Packer

The utility model relates to a packer to solve the problem that in the prior art, a steel belt of an expansion rubber sleeve of a packer is prone to breakage in the repeated setting and unsetting process, an inner container is punctured, and consequently the packer is unsealed. The packer comprises...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MA HONGWEI, YU TIEJING, ZHANG YIZHI, DONG JUNFENG, ZHU HUI, JIAO MINGYUAN, WANG XINZHI, CHEN JING
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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