Well blowout preventer, and packing element

A well blowout preventer packer unit is characterized by long life, and induced back to front (radial) rubber feeding between metallic inserts to close on well pipe or on a well tool for producing a pressure gradient against the pipe or tool which is greatest at the bottom of the packer extent engag...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HUEY, WAI J, MURMAN, FERNANDO, MATSUDA, EUGENE
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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