查看文章

In this paper some results concerning the calculus of the variation on a cinematic cycle of the motor moment at the cranks shaft for a pumping unit with conventional type geometry are presented. The calculus of the motor moment is based on the expressing of the dynamic equilibrium in instantaneous powers of all the forces and moments that work on the component links of the mechanism of the sucker rod pumping unit. Finally, the simulation results obtained in the case of a C-640D-365-144 pumping unit are compared with the measurements results carried out at a well in exploitation.