Kumntu wegesi yegesi, ukukhetha phakathi kwe-Hamler-Hole Haller (DTH) kunye ne-roller cone bit ngokuyintloko ixhomekeke kwi-ithology ye-lisholog, indlela yokuqhuba, kwaye ** impumelelo **. Apha ngezantsi kukholekiswa kwezi zibini kunye nezicelo zazo eziqhelekileyo:

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UMGAQO-NKQUBO WOBUCHULE:  

  Sebenzisa igesi ye-gesi ephezulu (umoya / i-nitrogen) ukuqhuba ipiston enefuthe le-drill bit, reaking Rock ngokudityaniswa kwe-** ifuthe lokujikeleza +.  

Izibonelelo:  

Ukusebenza kakuhle kwiLitye eliFure: isantya esikhawulezayo sesantya esinzima, i-Brittles yenziwa njengeGranite kunye neBallat (amaxesha ama-2-3 ngokukhawuleza kune-bits ye-roller cone).  

Umonakalo ophantsi weVimba: Ukujikeleza kwegesi kunciphisa ukuhlasela kwegesi (ilungele uxinzelelo olusezantsi okanye i-tistrianes).  

  Ukuguquguquka kwendlela  

Izinto ezingalunganga:  

Ukuxhomekeka kwegesi: kufuna iingcinezelo zomoya okanye oovimba bee-nitrogen, ukunyuka kweendleko.  

 Ukulinganiselwa okunzulu Ukujikeleza kwegesi ukujikeleza kwegesi kwiqula elinzulu.  

  Ayifanelekanga ukuba i-foometion ethambileyo: i-prone yokubhokhwe ibhola kwi-shale okanye i-sudstone.  

Isicelo esiqhelekileyo:  

 Irhasi yegesi engagungqiyo yegesi okanye irhasi yerhasi (E.G., umoya, i-filling).  

  Ukuphononongwa kwequla okanye ukuntywila komphezulu kwilitye elinzima (E.G., imilebenti yeGravel, i-Igneous Rock).  

 Imimandla enqabileyo yamanzi: Akukho luhlanga lwamanzi olufunekayo.  

I-2. I-roller cone bit

UMGAQO-NKQUBO WOBUCHULE:  

  Ukujikeleza i-cones crush kunye ne-Shear Rock ngentshukumo kunye nokunyanzelwa.  

Izibonelelo:  

  Ukutshintsha: Ukuziqhelanisa nokuziqhelanisa nokwenza izinto ezithambileyo  

  I-DEAD-OKANYE IPHEPHA LOKUGQIBELA LWE-HOORS (> iimitha ezingama-3 000) kunye neqondo lobushushu obuphezulu / uxinzelelo oluphezulu (HTP).  

iimitha ezingama-3 000) kunye neqondo lobushushu obuphezulu / uxinzelelo oluphezulu (HTP).  

  Iindleko ezisebenzayo: Iindleko ze-upfront ezisezantsi, itekhnoloji eqolileyo, kunye nokudityaniswa ngokulula (  

Izinto ezingalunganga:  

  Ukusebenza kakuhle kwiLitye le-Hart: I-RAPID YOKUGCINA KAKHULU NGOKUFANELEKILEYO, UKUFUNA UKUTHENGA NGOKUGQIBELA.  

  Umngcipheko wokugcina indawo yokugcina amanzi  

  Imiceli mngeni yendlela: Ulawulo oluchanekileyo lwezinto ezithe tyaba ngokuthe tye xa kuthelekiswa ne-PDC Bits okanye DTH.  

Izicelo eziqhelekileyo:  

  Imithombo yegesi eqhelekileyo yegesi: Ukugqobhoza irejista kwi-Peverium-Fitter (iLitye leSaba, i-Mudstone).  

  Deep gas reservoirs: Paired with high-density mud to balance formation pressure.  

  Imimandla exineneyo  

3. Amanqaku ongezelelweyo

I-PDC Bits: Kwindalo yegesi, i-polycrystalline yedayisi yedayisi (PDC) isetyenziswa ngokubanzi, ngakumbi kwimithombo ethe tyaba, inikezela ngokuxhathisa okuphezulu.  

Ukusetyenziswa kweHybrid: Iibhithi ezahlukeneyo zinokusetyenziswa kumanqanaba, e.g .:  

  I-DTH yezints ezinzima, ukutshintshela kwi-roller cone bits kwimozulu enzulu kakhulu.  

   I-PDC Bits kumacandelo athe tyaba, i-roller cone bits ngamacandelo athe nkqo.  

I-DTH Hammer: ibeka phambili kwilitye elinzima, igesi irhangqa, indawo yoxinzelelo ephantsi / ephantsi, igxininisa isantya kunye nokukhuseleka kwesantya kunye nokugcina amanzi.  

I-roller cone bit: ilungele ukuntywila ngokungxamisekileyo, amaqula anzulu, ethambileyo - ophakathi