Abstract
Based on the analysis of the negative torque of the common beam pumping unit resulting in lower system efficiency, energy consumption, load alternating amplitude, poor working conditions, the theory of pumping unit with positive torque is proposed, a dynamic model is established, a structure is invented, constant power of intelligent control technology and electrical-line monitoring evaluation technology are studied and positive torque constant power pumping system supporting technology is formed. What's more, a prototype is developed and carried out for laboratory and field tests, developing the data of the positive torque and constant power in the field work. These tests prove the correctness of the theory and the feasibility of the technology. A number of indicators of the installed power, energy consumption size and weight have reduced over 30% compared with the original wells, obtaining good effect of a significant energy saving with positive pumping torque.
Published Version
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