ʻO ka ʻūpā Tricone hohonu IADC517 7 7/8 ʻīniha (200mm)

Wahi a ka mea ʻokiʻoki, hiki ke hoʻokaʻawale ʻia ka ʻāpana tirocne i ka ʻāpana TCI a me ka ʻāpana niho kila. ʻO ka ʻāpana API TCI tricone. Loaʻa i ka iIADC517 7 7/8" (200mm) ke ʻano o ka bearing Rubber/Elastomer a me ka bearing Metal sealed. Manaʻo mākou e koho mākou i nā ʻāpana bearing sila maka metala no nā lua pōhaku hohonu me nā ʻano paʻakikī. No ka ʻeli ʻana i ka lua hohonu loa, paipai mākou i nā ʻāpana tricone bearing sila maka metala ma ka hohonu o ka ʻeli ʻana ma mua o 1000 mika, no ka pōhaku paʻakikī a me ka ʻeli ʻana i ka lua pilot trenchless mamao loa i ʻoi aku ka lōʻihi ma mua o 300 mika ke paipai pū nei mākou i nā ʻāpana tricone bearing sila maka metala. No ka ʻeli ʻana i ka lua wai, ka ʻeli ʻana i ka lua pāpaʻu a i ʻole nā ​​papahana ʻeli lua pilot trenchless mamao pōkole, ʻoi aku ka maikaʻi o ka hana kumukūʻai o nā ʻāpana tricone bearing sila elastomer (rubber).
Hiki i ka paʻakikī o nā pōhaku ke palupalu, waena a paʻakikī a paʻakikī loa paha, hiki ke ʻokoʻa iki ka paʻakikī o kekahi ʻano pōhaku, no ka laʻana, ka limestone, ka sandstone, he limestone palupalu ka shale, ka limestone waena a me ka limestone paʻakikī, ka sandstone waena a me ka sandstone paʻakikī, a pēlā aku.
He mea nui loa ke koho ʻana i nā ʻāpana wili pōhaku kūpono ma mua o ka hoʻomaka ʻana i ka papahana. ʻO ka hapa nui ʻo IADC517 no ka wili ʻana i nā pōhaku palupalu a ʻo IADC637 no ka wili ʻana me ka ikaika loa.