Buoyancy assist tool with floating piston

A downhole apparatus comprises a casing string with a fluid barrier connected in the casing string. A degradable plug is positioned in the casing string above the fluid barrier. The degradable plug and fluid barrier define upper and lower ends of a buoyancy chamber in the casing string. The degradab...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Ahuja, Mayur Narain, Helms, Lonnie Carl, Parameshwaraiah, Rajesh, Yuan, Min Mark, Patil, Ishwar Dilip
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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