Ukubunjwa kwe-Application Rock: I-Oilfield roller drill bits isetyenziswa ngokubanzi kwiindidi ezahlukeneyo zokwakheka kwamatye, kuquka ilitye lentlabathi, i-shale, ilitye lodaka, kunye namatye anzima.Ukukhetha uhlobo lwe-roller cone drill bit kuxhomekeke kubunzima kunye neempawu zokwakheka kwamatye.Iinjongo zokomba: Iinjongo zokomba zikwaphembelela ukukhethwa kwee-roller cone drill bits.Umzekelo, ukugrumba amaqula e-oyile kunye nerhasi yendalo kunokufuna iindidi ezahlukeneyo zokomba ukuze kuhlaliswe...