High temperature-resistance external casing packer

The invention provides a high temperature-resistance external casing packer, which is characterized by comprising an upper connector, a primary liquid tank, a first rubber bucket, a second rubber bucket, a secondary liquid tank, a third rubber bucket, a tertiary liquid tank and a lower connector, wh...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TONG WENKE, LU GUOZHU, WANG SHUYIN, CAO XUEHONG
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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