185 Oil and gas engineering and technologies

Master

Optimization of the operation of electric centrifugal pumping units in the exploitation of gas-saturated wells

Krutoguzhenko, M.D.

The master's thesis is devoted to improving the efficiency of oil well operation with electric centrifugal pumps by overcoming the harmful effects of tubing gas.
Section 1 analyzes scientific sources, patents, and market solutions. It systematizes the advantages of jet pumps, in particular their modularity, resistance to aggressive environments, and ability to transport heterogeneous flows. It establishes the prospects for their use as an alternative to inefficient traditional methods.
Section 2 contains an analysis of the operation of EPCS and factors limiting their productivity. It has been determined that a free gas content of more than 25% leads to a sharp decrease in pressure and a breakdown in supply. The feasibility of using gas separators, dispersers, and tandem pump-ejector systems to stabilize operation is justified.
Section 3 develops a mathematical model and algorithm for calculating the tandem “ECN-ejector” system. The optimal geometric parameters of the ejectors (the ratio of the nozzle and mixing chamber diameters) are selected for three wells. The practical application of the proposed method confirmed an increase in oil flow rate by an average of 3.2 t/day, and for individual wells – up to 7.1 t/day.

насос

ежектор

газосепаратор

дебіт свердловини

well drilling

pump

ejector

gas separator

well flow rate