Work

Numerical Simulation of Non-Darcy Flow in Naturally Fractured Tight Gas Reservoirs for Enhanced Gas Recovery

Year: 2024

Type: article

Abstract: In this work, we analyze non-Darcy two-component single-phase isothermal flow in naturally fractured tight gas reservoirs. The model is applied in a scenario of enhanced gas recovery (EGR) with the possibility of carbon dioxide storage. The properties of the gases are obtained via the Peng–Robinson equation of state. The finite volume method is used to solve the governing partial differential equations. This process leads to two subsystems of algebraic equations, which, after linearization and use of an operator splitting method, are solved by the conjugate gradient (CG) and biconjugate gradient stabilized (BiCGSTAB) methods for determining the pressure and fraction molar, respectively. We include inertial effects using the Barree and Conway model and gas slippage via a more recent model than Klinkenberg’s, and we use a simplified model for the effects of effective stress. We also utilize a mesh refinement technique to represent the discrete fractures. Finally, several simulations show the influence of inertial, slippage and stress effects on production in fractured tight gas reservoirs.

Source: Gases

DOI: 10.3390/gases4030015

Authors: João Gabriel Souza Debossam, Mayksoel Medeiros de Freitas, Grazione de Souza, Helio Pedro Amaral Souto, Adolfo Puime Pires

Institutions: Universidade do Estado do Rio de Janeiro, Instituto Politécnico do Rio de Janeiro, State University of Norte Fluminense

Language: English

Topic: Hydraulic Fracturing and Reservoir Analysis

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,137

Funder: Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro