WELL BLOWOUT PREVENTER AND PACKING ELEMENT

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

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: FERNANDO MURMAN, WAI JUNG HUEY, EUGENE MATSUDA
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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Beschreibung
Zusammenfassung: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 engaging the pipe, and lowest at the top of the packer extent engaging the pipe. The preventer piston has at least three, and typically four, frusto-conical surfaces to progressively and sequentially penetrate the packer rubber to effect controlled and enhanced rubber displacement for sealing against the pipe or tool.