Well drilling slime pump overpressure automatic protective device

The utility model relates to a well drilling slime pump overpressure automatic protective device and belongs to the technical field of petroleum engineering well drilling slime pump pressure control devices. A gas relay and a gas releasing valve are successively installed on a gas pipeline connected...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHAI MINGJUAN, WANG ZIMIN, WEI XUEJING, SUN CHENGLONG, ZHAO XIANGZE
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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