Sharif University of Technology Scientia Iranica 1026-3098 17 2 2010 02 01 Effects of Rock Permeability on Capillary Imbibition Oil Recovery from Carbonate Cores 3381 EN I. Goodarznia Department of Chemical and Petroleum Engineering,Sharif University of Technology H. Darvishi Department of Chemistry,Sharif University of Technology F. Esmaeilzadeh Department of Chemistry,Sharif University of Technology Journal Article 2011 01 03 In order to investigate the feasibility and eects of core permeability on capillary imbibition recoverable oil from carbonate cores, some laboratory tests were carried out at the EOR research laboratories of Sharif University, Iran. Outcrop rocks with dierent permeabilities were taken away from a recognized outcrop and used in these experiments. Special core analysis tests were run on two core samples to nd out relative permeability and end point saturations. Wellhead separator oil and gas samples were collected and recombined to a reservoir gas - oil ratio. A core ooding system with a capability of free and forced imbibition testing was designed and installed. A number of free and forced imbibition tests with dierent cores under reservoir conditions were conducted. The results of the tests revealed that capillary imbibition is an almost fast process at laboratory scale and the higher permeable cores will imbibe more easily. A good correlation could be obtained when the ratio of recovery factor to ultimate recovery factor versus a denite function of time was plotted. From these experiments, it concluded that an up scaled relation can be perceived for very low permeable cores, the testing of which may take too long. https://scientiairanica.sharif.edu/article_3381_ed9d57f542bcc9b15a38b448b23baaad.pdf