Rock properties can be a little tricky to understand.
Especially new student that start to learn about porosity, believe that large porosity will result in a good rock to store things. This is called a reservoir rock. These things include oil and gas but are also very important for CO2 Sequestration. This is a process where CO2 will be pumped back into a reservoir and stored. However, porosity isn’t everything. Have a look at this wonderful video that will clear this up, with the use of chocolate!
I got this video over twitter from Chris Rowan
— Chris Rowan (@Allochthonous) September 18, 2013