Abstract
Establishing and then solving the movement equation of the mechanism of the conventional sucker rod pumping units allows determining the variation on the cinematic cycle of the angular speed of the cranks as a dynamic response to the motor and resistant actions on the component elements. The evaluation as accurate as possible of the dynamic response depends on a more precise determination of the variation on the cinematic cycle of the synthesis parameters that occur in the movement equation of the mechanism of the pumping units. In the paper is established the movement equation of the mechanism of the conventional pumping units and are presented a series of results regarding the variation on the cinematic cycle of some synthesis parameters in the case of the mechanism of a C-640D-305-120 pumping unit. Experimental records have been processed with the Total Well Management program and the simulations have been performed with a computer program developed by the author using the Maple programming environment.
Highlights
The experimental records processed with the programTotal Well Management [12] have been obtained from a well serviced by a C-640D-305-120 pumping unit manufactured by Lufkin [13]
Establishing and solving the movement equation of the mechanism of the conventional sucker rod pumping units allows determining the variation on the cinematic cycle of the angular speed of the cranks as a dynamic response to the motor and resistant actions on the component elements
Regarding the mechanism of the pumping units, from the perspective of their dynamics, the study of the movement equation is extremely important for highlighting the dynamic response to the motor and resistant actions on the component elements [9-10]
Summary
Total Well Management [12] have been obtained from a well serviced by a C-640D-305-120 pumping unit manufactured by Lufkin [13]. For establishing the variation on a cinematic cycle of the corresponding to the weight reduced forces of mtheomcoemntpoMnergendt elements of the mechanism of the conventional pumping units that appears in the movement equation were used the records concerning the variation of the force at the polished rod and of the motor moment at the crankshaft for the stroke 70 1) and the variation of the angular speed of the cranks expressed in rot/min during the stroke
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