Intshayelelo ngokubanzi:

I-ODEX (ifutshane kwi-"Overburden Drilling Excentric") ikwabizwa ngokuba yi-Stratex, i-Tubex okanye i-ODS. Kukulungelelaniswa kwehamile ye-DTH yokujikeleza komoya. Inamasuntswana e-eccentric ajingiyo ukuphinda abuyele ezantsi kwebhokisi. Kwaye i-percussion bit inamacandelo amabini eengcebiso ezizinzileyo: i-pilot bit concentric, kwaye emva kwayo kukho i-eccentric reamer bit ejingayo yokwandisa i-diameter yequla ngexesha lokomba. Emva kokuba i-eccentric bit sisixhobo sesikhokelo esibandakanya isicathulo esikhethekileyo sangaphakathi esinamagxa phantsi kwe-ODEX casing. I-ODEX ke ngoko itsalwa phantsi ngumtya wokubhola njengoko umngxuma uqhubela phambili. Ukusika kuqhume umsantsa we-annulus phakathi kwesixhobo sesikhokelo kunye nesihlangu se-casing ukuya kwi-swivel ekhokelela emhlabeni okanye kumqokeleli wesampuli.

Iinkqubo ze-ODEX zezona zisombululo zezoqoqosho zokugrumba i-casing kwiimeko eziphantsi komhlaba. Zithandwa kakhulu kwiikontraka zokomba zokufaka kwiqula lamanzi, imithombo ye-geothermal, umngxuma ophakathi we-mini-type grouting yesakhiwo, iprojekthi yedama kunye ne-harbor, kunye nomsebenzi ongekho nzulu wokupakisha. Ngenxa yobukrelekrele bephiko lokuhlaziya, intwana iyakwazi ukufunyanwa kwaye inokusetyenziswa kwakhona. I-ODEX ifanelekile kwimingxuma emifutshane kwi-homogenous overburden, ngenxa yeenzuzo ezibalaseleyo njengesakhiwo esilula, ukusebenza okulula, izixhobo zokugaya ezinokubuyiswa, ubomi benkonzo ende kunye nomgangatho omhle. Iimpawu zokomba zeenkqubo ze-ODEX ziyafana ngokufanayo nendlela yokomba yehamile ye-DTH, efana nale:

Ukususwa ngokukhawuleza kokusika;

Izinga eliphezulu lokungena, ngokukodwa ekubunjweni kwamatye okuchasayo (umzekelo, i-basalt);

Umhlaba olula kunye nesampulu yamanzi aphantsi komhlaba ngexesha lokomba;

Kunokwenzeka ukulinganisa uqikelelo lwesivuno kubunzulu obukhethiweyo kuyilo;

I-Advantageous kwiifom ezingadityaniswanga kunye nomngcipheko ophezulu wokugoba (oku mhlawumbi yeyona nto ibalulekileyo).

I-PLATO ineentlobo ze-ODEX ukusuka kwi-ODEX90 ukuya kwi-ODEX280, eveliswe ngamanqina amaninzi eezando ze-DTH ezixhaphakileyo ukusuka kwi-3 "ukuya kwi-10". Zonke ziquka iSixhobo seSikhokelo, iCasing Shoe, i-Eccentric Reamer, iPilot Bit, iSleeve seSikhokelo, kunye neeKits zokutshixa.