STEPPED DOWNHOLE TOOLS AND METHODS OF USE

A downhole tool includes at least a pilot section, a first expansion section, and a second expansion section. The pilot section has a plurality of cutting elements to cut a pilot hole. Each of the expansion sections has a plurality of cutting elements to successively expand the pilot hole to achieve...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Parkin, Edward George, Downton, Geoffrey Charles, Azar, Michael George
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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