An Extensive Study on Desorption Models Generated Based on Langmuir and Knudsen Diffusion

Although gas desorption is a known phenomenon, modeling fluid flow in tight reservoirs often ignores the governing effect, assuming that viscous transport predominant controller, resulting an erroneous prediction of mass and calculations. Thus, developing new model accommodating all major contributing forces such medium essential. This work introduces comprehensive suitable for unconventional reservoirs, including viscous, inertia, diffusion, sorption forces, to account transport. Based on Langmuir law Knudsen diffusion three models were generated compared with different using synthetic data. The was solved analyzed scenario cases, parametric studies conducted evaluate effect reservoir types MATLAB. Results show contribution mechanism increases reducing permeability lower viscosity flowing additional pressure drop up 10 psi quantified.