RESETTABLE BACKUP AND SYSTEM

A backup including a gage ring having frustoconical surface and a groove in the frustoconical surface, a segment having a nose engaged with the groove, the segment having an overlap finger and a finger receptor, a wedge ring in contact with the segment, and a retainer member disposed to retain the s...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	BULLOCH, DYLAN, HARPER, JASON, OBERG, LEVI, EWING, DANIEL, DENG, GUIJUN
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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