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  2. Relative permeability - Wikipedia

    en.wikipedia.org/wiki/Relative_permeability

    If we scale phase permeability w.r.t. absolute water permeability (i.e. =), we get an endpoint parameter for both oil and water relative permeability. If we scale phase permeability w.r.t. oil permeability with irreducible water saturation present, endpoint is one, and we are left with only the endpoint parameter. In order to satisfy both ...

  3. List of dimensionless quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_dimensionless...

    magnetostatics (ratio of the permeability of a specific medium to free space) Relative permittivity = electrostatics (ratio of capacitance of test capacitor with dielectric material versus vacuum) Specific gravity: SG (same as Relative density) Stefan number: Ste

  4. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    A phase diagram in physical chemistry, engineering, mineralogy, and materials science is a type of chart used to show conditions (pressure, temperature, etc.) at which thermodynamically distinct phases (such as solid, liquid or gaseous states) occur and coexist at equilibrium.

  5. TEM-function - Wikipedia

    en.wikipedia.org/wiki/TEM-function

    Furthermore, TEM-function in two-phase flow systems is an extension of RQI (rock quality index) for single-phase systems. [ 1 ] Also, TEM-function can be used for averaging relative permeability curves (for each fluid phase separately, i.e., water, oil, gas, CO 2 ).

  6. Darcy's law - Wikipedia

    en.wikipedia.org/wiki/Darcy's_law

    The Darcy's constitutive equation, for single phase (fluid) flow, is the defining equation for absolute permeability (single phase permeability). With reference to the diagram to the right, the flow velocity is in SI units (/), and since the porosity φ is a nondimensional number, the Darcy flux , or discharge per unit area, is also defined in ...

  7. Permeability (materials science) - Wikipedia

    en.wikipedia.org/wiki/Permeability_(Materials...

    A practical unit for permeability is the darcy (d), or more commonly the millidarcy (md) (1 d ≈ 10 −12 m 2). The name honors the French Engineer Henry Darcy who first described the flow of water through sand filters for potable water supply. Permeability values for most materials commonly range typically from a fraction to several thousand ...

  8. Maxwell's equations - Wikipedia

    en.wikipedia.org/wiki/Maxwell's_equations

    This 3D diagram shows a plane linearly polarized wave propagating from ... and relative permeability, μ r, the phase velocity of light ... number density, ...

  9. Phase (matter) - Wikipedia

    en.wikipedia.org/wiki/Phase_(matter)

    The number and type of phases that will form is hard to predict and is usually determined by experiment. The results of such experiments can be plotted in phase diagrams. The phase diagram shown here is for a single component system. In this simple system, phases that are possible, depend only on pressure and temperature. The markings show ...