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Non-Monotonic Behavior of Capillary Pressure at the Entrance of Intermediate-Wet PoreNormal access

Authors: H. Rabbani and T. Daniel Seers
Event name: 81st EAGE Conference and Exhibition 2019
Session: Poster: Digital Rock Physics
Publication date: 03 June 2019
DOI: 10.3997/2214-4609.201901425
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 762.35Kb )
Price: € 20

Summary:
In this research, we reveal the transient behavior of capillary pressure as the fluid-fluid interface travels across the juncture between a converging and uniform capillary, via high-resolution CFD (Computational Fluid Dynamics) simulations. Simulations were performed at different wetting conditions (strong-wet and intermediate-wet) and capillary wall convergence angles. Our results demonstrate that as the angle of convergence increases, capillary pressure at the junction decreases commensurately. Moreover, in contrast to strong-wet conditions, the profile of capillary pressure at the converging-uniform capillary juncture under intermediate-wet conditions is highly non-monotonic, being characterized by a parabola-like form. In summary, this fundamental study offers new insights into the interface invasion protocol, and paves the way for the re-evaluation of capillary junction controlled interfacial dynamics.


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