THE OIL TWO STEP SEPARATION PROCESS CONTROL SYSTEM MATHEMATICAL MODEL
Keywords:
gas, oil, two-stage separation, mathematical model, command signals, state variables.Abstract
The process of separation is an important stage in the preparation of oil for transportation of its main pipelines to consumers. For the separation of gas from oil used sealed separation systems.
To synthesize effective systems of automatic control of the separation process, it is necessary to create mathematical models in terms of "input-output". The analysis of literary sources showed that such models were created only for separate devices. In the two-stage separation there is a relationship and mutual influence between the processes of the first and second stages of separation.
Proceeding from the law of conservation of the amount of matter, we obtained a mathematical model of a two-stage separation process in the space of state variables with coordinates - vices and levels in the separators of the first and second stages, which are functions of the command signals of the regulators of level and pressure. In addition, the resulting mathematical model takes into account the effect of perturbations on the separation process, which is a consequence of the action on the object of a number of physical quantities on the part of the medium.
The obtained mathematical model can serve as the basis for synthesis of effective systems of control of the process of two-stage separation.
Downloads
References
2 Каспарьянц К. С. Процессы и аппараты для объектов промысловой подготовки нефти и газа: монография / К. С. Каспарьянц, В. И. Кузин, Л. Г. Григорян. – М.: Недра, 1977. – 254 с.
3 Theoretical and numerical analysis on pressure recovery of supersonic separators for natural gas / Yan Yang, Chuang Wen, Shuli Wang, Yuqing Feng : Applied Energy, Volume 132, 1 November 2014, (248-253)p.
4 Simulation of multiphase flow of the oil-water separation in a rotating packed bed for oil purification / Xiaojun Zhang, Yun Cheng, Songlin Nie, Hui Ji, Laiguo Liu / Mathematical Problems in Engineering 2013.
5 Intelligent system for diagnosis of a three-phase separator / Irina Ioniţă, Liviu Ioniţă / Brain : Broad Research in Artificial Intelligence and Neuroscience / 2016; 7(1) : 18 - 28p.
6 MRFT-based design of robust and adaptive controllers for gas loop of oil–gas separator / Hamdati Al Shehhi, Igor Boiko / Cogent Engineering : 2015; 2(1)
7 Structural optimization of downhole oil-water separator / Chuanwei Zhao, Haoyu Sun, Zengliang Li / Journal of Petroleum Science and Engineering, Volume 148, January 2017, 115-126p.
8 Numerical investigation of the effects of the central channel on the flow field in an oil–gas cyclone separator / Xiang Gao, Jinfeng Chen, Jianmei Feng, Xueyuan Peng : Computers & Fluids, Volume 92, 20 March 2014, Pages (45-55)p.
9 A mathematical model to calculate the separation efficiency of streamlined plate gas-liquid separator / Jianfei Song, Xuefei Hu : Separation and Purification Technology, Volume 178, 7 May 2017, (242-252)p.
10 Flow field of continuous phase in a vane-type pipe oil – water separator / Shi-ying Shi, Jing-yu Xu : Experimental Thermal and Fluid Science, Volume 60, January 2015, (208-212)p.
11 Devold H. Oil and gas production handbook. An introduction to oil and gas production / H. Devold - ABB ATPA Oil and Gas, 2006. – 84 p.
12 Тугов В. В. Разработка математического обеспечения оптимального проектирования и автоматического управления технологического процесса дегазации нефти: дис. … канд. техн. наук: 05.13.06 / Тугов Виталий Валерьевич. – Оренбург, 2002. – 208 с.
13 Джарагян М. А. Робастная стабилизация в локальных системах управления процессом подготовки товарной нефти: дис. … канд. техн. наук: 05.13.06 / Джарагян Максим Александрович. – СПб, 2005. – 168 с.
14 (7) Трубопровідний транспорт газу / [М. П. Ковалко, В. Я. Грудз, В. Б. Михалків та ін.]; за ред. М. П. Ковалка. – К.: Арена Еко, 2002. – 600 с.
15 СОУ 60.3-30019801-011:2004. Компресорні станції. Контроль теплотехнічних та екологічних характеристик газопере-качувальних агрегатів. – К.: ДК „Укртрансгаз”, 2004 – 117 с.
16 Казинер Ю. Я. Пневматические исполнительные устройства в системах автоматического управления / Ю. Я. Казинер, М. С. Слободкин. – М,: Энергия, 1972. – 72 с.
17 Горбійчук М. І. Моделювання об’єктів і систем керування в нафтогазовій промисловості: навчальний посібник / М. І. Горбійчук. – Івано-Франківськ: Факел, 1999.Ч. ІІI. – 1999. – 235 с.
18 Иткина Д. М. Исполнительные устройства систем управления в химической и нефтехимической промышленности / Д. М. Иткина. – М.: Химия, 1984. – 232 с.
19 Мильштейн Л. М. Нефтегазопромысловая сепарационная техника: справочное пособие / Л. М. Мильштейн, С. И. Бойко, Е. П. Запорожец; под ред. Л. М. Мильштейна. – М.: Недра, 1992. – 236 с.
.png)
