Reverse circulation drilling amathuluzi
Ukumba i-Reverse Circulation (RC) kuyindlela esetshenziswa ekuhloleni amaminerali nasezimayini ukuqoqa amasampula amatshe ngaphansi komhlaba. Ekubholeni i-RC, kusetshenziswa isando sokumba esikhethekile esaziwa ngokuthi "isando sokuzungeza i-Reverse Circulation". Lolu hlelo lokusebenza lusebenza kahle kakhulu ekutholeni amasampula ekhwalithi ephezulu kusuka kumatshe ajulile naqinile. I-Reverse Circulation drilling ithuluzi isando somoya esiklanyelwe ukudala amandla abheke phansi ngokushayela i-drill bit ekwakhekeni kwedwala. Ngokungafani nokubhola okujwayelekile, lapho okusikiwe kukhushulelwa phezulu ngentambo yokubhoboza, ekubholeni kwe-RC, ukwakheka kwesando kuvumela ukujikeleza okuphambene kokusikwa.
