Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1995-09-28
1997-10-21
Thorpe, Timothy
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417 53, 73151, 16625001, F04B 4900
Patent
active
056789815
ABSTRACT:
A method is provided to monitor operation of a sucker rod pump, the sucker rod pump having a strain gauge mounted on a walking beam for determination of load. This method compensates for gradual changes in load due to temperature drift when gradual changes in surface card area are occurring and the surface card area or the measured average loads are within a range of a predetermined base surface card area or base average load. When the surface card area or the measured average load is not within this predetermined range, a correction is made to adjust a smoothed minimum load to an adjusted buoyant weight of the sucker rod string. This adjusted buoyant weight is the value that the smoothed minimum load would be expected to be. This algorithm therefore compensates differently for changes in load when the surface card area (or alternatively, the average load) are not within a predetermined value because these changes are generally not due to temperature changes, but due to changes in the operation for which the sucker rod pump monitoring and control system should respond. An alternative correction to the measured load is also provided for time periods when the sucker rod pump is idle.
REFERENCES:
patent: 4490094 (1984-12-01), Gibbs
patent: 4509901 (1985-04-01), McTamaney et al.
patent: 4583915 (1986-04-01), Montgomery et al.
patent: 5006044 (1991-04-01), Walker, Sr. et al.
patent: 5167490 (1992-12-01), McKee et al.
patent: 5224834 (1993-07-01), Westerman et al.
patent: 5237863 (1993-08-01), Dunham
patent: 5252031 (1993-10-01), Gibbs
patent: 5314016 (1994-05-01), Dunham
patent: 5362206 (1994-11-01), Westerman et al.
patent: 5372482 (1994-12-01), London et al.
patent: 5423224 (1995-06-01), Paine
Christensen Del S.
Shell Oil Company
Thai Xuan M.
Thorpe Timothy
LandOfFree
Method to control sucker rod pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method to control sucker rod pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to control sucker rod pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1001931