1. By
Mohd Abdul Hakeem
11H11A2726
Al Habeeb College Of Engineering and
Technology

2.  Porosity
 Permeabilty
 Core plugs
 Identification of porosity by helium Porosimeter
 Identification of permeability by gas Permeameter

3. To determine the porosity and permeability of
the core plugs

4.  It is defined as the ratio of pore volume to bulk volume of
a rock sample.
 Porosity is one of the most important rock properties in
describing porous media.
 The porosity is defined as the capability of a rock to hold
fluids in pores.

5.  0-5% Negligible
 5-10% Poor
 10-15% Fair
 15-20% Good
 20-25% Very Good

6.  Permeability of a rock is defined as the ease
with which the fluid can flow.
 Permeability with one fluid in pore is called
“Absolute permeability”
 With more then one fluid is called “Effective
permeability”
 “Relative permeability” is the ratio of
effective permeability and absolute
permeability.
 It is denoted by ‘K’
 Permeability can be calculated by milli Darcy

7.  Poor 1-10 mD
 Fair 10-100 mD
 Good 100-1000 mD
 Excellent >1000 mD

15.  By correlating Porosity and Permeability of
the core samples, we get to know the
lithology of the formation.

17. Thank you