Porosity-permeability plot

Fig. 3, Porosity-permeability plot of cataclastic fault rocks developed from sandstones with low (<6%) clay contents. Note the values extend over six orders of magnitude.

Figure 2.16 shows a second example for a porosity-permeability plot. From the porosity-permeabihty plot on the right the regression equations can be derived ... 

FIGURE 2.24 Schematic porosity-permeability plots for clastic and carbonate rocks. Based on figures from Nelson (1994, 2005) and Lucia (1999, 2007). 

Fig. 3.13b. Impact of diagenetic mineral cement transformation on reservoir quality, Saharan Basins. A Diagram illustrating the impact of the illitization on reservoir quality. B Porosity and C permeability plots against illite content in clay cement in reservoir rocks from Hassi Messaoud ( ) and Hassi R Mel (o) fields. Reservoir rocks involved in the correlations were selected a manner, that their other petrographic features are similar or very near, e.g. average grain size M.D. = 0.2-0.4 mm, clay cement content = 10-15% (of total mass of the rock), with very little or no carbonate cement...

The manufacture of DPMs based on infiltrated molten carbonates in the porosity of perovskite membranes constitutes the most recent and innovative application of perovskites for CO2 capture. Since the first studies reported by Wade and coworkers [33] and Lin and coworkers [34], many efforts have been made to develop stable high-flux membranes for CO2 separation. Table 39.5 collects the most remarkable results, whereas Figvue 39.12 plots the permeance versus permeability plots for dual-phase perovskite-carbonate materials compared with low-temperature CO2 separating membranes (zeolites and MOFs/ZIFs). 

The addition of ethanol increases the penetration distance of the surfactant this is shown for various porosities in Figure 9 where the ratio is plotted as a function of the permeability for a... 

Core analysis data are also plotted on a conventional log-linear diagram (Fig. 4). There is considerable scatter in the data and a wide range of permeabilities for a given porosity. This probably means that there is more than one control on porosity, and thus permeability, evolution. 

Fig. 8. Porosity versus air permeability for Norphlet sandstones from Mobile Bay. The data plotted are from the reservoir interval and are divided according to stratification type (determined by examination of core). Tight-zone samples have porosity <8% and air permeability < 1 mD regardless of stratifieation type and are excluded from this plot.

FIGURE 4 Graph of porosity plotted against permeability showing the reservoir characteristics of the different types of pore systems. [From Selley, R. C. (2000). Applied Sedimentology, 2nd ed., Academic Press, San Diego.]... 

Figure 1. Plots of permeability, Ar, versus intercommunicating (open) porosity, specific surface area (per unit of pore volume) and irreducible water saturation, are considered in the data fitting, showing both the measured and fitted data for VuktyPskiy gas-condensate deposit, USSR. 

Flow experiments were conducted in a Berea sandstone core to determine the flow characteristics of a 1,000-ppm solution of xan-than in 1% NaCl. The core was 2x2x 12 in., porosity was 0.197, and permeability to brine was 312 md. Polymer was injected a constant injection rate until the pressure drop stabilized. Plow rates were varied between 0.000138 and 0.4666 cmVs. Table 5.62 summarizes the experimental data. Determine the apparent viscosity as a function of Darcy velocity and plot the data. Correlate the data with... 

Make a plot of absolute permeability versus porosity for a 50 micron pore size using the Carman-Kozeny relationship. 

Figure 2.15 shows the graphic presentation in a plot of logarithmically scaled permeability as a function of linear (left) or logarithmically scaled (right) porosity—the so-called poro-perm plot . 

FIGURE 2.19 Permeability versus porosity plot for shaly sands with three different clay types pore-filling kaolinite, pore-lining chlorite, and pore-bridging illite. Redrawn after Neasham (1977). 

The paper of Neasham (1977) allows an insight (Fig. 2.19) and it demonstrates in a permeability versus porosity plot the influence of clay t5tpe and morphology. 

Bang et al. (2000) published experimental data from a North Sea well interval and plotted vertical permeability versus horizontal permeability (Fig. 2.20). The reservoir is a homogeneous sand body with generally high porosities (up to 30%) . 

Following the rock-fabric classification, Jennings and Lucia (2001) developed a systematic plot presentation for non-vuggy carbonates and subdivided limestone and dolomite into three classes with rock-fabric numbers. The generalized carbonate permeability model provides a relationship between permeability, interparticle porosity, and rock-fabric number ... 

Muller-Huber (2013) investigated low porous carbonate rocks from Austria. Figure 2.23 shows a plot of permeability versus porosity. The measured permeabilities range from slightly less than 0.05 up to 1190 md. In elastics, permeability depends strongly on porosity, fri craitrast, the permeability of carbonates is controlled not solely by porosity, but also by the pore and fracture geometry. 

Fig. 7. Pore quality plotted as a function of various parameters, a) Pore quality vs. surface area/cc of pore (measured by single point BET technique) for MWX samples, b) Pore quality vs. porosity for all samples, c) Pore quality vs. permeability for all samples.

Based on Equation (2), the permeability can be calculated by plotting t vs. s. The slopes of the cmves are inverse proportion to the permeability of the GF mats. For predicting the changed porosity of the GF mats after spraying the CNFs, the following equation s were used ... 

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