Core tube displacer for long reach drilling machines

The long-reach drilling machine is for exploration drilling and core sample collecting and comprises a drill string comprising a variable number of hollow drill rods, a drill bit installed at a first end of the drill string, a ground-resting drill base for installation outside a borehole, a mast att...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TENHAVE, Geoffrey, GAGNON, Pierre, LAPLANTE, Philippe
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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