Sentence examples for multiples of permeability from inspiring English sources

Given same fracture size, the expanded multiples of permeability are inversely proportional to permeability.

It can be seen from Fig. 6 that the expanded multiples of permeability after hydraulic fracturing of the low-permeability layer increase gradually as fracture size increases.

During the process of layer recombination, the expanded multiples of permeability of layers with artificial fractures could be determined according to its permeability and fracturing size.

This is expressed by permeability contrast of the two layers, that is, the expanded multiples of permeability after hydraulic fracturing of the low-permeability layer.

When the permeability of the second layer is 1, 5 and 10 × 10−3 μm2, respectively, and the fracture sizes are 35, 45, 50, 55, 60, 65 and 75%, respectively, we got the corresponding expanded multiples of permeability with the above same steps.

In this case, the expanded multiple of permeability is 2.6.

The larger the size of the hydraulic fracture and the lower the layers' permeability will be, the larger will be the expanded multiple of permeability after fracturing.

The change multiple of permeability can be determined by R_{K} = frac{K}{{K_{0} }} = frac{{R_{{K{ hbox{max} }}} }}{{F_{text{DGmax}}^{2} }}F_{text{DG}}^{2}, (5 where K 0 is the initial permeability of every grid, R Kmax is the largest change multiple of permeability, F DGmax is the largest scour pore volume multiple.

A comprehensive model describing the variability of reservoir macro-parameters is proposed using a statistical analysis technique, namely the relationship of change multiple of porosity R ϕ, change value of irreducible water saturation D swc, change value of residual oil saturation D sor, change multiple of ratio of endpoint relative permeability R kr, and change multiple of permeability R k.   3.

The procedures that need to be accomplished at every time step of reservoir numerical simulation can be summarized as follows: (1) calculate the scour pore volume multiple of injected water; (2) calculate the change multiple of permeability R K with Eq. (5); (3) calculate the average permeability change multiple of all grids.

Open image in new window Fig. 6 Expanded multiples of average permeability.