CASING PIPE AIR-TIGHTNESS CONTROL DEVICE

FIELD: oil production, particularly sealing or packing boreholes or wells. ^ SUBSTANCE: device comprises two packers having the same structure and pressure relief valve installed in-between. The relief valve is adapted for excessive pressure discharge into annuity between the device and casing pipe....

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MELING KONSTANTIN VIKTOROVICH, RATANOV KONSTANTIN ALEKSEEVICH, KHAMIT'JANOV NIGAMAT'JAN KHAMITOVICH
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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