INSTRUMENTATION FOR A DOWNHOLE DEPLOYMENT VALVE

The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper section of a wellbore from a lower section. Thereafter, a pressure...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HOSIE, DAVID G, GRAYSON, MICHAEL BRIAN, BANSAL, R.K
Format:	Patent
Sprache:	eng ; fre
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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