METHOD AND APPARATUS FOR MONITORING WELL PUMPING UNITS

Method and apparatus for monitoring the operation of a sucker rod-type pump employed in withdrawing fluids from a well. A transducer is employed to generate a signal representative of the load in the pumping unit as the rod string is reciprocated to operate a downhole pump. This signal is differenti...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	STOLTZ J,US, MONTGOMERY R,US
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS FIXED CONSTRUCTIONS GENERATION 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Method and apparatus for monitoring the operation of a sucker rod-type pump employed in withdrawing fluids from a well. A transducer is employed to generate a signal representative of the load in the pumping unit as the rod string is reciprocated to operate a downhole pump. This signal is differentiated in order to produce a derivative function which is representative of the rate of change of the load signal. The derivative function is analyzed to detect indications of fluid pounding of the well. When a given condition of fluid pounding is encountered, a monitor function is produced which is employed to initiate action such as temporarily shutting down the pumping unit or activating an alarm. The signal from the transducer also is analyzed for a normal high load amplitude and for amplitudes which fall outside of a desired maximum-minimum load range. The invention may be implemented by hardwired or software systems.