I-HFD DHD eyehla nembobo izingcezu isekelwa inzuzo eyingqayizivele yokuthi sisebenzisa ubuchwepheshe bobunikazi namalungelo obunikazi ukuze sikhiqize amathuluzi ezimayini ekhwalithi ephezulu nangabizi kakhulu ngokubambisana. Imikhiqizo isetshenziswa kakhulu ezimayini, ubunjiniyela bengqalasizinda, ukumba uwoyela, imithombo yamanzi kanye nobunjiniyela besisekelo senqwaba kanye neminye imikhakha. Ngemva kweminyaka engaphezu kweshumi yocwaningo, isici esihlukile se-HFD drill bits ukuthi yamukela ubuchwepheshe obusha besimanje be-carbide, obunganciphisa ukuguga, kunwebe impilo yesevisi futhi kunciphise ukuphazamiseka. Ngokwelashwa okuthuthukisiwe kokushisa nokwanda kokuqina kwendawo, umzimba we-valve uba uqina, uqine futhi uqine, okusho ukusebenza okuphakeme nempilo yesevisi ende. Futhi singakunikeza isisombululo esingcono kakhulu sezimayini zakho, ngokusebenza kahle okuphezulu kanye nezindleko eziphansi, noma singakuhlela ngendlela efanele isimo sakho semayini.
