Impact of natural convection and diffusion on variation of oil composition through a fractured model

Authors

Shahid Bahonar University of Kerman

Abstract

The first step to study oil reservoirs is determination of reservoir fluid composition in both horizontal and vertical directions. In this research, fluid composition distribution is investigated as a result of diffusion and natural convection in a naturally fractured model. A two-component single phase fluid and a rectangular two-dimensional fractured oil reservoir with a known temperature profile are used in this study. MATLAB software is exploited to solve governing equations, numerically. According to results, thermal diffusion has the greatest impact on the variation of fluid composition, followed by pressure and molecular diffusions, respectively. Moreover, it is found out that even a small convection would change the fluid composition distribution, considerably. Fluids tend to flow through the fracture due to its high permeability; therefore, a counterclockwise convective cell would flow in the reservoir.

Keywords


Volume 23, Issue 6 - Serial Number 6
Transactions on Chemistry and Chemical Engineering (C)
December 2016
Pages 2811-2819
  • Receive Date: 23 December 2015
  • Revise Date: 21 December 2024
  • Accept Date: 27 July 2017