COMBINED HYDRAULIC UNDERREAMER

The invention relates to drilling equipment and can be used for borehole enlargement in drilling process within needed range of diameters. A combined hydraulic underreamer consists of a body with central washing channel in which a spring-supported pusher is placed with possibility of displacement, a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KOTSKULYCH YAROSLAV STEPANOVYCH, SENIUSHKOVYCH MYKOLA VOLODYMYROVYCH, BILETSKYI YAROSLAV SEMENOVYCH, KOLOS IHOR YAROSLAVOVYCH, BILETSKA IRYNA YAROSLAVIVNA, KRYZHANIVSKYI YEVSTAKHII IVANOVYCH, BILETSKYI MYROSLAV SEMENOVYCH
Format:	Patent
Sprache:	eng ; rus ; ukr
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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