DOWNHOLE DRILLING APPARATUS WITH DRILLING, STEERING, AND REAMING FUNCTIONS AND METHODS OF USE

A downhole drilling apparatus may comprise a rotatable body with various cutting elements connected thereto, some radially protruding therefrom, some radially extendable therefrom, and some revolvable relative thereto about a common axis. In operation, when the body is rotated, the radially protrudi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Marshall, Jonathan D, Downton, Geoffrey Charles
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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