Packer and packing method for quickly plugging formation water outlet in air drilling

The invention belongs to the technical field of coal seam plugging, and particularly relates to a packer and a packing method for rapidly plugging formation water outlet in air drilling, the packer is composed of an upper part, a middle part and a lower part, the upper part and the lower part are fi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG BAOYU, NI XIAOMING, JEON SUNG-WON, LYU RUNSHENG, LIANG HAIJUN, ZHANG HAOQUAN, ZHANG HAIQING, ZHU LIN, FU HUI, LI YANHE
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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