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 Special Core Analysis (SCAL)

Special core analysis instruments are utilized to measure rock and fluid properties at ambient and reservoir temperature and pressure conditions to reduce uncertainty in reservoir models. In other words, the equipment in this section could appropriately simulate the real reservoir conditions in order to evaluate the parameters required to model oil and gas reservoirs. Besides, all the hydrocarbon production mechanisms taking place in the reservoir can be studied here and eventually upscaled the results to the reservoir dimensions.

Available Services

  • Sample preparation

    •  Formation brine preparation using different salts
    •  Sample saturation
    •  Flooding to irreducible water saturation
    • Fluid viscosity and density determination at ambient pressure and any desired temperature condition.
    • Wettability restoration
  • Electrical properties

    • Formation resistivity factor (FRF), with cementation factor (m), under ambient and reservoir overburden pressure conditions.
    • Formation resistivity index (FRI), with saturation exponent (n), under ambient and reservoir overburden pressure and temperature conditions using reservoir dead oil or synthetic oil. (equilibrium or non-equilibrium methods)
    • Cation exchange capacity (CEC), by core conductivity method (Co/Cw).
  • Impact of overburden (stress) up to 10,000 psi

    • Determination of pore volume compressibility and porosity reduction.
    • Absolute and effective permeability determination.
  • Capillary pressure

    • Air-brine, air-oil and oil-brine using the porous plate technique samples, at ambient and reservoir overburden pressure and temperature conditions.
    • Air-brine, air-oil and oil-brine using the porous plate technique samples for 15 samples at the same time, at ambient and reservoir overburden pressure.
    • Ultra speed centrifuge technique (up to 13000 RPM) at any desired temperature.
    • Mercury injection capillary pressure (up to 60000 psi)
  • Pore size distribution

    • Mercury injection capillary pressure (up to 60000 psi)
  • Wettability

    • Amott cell, USBM (centrifuge), combined Amott/USBM
  • Relative permeability

    • Unsteady and steady state displacement methods by gas, water or oil
    • Drainage and imbibition full curves and end points determination at ambient and reservoir conditions, with dead and live oil
    • Residual gas saturation determination
  • Nuclear Magnetic Resonance (NMR)

    • Evaluation of property of pay formation
    • Porosity and permeability of core and cutting samples
    • Pore size distribution
    • Qv determination
    • T2 cutoff calculation and separation of movable (FFI) and Bound Fluids (BFV) parts and effective porosity (MPHI) and total porosity (MSIG) measurement on plug or cutting size samples.
    • Wettability characterization
    • Low resistivity reservoir study
  • Fluid Characteristics

    • Interfacial Tension measurement (IFT) at ambient and reservoir conditions
    • Sara analysis