Nā ʻāpana wili i hana ʻia me ka API IADC126 5 1/4 ʻīniha (133mm) no ka pōhaku paʻakikī

Ma muli o ka mea ʻoki, hiki ke hoʻokaʻawale ʻia nā ʻāpana tri-cone i nā ʻāpana TCI a me nā ʻāpana niho kila.
He kūpono ʻo TCI IADC126 no nā ʻano palupalu loa. He mea nui loa ke koho ʻana i ka ʻūlili pōhaku kūpono ma mua o ka hoʻomaka ʻana i ka papahana.
Hiki ke hoʻokaʻawale ʻia ka paʻakikī o nā pōhaku i ka palupalu, waena, paʻakikī a paʻakikī loa paha, a he ʻokoʻa paha ko lākou paʻakikī no ka pōhaku hoʻokahi, no ka laʻana, he pōhaku lepo palupalu ko ka pōhaku lepo, ka pōhaku one a me ka pōhaku shale, he pōhaku lepo waena a he pōhaku lepo paʻakikī, he pōhaku one waena a he pōhaku one paʻakikī, a pēlā aku.
Me 15 mau makahiki a ʻoi aku ma mua o 30 mau ʻāina o ka ʻike lawelawe i ka ʻenekinia wili, ua hāʻawi ʻo Far East i nā ʻāpana wili a me nā ʻuhane wili holomua no nā mea kūʻai aku he nui, nā noi like ʻole. ʻO kēia mau mea e pili ana i ke kahua ʻaila, ke kinoea, ka ʻimi honua, ka dredging, ka mining, ka wili ʻana i ka lua wai, HDD, ke kūkulu ʻana a me ke kahua.
Inā hiki iā ʻoe ke hāʻawi i ka ʻike kikoʻī, e like me ka paʻakikī o ka pōhaku, ke ʻano o ka mīkini wili, ka wikiwiki o ka wili, ke kaumaha a me ka torque o ka bit, hiki iā mākou ke hāʻawi iā ʻoe i ka hopena kūikawā a kahi ʻenekinia. Ke haʻi mai ʻoe iā mākou e pili ana i ka wili kū pololei, ka wili ʻana i ka pae, ka wili ʻana i ka luawai ʻaila, ka wili ʻana me ka ʻole o ka ʻeli ʻana a i ʻole ke kūkulu ʻana i ke kahua, kōkua pū ia iā mākou e loaʻa ka bit wili kūpono nāu.