Ma keʻano o ke kino kūlohelohe, ke koho ma waena o lalo-ka-Hūmū e pili ana i keʻano he cone Ma lalo he hoʻohālikelike o nā noiʻelua a me kā lākou mau noi maʻamau.

1. I lalo-ka-puka hammer (Dth) 

Ke hana '.  

  Hoʻohana i nā kūlana kiʻekiʻe-kiʻekiʻe (ea / nitrogen) e hoʻokele i kahi piston e hoʻokō i ka mea e hoʻopili ai i ka huiʻana o **.  

Pono:  

ʻO ka hana kiʻekiʻe ma ka pōhaku paʻakikī: wikiwiki wikiwiki wikiwiki i nā hana paʻakikī, nāʻano he nui e like me ka granite a me ka basalt (2-3 mau manawa wikiwiki.  

ʻO ka hōʻino haʻahaʻa haʻahaʻa:ʻO ka hoʻololiʻana o ke kaʻaʻana i nā mea komo wai (kūpono no ka haʻahaʻa haʻahaʻa a iʻole nā mea paʻaʻole).  

  Nā Kūlana Kūlana: Pono no nā maikaʻi a iʻole nā wahi kūponoʻole.  

Loaʻa i nā hemahema:  

Ke hilinaʻi nei i ke ahi: koi i nā mea hoʻonaninani a iʻole nā mea hoʻonaninani a iʻole nitrogen, e hoʻonui ana i nā uku.  

 ʻO nā palena hohonu: maikaʻi loa no ka pākuʻu i nā wahi hohonu-hohonu (

  Unsuitable no nā hana palupalu  

Ke noi maʻamau:  

 ʻO ka pahu kaʻa kaʻa kaʻa kaʻa i loko o ke kīwī paʻa a iʻole snale gas (e.g., ea, ea, foam drilling).  

  Eʻike i nā pūnāwai a iʻole ka liʻiliʻiʻana i ka pā pōhaku ma ka pōhaku paʻakikī (e.g., gravel  

 Nā wahi wai-Scarcing:ʻAʻohe wahi wai e pono ai.  

2.ʻO ka roler cone

Ke hana '.  

  Ka huliʻana i nā'ōpala a me ka pōhaku pōhaku ma o ka holoʻana a me ka hoʻopiliʻana.  

Pono:  

  ʻO Vertitility: E hoʻololi i nāʻano hana palupalu-paʻakikī  

  ʻO ka hoʻohālikelike hohonu-maikaʻi: kūpono no nā welau hohonu  

  Kumukūʻai-kūpono  

Loaʻa i nā hemahema:  

  ʻO ka maikaʻi haʻahaʻa ma ka pōhaku paʻakikī: Eʻae i nā lole wikiwiki i nā hana paʻakikī loa, e koi ana i nā mea hou.  

  ʻO ka hōʻehaʻana o ka mea hōʻeha: MUD Scrition e clog pres  

  Nā Kūlana Kūlana:ʻO ka liʻiliʻi o ka mana kūpono i nā wahi kūpono i hoʻohālikelikeʻia i nā pidc a iʻole dth.  

Nā noi maʻamau:  

  Nā Kūlana Kūʻai Kūʻai Kūlana:ʻO ka liʻiliʻi o nā mea i hoʻopaʻaʻia i nāʻano paʻakikī-paʻakikī (SandStone, Mudstone).  

  ʻO nā wahi noho kīwī nui: Paired me nā mea kiʻekiʻe kiʻekiʻe-density kiʻekiʻe e kaulike ai i ke kaomiʻana i keʻano.  

  Nā hana paʻakikī: I nā Zonedded a iʻole nā Zones (hoʻonuiʻia i ka hana ma ka hoʻolālā Tooth).  

3. Nā leka hou

PDC BITS: Ma keʻano o ke kino kūlohelohe,ʻo PolycrystalLines Social Sociactals  

Hoʻohanaʻiaʻo Hybrid: e hoʻohanaʻia nā koho likeʻole i nā papa, e.g.  

  DTH no nā papa'āina paʻakikī, ke hoʻololiʻana i nā pahu cone cone i nā mea hohonu hohonu.  

   Nā pahu PDC i loko o nā'āpana o nā'āpana, Roller Cone i nā'āpana i loko o nā'āpana paʻa.  

Dth Hammer: Hoʻolālāʻia no ka pōhaku paʻakikī, keʻano o ke kīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwī ai.  

ʻO Roller Conet Bit:ʻoi aku ka maikaʻi no ka hoʻopiliʻana i ka MUD Drilling  

 ʻO nā mea hoʻoholo hoʻoholo nui:ʻO ka paʻakikī paʻakikī Pono ke koho hope loa e hoʻopili i kaʻikeʻana i kaʻikepili