Digital Core Analysis of Capillary Pressure in Sandstone

Ajeng P.P. Oktaviany, Astra Agus Pramana DN, Utami Farahdibah, Dara A Maharsi, Wenny Astuti, Muhammad A Gibrata

Abstract


This research aimed to obtain the petrophysical parameters of the capillary pressure of a sandstone
from 3D modelling of high-resolution rock images. By integrating a number of 2D slice results, a plot of capillary
pressure vs water saturation was built. When performing digital simulations using 512 x 512 x 512 pixels, the
effect on the resulting image was clearly seen using interactive thresholding. The obtained porosity was 29.5%
while the permeability was obtained through iteration as 3942 mD, a quite large value since it is a synthetic core.
Meanwhile, at the depth of free water level of 984 ft, the capillary pressure is found to be 167.36 psi with water
saturation at 4%.


Keywords


capillary pressure, sandstone, digital analysis

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DOI: https://doi.org/10.29017/SCOG.45.3.1260

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