Modeling Oil Recovery for Mixed Macro- and Micro-Pore Carbonate Grainstones.

ABSTRACT: In general, modeling oil-recovery is a challenging problem involving detailed fluid flow calculations with required structural details that challenge current experimental resolution. Recent laboratory experiments on mixed micro- and macro-pore suggest that there is a systematic relationship between remaining oil saturation (ROS) and the fraction of micro-pores. Working with experimental measurements of the pores obtained from X-ray tomography and mercury intrusion capillary pressure porosimetry, we define a digital rock model exemplifying the key structural elements of these carbonate grainstones. We then test two fluid-flow models: invasion percolation model and effective medium model. Although invasion percolation identifies the important impact of macro-pore percolation on permeability,

SUBMITTER: Xu Y 

PROVIDER: S-EPMC5575129 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature