To investigate the gas flow characteristics in tight porous media, a microscale lattice Boltzmann (LB) model with the regularization procedure is firstly adopted to simulate gas flow in three-dimensional (3D) digital rocks. A shale digital rock and a sandstone digital rock are reconstructed to study the effects of pressure, temperature and pore size on microscale gas flow. The simulation result...

determination of porosity, permeability, and pore volume compressibility of reservoir rocks and those variations with effective stress changes are of great interest in petroleum engineering. this paper has studied the influence of pore types of carbonate reservoir rocks on pore volume compressibility as well as klinkenberg permeability and porosity at different stress values. in the current stu...

Onno W. Akkerman, Richard van Altena, Theo Klinkenberg, Adrienne H. Brouwers, Alphons H.H. Bongaerts, Tjip S. van der Werf and Jan-Willem Alffenaar Dept of Pulmonology and Tuberculosis, University of Groningen, University Medical Center Groningen, Groningen, Dept of Cardiothoracic Surgery, University of Groningen, University Medical Center Groningen, Groningen, Dept of Nuclear Medicine and Mole...

Abstract To improve the understanding of gas transport processes in tight rocks (e.g., shales), systematic flow tests with different gases were conducted on artificial micro- to nanoporous analogue materials. Due rigidity these systems, fluid-dynamic effects could be studied at elevated pressures without interference poro-elastic effects. Flow narrow capillaries did not reveal any viscosity ano...

Tight gas reservoirs are characterized by single-phase (gas) or two-phase (gas and liquid) flow in extremely low-permeability, highly heterogeneous porous/fractured, and stress-sensitive rock. Gas flow in such tight formations is further complicated by other co-existing processes, such as Klinkenberg effect, non-Newtonian or non-Darcy flow behavior, due to strong interaction between fluid molec...

The effect of gas compressibility during flow through a porous medium modifies the governing equation for pressure, and low pressures, this leads to so-called Klinkenberg effect. Darcy’s law remains unchanged, accounting state parabolic pressure. increased rate at pressure nonlinearity equation. We present two broad approaches constructing exact solutions steady problem. First, geometric reduct...