Nā ʻāpana tricone hohonu IADC216 6 ʻīniha (152mm)

Wahi a ke ʻoki ʻana i nā mea, hiki ke hoʻokaʻawale ʻia ʻekolu mau ʻāpana cone i ka ʻāpana TCI a me ka ʻāpana Milled Tooth
He mea nui loa ke koho ʻana i nā ʻāpana wili pōhaku kūpono ma mua o ka hoʻomaka ʻana i ka papahana.
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.
Ma ka papahana ʻeli ʻana, he 15 mau makahiki a ʻoi aku ma mua o 30 mau ʻāina ka ʻike lawelawe o Far Eastern e hoʻolako i nā ʻāpana ʻeli a me nā ʻuhane ʻeli holomua no nā noi like ʻole. ʻO ka noi e pili ana i ke kahua ʻaila, ke kinoea kūlohelohe, ka ʻimi honua, ka hoʻopōʻino ʻana i ke ala, ka mining, ka ʻeli ʻana i ka luawai wai, HDD, ke kūkulu ʻana, a me ke kahua. Hiki ke hoʻopilikino ʻia nā ʻāpana ʻeli like ʻole e like me ke ʻano pōhaku like ʻole no ka mea he hale hana ʻeli ponoʻī kā mākou API a me ISO. Hiki iā mākou ke hāʻawi i ka hopena a kā mākou ʻenekinia ke hiki iā ʻoe ke hoʻolako i nā kūlana kikoʻī, e like me ka paʻakikī o nā pōhaku, nā ʻano o ka wili ʻana, ka wikiwiki rotary, ke kaumaha ma ka ʻāpana a me ka torque. Kōkua pū ia iā mākou e ʻimi i nā ʻāpana ʻeli kūpono ma hope o kou haʻi ʻana mai iā mākou i ka ʻeli ʻana i ka luawai kū pololei a i ʻole ka ʻeli ʻana i ka pae, ka ʻeli ʻana i ka luawai aila a i ʻole ka ʻeli ʻana i ka No-Dig a i ʻole ka pila kumu.