Measuring and testing – Borehole or drilling – Downhole test
Patent
1983-04-18
1984-11-20
Caldwell, Sr., John W.
Measuring and testing
Borehole or drilling
Downhole test
375 27, 340347DD, 346 33WL, E21B 4700, H03K 1322
Patent
active
044831889
ABSTRACT:
Method and apparatus for recording and subsequent playback of selected dynagraphs for wells employing sucker-rod pumping units to determine well faults which cause well shutdown. Calibration data from well monitoring equipment is stored in a first "endless tape" type of memory during calibration of the well and operation data from the monitoring equipment is stored in a second "endless tape" memory during well operation. After well shutdown the stored data can be retrieved and the operation data stored immediately prior to well shutdown compared with calibration data to determine what type of fault caused well shutdown.
REFERENCES:
patent: 3824851 (1974-07-01), Hagar et al.
patent: 4143546 (1979-03-01), Wiener
patent: 4361893 (1982-11-01), Bonnerot
Bisbee Gary W.
Delfino Allan B.
McTamaney Louis S.
Caldwell Sr. John W.
FMC Corporation
Guernsey L. B.
Harding, Jr. Ellwood G.
Megley R. B.
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