Water gushing blocking device in drill hole for horizontal wire-line coring

The invention discloses a horizontal wire-line coring in-drill-hole water burst blocking device which comprises an annular main body, blades and an elastic reset part, the multiple blades are sequentially hinged to the side wall of one side of the main body in the circumferential direction, the mult...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HUANG XIAOLIN, LUO XIANLIANG, WANG JIUQUAN, WU JINSHENG, ZHANG JIDONG
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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