API ibe n'ibe soplaya IDC217 8 3/4 inch (222.2mm)

Dabere na ihe ịkpụ, enwere ike kewaa tri-cone drills na TCI drills na ígwè-eze.

Aha ọzọ maka ígwè eze tri-cone drill bụ milled eze tri-cone drill n'ihi na ezé ya na-emepụta site igwe igwe igwe na cone elu bụ nke tungsten carbide hardfacing. Steel eze tri-cone bit nwere ogologo ezé karịa TCI tri-cone bit, n'ihi ya, ọ nwere ike na-egwupụta nro formations na elu ROP.
N'ime ọrụ ịkụ ala mmanụ, ROP nke mkpọpu mmiri na-emighị emi nwere ike iru mita 30 kwa elekere.

Na 15 afọ na karịa 30 mba nke ọrụ na-egwupụta ihe engineering, anyị enyela akukuku bits na elu mkpọpu mkpụrụ obi maka ọtụtụ dị iche iche ngwa. Ngwa ndị a gụnyere mmanụ mmanụ, gas, nyocha ala, ikpochapụ, igwu ala, igwu mmiri nke ọma, HDD, ihe owuwu na ntọala.

Ebe ọ bụ na anyị nwere API nke anyị na ụlọ ọrụ ISO gbaara agbapụta, enwere ike ịhazi ibe ntu dị iche iche maka nhazi dị iche iche. Ọ bụrụ na ị nwere ike ịnye anyị ọnọdụ ndị akọwapụtara dị ka hardness rock, ụdị nke mkpọpu mmiri, ntụgharị ọsọ, bit arọ na torque, anyị nwere ike inye ihe ngwọta nke engineer. Ọ na-enyekwara anyị aka ịchọta ihe ziri ezi maka gị mgbe ị na-agwa anyị gbasara mkpọpu ala kwụ ọtọ ma ọ bụ ngwungwu kwụ ọtọ, igwu mmiri nke ọma mmanụ ma ọ bụ enweghị mgbapu ma ọ bụ ikpokọta.