3. Capillary Pressure
• Is the pressure between two immiscible fluids in a thin tube.
• Resulting from the interactions of forces between the fluids and solid
walls of the tube.
6. Capillary Pressure Measurement
Porous Plate Method:
It is the most accurate
measurement of capillary pressure
in homogeneous and heterogeneous
cores.
Several plugs can be measured at a
time.
The capillary discontinuity may
distort the results.
8. Porous Plate Method(Cont.)
Procedure:
• Put the saturated core onto the
porous plate in the cell.
• Adjust the pressure regulator
and give the cell the pressure
difference according to a
measuring plan.
9. Porous Plate Method(Cont.)
• After 3 days, stop the pressure
supply and take off the cores
from the cell.
• Weigh the core and calculate the
water saturation corresponding
to the capillary pressure