IMPROVEMENT OF THE DELUMPING METHOD IN ORDER TO OBTAIN DETAILED CHARACTERISTICS OF THE FLUID
Baibekova A. Ismailova J. Delikesheva D. Abdukarimov A. Kaidar A.
2024Technology Center
Eastern-European Journal of Enterprise Technologies
2024#4Issue 6(130)29 - 37 pp.
In compositional modeling, the phase characteristics and behavior of reservoir fluids are calculated using the equation of state. To simplify the calculations and speed them up, the components of the heptane plus fraction (C7+) are grouped into pseudo-components. However, after this procedure, the results of compositional modelling of the reservoir containing the pseudo-components need to be delumped so that they can be used in surface models. It follows from this that the problem lies in the fact that the grouped composition cannot be applied to the modeling of ground structures. The object of the study is Kazakhstani oil, on the example of which a detailed component composition was obtained by analytical delumping based on reduction parameters. In laboratory conditions, the component composition of oil, and other fluid properties were determined. The study presents the results that prove the importance of applying the delumping algorithm in the context of compositional modeling. The results obtained analytically correspond quite accurately to the numerical calculations of the PVTsim software and laboratory experiments. A comparison of existing methods showed a difference of 5 %, which suggests that delumping is an excellent method for describing and obtaining a detailed composition of the hydrocarbon mixture. In practice, the results of the detailed composition of hydrocarbons can be used for the design of refineries. Also, the findings from this research can enhance the planning and design of surface facilities, particularly when developed under reservoir conditions where the pressure exceeds the saturation pressure Copyright
binary interaction parameters , compositional modeling , delumping , equation of state , flash , K-value , Kazakhstani oil , lumping , plus fraction , pseudo-component
Text of the article Перейти на текст статьи
School of Energy & Petroleum Industry, Kazakh-British Technical University, Tole-bi str., 59, Almaty, 050000, Kazakhstan
Department of Petroleum Engineering, Satbayev University, Satpayev str., 22a, Almaty, 050013, Kazakhstan
School of Energy & Petroleum Industry
Department of Petroleum Engineering
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026