Lubricating anti-overflow oil well head packing box pressing cap seal device

The utility model discloses a lubricating anti-overflow oil well head packing box pressing cap seal device which comprises at least two levels of packing boxes for sealing. The packing boxes are disposed above an eccentric hoop head. A lubricating device is disposed between the two levels of packing...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WU BO, DU GUODONG, ZHANG WENJUN, WANG YONGGANG, DENG DONGFANG, WANG JINGQIANG, ZHANG DUORUI, WANG HAIPEI, WANG YANPING
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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