Wells – With electrical means – Indicating
Reexamination Certificate
2007-05-22
2007-05-22
Tsay, Frank (Department: 3672)
Wells
With electrical means
Indicating
C166S053000, C166S104000, C417S018000, C417S022000
Reexamination Certificate
active
11386210
ABSTRACT:
The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well pumping system and a second sensor for measuring a position of the structure. The apparatus also has a controller configured to control the well unit by receiving output signals from the first and second sensors and generating control signals according to a motor control sequence. This controller may be mounted to the structure of the pumping system to measure the strain experienced by the structure. The control signals may be transmitted to a motor control panel using a cable-less communications system. Preferably, the first sensor, the second sensor, and the controller are integrated into a single unit. In another embodiment, the pump control apparatus may be self-powered.
REFERENCES:
patent: 4409961 (1983-10-01), O'Hare
patent: 6189811 (2001-02-01), Rudy
patent: 6863827 (2005-03-01), Saraceno
Barnes Mark
Bergmann John C.
Booth Ken G.
Guillotte Mike
Hurst Gregg
Patterson & Sheridan L.L.P.
Tsay Frank
Weatherford / Lamb, Inc.
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