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Rotary dill ntsis IADC216 7 7/8 nti (200mm)
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Teb cov khoom siv IADC216 10 5/8 nti (269mm)
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Yuav cov khoom drilling IADC216 17.5 "(444.5mm)
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Peb lub cones khoom Hoobkas IADC217 3 7/8 nti (98mm)
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Tricone khoom IADC217 4.5 nti (114mm) rau pob zeb tob tob drilling
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API kaw cov menyuam lub khob me me rau drilling IADC217 5 7/8 nti (149.2mm)
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Teb Drilling khoom IADC217 6 nti (152mm)
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API milled hniav peb cones khoom IADC217 7.5 nti (190mm) hauv Tshuag
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API roj hlau hniav khoom IADC217 8.5 nti (215mm) rau pob zeb drilling
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API khoom muag IADC217 8 3/4 nti (222.2mm)
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IADC217 11 5/8 nti (295.3mm) rau cov pob zeb tawv
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API Mill hniav khoom IADC217 12 1/4 nti (311mm) rau qhov zoo drilling