Jet-recoil type underground pipe cutter and method for exposing ore bed

The pipe cutter with connected rod body is a cylindric structure with smaller end faces and thicker middle part, which has main blade group at one side and nozzle at another side. The pipe cutter rotates with drilling rod and can cut off casing by using recoil of jet as positive pressure. Jet can da...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FAN CHUANZHONG, TUO ZHIPING
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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