Oil pumping unit load-loss protection suspension center following method and system

The invention relates to the technical field of oil pumping units, in particular to an oil pumping unit load-loss protection suspension point following method and system, and the method comprises the steps: controlling a polish rod to operate at a preset operation speed in an operation mode; judging...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU SHUANG, WANG NAN, CHU NINGXUAN, GUO MINGYUE, ZHANG YANLI, ZHAO JIAN, ZHANG DEGANG, LIU XIANG, WEN JINJIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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