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Precision Petrophysical Analysis Laboratory (PPAL) ... Schematic of PPAL . Capabilities •Simulating reservoir conditions such as pore pressure, overburden pressure, and temperature

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  • Precision Petrophysical Analysis Laboratory (PPAL)

  • Precision Petrophysical Analysis Laboratory

  • Schematic of PPAL

  • Capabilities

    • Simulating reservoir conditions such as pore pressure, overburden pressure, and temperature.

    • Simulating steady state gas flow through the core plug.

    • Measuring permeability with accuracy of nano-darcy.

    • Measuring pore volume(~0.1% accuracy for porosity)

    • Instantaneous pressure recording with accuracy of 0.001 psi.

  • Core Holder Assembly and Core Plug Sample

  • Permeability Measurement

  • Flow Rate Measurement He - No Sorption

  • Flow Rate Measurement CO2 - Sorption

  • Permeability Measurements Marcellus Shale

  • Klinkenberg Correction

  • Pore Size Distribution Obtained Using Nitrogen Adsorption At 77ok

    0.00E+00

    2.00E-05

    4.00E-05

    6.00E-05

    8.00E-05

    1.00E-04

    1.20E-04

    1.40E-04

    1.60E-04

    1.80E-04

    1 10 100 1000 10000

    d V

    p /d

    D p

    Pore Diameter A°

    The Average Pore Size is 3 Nanometer.

  • Normalized Permeability vs. Knudsen Number

    Kn < 0.001 Continuum Flow

    0.001< Kn

  • Double-slippage Correction

    y = 8E+06x + 154.3 R² = 0.9603

    y = 5E+06x + 155.51 R² = 0.9705

    y = 2E+06x + 124.06 R² = 0.9731

    y = 5E+06x + 122.83 R² = 0.9956

    0

    100

    200

    300

    400

    500

    600

    700

    800

    900

    0 0.00005 0.0001 0.00015 0.0002 0.00025

    P er

    m ea

    b ili

    ty , n

    D

    Inverse Pressure Squared, Psia-2

    Helium

    Nitrogen

    CO2-Adsorption

    CO2-Desorption

  • Effect of Net Stress on the Porosity Measurements with N2

  • Effect of Net Stress on the Permeability Measured by N2 and CO2