DEVICE FOR SCREWING-OFF AND DESTRUCTION OF REAMED STRING

FIELD: oil and gas industry.SUBSTANCE: invention is intended for screwing-off and destruction of shoe during installation in wells of expanded columns. Device includes a housing with flushing channel, mounted rigidly on it cutting mandrel with communicated with flushing channel central and working h...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Ilalov Rustam KHisamovich, YAgafarov Albert Salavatovich, KHamityanov Nigamatyan 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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