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API Rotari rholer dril did IADC517 4.5 modfedd (114mm) mewn stoc
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Did botwm IADC517 118mm ar gyfer drilio creigiau ffynnon geothermol.
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Ffatri API o ddarnau rholio cylchdro IADC517 4 3/4″ (120mm)
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Darnau wedi'u selio â botwm cylchdro API IADC517 5 1/4″ (133mm) mewn stoc
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Carbid Twngsten Mewnosod darn drilio craig IADC517 5 7/8″ (149mm)
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API Wel drilio darn tricone IADC517 6″(152.4mm) ar werth
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Darnau dril rholer tricone IADC517 6 1/4″ (159mm)
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Darnau botwm roc wedi'i selio TCI IADC517 6 1/2″ (165mm) ar gyfer drilio'n dda
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did tricone TCI IADC517 7 1/2″ (190mm)
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Darn Tricôn Ffynnon Ddwfn IADC517 7 7/8 modfedd (200mm)
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API Tricone Bit IADC517 8.5 modfedd (215.90mm)
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Bit drilio API Tricone IADC517 8 3/4 modfedd (222mm) mewn stoc