Drilling IADC125 17 1/2 nti (444.5mm)
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API zoo drilling taub hau IADC126 7 1/2 nti (190.5mm)