Methods and apparatus for protecting downhole deployment valves (DDV) from falling objects

A downhole deployment valve (DDV) system (100) comprises tubular string in a wellbore (104), and object stopping assembly (108) for stopping an object (106) falling toward the valve member (102) prior to the object contacting the valve member. Any combination of valve protection features may be used...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DAVID PAVEL, MIKE A LUKE, TOM FULLER, BRIAN GRAYSON, R K BANSAL, DARRELL JOHNSON, DAVID BRUNNERT
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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