FINAL EXAM - Special guest

Resovoir Modeling

Allows us to see flow underground

Routine Core Analysis (RCA)

Basic measurements

Special Core Analysis (SCA)

Advanced test to capture dynamic and rock-fluid parameter

Rock Sample Sizes

• Whole cores

• Standard plugs (2-3” long. 1.5” d)

• Long plugs

• Chips

• Powder

Measurement of Porosity

• Core samples → limited wells

• Wireline logs

Helium Porosimetry

• Boyle’s Law → P1V1 = P2V2

• Helium behaves ideally and doesn’t get absorbed

• Measures grain or matrix volume

Permeability

• Absolute → in single phase

• Effective

• Relative → effective/absolute

Interfacial Tension

Force that acts along boundary of two
immiscible fluids bc
molecules in each fluid prefer to stay
with their own kind

Wettability

• Tendency of fluid
  to spread on or adhere to a solid
  surface in presence of other fluids.
  Interaction btw fluids and solid
  phases.

  • Wetting phase → delta<90

  • Non-wetting phase → delta>90

Capillary pressure

• Pressure difference between 2 fluids caused by curvature of the inside pore space

  • MICP Test → measures pore throat size