Relative Permeability

Applications include prediction of multi-phase fluid flow behavior through reservoir rock and understanding rock fluid interactions such as wettability and trapping.

Ask an expert today to learn more about how Relative Permeability can help you: 

  • Understand how fluid flow behavior is affected by pressure, temperature, wettability and rock properties
  • Understand CO2 injectivity and the effects of hysteresis  
  • Model fractional flow with the proprietary RelK Toolkit and Database

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Flow Studies

Relative Permeability

Our team can provide the proper sample restoration and relative permeability protocol to provide accurate data for reservoir simulators inputs.

Steady State

Co-injection of two (or more) immiscible fluids at various fractional flows until steady state equilibrium is achieved.  Saturations are determined using in-situ saturation monitoring (ISSM) and effective permeabilities for each phase at a given saturation are determined using Darcy’s Law.  

Unsteady State

Displacement of the mobile saturation phase with a single immiscible fluid at a constant rate.  This method defines breakthrough recovery and uses post break-through volumetric and endpoint recovery data for calculation of the relative permeability.


Displacement of the mobile saturation phase with a single immiscible fluid using a single speed centrifuge.  This method provides data at lower saturations and defines the relative permeability of the displaced phase only. 

Stationary Liquid

This is the preferred approach for determining relative permeability in low permeability reservoirs, especially when traditional methods may not yield accurate results. This method effectively simulates reservoir fluid states by allowing one fluid phase to flow while keeping the other phase stationary or immobile. 

Relative Permeability Database and Toolkit

In cases when measured data is unable to be acquired or is needed for fast-track reservoir simulations, our Relative Permeability database provides analog data gathered from thousands of tests that can be utilized to estimate residual oil, relative permeability, water cut, and recovery factors. 

Explore the RelK Database