ВЛИЯНИЕ УСЛОВИЙ ЭКСПЛУАТАЦИИ НА НАРАБОТКУ ШТАНГОВЫХ ВИНТОВЫХ НАСОСНЫХ УСТАНОВОК

Abstract

In the article the results of the statistic analysis of the exploitation parameters of the oil well upon the pump operating time of the progressive sucker rod pumping units have been given. The following things were chosen as the exploitation parameters of the oil well: the hanger setting depth of the pump in the hole, the well head pressure, the frequency of the rotation rod string, the pump suction coefficient, water influx of the well products, dynamic level of the fluid in the well, annular gas pressure, fluid pressure in the pump suction, well products’ dynamic viscosity, the ratio of the maximum inclination angle to the depth at which this inclination occurs, the ratio of the maximum zenith angle to the depth of maximum zenith location, degrees/m. The sampling volume included 70 wells of Urmyshlinsk oil field, for which the dependences of the average pump operating time for the relinquishment of the well exploitation parameters have been constructed. For each parameter their change ranges in the sampling under consideration have been specified. By the results of the statistic analysis it has been defined that the proved correlations are the dependences of the pump operating time for the relinquishment of the rotation rod string frequency, the pump suction coefficient, water influx and viscosity of the pumped products. For the statistically significant factors such as the rotation frequency, the viscosity and the inclination angle, the analysis of their impact upon the stress deformed state of the rod string was carried out. The analysis performed of the stress - deformed state of the rod string has shown that first of all the average pump operating time for the relinquishment of the progressive beam pumping unit will be influenced by the rotation frequency the increase of which leads to the increase of the cycles of the bending stresses affecting the sucker rods as well as the well inclination angles influencing upon the bending stresses’ values.