TECHNOLOGICAL PARAMETERS EFFECT ON THE EFFICIENCY OF A DEPTH OPERATING METHOD

Abstract

The oil production effectiveness depends on many parameters. The liquid flow rate of a well depends on the operating mode of the reservoir, the reservoir energy supply and the pressure distribution over the developed facility area. Geological parameters also have a great influence on the producing wells operational characteristics: the reservoir type, permeability and productivity coefficients, the degree of reservoirs heterogeneity by filtration and reservoir properties, and contamination of the well bottomhole zone largely determine the wells production capabilities. The next determining factor is the choice of the operating method, the pump type and its operating mode. Pump performance also depends on a number of factors. The oil physical properties, such as viscosity and density, determine the pump unit efficiency. Moreover, the larger these parameters, the lower the plants efficiency, the greater the load on the working elements of the pumps and the power consumption. The free gas content in the fluid produced from the well when it enters the pump also negatively affects the operation of most pumps types. In the pumps working cavities, a dead space is formed, filled with free gas, because of this, the pump productivity in the liquid decreases and additional loads on the installation arise due to vibration of the downhole equipment. At high values of the free gas content, a supply interruption can occur, which will entail a loss in the pump unit operability. When selecting pumping equipment for well operation, it is necessary to take into account all geological, hydrodynamic and oil production technical features from the considered development object. Only in this case is it possible to implement the process of efficient and cost-effective oil production from the reservoir when pumping units operate in optimal mode.