| The next slide illustrates why horizontal drilling/multilateral
fracking are essential in overcoming the trend towards reservoirs with
lower
permeabilities. |
One of the attributes that helps make shale gas plays economically
viable is that the amount of gas contained within shales for a given
area is frequently much higher than for other formation types. The
higher densities are due to a combination of more gas per unit of
reservoir volume and the greater thickness of the shales, which can be
considerably thicker than other formation types. Similar to coals, gas
in shales exists in both free form in pore spaces, and adsorbed on the
organic particles in the shale matrix. |
