Casing cutter tool and method for operating the casing cutter - pressure actuated piston sleeve actuating ball valve

The invention is a drill pipe string (10) - conveyed casing cutter tool comprising - a cylindrical main body (0) with casing cutter knife arms (3) rotatable on pivot axles (31) and provided with rotating cogs (32) in a first end of said knife arms (3), said knife arms (3) retractable into recesses (...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Trond Skjeie, Andreas Fliss
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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