[12] Patent
[11] Patent No.:GC0007558  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/125983
Date of the Decision to Grant the Patent:12/Apr/2018

[21] Application No.:GC 2012-21720

[22] Filing Date:9/7/2012

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventor: Ronald G. PETERSON

[73] Owner: UNICO LLC, 3725 Nicholson Road, Franksville, Wisconsin 53126-0505, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C




Int. Cl.: E21B47/047; E21B43/20; G01F23/00; E21B43/12; F04B47/00 (2006.01)

[56] Cited Documents:

-US 2004062658 A1 (BECK THOMAS L [US] ETAL) 1 April 2004
-US 4718824 A (CHOLET HENRI [FR] ET AL)12 January 1988
-LEO GIANGIACOMO ET AL: OptimizingPumping Wei] Efficiency With SmartFluid-Level ControllerTechno1ogy“,28 March 1999
Examiner: Eng. Mohammed A. AlShamrani

[57] Abstract: A method and apparatus for operating a pumping system includes the following: determining a motor operating parameter of a motor configured to drive a pump in a well; determining a pump operating parameter of the pump based on the motor operating parameter; operating the pump in a first mode to determine pump characteristics at a desired fluid level; generating first mode output data based on operation of the pump in the first mode; operating the pump in a second mode based on the first mode output data; determining an estimated fluid level in the well based on the motor operating parameter, the pump operating parameter and the first mode output data; and adjusting the pump speed based on the estimated fluid level in order to maintain a desired fluid level.
No. of claims: 14     No. of figures: 10


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