Enhanced Oil Recovery from Polygonal Pores: Effects of Contact Angle

A. Davarpanah, S. Cox

Research output: Chapter in Book/Report/Conference proceedingConference Proceeding (Non-Journal item)


To understand how the recovery factor decreases in porous media through the trapping of hydrocarbons, it is necessary to be able to predict the capillary pressure in pore-scale networks. The capillary pressure is determined by the shape of the fluid interfaces, which strongly depends on the wettability of the pore walls and on the pore structure itself. We use the Surface Evolver to simulate the shapes of fluid interfaces when gas enters a one end of a channel, representing a model porous medium, containing a liquid phase (oil). We determine the shape of the interface between the two fluids (oil and gas) to give accurate measurements of the capillary pressure pc in porous media. By making small changes in the fluid volumes, we predict in a quasi-static manner the variation of capillary pressure during the process of oil mobilization by gas invasion. We consider a channel with an equilateral triangular and rectangular cross-section. Increasing the contact angle (θ) at which the wetting fluid (oil phase) meets the walls causes the capillary pressure to decrease until it reaches zero at a critical contact angle. The capillary pressure increases as the liquid phase is removed.

Original languageEnglish
Title of host publication82nd EAGE Conference and Exhibition 2021
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Number of pages5
ISBN (Electronic)9781713841449
ISBN (Print)9781713841449
Publication statusPublished - 2021
Event82nd EAGE Conference and Exhibition 2021 - Amsterdam, Virtual, Netherlands
Duration: 18 Oct 202121 Oct 2021

Publication series

Name82nd EAGE Conference and Exhibition 2021


Conference82nd EAGE Conference and Exhibition 2021
CityAmsterdam, Virtual
Period18 Oct 202121 Oct 2021


Dive into the research topics of 'Enhanced Oil Recovery from Polygonal Pores: Effects of Contact Angle'. Together they form a unique fingerprint.

Cite this