METHOD FOR SELECTIVE ISOLATION OF PRODUCTIVE BED AT CEMENTATION OF PRODUCTION STRING

FIELD: oil, gas, and water recovery industry. SUBSTANCE: according to method, casing string is lowered into bore-hole which is provided with device for isolation of productive bed. Aforesaid device is positioned against productive bed. Viscous-resilient mixture is injected into interval against prod...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	FEFELOV JU.V, ASFANDIJAROV R.T, OVTSYN I.O, ALEKSEEV V.A, TATAUROV V.G, AFRIDONOV I.F, KARASEV D.V, NATSEPINSKAJA A.M
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	FIELD: oil, gas, and water recovery industry. SUBSTANCE: according to method, casing string is lowered into bore-hole which is provided with device for isolation of productive bed. Aforesaid device is positioned against productive bed. Viscous-resilient mixture is injected into interval against productive bed prior to or after lowering of casing string. After that, column of viscous-resilient mixture is fixed against productive bed. Subsequent cementation is carried out through by-pass passage of device and through annular space of bore-hole. Application of aforesaid method for selective isolation of productive bed is prominent for its high efficiency during cementation of production string and for simplified technology in isolation of any number of productive beds in bore-hole at any depth of their lying in bore-bole. EFFECT: higher efficiency. 1 dwg