«Oilfield engineering»

Selection of producing wells’ optimal technological operational mode in the field of the West Siberian region

UDC: 622.276:553.98
DOI: -

Authors:

¹ LUKOIL-Engineering, Tyumen, Russia

Keywords: bottomhole pressure, drawdown control, reservoir drawdown, hydrodynamic modeling, operational models optimization, water-flooding system, oil recovery factor, feasibility study

Annotation:

The authors of the article analyze the pressing problem of optimizing operational modes for production wells in the frames of oil fields development. Practical observations prove the fact that actual reservoir drawdown parameters often deviate from design values, significantly impacting hydrocarbon production efficiency and project viability. In the course of the study special attention was paid to solving the problem of determining optimal reservoir drawdown values, being a key aspect of fields development monitoring. The authors revealed the factors limiting maximum permissible reservoir drawdown levels and presented the results of a series of numerical simulations using a hydrodynamic model, which allowed establishing correlation dependences between fluid flow rate and reservoir drawdown value. These data formed the basis of recommendations for optimizing well operational modes. A distinctive feature of the hydrodynamic model is the fact that each estimation scenario utilized different reservoir drawdown values and target group assignment methods, including water-flooding cells and injection distribution among production wells to compensate fluid withdrawals. The study included a comprehensive analysis of the water-flooding system using modern modeling instruments as well as a feasibility study based on a combination of calculated data. It allowed for an assessment of the economic feasibility of reservoir drawdown control.

The practical value of this study lies in improving well monitoring and control methods, thus contributing to more accurate oil production forecasting and oil recovery increase. The purpose of the work is to improve the efficiency of oil fields development by scientifically substantiating optimal reservoir drawdown values. The study focuses on an oil field in the Western Siberia. The proposed approach can be used as a methodological basis for further research in this field.

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