Spiral underground packing tool and ball seat

The utility model relates to the field of petroleum underground construction, in particular to a spiral underground packing tool and a ball seat, the underground packing tool comprises a central pipe with a conical outer surface, and the central pipe is provided with an axial through hole; the ancho...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZENG QIJUN, WANG JINLU, QIU CHENGSONG, ZHENG WEI
Format:	Patent
Sprache:	chi ; eng
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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