Circulating exhaust type oil well pump for oil field

The invention relates to the technical field of oil well pumps, in particular to a circulating exhaust type oil well pump for an oil field. A circulating exhaust type oil well pump for an oil field comprises a pump cylinder, a plunger is connected to the upper side in the pump cylinder in a sliding...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG MING, WANG ZHANWEI, CHENG WEIHAI, ZHANG QUN, LIU DANDAN, CUI JIANWEN, ZHAO LEI, SHANG TONGHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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