Casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fish

The invention relates to the technical field of underground fishing tools, and discloses a casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fallen fish, which comprises an upper adapter connector, an upper casing milling barrel, a casing milling double-mal...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG WENGANG, TIE ZHONGYIN, ZHENG CHANGQING, WU YUJUN, SUI SHENG, WANG HANQING, JIANG DINGCHUAN, LUO HAN, WU XIA, LI YUYAO
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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