WELL HEAD SEALING DEVICE

FIELD: oil industry, particularly to operate oil and gas wells working under pressure. ^ SUBSTANCE: device has body rigidly secured to hydraulic cylinder and hollow piston arranged in the hydraulic cylinder. Arranged in the body are sealing member, upper and lower guiding rings installed correspondi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	OSNOS V.B, STRAKHOV D.V, MAKHMUTOV I.KH, ZIJATDINOV R.Z
Format:	Patent
Sprache:	eng ; rus
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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