DEVICE FOR STEPPED WELL CEMENTATION

FIELD: oil production, particularly for well completion and cementation thereof. ^ SUBSTANCE: device has body and case with cementing and process orifices, main bush with baffle, differential bush with fixing members installed to perform axial movement between case and body, cementing plugs, upper a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ASFANDIJAROV R.T, ALEKSEEV V.A, ASFANDIJAROV I.R, ISHBULATOV R.SH
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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