Gas-oil relative permeability ratio is an important relationship in oil reservoir predictive calculations. A correlation has been developed from 107 gas-flood krg/kro tests on Venezuelan core samples.

Jul 11, 2022 · In running Module 2, we showed that the software can generate three-phase Kro-Krg-Krw-Pcgo-Pcow (complete saturation functions) for assumed/specific curves of data in (c).

The values plotted on the vertical and horizontal scales are the gas saturations at two different values of the gas-oil relative permeability ratio, krg/kro. The location of each intersection is found by substituting the chosen values of SLR, Sm, and krg/kro into Eq. 3 and solving for SL.

The publication by Wahl, Mullins and Elfrink of an empirical equation for krg/kro ratios is thus of interest since this equation is specifically stated to be based on the correlation of field measurements made on sandstone reservoirs.

kro:dr • drainage kro:il!lb • imbibition ArrollS are used on graphs pointing in the direction of wetting phase saturation change to indicate drainage and imbibition curves-as shown below.

A plot krg = f (krg /kro ) – for gas condensate reservoirs – highlights the relevant krg /kro range for the particular reservoir and provides a key tool for quantifying condensate blockage. Thus, we concentrate on the steady-state flowing conditions found in the nearwell region – typically up to 100 m away from the wellbore.

Feb 28, 2016 · As water saturation (Sw) decreases, relative permeability of oil (Kro) decreases and relative permeability of water increases (Krw). If water saturation is below connate water saturation (Swc), only oil will flow, but water will not flow (Figure 2).

Therefore the oil relative permeability is a function of two saturations, Kro (Sg, Sw). This further implies that water and gas three phase relative permeabilities depend only on their own saturations, i.e. the three phase quantities, Krw = Krw (Sw) and Krg = Krg (Sg).

Jan 1, 2015 · Relative permeability (kr) is one permeability value normalised to another permeability value, thus scaling relative permeability from zero (0) to a maximum of one (1). It is normal convention, especially in literature, to normalise values to an absolute permeability.

Jul 7, 2023 · The relative permeability ratio of oil to water (Kro/Krw) has an important influence on water cut (the proportion of water of the entire produced liquid) and, in turn, on the relationship between recovery and water cut (Jun et al. 2016).