Underground drilling method

An underground propelling method uses a propellant apparatus including a propellant head (1) having a pressure receiving face portion inclined relative to an axis of the head and a plurality of propellant cylinders (2) flexibly and pivotally connected in series to a rear end of the propellant head....

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	OKUYAMA, SHIGEAKI, MUKUNO, KATSUHIKO, HATTORI, MASAYA, TSUJIMOTO, KAZUNORI, YAMADA, YUKISHIGE, NAKAGAWA, MASAO, KABEUCHI, TERUO, TOGAWA, TAKASHI, SUGIYAMA, SHIRO
Format:	Patent
Sprache:	eng ; fre ; ger
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!