DORIN BADOIU, GEORGETA TOMA RESEARCH CONCERNING THE PREDICTIVE EVALUATION OF THE MOTOR MOMENT AT THE CRANKSHAFT OF THE CONVENTIONAL SUCKER ROD PUMPING UNITS It is well known that the variation on the cinematic cycle of the motor moment at the crankshaft of the conventional pumping units characterizes their proper functioning. In the paper it was developed a predictive calculation model of the motor moment at the crankshaft depending on the force at the polished rod. The estimation of the predictive model parameters has been done by minimizing a function that contains the calculus model errors. The experimental records have been processed with the program Total Well Management. The simulations have been performed with a computer program developed by the authors using Maple programming environment.
Keywords: sucker rod pumping unit, motor moment, predictive model