Casing chubu max akunja awiri 115-350mm ODEX kubowola bits eccentric overburden casing system pobowola zitsime zakuya

Njira zogwirira ntchito: 1.Dongosolo lobowola mochulukira lili ndi nyundo ya DTH, nyundo yopangidwa ndi eccentric ndi pilot bit, chida chowongolera ndi casing.The eccentric bit reming imazungulira kunja kuti kubowola dzenje lalikulu kuti chotengera chachitsulo chilowe m'bowo nthawi imodzi.Fumbi la mwala limawomberedwa kunja kwa dzenjelo kudzera m’chitoliro chotsekera.2.Pambuyo pobowola mpaka kuya kwapadera, chowongoleracho chidzabwezeredwa potembenuza pang'ono njira yozungulira kapena kukoka chida, ndipo ndi nthawi yomwe zida zobowolera zimatha kutulutsidwa.3.Kukoka chotchinga ndikudzaza konkriti kapena zinthu zina pansi pa dzenje.4.Kugwiritsa ntchito pobowola wamba kumatha kubowola mosalekeza, pomwe DTH bit imatha kubowola mpaka kuya kofunikira.