Capillarity in Rocks


Geoscientists, petrophysicists, reservoir engineers and research and development staff who want to gain fundamental insight into the capillary properties and hydrocarbon distribution in reservoir rocks.


This course provided a detailed knowledge of how capillarity affects hydrocarbon distribution in a reservoir rock, and how the magnitude of capillary forces can be used to deduce valuable information about sizes of pore throats and the geometry and volume of the pore network. The integration of the capillary pressure data with other geological, petrophysical and engineering data in modeling reservoir properties will be highlighted.


  • Surface phenomena, capillarity, and inter- phase tension
  • Wettability
  • Pressure difference across a surface film
  • Capillary forces in reservoir Rocks; their measurement
  • Mercury / Air capillary pressures
  • The competition between capillary and gravity forces
  • Relationships between initial and residual saturations
  • Seal capacity
  • Mercury / Air cap pressure versus bulk volume occupied by mercury
  • Calculation of saturation from cap curves
  • Integration of Capillary data in reservoir description and modeling