Using mines and tunnels for treating subsurface hydrocarbon containing formations

A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string is operated in a direction of rotation opposite that of the drilling string. A drill bit is rotated usi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	JOCHEN MARWEDE, DAVID BOOTH BURNS, ROBERT GEORGE PRINCE-WRIGHT, HORNG JYE HWANG, DUNCAN CHARLES MCDONALD
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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