hat
Ranvèse sikilasyon (RC) perçage sèvi ak yon tiyo egzèsis double-gwo ranpa (baton) ak yon ti jan egzèsis solid yo pwodwi yon twou nan yon fòmasyon ak delivre bato wòch (koupe) nan sifas la pou yon analiz ki vin apre. Mekanis nan perçage se yon twonpèt altènatif konpwesyon (mato) kondwi yon d tengstèn-asye ...
eng
Reverse circulation (RC) drilling uses a dual-walled drill pipe (rod) with a solid drill bit to produce a hole in a formation and delivers rock chips (cuttings) to the surface for a subsequent analysis. The drilling mechanism is a pneumatic reciprocating piston (hammer) driving a tungsten-steel d...