
Kansas Geological Survey Openfile Report 200331 
Since relative permeability end point saturations change with permeability (e.g., “irreducible” water saturation changes with permeability), the relative permeability curves also change with absolute permeability. Relative permeability curves for any given permeability were modeled using Coreytype equations where Swi was obtained from Pck relations and the average absolute permeability values assigned. Exponent m and n values were initially obtained from measured data and were modified during simulation to reproduce lease production data.
kro = _{1}(1S_{wD})^{m}
krw = _{2} _{wD}^{n}
S_{wD} = (S_{w}S_{wi})/(1S_{wi}S_{orw})
For moldicporosity Mississippian rocks residual oil saturation to waterflood also changes with permeability and/or Swi following the general trend: Sorw=(1(Swi+0.5)). Initial pseudoSwi values were assigned to each layer using Pck relations discussed.
Wellington West dolomites exhibit a general increase in pore body size with increasing k as shown by Nuclear Magnetic Resonance T2 times.

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