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In this work a new perspective of the control of a sucker-rod pumping system is presented. In despite of the widely application of control strategies based on dynamometer cards recognition they present several limitations in the control and maintenance aspects. Nowadays, with the development of a new class of low cost downhole sensors, new control strategies could bee applied. In this work, a control framework using the bottom hole pressure combined with a variable speed drive (VSD) structure is proposed. A hardware in the loop simulation platform was developed to evaluate the measure of the bottom hole pressure contribution in a sucker-rod pumping control system.
Date of Conference: 15-18 Sept. 2008