Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL SIMULATION OF NON-ISOTHERMAL FLOW IN NATURALLY FRACTURED OIL RESERVOIRS USING A ONE-EQUATION MODEL
Submission Author:
Juan Diego dos Santos Heringer , RJ
Co-Authors:
Juan Diego dos Santos Heringer, Paulo de Tarço Honorio Junior, Grazione de Souza, Helio Pedro Amaral Souto
Presenter: Juan Diego dos Santos Heringer
doi://10.26678/ABCM.COBEM2019.COB2019-1424
Abstract
This work aims to simulate three-dimensional heavy oil flow in a naturally fractured reservoir with heater-wells. The heterogeneities of the reservoirs have significant relevance in the dynamics of the flow in porous media and should be considered when simulating oil reservoirs. Naturally fractured reservoirs (NFRs), for example, may have different temperature and pressure settings, depending on the permeability and porosity fields. In this work, mass, momentum and energy balances, as well as correlations for rock and fluid properties, are used to obtain the non-linear partial differential equations for the fluid pressure and fluid and rock temperatures. The governing equations are then discretized using the Finite Volume Method (FVM) and solved along with linearization and an operator splitting. As a consequence, three subsystems of linearized algebraic equations arise and are solved using the Conjugate Gradient Method. We also use a grid refinement around the wellbores and the fractures to better represent the physical phenomena in those regions. The results obtained with the governing equations for the fluid flow and the one-equation model for the heat transfer show the suitability of heater-wells application in naturally fractured reservoirs.
Keywords
Finite volume method, heavy oil, naturally fractured reservoir, Non-Isothermal Flow
