While-drilling water plugging device for emergency rescue drilling

The invention provides a while-drilling water plugging device for emergency rescue drilling, relates to the field of drilling, and solves the problems that drilling needs to be switched and the drilling operation efficiency is low when a water outlet stratum is drilled. The device comprises a bypass...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MENG QINGSHENG, ZHOU JING, YANG GANSHENG, LIU YONGSHENG, YUN XIAO, YANG ZHIYUAN, DOU ZIJUN
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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