Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1983-04-18
1985-04-09
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417 44, 417 53, 417 63, 73151, 166 65R, 166250, 364507, 364550, F04B 4906, E21B 4700, G06F 1520
Patent
active
045099014
ABSTRACT:
Method and apparatus for detecting problems in sucker-rod well pumps and for determining which type of problem occurs. A first transducer provides a signal representative of the load on a sucker-rod string and a second transducer provides a signal representative of the sucker-rod position. The load signal and the position signal are used to generate a dynagraph of rod load vs. rod position with the pump working normally. A working dynagraph is continually compared with the normal dynagraph and a working load signal is continually compared with a normal rod load signal to detect problems in the pumping system and to determine the type of problem detected if one does develop.
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Bisbee Gary W.
Delfino Allan B.
McTamaney Louis S.
FMC Corporation
Freeh William L.
Guernsey Lloyd B.
Megley R. B.
Neils Paul F.
LandOfFree
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