Detailed Modelling of Hydrocarbonaceous Media Separation Process

Abstract

This paper presents the results of a detailed study of the separation process in the range of characteristic values temperature (Т ≅ 0 ÷ 70 °C) and pressure (P ≅ 50 ÷ 700 kPa). The critical analysis of hydrocarbonaceous media separation process problem is made within functioning processing equipment on objects of the “Vyngapurovskoe” oil field in Russia. Modelling of first stage separation process is illustrated from data of reservoir fluid with detailed characteristic of evolution some components concentration into off-gas in dependence of temperature and pressure. Recommendations to the calculation of the component composition of hydrocarbonaceous fluids under the provisions of equilibrium thermodynamics using the model of Peng-Robinson are extradited. It has been established that the heavy hydrocarbons (С4+higher) concentration decreasing into off-gas theoretically could be achieved up to 48.41%.

Separation Features in Hydrocarbon Media at Thermobaric Regimes of Petroleum Preparation Devices Functioning

“…The last articles [2][3][4][5] were devoted to the research of multistage separation process for preliminary preparation of crude petroleum and oil using computer simulation and modeling. The entrainment saving of liquid oil components into off-gases by optimizing thermobaric conditions of the separation was obtained.…”

“…The entrainment saving of liquid oil components into off-gases by optimizing thermobaric conditions of the separation was obtained. The calculations have showed (see, for example [2][3][4][5]) that the optimization of thermobaric conditions allows reducing the droplet entrainment in the first separator down to 40-48%, especially in the intensive evolution of gas zone. The optimization of thermobaric conditions for specific component composition of well fluid is very complicated and complex.…”

“…It will optimize the separation process and reduce losses at the stage of preliminary preparation of oil. Also, in [4,5] the results of separation process research was presented at the thermobaric conditions T ≅ 0-70 °C, P ≅ 50-700 kPa. In particular, it has been showed that non-linear relations of component concentration in the gas mixture are observed with pressure and temperature changes.…”