Method for detecting pump-off of a rod pumped well

Details Method for detecting pump-off of a rod pumped well Method for detecting pump-off of a rod pumped well

1991-12-06

1993-08-24

Williams, Hezron E.

Measuring and testing

Borehole or drilling

Downhole test

166250, 417 63, 417 53, E21B 4700, F04B 4900

Patent

active

052378632

ABSTRACT:
A method for monitoring a rod pumped well and detecting when the well is pumped off. The method utilizes the measured rod load and position for each stroke to set load limits and position limits. The load limits and position limits are set as predetermined percentages of the difference between the maximum and minimum measured rod load and position. The area within the thus determined load and position limits is determined to detect when the well has pumped-off.

REFERENCES:
patent: 4487061 (1984-12-01), McTamaney et al.
patent: 4541274 (1985-09-01), Purcupile
patent: 4583915 (1986-04-01), Montgomery et al.
patent: 5064349 (1991-11-01), Turner et al.

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