SUBSURFACE SAFETY VALVE FLAPPER

A FLAPPER (24) FOR USE AS A COMPONENT OF A SAFETY VALVE (10) DESIGNED FOR DEPLOYMENT IN A WELL BORE HAVING WELL BORE FLUIDS. THE FLAPPER INCLUDES A FLAPPER BODY (34) FORMING A FLAPPER VALVE BORE (44) THERETHROUGH. THE FLAPPER BODY (34) FURTHER FORMS A GROOVE (46) PROXIMATE TO THE FLAPPER BORE (44)....

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ROBERT C. HENSCHEL, ROBERT JANCHA
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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