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API tricone drilling IADC216 7 5/8 nti (194 hli) rau roj rig
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Peb lub khob hliav qab lub Hoobkas IADC217 3 7/8 nti (98mm)
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Cov ntsis laum tig IADC217 6 nti (152 hli)
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API milled hniav peb lub khob hliav qab IADC217 7.5 nti (190 hli) hauv Tshuag
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API roj hlau hniav ntsis IADC217 8.5 nti (215 hli) rau kev khawb pob zeb
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Cov ntsis khawb qhov dej tob IADC217 11 5/8 nti (295.3 hli) rau pob zeb tawv
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API Mill hniav ntsis IADC217 12 1/4 nti (311 hli) rau kev khawb qhov dej
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Cov khoom siv drilling pheej yig IADC217 14 3/4 nti (374mm) rau pob zeb tawv