REVERSE CIRCULATION APPARATUS AND METHODS FOR USING SAME

In one aspect, an apparatus for drilling a wellbore into an earth formation is disclosed, which apparatus, according to one embodiment, may include a drill string configured to be conveyed into a wellbore, wherein an annulus is formed between the drill string and a wellbore wall, a first flow device...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KRUEGER, VOLKER, BRUNS, JENS-UWE, KRUEGER, SVEN
Format:	Patent
Sprache:	eng ; fre
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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