Polished rod deflection-regulating blowout-prevening sealing for oil pumping machine

The utility model relates to a polished rod deflection-regulating blowout-preventing sealer for a rod-pumped well, which belongs to a deflection-regulating blowout-preventing and sealing device for a well head of a pumping well. Each component of a deflection-regulating blowout-preventing assembly o...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DONGHAI WANG, FUSHENG ZHANG, YONGWEN HAN
Format:	Patent
Sprache:	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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