Experimental study of the supercritical CO₂ diffusion coefficient in porous media under reservoir conditions.

ABSTRACT: Reliable measurement of the CO₂ diffusion coefficient in consolidated oil-saturated porous media is critical for the design and performance of CO₂-enhanced oil recovery (EOR) and carbon capture and storage (CCS) projects. A thorough experimental investigation of the supercritical CO₂ diffusion in n-decane-saturated Berea cores with permeabilities of 50 and 100 mD was conducted in this study at elevated pressure (10-25 MPa) and temperature (333.15-373.15 K), which simulated actual reservoir conditions. The supercritical CO₂ diffusion coefficients in the Berea cores were calculated by a model appropriate for diffusion in porous media based on Fick's Law. The results show that the supercritical CO₂ diffusion coefficient increases a

SUBMITTER: Lv J 

PROVIDER: S-EPMC6599780 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature