Blowout hole prevention combined damping drilling tool and using method thereof

The invention discloses a blowout hole prevention combined damping drilling tool and using method thereof. The combined damping drilling tool comprises an exposed drill bit, a damping drill rod, a broaching drill bit and a conventional drill rod which are coaxially arranged, the exposed drill bit is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CAO JUNWEN, SUN YUNING, WANG YONGLONG, LI XIAOPING, HE ZHIHONG, ZHANG MIN, YU ZAIJIANG, DING LIPEI, YANG WEI, LI JIAN, CHAI WENZHU, PEI YUXIANG
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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