METHODS FOR IMPROVING OIL PRODUCTION EFFICIENCY USING PUMPING UNITS
СОРАП ҚОНДЫРҒЫЛАРЫН ҚОЛДАНУ АРҚЫЛЫ МҰНАЙ ӨНДІРУ ТИІМДІЛІГІН АРТТЫРУ ӘДІСТЕРІ
МЕТОДЫ ПОВЫШЕНИЯ ЭФФЕКТИВНОСТИ НЕФТЕДОБЫЧИ С ПРИМЕНЕНИЕМ НАСОСНЫХ УСТАНОВОК
Satybaldina D. Teshebayev N. Shmitov N. Kissikova N. Zakarina A.
2026National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2026#2026Issue 1303 - 317 pp.
The article examines methods for improving the efficiency of pumped oil production using low-power equipment–pendulum-type sucker-rod pumping units used in the mechanized operation of mature and low-rate oil fields. These units are characterized by high reliability, simplicity of operation and repair, and effective performance in high-viscosity oil production and increased water cut. Changes in the hydrodynamic and technological characteristics of wells at different stages of operation require adaptive control of the pumping equipment. The aim of the study is to develop and investigate an automatic control system that coordinates reservoir inflow with pumping unit capacity and ensures an energy-optimal well operating regime. The controlled object is a single well equipped with a pendulum-type sucker-rod pumping unit. The paper proposes a mathematical description of downhole fluid-level dynamics, taking into account the relationship between the dynamic fluid level, the position of the oil–water interface, and pump capacity. Two variants of the control-system structure are considered, corresponding to early and late stages of well operation that differ in the degree of produced water cut. For wells at the early stage, a single-loop stabilizing control system with a proportional (gain) controller is synthesized; static accuracy is provided by the integrating properties of the well as the control object. For wells at the late stage, a two-loop control structure is developed, based on regulating the dynamic level and maintaining a minimum allowable “safety oil layer” that prevents water from entering the pump, thus limiting premature water breakthrough into the intake. The effectiveness of the proposed algorithms is confirmed by Simulink simulations. It is shown that the developed automatic control system provides stable operation of the pumping equipment under varying inflow conditions, reduces energy consumption, and increases the efficiency of operating low-rate and high-water-cut wells, confirming its practical applicability in oilfield production.
oil production , oilfield , pump performance , sucker rod pumping units , well water cut , wellbore fluid
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L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Al-Farabi Kazakh National University, Almaty, Kazakhstan
L.N. Gumilyov Eurasian National University
Al-Farabi Kazakh National University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026