LARGE BORE AUTO-FILL FLOAT EQUIPMENT

An auto-fill type float collar assembly is provided. The float collar assembly of the present invention has at least one curved flapper-style valve, preferably constructed of composite, non-metallic material. Each flapper of the present invention has a substantially 90° range of motion, and is close...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ARCEMENT JEFFREY, JORDAN J. CHRISTOPHER, GROESBECK BRAD, MARTENS JAMES G
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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