Ityhubhu yeCasing max idayamitha yangaphandle 115-350mm ODEX drill bits eccentric overburden overburden system yokomba amaqula amanzi anzulu

Amanyathelo okusebenza:1.Inkqubo yokugrumba i-overburden iqulethe isando se-DTH, i-eccentric eyenzelwe ukubuyisela kwakhona kunye ne-pilot bit, isixhobo sokukhokela kunye ne-casing.I-eccentric bit reming ijikeleza ngaphandle ukugrumba umngxuma omkhulu ukwenzela ukuba isingxobo sentsimbi singene emngxunyeni ngaxeshanye.Uthuli lwamatye luvuthelwa ngaphandle komngxuma ngombhobho wecasing.2.Emva kokugrumba kubunzulu obuthile, i-reamer iya kurhoxiswa ngokuguqula kancinci isalathiso sokujikeleza okanye ngokutsala isixhobo, kwaye lixesha apho izixhobo zokomba zinokukhutshwa.3.Ukutsalwa kwecasing kwaye okwangoku kufakwe ikhonkrithi okanye ezinye izinto phantsi komngxuma.4.Ukusebenzisa isuntswana eliqhelekileyo lokomba kunokuqhuba ngokuqhubekayo umngxuma, ngelixa i-DTH bit inokwemba kubunzulu obufunekayo.